Hydraulically operated grapple or timber fork

Details Hydraulically operated grapple or timber fork Hydraulically operated grapple or timber fork

1976-03-30

1977-10-04

Marbert, James B.

Handling: hand and hoist-line implements

Hook, hoistline, or grab type

Locking device

214147G, 214654, B66C 100

Patent

active

040520960

ABSTRACT:
A hydraulically operated grapple or timber fork provided with a wire tightened on the load to prevent the load from disarranging and falling out of the fork. The wire tension is obtained by a hydraulically operated stretcher. In order to ensure that the wire stretcher in all positions can be supplied with hydraulic fluid under pressure, a pressure accumulator is positioned between a hydraulic pressure source and the hydraulically operated wire stretcher.

REFERENCES:
patent: 2873874 (1959-02-01), Best et al.
patent: 3120898 (1964-02-01), Eaves
patent: 3477596 (1969-11-01), Michaelson et al.
patent: 3782567 (1974-01-01), Likas et al.
patent: 3840128 (1974-10-01), Swoboda, Jr. et al.

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