Return to Home Page
Home Contact Us Member’s Area Can you help us? Can we help you? Glossary Site Map Search
London and North Western Railway Society
LNWRS Glossary
What does that word mean

You are here: Home  >  Glossary  >  Glossary — V

  0   4   A   Ao   B   Be   Bi   Bo   Br   Bs   C   Car   Cc   Ci   Coa   Con   Cr   D   Di   Dr   E   En   F   Fl   Fr   G   Go   Gr   H   Ho   I   J   K   L   Lo   M   Mo   N   Ne   No   O   P   Po   Pr   Q   R   Ri   Ro   S   Se   Si   Sl   Sm   Sp   Sta   Sto   T   Te   To   Tra   Tu   U   V   W   We   Wh   Wo   X   Y   ??
Loco Classes
  0-3   4-9   A-B   C-C   E-F   F-H   H-M   N-R   S-S   T-Z
  A-E   F-Z   M-S   T-Z
Webb Site
Search Glossary
Site News Links


Vacuum Brake
Each vehicle of an vacuum braked train will have a cylinder with a partial vacuum on both the ‘train pipe’ and ‘reservoir’ sides of the piston while the brakes are off. The brakes are applied by allowing air into the train pipe side, the resulting pressure differential will put the brakes on.
Vacuum Cylinder
Each coach and wagon employing vacuum brakesExplain 'Vacuum Brake' carried a vacuum cylinder (and sometimes two) to provide the force to apply the brakes when the vacuum in the brake pipe was removed. It is usally clearly visible hanging from the underframeExplain 'Underframe' looking like a cauldron approx 2ft in diameter and 18in deep, with operating rod emerging from the bottom. This was a development of the Vacuum SackExplain 'Vacuum Sack'.
Vacuum Sack
Seen hanging from the underframe, with the rodding emerging fore and aft to operate the brakes on carriages and wagons. Later repalced with the Vacuum CylinderExplain 'Vacuum Cylinder'.
Valve Chest
The chest or chamber that contains the mechanism that controls the admission of steam into the cylinders.
Valve-Chest Lubricators
These were a Displacement LubricatorExplain 'Displacement Lubricator' that oiled the moving parts in the Valve ChestExplain 'Valve Chest'.
Valve Gear
The system of rods and cranks which connect the pistonsExplain 'Piston' and valvesExplain 'Valves' to the wheels and controls the admission of steam to the cylindersExplain 'Cylinder'.
See BakerExplain 'Baker Valve Gear', BulleidExplain 'Bulleid valve gear', CaprottiExplain 'Caprotti Valve Gear', CossartExplain 'Cossart valve-gear', GoochExplain 'Gooch Valve Gear', JoyExplain 'Joy’s Valve Gear', StephensonExplain 'Stephenson’s Valve Gear' and WalschaertsExplain 'Walschaerts valve-gear' valve gear.
Valve Rod
A rod which is connected to the moving part of a valve. Aka Valve Spindle
Valve Spindle
A rod which is connected to the moving part of a valve. AKA Valve Rod
In a steam engine, steam has to be admitted to and exhausted from, the cylindersExplain 'Cylinder' at the right moment in the cycle. This is achieved by a valve arrangement inside the steam chestExplain 'Steam Chest', which is located next to each cylinder.
A railway goods vehicle which has a roof.
A long bridge-like structure, typically a series of arches, carrying a railway across a valley or other low ground.
Viaduct Works
?? Became Earlestown Wagon Works
Vulcan Foundry
A major locomotive builder, whose works were a few hundred yards south of Earlestown stationExplain 'Earlestown'.
© 2001-5 LNWR Society   Updated: 16-Apr-04 Privacy Notice
Technical   Please pass your comments on this Webb site to Webb Master. Terms of Use