Fence post driver

Implements or apparatus for applying pushing or pulling force – Pipe or rod jack – Tie rod tensioner

Patent

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Details

E21B 1900

Patent

active

045195846

ABSTRACT:
An apparatus for driving fence posts. An inner pipe is received within an outer pipe for coaxial sliding relative thereto. The outer pipe is mounted on a vehicle in a substantially upright position. A cable is journaled over a pulley mounted on the top of the inner pipe. One end of the cable is fixed to the outer pipe while the other end is wound on a winch mounted on a platform attached to the outer pipe. A spring biases the inner pipe upwardly in order to maintain the journaled engagement of the cable and the pulley. When the winch is turned on, the inner pipe is forced downwardly thus driving into the ground a fence post positioned within said outer pipe beneath said inner pipe.

REFERENCES:
patent: 83687 (1868-11-01), Borgort
patent: 759412 (1904-05-01), Beane
patent: 2244899 (1941-06-01), Smith
patent: 2456852 (1948-12-01), Anderson
patent: 2551896 (1951-05-01), Notestein
patent: 2636092 (1953-04-01), Lindquist
patent: 2645453 (1953-07-01), Nelson
patent: 2657010 (1953-10-01), Sabin et al.
patent: 2742258 (1956-04-01), Rosasco
patent: 2888245 (1959-05-01), Anderson
patent: 2901215 (1959-08-01), Jones
patent: 3338558 (1967-08-01), Gostomski
patent: 3365952 (1968-01-01), Wang
patent: 3902326 (1975-09-01), Langenbach
patent: 3910556 (1975-10-01), Tiede
patent: 4258905 (1981-04-01), Brabander

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