Tree and the like obstacle extractor

Details Tree and the like obstacle extractor Tree and the like obstacle extractor

1974-06-05

1976-03-30

Smith, Al Lawrence

Implements or apparatus for applying pushing or pulling force

Pipe or rod jack

Lifter

254 93R, 254133R, E21B 1900

Patent

active

039469883

ABSTRACT:
A device for extracting trees, stumps and the like obstacles from the ground of the type having a pressure medium cylinder supported on a stand and with a holding member carried by its piston rod is provided which permits manual operation, the piston rod being spaced from the holding member and connected to a guide member for contacting the obstacle, and a holding member with a holding link for gripping the partly pulled out obstacle being rigidly mounted on the pressure cylinder.

REFERENCES:
patent: 2681789 (1954-06-01), Nichols
patent: 3155372 (1964-11-01), Brown
patent: 3548899 (1970-12-01), Emerson
patent: 3734463 (1973-05-01), Enright
patent: 3773292 (1973-11-01), Thiermann

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