Protected gate lock for hopper cars

Details Protected gate lock for hopper cars Protected gate lock for hopper cars

B - Operations, Transporting

61

D

B61D 7/26 (2006.01)

Patent

CA 2108218

Hopper apparatus for controlling the discharge of lading from a hopper of a railway car through an opening in which a door opens and closes the opening and is moved from the closed position to the opening position by rotatable gears and by racks attached to the door. The door is curved and rides on tracks disposed to urge the door to its closed position by gravity. The gears are rotated by a drive shaft having end portion for receiving a rotating tool,and the door is locked in its closed position by locking means including a ratchet wheel on the drive shaft and a pawl controlled by a handle assembly which, in the locked position of the door, covers the end portions of the drive shaft so that it is necessary to move the handle assembly to expose the end portions and to release the pawl from the ratchet wheel before the drive shaft can be rotated to open the door. Also, a relationship between the number of teeth on the ratchet wheel and the door drive to provide small locking increments and a spring bias on the pawl to prevent disengagement of the pawl from the ratchet wheel during car transit.

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