0-9, A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z, [Contents]
0-9,
A,
B,
C,
D,
E,
F,
G,
H,
I,
J,
K,
L,
M,
N,
O,
P,
Q,
R,
S,
T,
U,
V,
W,
X, Y,
Z, [Contents]
damaged rail 
Scope note required.
Literary warrant required.
Plural form: damaged rails
CL Track and track components
BT <rails by condition>
NT buckled rail
NT corrugated rail
NT crippled rail
NT galled rail
NT wheel burned rail
damper
A pivoted flap fixed to the
ash pan of a steam locomotive to regulate the supply of air to the firebox.
Warrant: The Railway Dictionary, An A-Z of Railway Terminology, Alan A Jackson,
Alan Sutton Publishing, 1996
Plural form: dampers
CL Vehicles and vehicle components
BT firebox component
dandy car
A horse hauled passenger
carriage.
Literary warrant required.
Plural form: dandy cars
CL Vehicles and vehicle components
BT <passenger carriages by haulage>
RT horse hauled stock
dandy cart
A wagon in which a horse
travelled to descend an incline, behind a train going down under gravity, after
having hauled a train up.
Warrant: Dandy-Cart to Diesel, J Simmons, HMSO,
1981
Plural form: dandy carts
UF dandy truck
CL Vehicles and vehicle components
BT <other non-revenue operating stock>
dandy truck
A railway vehicle for
the conveyance of haulage horses on the downhill journey on a horse-worked
railway where gravity trains are run.
Literary warrant required.
Plural
form: dandy trucks
USE dandy cart
CL Vehicles and vehicle components
BT <other non-revenue operating stock>
dart (smokebox component)
Part of the central catch
mechanism on a locomotive smokebox door.
Warrant: The Locomotive of Today,
Locomotive Publishing Company, 1927
Plural form: darts (smokebox
components)
CL Vehicles and vehicle components
BT smokebox component
dart (tool)
A long handled tool for
cleaning the fire in a steam locomotive.
Warrant: Railway Technical Web
Pages, Piers Connor, 2000
Plural form: darts (tools)
CL Tools and equipment
BT firemans equipment
dead locomotive
Any unpowered
locomotive.
Warrant: Railway Technical Web Pages, Piers Connor, 2000
Plural form: dead locomotives
CL Vehicles and vehicle components
BT <locomotives by condition>
deadman
A safety device incorporated
in the master controller of a diesel or electric train which requires the driver
to exert continuous pressure to prevent automatic application of the brakes.
Warrant: Heritage Railways Association - Glossary,
http://ukhrail.ac.uk/glossary, 2000
Plural form: deadmen
USE drivers safety device
CL Vehicles and vehicle components
BT vigilance device
deadman valve isolating cock
Scope note required.
Literary warrant required.
Plural form: deadman valve isolating cocks
CL Vehicles and vehicle components
BT <brake pipes, reservoirs, etc.>
deadmans handle
A safety device incorporated
in the master controller of an electric train which requires the driver to
exercise a continuous pressure to prevent interruption of current supply and the
application of the brakes.
Warrant: The Harrow Railway Disaster 1952, L F E
Coombs, David & Charles, 1977
Plural form: deadmans handles
CL Vehicles and vehicle components
BT drivers safety device
deal wagon
A railway vehicle dedicated
to the carriage of timber deals.
Warrant: An Illustrated History of LMS
Wagons Vol 1, R J Essery, Oxford Publishing Company, 1981 p136
Plural form:
deal wagons
CL Vehicles and vehicle components
BT <timber/steel carrying vehicles>
decapod
A steam locomotive with ten
coupled driving wheels, designed by the Great Eastern Railway for rapid
acceleration to keep steam competitive with electric suburban development. Used
in the US specifically for a 2-10-0 locomotive.
Warrant: Locomotive
Cyclopedia of American Practice, 13th Edition, 1947
Plural form:
decapods
CL Vehicles and vehicle components
BT ten coupled locomotive
deck roof
A raised central section
of a coach roof fitted with ventilators and deck lights, intended to give extra
daylight and ventilation.
Warrant: Railway Carriages and Wagons: Their
design and construction (reprinted articles from The Railway Engineer 1892-7),
Sidney Stone, republished by Peter Kay, circa 1997 Figs 498-505.
Plural
form: deck roofs
USE clerestory
CL Vehicles and vehicle components
BT <vehicle body subassemblies>
deck roof arch rail
A curved horizontal rail
forming the top part of the framing of the end of a carriage deck roof.
Warrant: Railway Carriages and Wagons: Their design and construction (reprinted
articles from The Railway Engineer 1892-7), Sidney Stone, republished by Peter
Kay, circa 1997 Fig 503
Plural form: deck roof arch rails
CL Vehicles and vehicle components
BT arch rail
deck roof corner pillar
A vertical structural member
forming the corner of a vehicle deck roof.
Warrant: Railway Carriages and
Wagons: Their design and construction (reprinted articles from The Railway
Engineer 1892-7), Sidney Stone, republished by Peter Kay, circa 1997.
Plural
form: deck roof corner pillars
CL Vehicles and vehicle components
BT corner pillar
deck roof end pillar
An upright pillar forming
part of the framing of the deck roof end of a vehicle body.
Warrant: Railway
Carriages and Wagons: Their design and construction (reprinted articles from The
Railway Engineer 1892-7), Sidney Stone, republished by Peter Kay, circa 1997.
Fig 503.
Plural form: deck roof end pillars
CL Vehicles and vehicle components
BT end pillar
deck roof side pillar
A vertical structural member
forming part of the side framing of the deck roof of a vehicle body.
Warrant: Railway Carriages and Wagons: Their design and construction (reprinted
articles from The Railway Engineer 1892-7), Sidney Stone, republished by Peter
Kay, circa 1997. Fig 499.
Plural form: deck roof side pillars
CL Vehicles and vehicle components
BT side framing
<decorative furnishings>
Decorative furnishings used
to adorn railway premises. No further breakdown of this heading will be provided
unless some railway specific examples come to light. Use AAT or similar for
further breakdown.
Plural form: <decorative furnishings>
CL Built works and components
BT <built work furnishings, fixtures and fittings>
deduction mandate
An authority, signed by the
employee, for their employer to make certain deductions from their pay.
Literary warrant required.
Plural form: deduction mandates
UF paybill deductions form
CL Commercial records and equipment
BT <payroll documentation>
deep case wagon
A railway vehicle dedicated
to the carriage of very large packing cases that require greater headroom than
that afforded by a normal case wagon.
Literary warrant required.
Plural
form: deep case wagons
CL Vehicles and vehicle components
BT case wagon
demountable adhesive tank
A self-contained tank
dedicated to the conveyance of adhesive, designed to be easily transhipped from
rail to road, etc. Carried by rail on a flat wagon or specially constructed
demountable tank chassis
Warrant: John Robinson, The Transport Trust
Plural form: demountable adhesive tanks
CL Vehicles and vehicle components
BT demountable tank
demountable beer tank
A removable beer tank
designed for ease of transhipment between road and rail. Normally transported on
a special chassis during the railborne portion of the journey.
