Hatch cover and locking structure

Details Hatch cover and locking structure Hatch cover and locking structure

1984-07-30

1986-11-18

Reeves, Robert B.

Railway rolling stock

Special car bodies

Freight

220314, 220324, 292241, 2922565, 292259R, 292DIG60, B61D 3900

Patent

active

046229027

ABSTRACT:
The hatch of a cargo vessel, such as the hopper of a covered hopper car, is sealed by a hatch cover having a locking arrangement which prevents the hatch cover from being blown open by pressure within the hopper upon unlocking the lock. An over center locking arm has two locking detents on it which coact with two locking detents on a locking bar to selectively provide a sealed, pressure blow off and hatch open position. A rotative adjustment is provided to enable the sealing pressure of the hatch cover on the hatch to be selectively adjustable.

REFERENCES:
patent: 2408733 (1946-10-01), Campbell
patent: 2627950 (1953-02-01), Dath
patent: 2679419 (1954-05-01), Borland
patent: 3583334 (1971-06-01), Schuller
patent: 4388873 (1983-06-01), Carleton et al.
patent: 4441431 (1984-04-01), Carney, Jr. et al.
patent: 4570816 (1986-02-01), Ferris et al.

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