B - Operations – Transporting – 24 – B
Patent
B - Operations, Transporting
24
B
51/18
B24B 13/01 (2006.01) B24B 45/00 (2006.01)
Patent
CA 1307400
ABSTRACT OF THE DISCLOSURE A lens grinding tool having a cylindrical shank and a radial shoulder is secured to the shaft of a motor for rapidly rotating the tool, by means of a drawbar extending the length of the shaft and threaded into an axial threaded bore in the cylindrical shank. The location of the tool is precisely fixed by means of ring-shaped shims adapted for placement about the cylindrical shank of the tool between the shoulder and either a mating surface on the shaft or intermediate means for securing the tool to the shaft.
553394
Barnes-Hind Inc.
Coburn Optical Industries Inc.
Gray Roy
Mcfadden Fincham
Pilkington Visioncare Inc.
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