Combination hatch covers

Details Combination hatch covers Combination hatch covers

1976-06-08

1977-08-09

Bertsch, Richard A.

Railway rolling stock

Special car bodies

Freight

B61D 3900

Patent

active

040403637

ABSTRACT:
In accordance with the present invention a combination hatch cover design is provided in a railway hopper car roof wherein a smaller hatch cover is entirely mounted upon a larger, preferably elongated or continuous hatch cover and wherein the smaller hatch cover can be operated independently of the locking arrangement of the larger cover. The combination hatch covers of the present invention may be made of metallic or non-metallic material, preferably of metal alloy or reinforced plastic. If desired, the small cover can be mounted with its axis along the longitudinal axis of the large cover whereby in open position the small hatch cover will not obstruct the walkway on the car.

REFERENCES:
patent: 1226511 (1917-05-01), Harper
patent: 2067994 (1937-01-01), Thwaits
patent: 2346636 (1944-04-01), Porter
patent: 2485814 (1949-10-01), Cohan
patent: 2999559 (1961-09-01), Boyer
patent: 3217661 (1965-11-01), Kemp
patent: 3228353 (1966-01-01), Carney
patent: 3259078 (1966-07-01), Radey
patent: 3523506 (1970-11-01), Williams
patent: 3631816 (1972-01-01), Miller
patent: 3677196 (1972-07-01), Schuller
patent: 3796168 (1974-03-01), Zeller

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