Geometrical instruments – Area integrators – Electrical
Patent
1977-11-14
1979-02-06
Stearns, Richard R.
Geometrical instruments
Area integrators
Electrical
G01B 520
Patent
active
041376420
ABSTRACT:
The invention relates to a tool for control measurement of the correct form of the teeth of helical gear wheels. A rack with the same pitch as the wheel to be control-measured rolls on top of the wheel in engagement with its teeth. An indicator whose height is adjustable has a measuring arm passing through a hole in the rack, so that its point slides on the side of a tooth on the gear wheel. The relative height of the indicator in relation to the rack is recorded.
REFERENCES:
patent: 2394623 (1946-02-01), Martin
patent: 2761560 (1956-09-01), Pomernacki
Stal-Laval Turbin AB
Stearns Richard R.
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