Tractor-mounted machine and method for driving steel posts

Details Tractor-mounted machine and method for driving steel posts Tractor-mounted machine and method for driving steel posts

1992-02-25

1993-09-28

Smith, Scott

Tool driving or impacting

Processes

173 26, 173120, 173124, 173185, E02D 706

Patent

active

052480011

ABSTRACT:
In accordance with an illustrative embodiment of the present invention, a steel post driving machine that is mounted on the lift mechanism of a tractor includes a mast having a tubular hammer slidably guided thereon, springs to accelerate the hammer downward, a cable to lift the hammer and lengthen the springs to store potential energy therein, and a mechanism coupled to the cable and powered by the PTO of the tractor for intermittently pulling on and then releasing the cable to cause the hammer to strike repeated impact blows on the top of the steel post. Upper and lower devices are included to maintain the mast in alignment with the post as the lift mechanism is being lowered and the post is being driven into the ground by the hammer.

REFERENCES:
patent: 1944572 (1934-01-01), Rawlings
patent: 2410508 (1946-11-01), Lamme
patent: 2659584 (1953-11-01), Dorkins
patent: 2792689 (1957-05-01), Phares
patent: 3447613 (1969-06-01), Lisenby
patent: 3605912 (1971-09-01), Fisher
patent: 4002210 (1977-01-01), White
patent: 4050526 (1977-09-01), Deike
patent: 4732220 (1988-03-01), Johnsson

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