Handling: hand and hoist-line implements – Article carrier gripped and carried by hand – Convertible to – or useable as – different device or different...
Patent
1976-08-26
1977-06-21
Spar, Robert J.
Handling: hand and hoist-line implements
Article carrier gripped and carried by hand
Convertible to, or useable as, different device or different...
294115, 294118, B66C 162
Patent
active
040306259
ABSTRACT:
Hydraulically activated, spaced apart, front end loader support arms extend from a tractor. A loader attachment includes a vertically extending frame pivotally attached to the support arms forwardly of the tractor. This vertical frame includes a main horizontal frame support bar pivotally mounted in outer ends of the support arms, and a pair of open vertical guides which extend downwardly from the frame support bar. A horizontal hook support bar extends through the vertical guides and pivotally supports central portions of the two jaw-forming hooks at each end thereof. Upper ends of each of these hooks are pivotally connected to links which are pivotally connected to the frame support bar. A vertical hook support bar lifting strap extends integrally up from the hook support bar and is in sliding relationship with respect to the frame support bar. To load, means is provided to raise the lifting strap with respect to the main frame, thus to cause the jaws to be opened. The support arms are then lowered to encompass a log to be lifted. The lifting strap is allowed to drop by gravity to cause the hooks of the jaws to close on the object to be lifted, and the loader support arms are lifted to raise the log from the ground. To unload, the support arms are lowered, and when the log comes in touch with the ground, the further progess of the loader support arms in downward direction will cause the jaws to be released.
REFERENCES:
patent: 3051521 (1962-08-01), Skowron
patent: 3456822 (1969-07-01), Smith
Abraham George F.
Spar Robert J.
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