B - Operations – Transporting – 24 – B
Patent
B - Operations, Transporting
24
B
51/17
B24B 13/06 (2006.01) B24B 17/02 (2006.01)
Patent
CA 1264556
ABSTRACT OF THE DISCLOSURE: A lens and pattern holder for use with a grinding tool comprising a rotary grinding ring mounted in coaxial relationship with respect to a guiding ring of the same diameter. The holder comprises a solid body having a pair of opposite surfaces spaced apart so that the peripheries thereof respectively face the grinding ring and the guiding ring of the tool. A pair of pins projects upwardly from one of the opposite surfaces of the body for detachably connect- ing thereto a pattern having a peripherical edge extending away from the periphery of the one surface. Means consist- ing of another pair of pins or of a sticking pad, are pro- vided on the other opposite surface of the body for detach- ably mounting thereon another pattern or a lens. In the latter case, visual means are also provided on the holder surface for properly positioning and a ligning the lens with respect to the pattern connected to the opposite surface of the body. In use, a finishing lens mounted on the other surface of the body can be used as a guide for shaping and finishing the peripherical edge of a blank pattern connected to the one surface of the body, such a shaping and finishing being obtained by pressing and rotating the finished lens and blank pattern against the guiding and grinding rings respectively. Alternatively, a finished pattern mounted on the one surface of the body can be used as a guide for shaping and finishing the peripherical edge of a lens or of a blank pattern, such a finishing being obtained by pressing and rotating the finishing pattern and the lens or blank pattern to be finished against the guiding ring and the grinding ring, respectively.
481082
Robic Robic & Associes/associates
Zoueki Georges
LandOfFree
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