Stone working – Tools – Surface traversing
Patent
1981-02-27
1984-02-07
Whitehead, Harold D.
Stone working
Tools
Surface traversing
407119, 369144, B28D 504
Patent
active
044296789
ABSTRACT:
A cutting stylus adapted for mechanically cutting a deep groove, which may be used in lapping the keel on a playback stylus, is provided. The stylus includes a tapering body, a constricted terminal region and shoulders joining the tapering body and the constricted terminal region. The shape of the constricted terminal region is complementary to the shape of the keel tip on the playback stylus. The terminating portion of the stylus tip has a substantially flat cutting face, a pair of side surfaces extending from the side cutting edges of the cutting face which taper at a slight angle to provide clearance to the side cutting edges, and a bottom surface extending from the bottom cutting edge of the cutting face at an angle which provides relief to the bottom cutting edge.
REFERENCES:
patent: Re29113 (1977-01-01), Halter
patent: 1974215 (1934-09-01), Kilmer
patent: 2860623 (1958-11-01), Muench
patent: 3025847 (1962-03-01), Miller
patent: 3842194 (1974-10-01), Clemens
patent: 4104832 (1978-08-01), Keizer
patent: 4162510 (1979-07-01), Keizer
patent: 4285324 (1981-08-01), Komanduri
John Gunter
Rainey James H.
Valembois Pierre V.
RCA Corporation
Roehling J. E.
Tripoli J. S.
Whitacre E. M.
Whitehead Harold D.
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