Detentable automatic hatch latch apparatus

Details Detentable automatic hatch latch apparatus Detentable automatic hatch latch apparatus

1975-10-06

1978-06-13

Moore, Richard E.

Closure fasteners

Clamps

Hatch fastener

E05C 330, B63B 1914

Patent

active

040945421

ABSTRACT:
Novel hatch latch apparatus operable upon dropclosing of an elongated trough or circular hatch cover to effect automatic locking of the hatch cover's striker bar to a covered hopper car's roof whereby the hatch cover's compression seal is compressably seated and sealed against the hatch opening's coaming. Detented unlatching of the hatch cover is effected by operation of an associated detent lever which positively places the apparatus' latch lever out of operational engagement with the hatch cover's striker bar. When in the inoperative detent position, the novel latch apparatus is further operable upon a subsequent drop-closing of the hatch cover and its associated striker bar to effect reactivation of the latch lever from the detent position to the normal latching position, therefore again effecting automatic locking.

REFERENCES:
patent: 196030 (1877-10-01), Martin
patent: 2239327 (1941-04-01), Holby
patent: 2288926 (1942-07-01), Strader
patent: 2816683 (1957-12-01), Miers et al.
patent: 3324817 (1967-06-01), Olsson

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