Gauging of thread diameters

Details Gauging of thread diameters Gauging of thread diameters

1981-11-05

1983-11-29

Stearns, Richard R.

Geometrical instruments

Gauge

Screw thread

G01B 348, G01B 512

Patent

active

044174020

ABSTRACT:
The diameter of a thread is measured by screwing two gauge elements into simultaneous engagement with the thread to be measured, then turning the two gauge elements relative to one another to a setting in which their similar threads bear in opposite axial directions against the thread to be measured and confine that thread in a manner holding it against axial movement relative to the gauge elements, after which the diameter of the measured thread is determined by noting the relative rotary position of the two gauge elements, as indicated by relative positions of coacting markings on those parts.

REFERENCES:
patent: 1714780 (1929-05-01), Hartness
patent: 1829797 (1931-11-01), Hartness
patent: 1875872 (1932-09-01), Hoke
patent: 1877307 (1932-09-01), Hartness
patent: 1905705 (1933-04-01), Hartness
patent: 2883760 (1959-04-01), Eriksson
Southern Gage Co., "Tri-Roll Thread Comparators", Jun. 1979, pp. 1-12.
MTG, "Internal Gaging", May 1981, pp. 1-12.

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