Method and apparatus for making a pattern for a lens opening in

Details Method and apparatus for making a pattern for a lens opening in Method and apparatus for making a pattern for a lens opening in

1987-12-08

1987-12-08

Martin, Jr., William D.

Geometrical instruments

Gauge

Spectacle

33507, 33562, 408 3, 409 80, G02C 702

Patent

active

047110350

ABSTRACT:
A method and apparatus for making a pattern from a blank in accordance with a set of coordinates defining a plurality of data points and collectively characterizing the size and shape of a lens opening in an eyeglass frame is presented. A controller includes an instruction set to control the operation of a router coupled to a carraige arranged for rectilinear movement toward and away from a work station and relative to the rotation of a blank fixtured at the work station whereby a pattern is cut with the desired size and shape. The apparatus further includes a sensor and light source in the feeding and staging area of the apparatus to advance a blank to a fixturing spindle located at the work station and to determine the nasal side orientation of the blank at the work station.

REFERENCES:
patent: 2582048 (1952-01-01), Line
patent: 3730634 (1973-05-01), Gerber et al.
patent: 3783741 (1974-01-01), Schadebrodt et al.
patent: 4328726 (1982-05-01), Pearl
patent: 4512380 (1985-04-01), Schmidt
patent: 4573121 (1986-02-01), Saigo et al.

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