Literary
warrant required.
Plural form: demountable beer tanks
CL Vehicles and vehicle components
BT demountable tank
demountable container
A self-contained freight
container designed to be easily transhipped from rail to road, etc. Carried by
rail on a flat wagon or specially constructed container chassis.
Warrant:
John Robinson, The Transport Trust
Plural form: demountable containers
UF container (demountable)
CL Vehicles and vehicle components
BT <rolling stock by form>
demountable milk tanker
A road trailer tank
dedicated to the conveyance of milk, specifically designed for carriage by rail
on a flat wagon or specially constructed chassis.
Warrant: John Robinson, The
Transport Trust
Plural form: demountable milk tankers
CL Vehicles and vehicle components
BT demountable tank
demountable tank
A self-contained tank
designed to be easily transhipped from rail to road, etc. Carried by rail on a
flat wagon or specially constructed demountable tank chassis. The term is also
applied to road trailer tanks specifically designed for carriage by rail but in
this thesaurus these are differentiated by the designation 'demountable
tanker'.
Warrant: John Robinson, The Transport Trust
Plural form:
demountable tanks
CL Vehicles and vehicle components
BT freight container
NT demountable adhesive tank
NT demountable beer tank
NT demountable milk tanker
RT demountable tanker
DEMU
A diesel electric multiple
unit.
Warrant: Railtrack Jargon Buster, 1999
Plural form: DEMUs
USE diesel electric multiple unit
CL Vehicles and vehicle components
BT diesel multiple unit
departmental brake van
A brake van dedicated to use
on departmental service work trains.
Warrant: John Robinson, The Transport
Trust
Plural form: departmental brake vans
CL Vehicles and vehicle components
BT brake van
NT ballast brake van
NT Power Supply Section brake van
NT S&T brake coach
NT yard stock movement brake coach
departmental train
A non-revenue
earning train operated by or on behalf of one of the railway departments.
Typically engaged on railway construction, testing, maintenance or staff
training work or conveying materials for such work.
Literary warrant
required.
Plural form: departmental trains
USE service train
CL Vehicles and vehicle components
BT non-passenger train
departure board
A notice at a railway
station showing the destination and departure times of trains.
Warrant:
Railway Terminology Working Group
Plural form: departure boards
CL Built works and components
BT <station signage>
departure clock
A clock attached to a
departure indicator at a railway station showing the time of the next
trains.
Warrant: Railway Terminology Working Group
Plural form:
departure clocks
CL Built works and components
BT <station signage>
departure indicator
A notice at a railway
station showing the destination and departure times of trains.
Warrant:
Railway Terminology Working Group
Plural form: departure indicators
CL Built works and components
BT <station signage>
NT finger board
NT platform information board
depot
A complex of sidings, buildings,
platforms, etc. where transhipment, stabling, servicing, repairs and other such
activities are undertaken.
Warrant: The Railway Dictionary, An A-Z of Railway
Terminology, Alan A Jackson, Alan Sutton Publishing, 1996
Plural form:
depots
USE railway depot
CL Built works and components
BT <complexes by form>
depression bar
A bar fixed on the track
near buffer stops in terminal stations in place of the track circuit where the
rails are likely to remain rusty or contaminated through lack of use.
Warrant: The Railway Dictionary, An A-Z of Railway Terminology, Alan A Jackson,
Alan Sutton Publishing, 1996
Plural form: depression bars
CL Control and communications
BT <mechanical train detection, etc.>
derailer
A device which can be moved
into position on top of a running rail to derail a vehicle if the movement is
likely to cause danger.
Warrant: The Railway Dictionary, An A-Z of Railway
Terminology, Alan A Jackson, Alan Sutton Publishing, 1996
Plural form:
derailers
CL Track and track components
BT <vehicle stopping sub-assemblies>
design model (design office tool)
Scope note required.
Warrant: Great Western Railway Drawing Registers
Plural form: design models
(design office tool)
CL Tools and equipment
BT drawing office equipment
destination blind
A roller blind displaying
train destinations and calling points on the front of a locomotive or multiple
unit or on the side of a passenger vehicle.
Warrant: LNER Carriages, M
Harris, David St John Thomas, 1994
Plural form: destination blinds
CL Vehicles and vehicle components
BT <destination, etc. indicating equipment>
destination blind roller
Scope note required.
Literary warrant required.
Plural form: destination blind rollers
UF blind roller
CL Vehicles and vehicle components
BT <destination, etc. indicating equipment>
destination board
A sign attached to a train
indicating its destination and route.
Warrant: Lexique General de Termes
Ferroviares, Union Internationale des Chemins de Fer, 1975
Plural form:
destination boards
CL Vehicles and vehicle components
BT <destination, etc. indicating equipment>
destination indicator
Scope note required.
Warrant: LNER Carriages, M Harris, David St John Thomas, 1994
Plural form:
destination indicators
CL Vehicles and vehicle components
BT <destination, etc. indicating equipment>
destination indicator board
Scope note required.
Literary warrant required.
Plural form: destination indicator boards
CL Vehicles and vehicle components
BT <destination, etc. indicating equipment>
destination light
Scope note required.
Literary warrant required.
Plural form: destination lights
CL Vehicles and vehicle components
BT <destination, etc. indicating equipment>
destination number rack
Scope note required.
Literary warrant required.
Plural form: destination number racks
CL Unidentified
BT <unidentified terms>
destination plate
Scope note required.
Literary warrant required.
Plural form: destination plates
CL Unidentified
BT <unidentified terms>
destination rack
Scope note required.
Literary warrant required.
Plural form: destination racks
CL Unidentified
BT <unidentified terms>
<destination, etc. indicating equipment>
Destination boards, blinds
and associated equipment, named express train headboards, coach roofboards, etc.
Plural form: <destination, etc. indicating equipment>
CL Vehicles and vehicle components
BT bodywork component
NT carriage destination board
NT carriage window label
NT destination blind
NT destination blind roller
NT destination board
NT destination indicator
NT destination indicator board
NT destination light
NT headboard
NT tailboard
<destination, etc. indicating labels>
Scope note required.
Plural form: <destination, etc. indicating labels>
CL Commercial records and equipment
BT <advertising and publicity>
NT carriage destination label
NT carriage label
detonator
A small disc-shaped warning
device, designed to be placed on the railhead for protection and emergency
purposes. It explodes when a train passes over alerting the driver.
Warrant:
Railtrack Jargon Buster, 1999
Plural form: detonators
UF banger
UF cracker
CL Control and communications
BT <audible signals>
NT duplex detonator
NT open section detonator
NT tube detonator
detonator box
A case or box filled with
six or more detonators carried on a locomotive or multiple unit for train
protection in the case of emergency.
Literary warrant required.
Plural
form: detonator boxes
CL Control and communications
BT detonator container
detonator case
A cylindrical container for
the storage of detonators.
