Boring or penetrating the earth – With above-ground cleaner for boring means
Patent
1992-03-09
1993-09-07
Britts, Ramon S.
Boring or penetrating the earth
With above-ground cleaner for boring means
175313, E21B 4100, E21B 1206
Patent
active
052420272
ABSTRACT:
Apparatus (30) is disclosed for preventing accumulation of debris such as clay, dirt or stones in the flighting (28) of an elongated earth auger (12) so that when the auger is removed from a bore hole while continuing to rotate, accumulated debris is not left in the flights which could fall on adjacent workmen or equipment. The apparatus includes a fan-shaped flight cleaning device (76) having a rotatable hub (80) which carries a series of radially extending, co-planar petal elements (82) adapted to successively extend into the auger flighting to dislodge debris tending to accumulate in the flights. As the auger rotates, the flighting engages the edges of the petal elements to cause the cleaning device to rotate and successively bring the petal elements into the area between adjacent flight sections for dislodgement of debris tending to accumulate in such areas. Pivotal mounting means (60, 84) for the flight cleaning device (58) allows the device to be deflectable as necessary to clear cylindrical connector collars of the auger, or to swing out of the way when a debris dislodgement element encounters debris wedged in the auger flighting that could damage the cleaning device.
REFERENCES:
patent: 1356125 (1920-10-01), Chattstrom
patent: 3968846 (1976-07-01), Brenner
patent: 4364441 (1982-12-01), Geeting
patent: 4650012 (1987-03-01), Bollinger et al.
Berkel & Company Contractors, Inc.
Britts Ramon S.
Tsay Frank S.
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