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US 4,399,979 AGranted
Device for self-tailing a conventional winch drum
OwnerMichael R. Adelmaninventor
Life of this patent
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Abstract
A device for self-tailing a conventional winch drum utilizing the motion of the hauled in line under load to provide, through a multiple sheave assembly, the tension on the free end of the line necessary to render the winch drum operational and properly haul in the line.
Claims2
A device for self-tailing a winch, comprising:
- a frame member having a pair of coaxial sheaves journalled thereon, a first one of said sheaves having a groove configured to securely grip a line and the second sheave having a groove configured to frictionally receive a line;
- a clutch device connecting said sheaves for positively rotating said first sheave by said second sheave in at least one direction;
- and
- means adapted to prevent rotation of at least said first sheave in the other direction, whereby a line to be hauled may be reeved in the groove of said second sheave, trained around a winch or the like then reeved in the groove of said first sheave and thereby effect self-tailing when said line is hauled by said winch to rotate said second sheave in said one direction.
1 more element
Dependencies are inferred from the claim text.