Warrant: Ray Towell, Curator of Operations,
National Railway Museum
Plural form: detonator cases
CL Control and communications
BT detonator container
detonator container
A container for holding
detonators.
Literary warrant required.
Plural form: detonator
containers
CL Control and communications
BT <audible signals>
NT detonator box
NT detonator case
NT detonator holder
NT detonator tin
detonator holder
A cylindrical container for
the storage of detonators.
Warrant: Ray Towell, Curator of Operations,
National Railway Museum
Plural form: detonator holders
CL Control and communications
BT detonator container
detonator placer
An appliance for placing one
or more detonators on the running line, operated by a lever in an adjacent
signal box or at the lineside.
Warrant: Lexique General de Termes
Ferroviares, Union Internationale des Chemins de Fer, 1975
Plural form:
detonator placers
CL Control and communications
BT <audible signals>
detonator tin
A metal cylindrical
container for the storage of detonators.
Warrant: Ray Towell, Curator of
Operations, National Railway Museum
Plural form: detonator tins
CL Control and communications
BT detonator container
Detroit sight feed lubricator
A hydrostatic cylinder
lubricator manufactured by the Detroit Company.
Warrant: Steam Locomotive
Lubrication, P W Skellon, MIC Publications, 1997
Plural form: Detroit sight
feed lubricators
CL Vehicles and vehicle components
BT lubricator
Dewel ventilator
A ventilator, generally
situated over main windows in the eaves panel, and comprising five swivelling
glass vanes that could be adjusted by the passenger to face or trail the
airstream past the carriage.
Warrant: The Illustrated history of LMS
standard coaching stock Vol 3: Non-corridor, special purpose and self-propelled
vehicles, David Jenkinson & Bob Essery, Oxford Publishing Company, 2000 p8
Plural form: Dewel ventilators
CL Vehicles and vehicle components
BT ventilator
de-icing car
A London Underground car
specially equipped to spread de-icing fluid on conductor rails.
Warrant: LUL
Jargon Buster
Plural form: de-icing cars
CL Vehicles and vehicle components
BT <track maintenance vehicles>
de-icing control
Scope note required.
Literary warrant required.
Plural form: de-icing controls
CL Vehicles and vehicle components
BT <ancillary controls>
de-icing ON indicator
Scope note required.
Literary warrant required.
Plural form: de-icing ON indicators
CL Vehicles and vehicle components
BT <ancillary gauges and instrumentation>
de-icing train
A special train fitted with
equipment for clearing snow or ice from conductor rails.
Warrant: LUL Jargon
Buster
Plural form: de-icing trains
CL Vehicles and vehicle components
BT service train
de-sander
A steam pipe used to remove
sand which has been applied to the railhead.
Warrant: Railway Technical Web
Pages, Piers Connor, 2000
Plural form: de-sanders
CL Vehicles and vehicle components
BT sanding gear
de-wheeled carriage shelter
A grounded coach body (i.e.
a carriage without wheels) used as a platform or similar shelter.
Warrant:
John Robinson, The Transport Trust
Plural form: de-wheeled carriage
shelters
CL Built works and components
BT <secondary use structures>
diagonal frame member
A carriage or wagon
underframe member occupying an oblique position between the headstock and the
first bearer.
Warrant: Railway Mechanical Engineering, A R Bell et al.,
Gresham Publishing Company Ltd, 1923 p99
Plural form: diagonal frame
members
CL Vehicles and vehicle components
BT underframe component
diamond crossing
Trackwork in the shape of a
diamond where two lines intersect but do not join.
Warrant: Railtrack Jargon
Buster, 1999
Plural form: diamond crossings
CL Track and track components
BT trackwork
NT skew crossing
NT slip
NT switch diamond
diesel electric locomotive
A locomotive powered by
electric traction motors which carries its own generating plant fuelled by
diesel.
Warrant: Lexique General de Termes Ferroviares, Union Internationale
des Chemins de Fer, 1975
Plural form: diesel electric locomotives
CL Vehicles and vehicle components
BT diesel locomotive
diesel electric multiple unit
A diesel multiple unit with
electric drive.
Warrant: Railtrack Jargon Buster, 1999
Plural form:
diesel electric multiple units
UF DEMU
CL Vehicles and vehicle components
BT diesel multiple unit
diesel electric rail crane
Scope
note required.
Literary warrant required.
Plural form: diesel electric
rail cranes
USE travelling diesel electric crane
CL Vehicles and vehicle components
BT <travelling cranes by power source>
diesel engine
Scope note required.
Warrant: Inside a Diesel Locomotive, B K Cooper, Ian Allan Ltd, 1964
Plural
form: diesel engines
CL Vehicles and vehicle components
BT engine
diesel hydraulic locomotive
A locomotive where the
coupling between the internal combustion engine and the wheels is achieved by
pumping high pressure oil to drive motors on the wheels.
Warrant: Inside a
Diesel Locomotive, B K Cooper, Ian Allan Ltd, 1964
Plural form:
diesel-hydraulic locomotives
CL Vehicles and vehicle components
BT diesel locomotive
diesel locomotive
A locomotive whose principal
power source is a diesel engine.
Warrant: Railway Technical Web Pages, Piers
Connor, 2000
Plural form: diesel locomotives
CL Vehicles and vehicle components
BT <compression ignition engined locomotives>
NT diesel electric locomotive
NT diesel hydraulic locomotive
NT diesel mechanical locomotive
diesel mechanical locomotive
A locomotive powered by
diesel with mechanical transmission system.
Warrant: Lexique General de
Termes Ferroviares, Union Internationale des Chemins de Fer, 1975
Plural
form: diesel mechanical locomotives
CL Vehicles and vehicle components
BT diesel locomotive
diesel mechanical multiple unit
A diesel multiple unit with
mechanical drive.
Warrant: Railtrack Jargon Buster, 1999
Plural form:
diesel mechanical multiple units
UF DMMU
CL Vehicles and vehicle components
BT diesel multiple unit
diesel multiple unit
A diesel powered set of
passenger (or parcels) vehicles formed as a train unit.
Warrant: The Heyday
of the DMU, A C Butcher, Ian Allan Publishing, 1994
Plural form: diesel
multiple units
UF DMU
CL Vehicles and vehicle components
BT multiple unit
NT diesel electric multiple unit
NT diesel mechanical multiple unit
diesel power car
A diesel powered passenger
(or parcels) vehicle in a diesel multiple unit.
Warrant: HSTs At Work, R Ford
& B Perren, Ian Allan Ltd, 1988
Plural form: diesel power cars
CL Vehicles and vehicle components
BT power car
diesel railcar
A diesel powered passenger
carrying vehicle.
Warrant: Lexique General de Termes Ferroviares, Union
Internationale des Chemins de Fer, 1975
Plural form: diesel railcars
CL Vehicles and vehicle components
BT railcar
diesel-electric power unit
Scope note required.
Warrant: Inside a Diesel Locomotive, B K Cooper, Ian Allan Ltd, 1964
Plural
form: diesel-electric power units
CL Vehicles and vehicle components
BT engine
dillyway
An archaic term used in
the early nineteenth century in the North East of England to describe a tramway.
