Machine for edging and bevelling ophthalmic lenses
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United States of America Patent
Stats
-
Apr 1, 1980
Grant Date -
N/A
app pub date -
Jul 19, 1978
filing date -
Jul 20, 1977
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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