Lifting apparatus

Details Lifting apparatus Lifting apparatus

1974-10-07

1976-03-23

Spar, Robert J.

Implements or apparatus for applying pushing or pulling force

Step-by-step traveling bar

Pawl actuated

212 39MS, 2541757, 307317R, 317 33VR, 323 22Z, B66D 148

Patent

active

039456129

ABSTRACT:
A lifting apparatus is provided with an upper limit position setting device which comprises a limit switch installed on a fixed part of the lifting apparatus and a dog provided on a rope which is adapted to move a load upward and downward. The dog and the limit switch are so arranged to determine the upper limit position to which the movement of the load is allowable.

REFERENCES:
patent: 3052878 (1962-09-01), Berry
patent: 3129686 (1964-04-01), Sakson
patent: 3233746 (1966-02-01), Fawell
patent: 3426263 (1969-02-01), Hennigan et al.
patent: 3596163 (1971-07-01), Barrett

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