Handling: hand and hoist-line implements – Hook – hoistline – or grab type – Cable and hook tackle
Patent
1981-04-20
1987-03-31
Marbert, James B.
Handling: hand and hoist-line implements
Hook, hoistline, or grab type
Cable and hook tackle
294 74, B66C 114
Patent
active
046537929
ABSTRACT:
Apparatus for coupling a choker line which terminates at a nubbin to a main line in a log-hauling system. The apparatus includes an elongate body having an axially extending chamber of a size enabling confined axial movement of the choker nubbin therein. The choker nubbin and adjacent portion of choker line are receivable in the chamber by passage, in a direction substantially normal to the choker line axis, through an elongate keyhole slot formed in the body and extending to the lower end thereof. A shackle mounted on the upper end of the body for swinging toward and away from a position of axial alignment with the body fastens the body to the main line. A plate formed with the shackle acts to block passage of the choker nubbin through the keyhole slot at all shackle positions except a preselected one which is remote from the aligned position.
REFERENCES:
patent: 1381616 (1921-06-01), Clausen et al.
patent: 1720069 (1920-07-01), Yeaton
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