The term was derived from the name of an early tramway locomotive, the Wylam
Dilly.
Warrant: Jim Rees, Beamish North of England Open Air Museum
Plural form: dillyways
USE tramway
CL Railway types
BT <railways by form>
dimensions plate
A plate, usually of cast
metal, typically giving length, width and tare weight, found for example affixed
to the ends of carriages.
Warrant: Parkin, Keith British Railways Mark 1
Coaches, Pendragon, 1991 p64
Plural form: dimensions plates
CL Vehicles and vehicle components
BT <vehicle identity and instruction plates>
dining car
A railway carriage equipped
for dining.
Warrant: Lexique General de Termes Ferroviares, Union
Internationale des Chemins de Fer, 1975
Plural form: dining cars
UF dining saloon (vehicle)
CL Vehicles and vehicle components
BT <passenger carriages by function>
dining saloon (vehicle)
A railway
carriage equipped for dining.
Warrant: The Restaurant Car, G Kichenside,
David & Charles, 1979
Plural form: dining saloons (vehicles)
USE dining car
CL Vehicles and vehicle components
BT <passenger carriages by function>
direct lever locking lever frame
A mechanically locked lever
frame where the direct action of the movement of the lever imparts motion to
effect the locking.
Literary warrant required.
Plural form: direct lever
locking lever frames
CL Control and communications
BT interlocking frame
direct load safety valve
Scope note required.
Warrant: Great Western Railway Drawing Registers
Plural form: direct load
safety valves
CL Vehicles and vehicle components
BT safety valve
direct printed ticket
Scope note required.
Literary warrant required.
Plural form: direct printed tickets
CL Commercial records and equipment
BT <tickets by print features>
directing signal
Any signal that has more
than one running route and is capable of displaying an indication of route.
Warrant: Ray Towell, Curator of Operations, National Railway Museum
Plural
form: directing signals
CL Control and communications
BT running signal
NT junction signal
NT route indicating signal
RT splitting distant signal
RT route indicator
directors pass
A permit to travel provided
to directors of the railway company ex officio. Often in the form of a small
token, sometimes made from precious metal or ivory.
Warrant: Railway Relics
and Regalia, Ed P Whitehouse, Country Life, 1975
Plural form: directors
passes
CL Commercial records and equipment
BT pass
directors saloon
A vehicle specially
appointed internally for the conveyance of railway directors on inspection
trips.
Warrant: The North London Railway - A Pictorial Record, C P Atkins
& T J Edgington, HMSO, 1979
Plural form: directors saloons
CL Vehicles and vehicle components
BT <personnel transport and accommodation>
disc and crossbar signal
A type of signal developed
in the early days of railways that gave an indication by means of boards at
right angles to one another rotating about a vertical axis. A crossbar was
visible to the driver when the signal was at danger and a disc when the
indication was caution or clear (caution being distinguished by a subsidiary
fantail board where this indication was provided).
Literary warrant required.
Plural form: disc and crossbar signals
CL Control and communications
BT <primitive disc and bar signals>
RT disc signal
disc brake
A braking mechanism using
friction pads applied by calliper action to a disc secured to vehicle axle or
wheel centre.
Warrant: Encyclopedia of Railways, O S Nock, 1977
Plural
form: disc brakes
CL Vehicles and vehicle components
BT brake
disc signal
A signal that gives an
indication by the rotation of a disc on an axis perpendicular to its face. For
disc signals where the rotation is on an axis in the same plane as the face
(e.g. disc and crossbar signals) see <early disc and bar signals>.
Literary warrant required.
Plural form: disc signals
UF disc (signal)
CL Control and communications
BT <signals by form>
NT ground disc
RT disc and crossbar signal
RT Martin disc signal
RT ground signal
disc wheel
Scope note required.
Literary warrant required.
Plural form: disc wheels
CL Vehicles and vehicle components
BT <wheels by form>
NT Kitson wheel
NT Mansell wheel
NT monobloc wheel
NT Schoen wheel
NT three hole disc wheel
disc (signal component)
A circular board or plate
that rotates to give the indication of a signal (latterly usually a ground
signal).
Literary warrant required.
Plural form: discs (signal
components)
CL Control and communications
BT signal component
RT disc signal
disc (signal)
A ground signal.
Warrant: The Railway Dictionary, An A-Z of Railway Terminology, Alan A Jackson,
Alan Sutton Publishing, 1996
Plural form: discs (signals)
USE disc signal
CL Control and communications
BT <signals by form>
dish
A depression of the track,
at the bank head or bank foot used to slacken the tension on a rope to permit
its removal from a set, always of empties.
Literary warrant required.
Plural form: dishes
CL Track and track components
BT <track areas by function>
displacement lubricator
A cylinder lubricator which
works by the displacement of oil by water.
Warrant: Steam Locomotive
Lubrication, P W Skellon, MIC Publications, 1997 Warrant: Locomotive Management,
10th edition, J T Hodgson & C S Lake, revised by W B Oaten, Tothill Press,
1954
Plural form: displacement lubricators
CL Vehicles and vehicle components
BT lubricator
distant arm
A signal arm acting as a
warning of the position of the next stop signal.
Warrant: Two Centuries of
Railway Signalling, G Kichenside & A Williams, Oxford Publishing Company,
1998
Plural form: distant arms
CL Control and communications
BT signal arm
distant signal
A cautionary signal at which
a train does not have to stop. It is provided at the appropriate braking
distance away from one or more stop signals to warn drivers of the position of
those signals in time to bring the train to a stand if required.
Warrant:
Railtrack Jargon Buster, 1999
Plural form: distant signals
CL Control and communications
BT running signal
NT fishtail
NT fixed distant signal
NT splitting distant signal
distant warning board
A board exhibiting stripe or
bar markings to warn drivers they are approaching a distant signal.
Literary
warrant required.
Plural form: distant warning boards
UF warning board
CL Control and communications
BT <fixed signal boards>
RT distant signal
distributor
Air brake control valve
mounted on each vehicle which controls the passage of air between the reservoir
and the brake cylinder and between the brake cylinder and atmosphere.
Warrant: Lexique General de Termes Ferroviares, Union Internationale des Chemins
de Fer, 1975
Plural form: distributors
CL Vehicles and vehicle components
BT <brake pipes, reservoirs, etc.>
DMMU
Abbreviation for 'diesel
mechanical multiple unit'.
Warrant: Railtrack Jargon Buster, 1999
Plural
form: DMMUs
USE diesel mechanical multiple unit
CL Vehicles and vehicle components
BT diesel multiple unit
DMU
Abbreviation for 'diesel multiple
unit'.
Warrant: Railtrack Jargon Buster, 1999
Plural form: DMUs
USE diesel multiple unit
CL Vehicles and vehicle components
BT <complete units>
dock railway
A private railway system
operating in dockland areas.
