Swingable bucket for excavators

Details Swingable bucket for excavators Swingable bucket for excavators

1975-08-07

1977-08-16

Spar, Robert J.

214768, E02F 332

Patent

active

040421317

ABSTRACT:
An excavator comprises a boom having a normally vertically disposed dipper stick pivotally mounted on an end thereof and a support bracket pivotally mounted on a lower end of the dipper stick for to and fro movements in a first plane. The bucket is pivotally mounted on a lower end of the support bracket for sideway movements relative thereto in a second plane perpendicular to the first plane. A first double-acting hydraulic cylinder is pivotally interconnected between an upper end of the dipper stick and an upper side of the bracket to selectively pivot the bracket in the first plane whereas a second double-acting hydraulic cylinder is pivotally mounted on an outer side of the bracket and to the bucket for selectively moving the bucket in the second plane.

REFERENCES:
patent: 2496696 (1950-02-01), Burner et al.
patent: 3231116 (1966-01-01), Powell
patent: 3289866 (1966-12-01), Emery
patent: 3896950 (1975-07-01), McCain

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