Implements or apparatus for applying pushing or pulling force – Apparatus for hauling or hoisting load – including driven... – Device includes rotatably driven – cable contacting drum
Patent
1979-09-17
1982-01-05
Feldman, Peter
Implements or apparatus for applying pushing or pulling force
Apparatus for hauling or hoisting load, including driven...
Device includes rotatably driven, cable contacting drum
254286, 254299, 182 36, B66D 152, B66D 158
Patent
active
043090230
ABSTRACT:
Apparatus for suspending a scaffold or the like, used for working on the outer walls of buildings, comprising a capstan made up of four pairs of pulleys driven by an electric motor. The pulleys have grooves for receiving suspension cables, each of which is wound over a pair of pulleys in five turns. On the slack-portion side, each cable is guided over a traverse mechanism, then runs onto a reel mounted via friction couplings on a shaft. This shaft is driven by the motor when the scaffold is raised, while during the descent it is locked by a monodirectional coupling, a driving wheel then being free on the shaft. A safety release device intended to intervene in case of lessening of the tractive force yielded by the friction couplings is combined with the traverse mechanism. If the tension of the slack portion of cable drops below a given threshold, a safety release cuts off the current supply to the motor and actuates an electromagnetic brake.
REFERENCES:
patent: 3263965 (1966-08-01), Mutch
patent: 3462125 (1969-08-01), Gollwitzer et al.
patent: 3606257 (1971-09-01), Wilson
patent: 3776368 (1973-12-01), Brauss
patent: 3834673 (1974-09-01), Alexander
patent: 4140287 (1979-02-01), Hutzenlaub
Kupfer Joe
Plumettaz Gerard
Feldman Peter
Gebr. Kupfer
Plumettaz S.A.
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