Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Tooth mounted on helical head portion or head with helical...
Patent
1986-02-20
1988-11-15
Suchfield, George A.
Mining or in situ disintegration of hard material
Cutter tooth or tooth head
Tooth mounted on helical head portion or head with helical...
175371, 175373, 384563, 384583, E21B 1012, E21C 2516, F16C 3507, F16C 4304
Patent
active
047844388
ABSTRACT:
Twin combined radial-and-thrust antifriction bearings in a mounting for a rotatable member, such as a tunneling cutterhead or a tunneling cutter, can be tightened or preloaded by pressing spaced bearing races against a spacer ring therebetween to contract the spacer ring. Alternatively the rotatable member may be a cutter composed of a rim mounted on a hub having an external circumferential groove extending partially under the base of such rim by a retaining ring received in such groove and having portions thereof staked beneath the rim to anchor the retaining ring in place. The cutting rim may be of generally equilateral triangle cross section having opposite base angles clipped to provide narrow parallel walls and the apex being truncated to provide a crest included angle of 80 degrees to 100 degrees. The slant slides of the cutting rim are concave to enable the apex of the rim to be sharpened more effectively.
REFERENCES:
patent: Re31511 (1984-01-01), Spencer
patent: 892180 (1908-06-01), Patten et al.
patent: 2160420 (1939-05-01), Scribner
patent: 2407532 (1946-09-01), Boden
patent: 2606799 (1952-08-01), Weckstein
patent: 3139148 (1964-06-01), Robbins
patent: 3216513 (1965-11-01), Robbins et al.
patent: 3679009 (1972-07-01), Goodfellow
patent: 3791705 (1974-02-01), Schimel
patent: 3884312 (1975-05-01), Williams
patent: 4004645 (1977-01-01), Rees et al.
patent: 4092054 (1978-05-01), Dye
patent: 4172621 (1979-10-01), Yoshida
patent: 4454923 (1984-06-01), Tibussek
patent: 4533812 (1985-08-01), Lorenz
Robbins Machine, Inc. document, AM1723 and AM1724 Cutter Disc, Jun. 1982.
Bagnell David J.
Beach Robert W.
Brown Ward
Suchfield George A.
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