Machine for edging and bevelling ophthalmic lenses

Details Machine for edging and bevelling ophthalmic lenses Machine for edging and bevelling ophthalmic lenses

1978-07-19

1980-04-01

Smith, Gary L.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

B24B 914

Patent

active

041954459

ABSTRACT:
Machine for edging and bevelling ophthalmic lenses comprising guide means r forming a small bevel on the edge of lenses having a relatively thick edge, said guide means comprising a guide member connected to the frame of the machine by means of a pair of links forming a parallel-link motion device, a pair of springs constantly urging said links to a stable position in which their longitudinal axes form a predetermined angle with the axis of the rotating spindle which supports the lens to be bevelled, a bearing member supported by a movable carrier for said spindle and urged for engagement with said guide member, one of the guide member and bearing member comprising a bar extending at right angles to the spindle axis and provided with coupling means capable of preventing any relative movement between the guide member and the bearing member in a direction at right angles to the spindle axis. The adjustments of the machine for forming the small bevel art thus greatly simplified.

REFERENCES:
patent: 2293291 (1942-08-01), Gaspari
patent: 3063340 (1962-11-01), Dillon
patent: 3513598 (1970-05-01), Asselin et al.
patent: 3769755 (1973-11-01), Kania et al.
patent: 4003165 (1977-01-01), Saun

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