Geometrical instruments – Scriber
Patent
1976-08-24
1978-06-20
Haroian, Harry N.
Geometrical instruments
Scriber
33 32C, B43L 1300
Patent
active
040953440
ABSTRACT:
A scribe tool having a shank with a diamond head at one end and a transverse bar at the opposite end. The bar is oriented parallel to a pair of aligned scribe edges on the diamond head. The tool is to be removably carried by a tool holder which includes a tube disposed in an inclined position to a generally horizontal beam, the latter being secured at one end to a floating arm having a slot therethrough for permitting the tube to extend therethrough. The opposite end of the beam is adjustable by means of a screw carried by the arm. The tube has a plate mounted on the upper end thereof and the plate has uniformly spaced, radial arms provided with projections having surfaces engageable be the bar on the tool shank. The surfaces of the projections of diametrically opposed radial arms being coplanar and adapted to engage the bar when the shank of the tool extends through the tube of the tool holder, thereby orienting the scribe edges of the diamond head relative to the longitudinal axis of the floating arm and thereby the desired scribe direction.
REFERENCES:
patent: 1271224 (1918-07-01), Rintelman
patent: 2421926 (1947-06-01), Coronel
patent: 3108381 (1963-10-01), Kuebler
patent: 3680213 (1972-08-01), Reichert
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