Wallboard jack

Details Wallboard jack Wallboard jack

1986-04-21

1987-12-15

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Single throw lever

Special engaging feature

B66F 300

Patent

active

047127716

ABSTRACT:
A jack for raising and holding articles such as wallboard, comprising a base [15] with a pivotally attached lever assembly [16] mounted on the base in a manner that downward pressure on one end will raise the other end. Releasable ratchet means [35] is connected for holding the lever in the raised position.

REFERENCES:
patent: 671554 (1901-04-01), Heisler
patent: 1018282 (1912-02-01), Warner
patent: 2692753 (1954-10-01), Masterson
patent: 2904309 (1959-09-01), Mayville
patent: 2989286 (1961-06-01), Gillespie

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