Ball drive mechanism for load supporting hanger

Details Ball drive mechanism for load supporting hanger Ball drive mechanism for load supporting hanger

1974-12-04

1976-06-29

Schacher, Richard A.

Railways

Traction

104108, B65G 3508

Patent

active

039658244

ABSTRACT:
A mechanism for moving one or more first load supporting hangers through a predetermined path that is defined by the interior of a hollow longitudinally slotted first frame. Each hanger is rotatably supported from a first ball that is movably supported within the first frame. The interior of the first frame not filled with first balls is filled with second balls. A first wheel that has pairs of spaced lobes on the circumference thereof projects through an opening in the first frame, with the pairs of lobes sequentially engaging the balls when the first wheels is rotated. The first and second balls and the hangers supported from the first balls are moved longitudinally in the first frame as such sequential engagement of the balls takes place. Should it be desired to move a platform having first and second ends through said predetermined path, the first end is connected to the first hanger, and the second end to a second hanger. The second hanger is rotatably supported from a first ball, which first ball together with a number of second balls completely fill a hollow longitudinally slotted second frame that is identical to the first frame and is parallel and laterally spaced from the latter. A second wheel identical to the first wheel and that rotates concurrently therewith sequentially engages the balls in the second frame to move the balls therein in the same direction and at the same rate as the balls in the first frame. By reversing the direction of rotation of the first and second wheels the direction of movement of the first and second hangers and platform extending therebetween may be reversed.

REFERENCES:
patent: 2424055 (1947-07-01), Rousseau
patent: 2517444 (1950-08-01), Rousseau
patent: 2877886 (1959-03-01), Braid
patent: 3160264 (1964-12-01), Raybould
patent: 3589785 (1971-06-01), Appleby

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