Railways – Traction – Chain
Patent
1978-09-26
1981-09-08
Love, John J.
Railways
Traction
Chain
104 89, B61B 1002
Patent
active
042878292
ABSTRACT:
A power-and-free conveyor includes a number of pusher dog supporting members attached to a drive chain on a power line. Each pusher dog supporting member includes a pusher dog pivoted at an upper portion thereof and a stopper stopping the pusher dog in a vertical downwardly directed position, where the pusher dog can engage with the free trolley included in a carrier on a free line. The stopper has a pusher dog disengaging portion extending outward therefrom. A disengaging device is disposed on a conveyor line at a location where the carrier is to be brought to a stop. The disengaging device has a stopper raising member which projects into the path of travel of the pusher dog disengaging portion of the stopper. When the carrier reaches the location, the pusher dog disengaging portion of the stopper comes into contact with the stopper raising member which has already projected into the path and the stopper is raised, whereupon the pusher dog is released from the stopper and is disengaged from the trolley. As a result of that the carrier is brought to a stop.
REFERENCES:
patent: 3712241 (1973-01-01), Kuwertz
patent: 3906864 (1975-09-01), Kuwertz
patent: 3913494 (1975-10-01), Coleson et al.
patent: 4038925 (1977-08-01), Kuwertz
Love John J.
Nakanishi Metal Works Co. Ltd.
Weaver Ross
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