Post puller

Details Post puller Post puller

1986-10-15

1987-11-17

Schmidt, Frederick R.

Implements or apparatus for applying pushing or pulling force

Pipe or rod jack

Tie rod tensioner

254 30, 254132, E21B 1900

Patent

active

047069350

ABSTRACT:
A machine for extracting an elongate work piece from a medium in which it is imbedded. The machine includes a vertical gripping plate in opposed gripping relating with an eccentrically pivoted gripper. These gripping elements are carried on a rigid frame adapted for attachment to the three point hitch lifting mechanism found on tractors. When the work piece is gripped between the gripping elements, lifting of the frame by means of the lifting mechanism of the tractor, will extract the work piece. Auxiliary lifting force may be provided with optional fluid power operated cylinders. Linkages may optionally be provided to remotely move the pivoted gripper into and out of gripping relation. The linkages may be operated manually or with a hydraulic or other power operated cylinder.

REFERENCES:
patent: 2124154 (1938-07-01), Sovincz
patent: 2482950 (1949-09-01), Toftey
patent: 2553077 (1951-05-01), Braun
patent: 2662729 (1953-12-01), Fountain
patent: 3059905 (1962-10-01), Tompkins
patent: 3479012 (1969-11-01), Korczynski
patent: 3647185 (1972-03-01), Phibbs
patent: 4026522 (1977-05-01), Dranselka
patent: 4226402 (1980-10-01), Muth
patent: 4256286 (1981-03-01), Hudgins

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