Hydraulic earth boring machine

Details Hydraulic earth boring machine Hydraulic earth boring machine

1980-05-21

1981-12-22

Reynolds, Wm. Carter

Tool driving or impacting

With work engaging means supporting drive

Structure extends between opposed points

173 37, 173149, 173150, 173156, 175 53, E21C 510, E21C 900

Patent

active

043066267

ABSTRACT:
A hydraulic earth boring machine for forming conduit passageways beneath established surfaces such as roadways, walkways, or the like. The boring machine includes a hydraulic cylinder having an open axial passageway for receiving a boring shaft. A drive cylinder surrounds the boring shaft and is driven by the hydraulic cylinder. A gripping assembly is mounted upon a trailing end of the drive cylinder and selectively couples the drive cylinder to the boring shaft. An elevating and vertical aiming assembly is mounted upon the hydraulic cylinder for facilely providing positioning of the boring machine, in situ, within an earth trench. In addition, an axial bracing and horizontal angling assembly is mounted upon the cylinder for mounting the boring machine within the trench adjacent an established surface.

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patent: 3451491 (1969-06-01), Clelland
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