Geometrical instruments – Scriber – Parallel line
Patent
1985-01-29
1987-04-14
Haroian, Harry N.
Geometrical instruments
Scriber
Parallel line
33 42, B43L 1302
Patent
active
046567445
ABSTRACT:
A device for marking wall panels or the like with irregular lines, which conform to irregular surfaces such as stone or brick walls, comprises a bar and a slide adjustable thereon to selected distances from the wall to be traced. The slide including a tube mounted on the slide at right angles thereto for receiving a pencil or stylus, the tube has a central hole adjacent the slide and a conical sharpened pencil will fit both holes and lock the pencil in position for tracing a line. A swingable handle is pivoted at the other end of the bar from the tracing point, and swings in a plane spaced from that of the bar sufficiently to allow the operator to grip the handle without interference with the bar. The user grips the handle and the pencil and holder, and, while keeping the bar horizontal holds the point against the irregular wall and moves it along the wall to trace the irregular line on a wall panel or the like. The wall panel may then be cut to the line which will fit the wall closely. A spirit level is provided on the bar to enable the operator to check the level position of the bar.
REFERENCES:
patent: 1309930 (1919-07-01), Akin
patent: 1416357 (1922-05-01), Knuusi
patent: 1662165 (1928-03-01), Punt
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patent: 2287601 (1942-06-01), Callaghan
patent: 2557699 (1951-06-01), Silver
patent: 2594193 (1952-04-01), Mendes
patent: 2968098 (1961-01-01), Collin
patent: 4318226 (1982-03-01), Engelhart
patent: 4388761 (1983-06-01), Henderson
Edwards Wm. Griffith
Haroian Harry N.
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