US PATENT SUBCLASS 105 / 301
.~.~.~.~ Creeping-shaft lock

Current as of: June, 1999
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105 /   HD   RAILWAY ROLLING STOCK

238.1  DF  SPECIAL CAR BODIES {11}
239  DF  .~ Dumping {14}
286  DF  .~.~ Door actuators {10}
300  DF  .~.~.~ Chain winder {3}
301.~.~.~.~ Creeping-shaft lock

DEFINITION

Classification: 105/301

(under subclass 300) Chain-winding shafts, which, as the door seats in closed position, shift bodily under the edge of the door and act as a lock for the door.