Power and free conveyor with pusher disengaging means operable o

Details Power and free conveyor with pusher disengaging means operable o Power and free conveyor with pusher disengaging means operable o

1976-06-24

1978-02-14

Oresky, Lawrence J.

Railways

Traction

Chain

104172S, B65G 1742

Patent

active

040732371

ABSTRACT:
A power and free conveyor includes a number of upwardly and downwardly pivotable pushers attached at a specified spacing to a drive chain on a power line, dogs mounted on a number of carriers on a free line and engageable with the pushers, and pusher raising cams mounted on the carriers and each provided at its rear end with a recess for accommodating the dog. When a preceding carrier is brought to a halt, the pusher propelling a following carrier in engagement with the dog of the carrier is raised by the cam of the preceding carrier out of engagement with the dog, permitting the dog to enter the recess of the cam simultaneously therewith, whereby the following carrier is stopped in an overlapping relation to the preceding carrier. The carrier includes at least one main free trolley on which the dog is mounted and a subfree trolley positioned to the rear of the main free trolley and connected thereto by a universal joint, the subfree trolley being provided with the pusher raising cam. At any of horizontally and vertically curved line portions, the subfree trolley is movable along the curve independently of the main free trolley.

REFERENCES:
patent: 3411457 (1968-11-01), Gotsch, Jr.
patent: 3415201 (1968-12-01), Czarnecki
patent: 3623538 (1971-11-01), Wakabayashi
patent: 3662688 (1972-05-01), Desilets et al.
patent: 3667399 (1972-06-01), Czarnecki
patent: 3882793 (1975-05-01), Wakabayashi

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