Implements or apparatus for applying pushing or pulling force – Step-by-step traveling bar – Pawl actuated
Patent
1976-04-16
1977-11-15
Spar, Robert J.
Implements or apparatus for applying pushing or pulling force
Step-by-step traveling bar
Pawl actuated
24136A, 188 654, 226186, 2541755, 254186HC, B66D 100
Patent
active
040582949
ABSTRACT:
The present invention relates to an apparatus for hauling a flexible, textile or metal rope, cable, or the like with positive friction drive, having a connection, a pulley for driving the cable by friction, a pressure roller applying the cable on the groove of the pulley, and mechanical means for connecting the connection to the pressure roller and transmitting to the pulley and to the cable the pull due to the load solely by means of the pressure roller, the assembly constituted by the connection, the pressure roller and the mechanical means connecting them being movable with respect to the pulley. The apparatus may serve as a self-lifting device for raising a person or a load along a cable or as fixed hoisting gear.
REFERENCES:
patent: 506707 (1893-10-01), Matts
patent: 2526935 (1950-10-01), Coker
patent: 2619201 (1952-11-01), Crookston
patent: 3516642 (1970-06-01), Pomagalski et al.
patent: 3622689 (1971-11-01), Sparks
patent: 3643921 (1972-02-01), Puretic
patent: 3776517 (1973-12-01), Davis et al.
patent: 3868089 (1975-02-01), Lindsey et al.
Spar Robert J.
Underwood Donald W.
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