Boring or penetrating the earth – With above-ground means to feed tool
Patent
1994-11-29
1996-04-16
Novosad, Stephen J.
Boring or penetrating the earth
With above-ground means to feed tool
175203, 175170, 173 26, 173185, E21B 702, E21C 1102
Patent
active
055073549
ABSTRACT:
A post hole digger for attachment to the three-point hitch of a tractor comprises a mainframe having a position control/lock down assembly mounted thereto for raising and lowering the frame and securing the frame to the tractor. A pair of bipartite booms having first and second angled arms are pivotally mounted to the frame. A drill assembly is swingably mounted to a cross beam extending between the second boom arms of each boom. A pair of cylinders extending between the first boom arms and frame pivots the boom arms into and away from a ground drilling position. During the drilling process the bipartite boom configuration compensates for the tendencies of the drill to divert from a true vertical line. The driller transfers the weight of the tractor to the boom arms and the drill connected thereto so as to effectively drill holes in rock-laden soils.
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Danuser Machine Company, Inc. "Diggers" brochure, Form No. 2819.
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