Device for hydraulic lift of reinforced concrete

Details Device for hydraulic lift of reinforced concrete Device for hydraulic lift of reinforced concrete

1977-09-26

1981-04-14

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Single throw lever

Special engaging feature

B66F 300

Patent

active

042615488

ABSTRACT:
A hydraulic jack provided for raising, leveling, and moving steel reinforced concrete. A hole is drilled vertically in the concrete to be lifted, and two wedges, a tapered and a straight wedge are lowered into the aperture in vertical contact. The tapered wedge is lowered into the hole first to protrude under the perifery of the round aperture and the straight wedge run down on the face opposite to the wedge.

REFERENCES:
patent: 235877 (1880-12-01), Jones
patent: 543017 (1895-07-01), Henderson et al.
patent: 2830789 (1958-04-01), MacMillan
patent: 3957247 (1976-05-01), Haller et al.

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