Material or article handling – Vertically swinging load support – Shovel or fork type
Patent
1979-06-11
1981-03-03
Rowland, James L.
Material or article handling
Vertically swinging load support
Shovel or fork type
172273, E02F 381
Patent
active
042537932
ABSTRACT:
A vehicle, such as a front end loader, having a work implement, a boom for raising and lowering the implement, and a tilt mechanism for pivoting the implement, includes a quick attach mounting assembly for releasably attaching various work implements such as buckets, snow plows, or grapples to the boom and tilt mechanisms. The quick attach assembly includes upper and lower trunnion pins in fixed spaced apart relationship on the back of the work implement, and a mounting unit pivotally mounted and interconnected between the boom and tilt mechanism which includes a frame, an upper trunnion-engaging member mounted on the frame engageable with the upper trunnion pin, and a lower trunnion-engaging member in the form of a pair of spaced pawls pivotally mounted on the frame that are engageable with the lower trunnion pins on the implement. The lower trunnion-engaging pawls include free swinging notched end portions that are normally biased by gravity to a non-engaged position in which the notched ends face forwardly from the boom. In operation, upon engagement of the saddle of the upper trunnion-engaging member with the upper trunnion pin and a slight elevation of the boom, the work implement pivots about the upper trunnion pin to move the lower trunnion pins into engagement with the notched end of the pawls, and to then pivot the pawls to a locking position. There is also provided lock means for securing the lower trunnion-engaging pawls in the locking position.
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