Geometrical instruments – Scriber – Curved line
Patent
1995-01-17
1996-09-17
Will, Thomas B.
Geometrical instruments
Scriber
Curved line
33 27032, B43L 11055, B43L 904
Patent
active
055556310
ABSTRACT:
An ellipse scribe for writing or cutting an ellipse onto or into a workpiece. Two perpendicular tracks each include a slider block which is capable of reciprocating within the tracks. The slider blocks are rotatably affixed at different points along the length of a scribe beam with a cursor mounted at one end of the scribe beam. The cursor scribes out an ellipse as the slider blocks reciprocate through a full cycle of motion. The size of the ellipse may be changed by disengaging the slider blocks from the scribe beam and translating the slider blocks within an adjustment track on the scribe beam to different points on the scribe beam. The scribe beam includes a removable scale whereby the locations of the slider blocks along the scribe beam may be determined, allowing the size of the ellipse to be accurately set.
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patent: 5414938 (1995-05-01), Meek
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