Double locking door latch mechanism for railway hopper cars

Details Double locking door latch mechanism for railway hopper cars Double locking door latch mechanism for railway hopper cars

1978-10-25

1980-07-22

Sheridan, Robert G.

Material or article handling

Load-transporting type vehicle and external means...

Involving movement of load by gravity from wheeled vehicle

1052412, 292216, 298 35R, B61D 730, B65G 6724

Patent

active

042137250

ABSTRACT:
A hopper car door locking mechanism includes a rotatable latch member which includes a keeper receiving portion. The latch member also includes a positioning portion providing stops which are engaged by a rotatable locking pawl in the closed position of the hopper car door. The rotatable locking pawl includes a cam device which is pivoted in response to reciprocating movement of a rod having a suitable cam surface. The rod also includes a stop device which with the rotatable latch member provides a second stop which therefore provides for double locking of the door.

REFERENCES:
patent: 1175165 (1916-03-01), Morey
patent: 2686479 (1954-08-01), Shields et al.
patent: 2686605 (1954-08-01), Kepner
patent: 3905627 (1975-09-01), Fujita
patent: 4051960 (1977-10-01), Raksanyi
patent: 4158996 (1979-06-01), Marulic et al.

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