Screw operated jack

Details Screw operated jack Screw operated jack

1980-06-16

1982-07-13

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Floor jack type

Screw

254 98, 29238, 29239, 29257, 269 88, 269147, 269204, 269252, B25B 102

Patent

active

043391133

ABSTRACT:
A bar clamp of the type which uses standard pipe for the bar and modified for jacking. The jack includes first and second pipes of suitable length each threaded at at least one end thereof. The first pipe is substantially longer than the second pipe and has a first jaw member slidable therealong for quick positioning and lockable at any position. A mounting bracket having a threaded bore extending from one face thereof to and through an opposite face interconnects the first and second pipes. A second jaw member is slidable along the second pipe and movable by rotating a threaded rod that extends through an additional threaded bore in the bracket. A handle is swingably connected to one end of the threaded rod for use in rotating the same.

REFERENCES:
patent: 1187109 (1916-06-01), Stevernagel
patent: 2221325 (1940-11-01), Holman
patent: 3061302 (1962-10-01), Dennis
patent: 4042264 (1977-08-01), Shumer

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