Tool driving or impacting – Single advance causing or controlling means or manipulating...
Patent
1981-11-27
1984-05-15
Yost, Frank T.
Tool driving or impacting
Single advance causing or controlling means or manipulating...
173126, 173129, B25D 100
Patent
active
044482647
ABSTRACT:
A driving pole for a ground rod or the like is provided wherein the ground rod is positioned in the hollow interior and driven into the ground in increments. Vertically spaced cross pins provide incremental stops for engaging the top of the ground rod for driving the rod into the ground as the pole is forced downwardly. The cross pins are preferably mounted on a bracket and spring biased into engagement tending to force the pin into the stop position. After each driving increment, the pole is raised, preferably with a rapid movement, the ground rod moves downwardly relative to the pole and the next lower pin 20 snaps into position for engagement with the top of the rod for driving. The biasing spring is mounted within the U-shaped bracket and a handle is provided for retracting the pins with a latch for holding the pins in the retracted position for insertion of the ground rod.
REFERENCES:
patent: 2693086 (1954-11-01), Caruthers et al.
patent: 2802340 (1957-08-01), Tallman
patent: 2998087 (1961-08-01), Iddings
patent: 3073571 (1963-01-01), Wunsch
patent: 3115199 (1963-12-01), Linabery
patent: 3412812 (1968-11-01), Kindsfater
patent: 3499497 (1970-03-01), Moore
patent: 3712389 (1973-01-01), Smoak
patent: 3735819 (1973-05-01), Ramsey
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