Warrant: 150 Years of Southampton Docks, B
Moody, Kingfisher Railway Publications, 1988
Plural form: dock railways
CL Railway types
BT <railways supporting other transport systems>
<documents by form>
Scope note required.
Plural form: <documents by form>
CL Commercial records and equipment
NT punched card
NT register
dod
Slang for a ground signal. Warrant:
Railtrack Jargon Buster, 1999
Plural form: dods
USE ground signal
CL Control and communications
BT shunting signal
dog box (vehicle)
A coaching stock
vehicle dedicated to the conveyance of hounds. Warrant: John Robinson, The
Transport Trust
Plural form: dog boxes (vehicles)
USE hound van
CL Vehicles and vehicle components
BT <livestock carrying vehicles>
dog spike
A rail spike with dog-like
head.
Warrant: The Railway Dictionary, An A-Z of Railway Terminology, Alan A
Jackson, Alan Sutton Publishing, 1996
Plural form: dog spikes
CL Track and track components
BT spike (rail fastening)
doll (signal)
A signal post with one or
more semaphore arms.
Warrant: The Railway Dictionary, An A-Z of Railway
Terminology, Alan A Jackson, Alan Sutton Publishing, 1996
Plural form: dolls
(signal)
CL Control and communications
BT signal post
dolly
Slang for a ground signal.
Warrant: Railtrack Jargon Buster, 1999
Plural form: dollies
USE ground signal
CL Control and communications
BT shunting signal
dome
A dome mounted on the top of
the boiler to collect steam for supply to the regulator valve.
Warrant:
Great Western Railway Drawing Registers
Plural form: domes
CL Vehicles and vehicle components
BT boiler assembly
NT dome cover
dome cover
A decorative cover
protecting the steam dome.
Warrant: Great Western Railway Drawing Registers
Plural form: dome covers
CL Vehicles and vehicle components
BT dome
donkey compressor (signalling)
Scope note required.
Literary warrant required.
Plural form: donkey compressors (signalling)
CL Control and communications
BT <pneumatic transmission>
donkey compressor (Westinghouse brake)
A Westinghouse pump.
Warrant: The Railway Dictionary, An A-Z of Railway Terminology, Alan A Jackson,
Alan Sutton Publishing, 1996
Plural form: donkey compressors (Westinghouse
brake)
CL Vehicles and vehicle components
BT <brake pumps, etc.>
door component (vehicle)
Scope note
required.
Literary warrant required.
Plural form: door components
USE vehicle door component
CL Vehicles and vehicle components
BT access component
<door controls>
Scope note required.
Plural form: <door controls>
CL Vehicles and vehicle components
BT <driving and control components>
NT drivers side cab door closed control
NT drivers side cab door open control
NT electronic door control module
NT offside cab door close control
NT passenger close
NT passenger open
NT platform close switch
NT platform door interlock cut-out
NT platform doors closed indicator
NT pneumatic door operator
NT position switch
NT saloon door selective re-open control
NT train door interlock cut-out switch
door light rail
A horizontal structural
member forming the top of a vehicle door window opening.
Warrant: Railway
Carriages and Wagons: Their design and construction (reprinted articles from The
Railway Engineer 1892-7), Sidney Stone, republished by Peter Kay, circa 1997 Fig
468.
Plural form: door light rails
CL Vehicles and vehicle components
BT vehicle door framing
RT top light rail
door panel batten
A vertical intermediate
vehicle door frame member that provides additional support for the panelling in
the lower part of the door.
Warrant: Railway Carriages and Wagons: Their
design and construction (reprinted articles from The Railway Engineer 1892-7),
Sidney Stone, republished by Peter Kay, circa 1997 Fig 468.
Plural form:
door panel battens
CL Vehicles and vehicle components
BT vehicle door framing
door pillar
A vertical structural member
forming the edge of a vehicle door.
Warrant: Railway Carriages and Wagons:
Their design and construction (reprinted articles from The Railway Engineer
1892-7), Sidney Stone, republished by Peter Kay, circa 1997 Fig 468.
Plural
form: door pillars
CL Vehicles and vehicle components
BT vehicle door framing
NT lock pillar
door ventilator
A ventilator situated on an
external door above the droplight.
Warrant: The Illustrated history of LMS
standard coaching stock Vol 3: Non-corridor, special purpose and self-propelled
vehicles, David Jenkinson & Bob Essery, Oxford Publishing Company, 2000 p8
Plural form: door ventilators
CL Vehicles and vehicle components
BT ventilator
door waist rail
A horizontal structural
member at the waist of a vehicle door frame (in line with the body waist
rail).
Warrant: Railway Carriages and Wagons: Their design and construction
(reprinted articles from The Railway Engineer 1892-7), Sidney Stone, republished
by Peter Kay, circa 1997 Fig 468.
Plural form: door waist rails
CL Vehicles and vehicle components
BT vehicle door framing
RT top light rail
dormitory coach
A coach used for railway
staff to sleep in when working away from home.
Warrant: Departmental Coaching
Stock, Roger Butcher & Peter Fox, Platform 5 Publishing Ltd, 3rd edition,
1987
Plural form: dormitory coaches
CL Vehicles and vehicle components
BT <personnel accommodation>
double coupon ticket
Scope note required.
Literary warrant required.
Plural form: double coupon tickets
CL Commercial records and equipment
BT <tickets by print features>
double deck carriage
A passenger carriage with
seating on two levels.
Warrant: John Robinson, The Transport Trust
Plural form: double deck carriages
CL Vehicles and vehicle components
BT <passenger carriages by internal layout/facilities>
double end electrical section
A section of conductor rail
fed from two points.
Warrant: Railtrack London & North Eastern, A
Glossary of Railway Terms, October 1998
Plural form: double end electrical
sections
CL Track and track components
BT conductor rail
<double line block instruments>
Block instruments associated
with the signalling of trains on a double line or pair of lines.
Plural
form: <double line block instruments>
CL Control and communications
BT block instrument
NT single wire double line absolute block instrument
double sight-feed lubricator
Scope note required.
Literary warrant required.
Plural form: double sight-feed lubricators
CL Vehicles and vehicle components
BT lubricator
double slip
A diamond crossing with
connections between both tracks in both directions.
Warrant: The Railway
Dictionary, An A-Z of Railway Terminology, Alan A Jackson, Alan Sutton
Publishing, 1996
Plural form: double slips
CL Track and track components
BT slip
double trap points
Trap points formed from a
pair of switches. It is usual to make the switch rail nearer to the main line
longer than the other.
Warrant: British Railway Track: Design, Construction
and Maintenance, C.L. Heeler (Ed, The Permanent Way Institution, 5th Edition,
1979 p133.
Plural form: double trap points
CL Track and track components
BT trap points
double turnout
An arrangement of two
turnouts in which the switches of the first turnout are followed by those of the
second turnout before a crossing occurs.
Warrant: Railway Permanent Way:
Dimensional theory and practice, W Hepworth & J T Lee, Chas Sever, 1922 p222
Plural form: double turnouts
CL Track and track components
BT <turnouts by layout>
doubleway rail
Rail where the profile is
the same at the top and the bottom which was designed to be turned over and
re-used when worn.
