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

A

A.I.R.P.S.
Association of Independent Railway Preservation Societies
Axle Box
??

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B

Bagnall
Bagnall
Bardic Lamp
This is a special rugged torch with coloured filters. It can be used with a white light as a torch, and with the Red, Green and Orange filters can be used for signalling to other people on the railway at night time.
Block System
Blocks provide a method of stopping one train from running to the rear of another.
Brick Arch
The Brick Arch is located in the fire-box above the fire and below the tube plate, so making a combustion chamber above the arch. This helps to ensure that all the volatile material from the coal is burnt in the fire box.
BSK
Corridor Brake Second - a Coach with second class seating with a corridor to adjoining coaches, and a guards compartment.
BSO
Brake Open Second - a Coach with second class seating with a guards compartment.
BSOT
Brake Open Second Trolley - a Coach with second class seating with a guard compartment and space for a coffee/tea trolley.

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C

Calling-On Signal
A small signal, below the main signal, which allows the signal man to pass a signal at danger. 
CK
Corridor Composite - a Coach with First and Second class seating with a corridor to adjoining coaches.
CL
Lavatory Composite - a Coach with First and Second class seating with a Lavatory.
Crossing Lookouts
The person who supervises a Level Crossing, indicating to the driver that the crossing is clear, and stopping the public from crossing when the train is approaching.

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D

Disposing
When the engine has completed it days work, it is returned to the Shed, the fire-box is then cleared out. The Smoke Box is also cleaned out. The water tanks are filled, and the coal bunkers are filled. All of this hard work is covered by the phrase "Disposing the Engine".
DMBS
Driving Motor Brake Second
DMS
Driving Motor Second

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F

Firebox
The place where the combustion of coal (or oil) takes place that produces the hot gases that then pass through the boiler tubes to heat the water to produce the steam used to drive the locomotive.
Fish-plates
The rail is installed on to the track in short lengths (21 feet on our line). Steel or wrought iron plates placed in pairs at rail joints to bring the rail heads together, strengthen the joint and forming a contiguous running surface.
The term is believed to be a nautical in origin. When a sailing ship broke a spar, a temporary repair could be made by putting the broken ends together, placing two shaped pieces of wood on each side of the break (like splints) and securing them to the broken spar, usually by wrapping strong thin rope round the splints. For some reason this was not known as splitting the break, but fishing it.
When William Bridges Adams (1797 - 1872) patented his new method of jointing rails, he referred to the jointing plates as Fishplates. The first large railway company to use them as standard was the LNWR, which introduced them in 1853.
Formation
The formation is what connects the sleepers with the ground, the tracks foundations. As our track runs over heavy clay, we have clay, sand, a non-perminable membrane and finally balast
Frame
The Frame connects the wheels to the boiler, and supports the cylinders. Typically the frames are made from plate steel 5/8" to 3/4" thick, 12" to 18" deep and running the length of the engine.
Frame Stretchers
These are pieces of plate steel that run from side to side keeping the Frames the correct distance, and make a number of boxes down the length of the engine, thus adding to the rigidity of the engine.

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G

GUV
General Utility Van

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H

Hot Box
This is a term used to describe an axle box that has a problem, such that the friction heats up the casting. This can be cracked bearings, or lack of lubrication. Generally very bad news.
H.M.R.I.
Her Majesty's Railway Inspectorate. The government body that oversees the safe running of main line and preserved railways.

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L

Light Railway Order
Light Railway Order.

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N

NJV
NJV
Northampton Steam Railway Limited
Northampton Steam Railway Limited - Registered office 6 Hazlewood Road, Northampton.
Northampton & Lamport Railway Preservation Society
Northampton & Lamport Railway Preservation Society

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O

Off Shed
When enginemen talk of "Going Off Shed" they mean that they are going to take an engine from the Shed on the main running line.
Off, Signal
When a signal is up at an angle, or 'clear', it is said to be off. Signalmen talk about pulling that signal off.
On Shed
When enginemen talk of "Going On Shed" they mean that they are returning their engine to the Shed.
On, Signal
When a signal is horzontal, or at danger, it is said to be on.
Operating Officer
The Operating Officer is the person 'in charge' of all train movements on the Railway for that day.

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P

Peckett
Peckett
Push-Pull
Push-Pull
PMV
Parcels and Miscellaneous Vacuum

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R

Raising Steam
A steam locomotive is not like a car or a diesel engine. It takes a number of hours to heat the water in the boiler to generate the required pressure of steam. This stage of heating up is called "Raising Steam".
RBR
Restaurant Buffet (Refurbished) .

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S

Shed
Shed is where the locomotives are cleaned, maintained and stored until required for running.
Also see On Shed, Off Shed
Smoke Box
The Smoke Box is an extension at the front of the boiler barrel. It is air tight (except for the chimney) so that when exhaust steam from the cylinders goes up the chimney, it draws hot air through the boiler tubes from the fire-box.
Stays
Threaded metal rods used to hold the inner and outer sections of the firebox together or to hold the firebox to the boiler barrel
Standard Gauge
The Track Gauge is the distance between the rails of a track; measured from inside edge to inside edge of the rail head. Standard Gauge is the most widely used 4' 8½" (or 1,435mm).

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T

Transport and Works Act
Like planning permission, this provides for consultation will local folks for he granting of permission to run a railway.
TSO
Tourist Open Second - a Coach with Second class seating.
Tubes
The 'tubes' carry the hot gases and smoke from the firebox to the smoke box, through the water in the boiler.

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W

Under Keep Pads
??

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W

Waybeams
The rail is usually supported, and held in place by sleepers that cross at right angles to the rail direction. On Bridge 13 the 10" x 12" timbers run in the same direction as the track and are called Waybeams.
Warming Fire
It can take 10-15 hours to get a locomotive to working pressure from cold. So often on the afternoon before a running day, the fireman will put a Warming Fire in the engine and heat up the water until the pressure gauge just starts to move. The fire is then left to die, and then he will have a shorter wait the next morning.
Wheel Set
??

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Last Amended: 14-Feb-2006

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