Geometrical instruments – Gauge – Tooth testing
Patent
1989-04-20
1991-04-02
Will, Thomas B.
Geometrical instruments
Gauge
Tooth testing
3350113, 73162, 74545, 74625, G01M 1302
Patent
active
050037021
ABSTRACT:
A master gear turning assembly for a gear checking system of the slide type has a master gear on an arbor engaged wtih a workpiece gear and formed with off-center drive holes, a mounting cap with drive pins engaged in the off-center drive holes, and a device for turning the mounting cap to drive the master gear through the drive pins so that manual forces causing erroneous readings of the center distance between the two gears are avoided. The assembly can be an original or retrofit unit. One version has two drive pins with O-rings fitted in the holes of the master gear, a forward handle, and a transparent guard over the engagement area of the gears for operator safety. Another version has the forward mounting cap keyed to a hex bar extending through the arbor to a gear engaged with a right-angle handle drive or a motor drive unit.
REFERENCES:
patent: 1263472 (1918-04-01), Saurer
patent: 1282348 (1918-10-01), Wirrer
patent: 1424494 (1873-09-01), Miles
patent: 1445631 (1923-02-01), Lotz
patent: 2014668 (1935-09-01), Rinderknecht
patent: 2318970 (1943-05-01), Richards
patent: 2585528 (1952-02-01), Aeppli
patent: 3031765 (1962-05-01), Muller
patent: 3126166 (1964-03-01), Weinberg
patent: 3358374 (1967-12-01), Jones, Jr.
patent: 3774313 (1973-11-01), Occhialin et al.
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