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]

1,500V DC locomotive
An electric locomotive which picks up its electricity supply at 1,500 Volt direct current.
Warrant: Electric Railway Engineering, H F Parshall & H M Hobart, D Van Nostrand Co., 1910
Plural form: 1,500V DC locomotives

CL Vehicles and vehicle components
BT <electric locomotives by voltage>

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3-hole disc wheel
A railway vehicle wheel in which the axle and rim are joined by a disc pierced by three holes to reduce weight without compromising strength.
Literary warrant required.
Plural form: 3-hole disc wheels

USE three hole disc wheel
CL Vehicles and vehicle components
BT disc wheel

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3-link coupling
A simple form of coupling comprising three elongated chain links attached to the drawbar hook. The end link is placed over the drawbar hook of the adjacent wagon to effect the coupling.
Literary warrant required.
Plural form: 3-link couplings

USE three link coupling
CL Vehicles and vehicle components
BT coupling

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25kV AC locomotive
An electric locomotive which picks up its electricity supply at 25kV alternating current and transforms it to lower voltage for use by the traction motors.
Warrant: AC Electric Locomotives of British Rail, B Webb & J Duncan, David & Charles, 1979
Plural form: 25kV AC locomotives

CL Vehicles and vehicle components
BT <electric locomotives by voltage>

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45 degree tappet lever frame
A type of mechanical interlocking frame utilising a locking tray at 45 degrees to the vertical.
Warrant: Ray Towell, Curator of Operations, National Railway Museum
Comments: In original entry 'tappet' was spelt 'tappit' but all the signalling references I have seen use 'tappet' which is also the form given in the OED (although one early 19th century usage spells it 'tappit'. [SAH]
Plural form: 45 degree tappet lever frames

CL Control and communications
BT interlocking frame

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630V DC locomotive
An electric locomotive or powered unit which picks up its electricity supply (from a third or fourth rail) at 630 Volt direct current.
Warrant: Electric Railway Engineering, H F Parshall & H M Hobart, D Van Nostrand Co., 1910
Plural form: 630V DC locomotives

CL Vehicles and vehicle components
BT <electric locomotives by voltage>

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660V DC locomotive
An electric locomotive or powered unit which picks up its electricity supply (from a third or fourth rail) at 660 Volt direct current.
Warrant: Electric Railway Engineering, H F Parshall & H M Hobart, D Van Nostrand Co., 1910
Plural form: 660V DC locomotives

CL Vehicles and vehicle components
BT <electric locomotives by voltage>

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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]