Implements or apparatus for applying pushing or pulling force – Pipe or rod jack – Lifter
Patent
1979-04-16
1980-10-07
Watson, Robert C.
Implements or apparatus for applying pushing or pulling force
Pipe or rod jack
Lifter
254124, 254132, 294106, B66F 102
Patent
active
042264022
ABSTRACT:
An improved post puller includes a U-shaped grapple and a pivot mount providing both a generally vertical pivot position for connection of the grapple to a draw bar and a base for mounting an operating handle thereto. One alternate embodiment provides adjustability. Further, the handle and pivot axis are specifically disposed in varying alternate positions for first rotating the grapple to grasp a post and then to permit rotation about another axis for post pulling. Another alternate embodiment includes a double grapple and actuating apparatus for opening and closing it about a post.
REFERENCES:
patent: 2505923 (1950-05-01), Taylor et al.
patent: 2740210 (1956-04-01), Hamborg
patent: 2807494 (1957-09-01), Bulfer
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