Cam operated hatch cover holddown

Details Cam operated hatch cover holddown Cam operated hatch cover holddown

1976-02-26

1977-11-08

Gilliam, Paul R.

Railway rolling stock

Special car bodies

Freight

220324, 2922565, 292257, B61D 3900, B65D 4520

Patent

active

040570207

ABSTRACT:
A hatch latch mechanism for a railway hopper car having a longitudinally extending handle pivotally and slidingly linked to a hopper car roof which can be upwardly and rearwardly rotated to extend entrappingly across an outboard projection of a hatch cover holddown bar. The handle includes a bottom camming portion downwardly engageable with the outboard projection to compress the hatch cover gasket as the handle is rearwardly rotated to seal the hatch; thereafter, the handle is urged forward in slidingly upward engagement about the outboard projection of the holddown bar by the upward force of the compressed gasket against the hatch cover to insure automatic positive locking of the latch.

REFERENCES:
patent: 1664972 (1928-04-01), Dudderar
patent: 1739911 (1929-12-01), McMurray
patent: 1799464 (1931-04-01), Hiser
patent: 2324356 (1943-07-01), Brown
patent: 3800714 (1974-04-01), Stark et al.

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