Implements or apparatus for applying pushing or pulling force – Floor jack type
Patent
1985-09-12
1987-04-28
Watson, Robert O.
Implements or apparatus for applying pushing or pulling force
Floor jack type
254 35, 254 93R, 254134, B66F 324
Patent
active
046608060
ABSTRACT:
Telescopically slidable tubular members incorporate a hydraulic jack for causing successive minute amounts of relative longitudinal extension thereof. The jack includes a hydraulic piston and cylinder mounted to the rear end of the forward tubular member. This assembly engages a pin inserted in a selected one of a plurality of longitudinally spaced holes in the forward end of the rear tubular member to thereby provide an initial overall length adjustment. A pump is removably mounted to the rear tubular member and is connected to the piston and cylinder assembly via hoses. The telescoping members are positioned diagonally so that a spade at the forward end of the forward tubular member engages an upper portion of a generally vertically oriented stud wall and so that a toothed base member pivotally connected to the rear end of the rear tubular member engages the floor. A carpenter can then remove and remotely operate the pump by hand to move the stud wall and thereby safely accomplish plumb and line adjustments.
REFERENCES:
patent: 737133 (1903-08-01), O'Brien
patent: 1482846 (1924-02-01), Harrah
patent: 2200133 (1940-05-01), Mandl
patent: 2583945 (1952-01-01), Jacobs
patent: 2762599 (1956-09-01), Faris
patent: 2764215 (1956-09-01), Adams et al.
patent: 2960309 (1960-11-01), Swanson
patent: 3143335 (1964-08-01), Lassahn
patent: 3851856 (1974-12-01), Berg
patent: 3945610 (1976-03-01), Solie et al.
patent: 4148462 (1979-04-01), Jessup
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