Material or article handling – Round hay bale handling
Patent
1997-11-06
1999-04-06
Krizek, Janice L.
Material or article handling
Round hay bale handling
414703, 414715, 414920, A01D 8712
Patent
active
058908641
ABSTRACT:
A load lifting scissors lift assembly, as an attachment for the three-point-hitch of a farm tractor, which utilizes a scissors-action, hinged, expandable linkage. The Heavy-duty Hay Scissors Lift assembly contains one pair of crossed lever arms, each connecting to a vertical load engaging structure (in the case described, a hay spike arrangement), the first through intermediate connection to a variable length middle arm, or third arm, and the second through direct connection to the lowest point of the load engaging structure. The assembly is constructed to multiply the lift of the tractor's lift arms. The expanding linkage is capable of lifting standard six-foot high round bales of hay or other material, outwards and upwards and placing one bale on top of another. The Heavy-duty Hay Scissors Lift is constructed without the use of additional hydraulics, to minimize the cost of materials, complexity, maintenance, and redundancy (a tractor having lift arms already has hydraulics). An alternate embodiment of the invention is constructed with the replacement of the intermediate member with a hydraulic cylinder which adds the ability to release the load while elevated for deposit over a fence, rail, or hay guard structure.
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