Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1978-05-17
1980-05-20
Whitehead, Harold D.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
51101LG, 51106LG, 5116571, B24B 914
Patent
active
042032598
ABSTRACT:
An apparatus for simultaneously grinding a peripheral shape and edge surface upon a pair of ophthalmic lenses including an abrading wheel and first and second floating heads for rotatably supporting a pair of ophthalmic lenses on either side of the abrading wheel. The lenses are biased toward the wheel and are incrementally rotated about mutually parallel axes which lie parallel with a central longitudinal axis of the abrading wheel. An electronic control system is operably connected to each of the lenses and serves to control incremental rotation of each of the lenses as well as lateral engagement of the lenses with the central abrading wheel.
REFERENCES:
patent: 1171027 (1916-02-01), Cossman
patent: 1502990 (1924-07-01), Kiefer
patent: 3894361 (1975-07-01), Georgiadis et al.
patent: 3913274 (1975-10-01), Raiford et al.
patent: 4005552 (1977-02-01), Hoglund et al.
patent: 4027245 (1977-05-01), Bourrat et al.
Adolphson K. Bradford
Byrne John J.
Coburn Optical Industries Inc.
Dyson Edward E.
Whitehead Harold D.
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