Boring device

Details Boring device Boring device

1976-05-10

1978-07-18

Purser, Ernest R.

Boring or penetrating the earth

Bit or bit element

Adjustable cutter element

175384, 408162, E21B 900

Patent

active

041009835

ABSTRACT:
A boring device adapted for deep well drilling wherein a cutting plate is fixed in operative position in a recess of a boring head by means of a clamping bolt. The cutting plate is reversible and its position in the boring head is adapted to be adjusted in a substantially radial direction. The cutting plate has a serrated surface and the bottom of the recess has a matingly serrated surface which when contacting each other enhance the clamping action of the clamping bolt.

REFERENCES:
patent: 1226393 (1917-05-01), Skeen
patent: 1366733 (1921-01-01), Jung
patent: 1468774 (1923-09-01), Caldwell
patent: 3203493 (1965-08-01), Bergstrom
patent: 3989115 (1976-11-01), Ambrose

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