Geometrical instruments – Scriber – Parallel line
Patent
1977-10-13
1979-07-24
Phillips, Charles E.
Geometrical instruments
Scriber
Parallel line
B43L 1302
Patent
active
041618211
ABSTRACT:
A scribing tool for marking wall panels for cutting them to fit the contour of a wall corner. The tool body has either a flat face or a rotating roller for engaging the corner wall surface that is perpendicular to the wall being paneled. The tool body carries a scribing element or pencil. In one species the scribing element is axially adjustable in a selected one of intersecting V-grooves in the top surface of the tool body, and a flat face is perpendicularly movable relatively to the tool body by being on the vertical face of an L-shaped strap whose medially slotted lower reach underlies the tool body. In a second species the scribing tool is axially adjustable in a V-groove in the upper surface of a disc rotatably mounted on the top surface of the tool body. In both flat-faced species, a rod passing vertically through the tool body clamps the scribing element and the adjustable body part in their adjusted positions by means of a nut on its threaded lower end. In a third species a roller is mounted on an axle pin fixed to a handle at an angle of 45 degrees. The axle pin terminates in a conical scriber point and is spring-retractable into the roller across the plane of its wall-engaging flat face. When the handle is held horizontally its center line passes close to the intersection line of the corner wall surfaces. A pair of sheet-metal gages having panel-gripping pockets of a depth equal to the amount of a preselected panel overlap, and also equal to the scriber-tool setting, are desirably employed.
REFERENCES:
patent: 647070 (1900-04-01), Black
patent: 810246 (1906-01-01), Anderson
patent: 1678620 (1928-07-01), Baker
patent: 2314327 (1943-03-01), Drake
patent: 2514003 (1950-07-01), Martin
patent: 2782506 (1957-02-01), Igram
patent: 2958133 (1960-11-01), Seitz
patent: 3516167 (1970-06-01), McCain
Phillips Charles E.
Staubly Ralph F.
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