Drop bottom trucks or hoppers

Railway rolling stock – Special car bodies – Dumping

Patent

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Details

414388, B61D 702

Patent

active

047811250

ABSTRACT:
This invention relates to a hopper, and more particularly to a wheeled hopper for rail operation, including a container body which has a discharge opening in its underside, two doors which are pivotally connected to the body on opposite sides of its discharge opening with the pivot axes of the doors lying in the direction of travel of the hopper, the doors being movable between a first position in which they close the opening and a second position in which the opening is open, a door latch arrangement including an abutment formation on each door at one end of the hopper which, in the first position of the doors, are opposite and directed towards each other at a position above the pivot axes of the doors, a detent between the abutments for preventing movement of the doors from their first to second positions and means on the hopper body which is movable independently of the doors for moving the detent from between the abutments to enable the doors to move under gravity from their first to their second position.

REFERENCES:
patent: 1266630 (1918-05-01), Ross et al.
patent: 1294876 (1919-02-01), Chnapko
patent: 1333947 (1920-03-01), Travell
patent: 1378574 (1921-05-01), Weston
patent: 1418722 (1922-06-01), Leu
patent: 2686479 (1954-08-01), Shields et al.
patent: 3452886 (1969-07-01), Dorey
patent: 3765341 (1973-10-01), Ried
patent: 4244299 (1981-01-01), Peterson
patent: 4262601 (1981-04-01), Miller
patent: 4278382 (1981-07-01), Knippel
patent: 4339222 (1982-07-01), Knippel

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