Geometrical instruments – Area integrators – Electrical
Patent
1978-03-28
1979-09-25
Stearns, Richard R.
Geometrical instruments
Area integrators
Electrical
33163, G01B 502, G01B 330
Patent
active
041685741
ABSTRACT:
An upper wedge having a T-groove therein is slideably connected to a lower wedge having a tee thereon forming opposing, adjacent surfaces. A slide support is integrally attached to the narrow end of the lower wedge. The support has a longitudinal aperture therethrough with an axis parallel to the opposing, adjacent surfaces. The upper wedge has a threaded opening having an axis parallel to the opposing surfaces. The aperture in the slide support is in registry with the threaded opening and retains a screw having a threaded end which engages the threaded opening of the upper wedge. The screw has a radial groove therein. The slide support has a first opening perpendicular and tangential to the aperture and a pin disposed in the first opening to engage the groove and retain the screw within the aperture. A second threaded opening perpendicularly intersecting the aperture and the first opening is also located in the support. A ball is disposed in the second threaded opening engaging the groove of the screw and a threaded locking screw retains the ball in locking engagement with the groove. The outer end of the adjusting screw is knurled and the sides of the wedges have scales thereon which are in registry.
REFERENCES:
patent: 151824 (1874-06-01), Barsantee
patent: 1339984 (1920-05-01), Runge
patent: 2353886 (1944-07-01), Findley et al.
patent: 2557702 (1951-06-01), Soukup et al.
patent: 2841876 (1958-07-01), Pittenger
patent: 3247598 (1966-04-01), Wilkes
patent: 3638323 (1972-02-01), Groe
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