Boring or penetrating the earth – Boring without earth removal – Combined with earth removal
Patent
1980-10-23
1984-06-26
Pate, III, William F.
Boring or penetrating the earth
Boring without earth removal
Combined with earth removal
175 53, 175403, 175408, E21B 1100
Patent
active
044560788
ABSTRACT:
There is described a new and improved method and apparatus for boring subterranian holes between horizontally spaced locations, comprising a broaching head having a first trailing and a second leading end for cutting a bore hole through the ground, a rod string releasably connectible to the first end thereof for pushing the broaching head through the ground; a guiding head cooperating with the broaching head for guiding the movement of the broaching head between the horizontally spaced locations, and extruders to extrude the incised core of the bore. The broaching head is pushed between the locations to cut a core, which passes through the head, by forming first and second coaxial incisions, whereby subsequent removal of the core is facilitated.
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Pate III William F.
Scobey Robert
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