B - Operations – Transporting – 61 – D
Patent
B - Operations, Transporting
61
D
105/123
B61D 7/02 (2006.01) B61D 7/18 (2006.01) B61D 7/26 (2006.01)
Patent
CA 1070564
ABSTRACT OF THE DISCLOSURE Disclosed is a hopper arrangement having a wall structure including a discharge opening and a downwardly swinging hopper door connected to the wall structure for opening and closing the discharge opening. An improved over- center locking mechanism for the hopper arrangement includes a lock support bracket connected to the wall structure of the hopper with a keeper member located on the door and a latch element having a keeper engaging end portion being pivotally mounted on the bracket adjacent to the opening. A first link is pivotally connected at one end to the latch element, and a bell crank lever is pivotally mounted on the bracket, the other end of the first link being pivotally connected to the bell crank lever. Means are connected to the bell crank lever for rotating the same to move the latch element through the first link between locking and unlocking engage- ment relative to the keeper, and the pivotal connection of the first link to the bell crank lever is movable to a latch locking, limiting over-center position relative to the pivotal connection of the first link to the latch element to secure the keeper engaging end portion in locking engagement with the keeper member.
285417
Ferris Ray L.
Raksanyi William
Schuller James J.
LandOfFree
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