Cable tension control

Details Cable tension control Cable tension control

1975-10-28

1978-09-12

Reeves, Robert B.

Implements or apparatus for applying pushing or pulling force

Step-by-step traveling bar

Pawl actuated

226113, 254138, B66D 176

Patent

active

041132378

ABSTRACT:
A cable pay-out drive is positioned between the winch drum and a clam shell supported by the cable. To lower the clam shell, the pay-out drive pulls cable from the drum under constant tension. To raise the clam shell, the winch drum retrieves cable, again with the cable under constant tension between the drum and pay-out drive. One sheave of the pay-out drive is mounted for movement in response to the load of the clam shell on the cable and that sheave is associated with a load cell which translates the cable load into a gauge reading so that the magnitude of the load being raised is continuously monitored from within the crane cab.

REFERENCES:
patent: 2396852 (1946-03-01), Illmer
patent: 2443028 (1948-06-01), Edwards
patent: 2678173 (1954-05-01), Phelps
patent: 2862673 (1958-12-01), Smaltz
patent: 3037720 (1962-06-01), Leithiser
patent: 3057162 (1962-10-01), Lee
patent: 3801071 (1974-04-01), Barron
patent: 3879016 (1975-04-01), Kankkunen

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