B - Operations – Transporting – 66 – D
Patent
B - Operations, Transporting
66
D
254/71
B66D 1/22 (2006.01) B66D 1/38 (2006.01)
Patent
CA 1172624
ROGERS, BERESKIN & PARR C A N A D A ABSTRACT OF THE DISCLOSURE A power winch has a spool, a drive for rotating the spool to collect windings of cable, and a level wind to provide orderly placement of the windings. The point of receipt of cable on the spool is varied by a cable guide supported by the framework of the level wind and driven in a reciprocating fashion parallel to the axis of the spool. The cable guide is timed from the spool drive to advance a fixed distance with each rotation of the spool. Ideally the fixed distance corresponds to the diameter of the cable, but in practice the cable diameter may vary significantly. In such a context the invention provides a regulator which permits the level wind to accommodate variations in cable diameter. The regulator comprises an electic motor and a gear assembly which combines rotational power received from the electric motor and the spool drive and applies the rotational power so combined to the drive assembly and the cable guide to obtain the reciprocating motion. The spool drive remains the primary source of rotational power (effectively driving and timing the cable guide), and the electric motor is selectively activated to accelerate or retard the motion of the cable guide in response to observed or detected irregularities in winding placement, particularly irregularities occasioned by variations in cable diameter.
390360
Bereskin & Parr
Hepburn (john T.) Limited
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