Door tripping device for railway hopper car

Details Door tripping device for railway hopper car Door tripping device for railway hopper car

1975-04-28

1976-09-07

Paperner, L. J.

Railway rolling stock

Special car bodies

Sleeping

105241C, B65G 6724

Patent

active

039789977

ABSTRACT:
A railway hopper car is provided with bottom discharge doors which include an opening and closing mechanism for each of the doors. The mechanism comprises a bell crank lever and linkage arrangement which in the closed position assumes an over-center lock position. The doors are initially actuated to an open position for affecting gravity discharge by means of a track side cam. A second closing cam structure is provided, which, as the car passes therethrough on opposite sides of the track, the bell crank lever and linkage mechanism is again moved to its closed over-center position locking the doors. The closing cam includes a spring actuated portion built into the cam face which is adapted to assist in the operation of the bell crank lever again moving to its over-center position.

REFERENCES:
patent: 2430517 (1947-11-01), Lunde
patent: 2815721 (1957-12-01), Shields
patent: 3266679 (1966-08-01), Arbel
patent: 3765341 (1973-10-01), Ried
patent: 3872796 (1975-03-01), Adler et al.

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