B - Operations – Transporting – 24 – B
Patent
B - Operations, Transporting
24
B
51/17
B24B 13/00 (2006.01)
Patent
CA 1235297
Abstract A variable speed electric motor (74) drives a crank (78) which in turn pushes a push arm (82) against a pivotally mounted drive lever (58), for swinging it through a drive stroke, and then retracting the push arm (82) to allow a spring (72) to return the drive lever (58) through a return stroke. The spring (72) moves the drive lever (58) towards a guide member (92) which is adjustable in position for changing the amplitude of the stroke. The moving end of the drive lever (58) is attached to a drive bar (48) which in turn is attached to and drives a plurality of pin assemblies (44) which serve to locate and drive oscillating members (114) which contact one surface of a lens (116). The opposite surface of the lens (116) is in contact with rotating tool (112) supported on a variable speed spindle (10). The lens (116) is attached to one of the tools (112, 114) and a polishing compound is located between the lens (116) and a surface of the other tool. The drive pins (44) are carried by support arms (46) which are clamped (126) onto the reciprocating drive rod (48).
463346
Gowling Lafleur Henderson Llp
Larsen Erik A.
LandOfFree
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