G - Physics – 02 – B
Patent
G - Physics
02
B
74/118, 88/16, 7
G02B 21/26 (2006.01) G02B 21/24 (2006.01)
Patent
CA 1099130
AO-3199 BWP/sam 4/10/18 INSTRUMENT FOCUS STOP ABSTRACT OF THE DISCLOSURE A stop for an instrument focusing shaft wherewith the extent of its rotational excursion in one direction may be readily adjusted and repeated. A gear fixed to the focusing shaft and in mesh with additional gearing is selectively stopped by another gear caused to mesh across two gears of the system. The stop gear may be carried out of mesh by reverse rotation of the focusing shaft.
323378
American Optical Corporation
Macrae & Co.
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