Railway rolling stock – Special car bodies – Dumping
Patent
1983-02-16
1985-08-13
Reese, Randolph A.
Railway rolling stock
Special car bodies
Dumping
105308P, B61D 720, B61D 722
Patent
active
045342989
ABSTRACT:
This disclosure relates to a frame adapted to be attached to a hopper car, a door plate slidably mounted on the frame, and an automatically engageable lock mounted on the frame adjacent the door plate and operable to hold the door plate closed when engaged. The lock includes pivotably mounted parts including a latch. One of the parts, which may be the latch, has a seal hole therein, and this seal hole is aligned with another seal hole in the frame when the lock is engaged. The seal holes are spaced from an adjacent edge of the frame a distance which is related to the size of the seal band such that there is little slack in the seal when the parts are coupled together. Further, the parts are shaped to require a substantial turning movement of the latch before the lock is disengaged, and the latch is unable to turn this distance because of the small amount of slack in the seal. Consequently the lock is prevented from accidentally disengaging when the seal is in place.
REFERENCES:
patent: 3035530 (1962-05-01), Meyers et al.
patent: 3683820 (1972-08-01), Floehr
patent: 3707126 (1972-12-01), Nester
patent: 4099468 (1978-07-01), Adler
patent: 4256042 (1981-03-01), Fischer
patent: 4301741 (1981-11-01), Chierici
patent: 4450773 (1984-05-01), Fritz et al.
Keystone Industries Inc.
Reese Randolph A.
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