Warrant: Jim Rees, Beamish North of England Open Air
Museum
Plural form: doubleway rails
CL Track and track components
BT <rails by form>
double-ended unit
Scope note required.
Literary warrant required.
Plural form: double-ended units
CL Vehicles and vehicle components
BT driving car
down line
The track with a normal
direction of running generally away from London and other locations as laid down
in Working Timetables and Appendices.
Literary warrant required.
Plural
form: down lines
CL Track and track components
BT <running lines by direction of working>
down main
A rail line taking trains
away from London and other locations as laid down in Working Timetables and
Appendices.
Warrant: Railtrack Jargon Buster, 1999
Plural form: down
main lines
CL Track and track components
BT <running lines by direction of working>
down rod
The actuating rod on a
lower quadrant semaphore signal that connects the spectacle with the balance
weight.
Literary warrant required.
Plural form: down rods
USE signal rod
CL Control and communications
BT signal operating component
Dowty retarder
A mechanical device used to
control the speed of loose shunted vehicles in shunting yards, made by
Dowty.
Warrant: Gordon Reed, Permanent Way Institution
Plural form:
dowty retarders
CL Track and track components
BT retarder
drag box
The large casting or
fabrication fitted to the travelling end of tender locomotive frames for the
attachment of the tender.
Warrant: Great Western Railway Drawing Registers
Plural form: drag boxes
CL Vehicles and vehicle components
BT tender drawgear
dragbox buffer
The buffer inserted between
the dragbox and the tender to prevent buffeting between the two.
Warrant:
Great Western Railway Drawing Registers
Plural form: dragbox buffers
CL Vehicles and vehicle components
BT tender drawgear
dragbox coupling
The coupling used to attach
a steam locomotive to its tender.
Warrant: Great Western Railway Drawing
Registers
Plural form: dragbox couplings
CL Vehicles and vehicle components
BT tender drawgear
dragging detector
A device which alerts a
railway control centre that a train has become derailed or part of a train is
dragging on the right of way.
Warrant: Railway Technical Web Pages, Piers
Connor, 2000
Plural form: dragging detectors
CL Control and communications
BT <emergency detection equipment>
drain cock
A small exhaust port
through which condensed water can be expelled under steam pressure from the
cylinders.
Warrant: Great Western Railway Drawing Registers
Plural form:
drain cocks
USE cylinder drain cock
CL Vehicles and vehicle components
BT boiler assembly
drainage
A means of draining storm
water from the permanent way, usually adjacent to the cess.
Warrant: British
Railway Track: Design, Construction and Maintenance, D H Coombs (Ed), The
Permanent Way Institution, 4th Edition, 1971
Plural form: drainage
CL Track and track components
BT <track areas by function>
NT cess
<drainage structures>
Buildings and other
structures (except bridges and culverts) associated with the drainage of the
railway.
Plural form: <drainage structures>
CL Built works and components
BT <route structures>
NT pumphouse
NT pumping engine house
RT cess
RT culvert
RT bridge
dramroad
An eighteenth century term
for tramroad.
Warrant: The Railway Dictionary, An A-Z of Railway
Terminology, Alan A Jackson, Alan Sutton Publishing, 1996
Plural form:
dramroads
CL Railway types
BT plateway
draught animal
Any animal used to move a
railway vehicle.
Literary warrant required.
Plural form: draught
animals
CL Vehicles and vehicle components
BT <animal motive power>
NT shunting horse
<draught animal equipment>
Any harness or related
equipment designed to aid an animal (including humans) move a vehicle.
Plural form: <draught animal equipment>
CL Tools and equipment
BT <railway operating tools and equipment>
NT harness
drawbar
A device for connecting
locomotive to tender or train.
Warrant: Lexique General de Termes
Ferroviares, Union Internationale des Chemins de Fer, 1975
Plural form:
drawbars
UF draw-bar
CL Vehicles and vehicle components
BT drawgear
drawbar hook
The hook passing through the
buffer beam to facilitate coupling to the next vehicle.
Warrant: The
Locomotive of Today, Locomotive Publishing Company, 1927
Plural form:
drawbar hooks
CL Vehicles and vehicle components
BT <buffing and drawgear>
NT quick-release hook
NT release hook
drawbar housing
Scope note required.
Literary warrant required.
Plural form: drawbar housings
CL Vehicles and vehicle components
BT drawgear
drawgear
The collective term for
drawbar, drawbar hook and coupling.
Warrant: Great Western Railway Drawing
Registers
Plural form: drawgear
CL Vehicles and vehicle components
BT <buffing and drawgear>
NT coupling
NT coupling component
NT coupling hook and bar
NT drawbar
NT drawbar housing
drawing instrument
A tool or instrument used
for creating technical drawings.
Literary warrant required.
Plural form:
drawing instruments
CL Tools and equipment
BT drawing office equipment
NT rail scale
NT railway curve
NT straight edge
drawing office equipment
All tools and equipment used
in the creation of technical drawings.
Literary warrant required.
Plural
form: drawing office equipment
CL Tools and equipment
BT <railway manufacturing and maintenance equipment>
NT design model (design office tool)
NT drawing instrument
draw-bar
A hooked bar fixed to the
centre of the end frame of a vehicle for coupling purposes.
Warrant: The
Railway Dictionary, An A-Z of Railway Terminology, Alan A Jackson, Alan Sutton
Publishing, 1996
Plural form: draw-bars
USE drawbar
CL Vehicles and vehicle components
BT drawgear
drive gear wheel
Scope note required.
Warrant: Electric Locomotives and Railways, H Greenly, no date p239
Plural
form: drive gear wheels
CL Vehicles and vehicle components
BT <power transmission components>
drive shaft
Scope note required.
Warrant: Electric Locomotives and Railways, H Greenly, no date p239
Plural
form: drive shafts
CL Vehicles and vehicle components
BT <power transmission components>
driver
A transmission device.
Warrant: Lexique General de Termes Ferroviares, Union Internationale des Chemins
de Fer, 1975
Plural form: drivers
CL Vehicles and vehicle components
BT <unattributed vehicle components>
<driver warning systems>
Systems that warn the driver
of an approaching train of the aspect of signals ahead or of a permanent or
temporary speed restriction and automatically apply the brake if the driver
fails to react appropriately.
Plural form: <driver warning
systems>
CL Control and communications
BT <automatic train protection equipment>
<driver/guard communication systems>
Inbuilt equipment for
transmitting messages between train operating staff, either verbally or by bell
codes, etc. For flags, handlamps, whistles, etc. used for communication between
guard and driver, see 'guards equipment' in the 'Tools and equipments' Class.
Plural form: <driver/guard communication systems>
CL Vehicles and vehicle components
BT <on-train communications equipment>
NT cab communicating unit
NT cab to cab control
NT cab to cab indicator
NT cab to cab telephone
RT guards equipment
driverless train
A train which operates
automatically without the presence of a driver.
