Hook device for locking pantograph

Details Hook device for locking pantograph Hook device for locking pantograph

1983-12-13

1986-04-29

Reeves, Robert B.

Electricity: transmission to vehicles

Collectors

Trolley retrievers

191 65, B60L 514, B60L 530

Patent

active

045859108

ABSTRACT:
A hook device for locking a pantograph comprising an air operating cylinder with a piston coupled to a piston rod. A hook is pivotally mounted on the piston rod and is controlled to engage with a portion of the pantograph under control of the pneumatic pressure and an engagement with a mechanical stopper. The device is useful for rigidly locking the pantograph a lowered position while retaining a shock absorbing clearance.

REFERENCES:
patent: 879267 (1908-02-01), Jackson
patent: 888339 (1908-05-01), Macloskie
patent: 930698 (1909-08-01), Self
patent: 1000779 (1911-08-01), Case
patent: 1224216 (1917-05-01), Schaake et al.
patent: 1400101 (1921-12-01), Schaake
patent: 1682432 (1928-08-01), Smith

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