Retarder
A device which is laid close to the running rails of certain tracks in a hump yard, and when operated applies a retarding force to slow the speed of passing wagons.
Return Crank ...
Retarders are placed just below the crest of the hump and on each group of classification tracks. The one just below the crest is referred to as the junction or master retarder. Those placed in each group would be a group retarder.
Retarder
Braking system usually found in hump yards. Commonly pneumatically actuated, located on inside of rail, forcing a brake pad against the inside of the wheel flange, "pinching" the flange between the brake pad and the rail.
Retarder Yard ...
Retarder
A device used for decreasing speed; often used in hump yards to control the rate at which cars roll down the hump and into the classification tracks.
Rheostat ...
Retarder
A metal grip adjacent to the rails, usually operated by compressed air or electric motors, for regulating speed of a car by pressure on the wheels while rolling down a hump incline.
Retarder Yard ...
Retarder - A device used for decreasing speed; brakes.
Reversing - A station where train reverses direction of travel . May be at normal dead end or terminal station.
Braking
In a hump yard, rail mounted brakes are used to control speed of cars (see Retarders).
Branch
A portion of a division designated by a timetable. Rules and instructions pertaining to subdivisions apply on branches.
 See also: Switch, Track, Train, Locomotive, Car
  
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