Literary warrant required.
Plural form: driverless trains
CL Vehicles and vehicle components
BT <trains by operation>
drivers bag
A bag supplied by the
railway company to locomotive drivers to carry the tools and equipment required
for him to carry our his duties.
Literary warrant required.
Plural form:
drivers bags
CL Tools and equipment
BT drivers equipment
<drivers brake controls>
Levers, valves, guages, etc.
used by drivers to operate the brakes on a locomotive or train. Shunters,
guards, etc. brake controls are included under <brake controls> in the
'braking system component' heading. Brake pressure gauges and other indicators
provided inside the driver's cab are included here, those elsewhere on the train
are included under <brake controls>. This heading is initially provided
just as a cross-reference to <brake controls> until such time as this
thesaurus becomes fully polyhierarchical and this heading can be fully
populated in its own right. It will then become a Narrower Term of <brake
controls> in addition to its existing relationship of Narrower Term of
<driving and control components>.
Plural form: <drivers brake
controls>
CL Vehicles and vehicle components
BT <driving and control components>
RT <brake controls>
drivers brake valve
A device by which a driver
controls the braking of a train.
Warrant: Locomotives, their construction,
maintenance and operation, A Morton Bell, Virtue & Co Ltd, 1946
Plural
form: drivers brake valves
CL Vehicles and vehicle components
BT <brake controls>
drivers brake valve isolating cock
Scope note required.
Literary warrant required.
Plural form: drivers brake valve isolating
cocks
CL Vehicles and vehicle components
BT <brake pipes, reservoirs, etc.>
drivers control
Scope note required.
Literary warrant required.
Plural form: drivers controls
CL Vehicles and vehicle components
BT <master controls>
drivers equipment
The tools and equipment used
by the locomotive driver to enable him to carry out his duties.
Literary
warrant required.
Plural form: drivers equipment
CL Tools and equipment
BT <on-train tools and equipment>
NT drivers bag
NT drivers lamp
NT drivers lunch box
NT drivers tea can
NT drivers tool bag
NT drivers torch lamp
drivers key
The ignition key for diesel
locomotives or diesel multiple units.
Warrant: John Robinson, The Transport
Trust
Plural form: drivers keys
CL Vehicles and vehicle components
BT <master controls>
drivers lamp
A handlamp carried by the
locomotive driver to enable him to inspect the locomotive in the dark and to
give hand signals if necessary.
Literary warrant required.
Plural form:
drivers lamps
CL Tools and equipment
BT drivers equipment
drivers level crossing indicator
An indicator provided at
certain types of level crossing to indicate to the driver the state of the
crossing equipment.
Warrant: The History & Development of Railway
Signalling in the British Isles, Friends of the National Railway Museum
Plural form: drivers level crossing indicators
CL Control and communications
BT <signals by function>
drivers lunch box
A container, often made of
metal and specially designed to withstand the heat and dirt found on the
locomotive footplate, in which the driver keeps his packed lunch.
Literary
warrant required.
Plural form: drivers lunch boxes
CL Tools and equipment
BT drivers equipment
drivers safety device
A safety device incorporated
in the master controller of a diesel or electric train which requires the driver
to exert continuous pressure to prevent automatic application of the brakes.
Warrant: Railway Technical Web Pages, Piers Connor, 2000
Plural form:
drivers safety devices
UF deadman
CL Vehicles and vehicle components
BT vigilance device
NT deadmans handle
drivers side cab door closed control
A switch on the outside of
the driver's cab on a multiple unit train to close the cab doors independently
from the through door control of the passenger doors.
Warrant: John
Robinson, The Transport Trust
Plural form: drivers side cab door closed
controls
CL Vehicles and vehicle components
BT <door controls>
drivers side cab door open control
A switch on the outside of
the driver's cab on a multiple unit train to open the cab doors independently
from the through door control of the passenger doors.
Warrant: John
Robinson, The Transport Trust
Plural form: drivers side cab door open
controls
CL Vehicles and vehicle components
BT <door controls>
drivers tea can
A metal flask intended to
carry tea for the footplate crew of a locomotive, usually with a cup provided as
the lid.
Literary warrant required.
Plural form: drivers tea cans
CL Tools and equipment
BT drivers equipment
drivers tool bag
A bag supplied by the
railway company to locomotive drivers to carry the tools and equipment required
for him to carry our his duties.
Literary warrant required.
Plural form:
drivers tool bags
CL Tools and equipment
BT drivers equipment
drivers torch lamp
A lamp consisting of an oil
can with a wick fitted through the spout, to give light to the driver in an
emergency.
Literary warrant required.
Plural form: drivers torch
lamps
CL Tools and equipment
BT drivers equipment
drivers windscreen
Scope note required.
Literary warrant required.
Plural form: drivers windscreens
CL Vehicles and vehicle components
BT cab component
<driving and control components>
Scope note required.
Plural form: <driving and control components>
CL Vehicles and vehicle components
BT vehicle component
NT cab control
NT creep control
NT slaking pipe
NT steam shut-off cock
NT <ancillary controls>
NT <ancillary gauges and instrumentation>
NT <autocoupler controls>
NT <automatic train control indicators>
NT <door controls>
NT <drivers brake controls>
NT <fuel and water controls and gauges>
NT <lighting controls>
NT <master controls>
NT <on-train communications equipment>
NT <reversing controls>
NT <speed regulation components>
NT <warning devices>
driving car
Scope note required.
Literary warrant required.
Plural form: driving cars
CL Vehicles and vehicle components
BT <passenger carriages by internal layout/facilities>
NT double-ended unit
NT single-ended unit
driving key from electric locomotive
Scope note required.
Literary warrant required.
Plural form: driving key from electric
locomotives
CL Vehicles and vehicle components
BT <master controls>
driving motor car
A powered passenger vehicle
usually used in a multiple unit train.
Warrant: Lexique General de Termes
Ferroviares, Union Internationale des Chemins de Fer, 1975
Plural form:
driving motor cars
CL Vehicles and vehicle components
BT power car
driving trailer
A passenger car without
traction equipment but fitted with a driving cab.
Warrant: The Railway
Dictionary, An A-Z of Railway Terminology, Alan A Jackson, Alan Sutton
Publishing, 1996
Plural form: driving trailers
CL Vehicles and vehicle components
BT trailer car
driving van trailer
A car without traction
equipment but fitted with a driving cab where the vehicle is used for luggage or
conductor's accommodation rather than passengers.
Warrant: Railway Technical
Web Pages, Piers Connor, 2000
Plural form: driving van trailers
CL Vehicles and vehicle components
BT trailer car
driving wheel
A locomotive wheel that
provides traction, being driven either directly via a connecting rod or
indirectly via coupling rods, chains, etc.
Warrant: Lexique General de
Termes Ferroviares, Union Internationale des Chemins de Fer, 1975
Plural
form: driving wheels
USE locomotive driving wheel
CL Vehicles and vehicle components
BT <wheels by function>
drop grate
A grate with part which can
be opened on hinges and through which the clinker or the whole fire can be
dropped if required.
Warrant: Locomotives and Their Working, C R H Simpson
& F B Roberts, Virtue & Co Ltd, 1952
Plural form: drop grates
CL Vehicles and vehicle components
BT grate
drop head buckeye coupling
A buckeye coupling that can
be lowered to reveal a standard hook for a screw or three link type
coupling.
Warrant: Heritage Railways Association - Glossary,
http://ukhrail.ac.uk/glossary, 2000
Plural form: drop head buckeye
couplings
CL Vehicles and vehicle components
BT coupling
drop light
A window that drops down
to open.
Literary warrant required.
Plural form: drop lights
USE droplight
CL Vehicles and vehicle components
BT light (vehicle window)
drop link
Scope note required.
Warrant: Great Western Railway Drawing Registers
Plural form: drop links
CL Vehicles and vehicle components
BT valve gear component
drop side wagon
A wagon with sides that drop
along their full length to give access for loading and unloading.
Literary
warrant required.
Plural form: drop side wagons
CL Vehicles and vehicle components
BT side door wagon
droplead
Flexible electrical power
connections to a bogie.
Warrant: LUL Jargon Buster
Plural form:
dropleads
CL Vehicles and vehicle components
BT <traction current transmission components>
droplight
A window, normally in a
carriage door, which can be lowered and secured with a leather strap or spring
clutch.
Warrant: The Railway Dictionary, An A-Z of Railway Terminology, Alan
A Jackson, Alan Sutton Publishing, 1996
Plural form: droplights
UF drop light
CL Vehicles and vehicle components
BT light (vehicle window)
droplight bottom rail
The bottom horizontal
component of a droplight frame.
Warrant: Railway Carriages and Wagons: Their
design and construction (reprinted articles from The Railway Engineer 1892-7),
Sidney Stone, republished by Peter Kay, circa 1997 Fig 512.
Plural form:
droplight bottom rails
CL Vehicles and vehicle components
BT droplight component
droplight component
A component forming part of
a vehicle droplight.
Literary warrant required.
Plural form: droplight
components
CL Vehicles and vehicle components
BT window component (vehicle)
NT droplight bottom rail
NT droplight stile
NT droplight top rail
NT window strap
RT droplight
droplight stile
A vertical side component of
a droplight frame.
Warrant: Railway Carriages and Wagons: Their design and
construction (reprinted articles from The Railway Engineer 1892-7), Sidney
Stone, republished by Peter Kay, circa 1997 Fig 512.
Plural form: droplight
stiles
CL Vehicles and vehicle components
BT droplight component
droplight top rail
The top horizontal component
of a droplight frame.
Warrant: Railway Carriages and Wagons: Their design
and construction (reprinted articles from The Railway Engineer 1892-7), Sidney
Stone, republished by Peter Kay, circa 1997 Fig 512.
Plural form: droplight
top rails
CL Vehicles and vehicle components
BT droplight component
dropper
A component of the overhead
line electrical equipment used to keep the contact wire at the correct
height.
Warrant: Railtrack Jargon Buster, 1999
Plural form: droppers
CL Track and track components
BT overhead line equipment
dual fitted vehicle
A vehicle fitted with both
the automatic vacuum brake and Westinghouse air brake.
Warrant: The Railway
Dictionary, An A-Z of Railway Terminology, Alan A Jackson, Alan Sutton
Publishing, 1996
Plural form: dual-fitted vehicles
CL Vehicles and vehicle components
BT fully fitted vehicle
dual voltage locomotive
An electric locomotive which
can operate over two systems with different supply voltages.
Literary
warrant required.
Plural form: dual voltage locomotives
CL Vehicles and vehicle components
BT <electric locomotives by voltage>
RT multiple collection locomotive
ducket
A small projecting window at
the side of a brake van to provide the guard with view along the train and the
line.
Warrant: The Railway Dictionary, An A-Z of Railway Terminology, Alan A
Jackson, Alan Sutton Publishing, 1996
Plural form: duckets
CL Vehicles and vehicle components
BT <vehicle body subassemblies>
ducket lamp
Scope note required.
Literary warrant required.
Plural form: ducket lamps
CL Vehicles and vehicle components
BT <artificial lighting components>
dummy
Slang for a shunting signal (see
ground disc).
Warrant: Railtrack Jargon Buster, 1999
Plural form:
dummies
USE ground signal
CL Control and communications
BT shunting signal
dump valve
An electrically controlled
valve used to reduce air brake cylinder pressure in the event of wheel slide or
skidding as part of a wheelslip control system, also the same type of valve is
used to reduce air pressure in air suspension systems when the load on the
system decreases.
Warrant: Railway Technical Web Pages, Piers Connor, 2000
Plural form: dump valves
CL Vehicles and vehicle components
BT <brake pipes, reservoirs, etc.>
duplex detonator
A single detonator with two
sets of explosives providing two fog signals in one case.
Warrant: The
Railway Dictionary, An A-Z of Railway Terminology, Alan A Jackson, Alan Sutton
Publishing, 1996
Plural form: duplex detonators
CL Control and communications
BT detonator
duplex gauge
An air gauge located in the
driver's cab with two indications (e.g. main reservoir pressure and brake pipe
pressure).
Warrant: Railway Technical Web Pages, Piers Connor, 2000
Plural form: duplex gauges
CL Vehicles and vehicle components
BT <brake controls>
duplex locking lever frame
An interlocking lever frame
where each lever is provided with two tappets, one operated by the lever catch
handle, the other by the motion of the lever.
Literary warrant required.
Plural form: duplex locking lever frames
CL Control and communications
BT interlocking frame
duty schedule plate
Scope note required.
Literary warrant required.
Plural form: duty schedule plates
CL Commercial records and equipment
BT <staff management systems>
dynamic track stabiliser
A self-propelled ontrack
machine for consolidating track ballast by inducing high frequency vibration
into the ballast.
Warrant: Railtrack Jargon Buster, 1999 Warrant: On-track
plant on British Railways, Roger Butcher, Platform 5 Publishing Ltd, 4th
edition, 1981, p17
Plural form: dynamic track stabilisers
CL Vehicles and vehicle components
BT <track maintenance vehicles>
dynamometer car
A coach adapted to carry
instruments and recording devices for measuring locomotive performance when
working a train on the line. Marshalled between the locomotive and the rest of
the train.
Warrant: The Railway Dictionary, An A-Z of Railway Terminology,
Alan A Jackson, Alan Sutton Publishing, 1996
Plural form: dynamometer
cars
CL Vehicles and vehicle components
BT <laboratory, workshop and tool vehicles>
dynamometer instrument
A precise tool used to
measure locomotive performance.
Literary warrant required.
Plural form:
dynamometer instruments
CL Tools and equipment
BT locomotive testing equipment
0-9, A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z, [Contents]
| © Collections Trust 2002. You may freely download this page for non-profit use, but must acknowledge Collections Trust (formerly MDA) & the Railway Terminology Working Group in any output in which it is used. |
