Geometrical instruments – Scriber – Curved line
Patent
1986-03-13
1987-05-05
Little, Willis
Geometrical instruments
Scriber
Curved line
33 2701, B43L 1104
Patent
active
046620737
ABSTRACT:
An infinitely variable drawing instrument for producing unlimited varieties of fanciful designs. The designs produced by the drawing instrument are of the repeated individual line type yet indexed around the circumference of a circle. After the various apparatus variables are set by the operator and a piece of paper is located on a drawing platen, the drawing tool or pen nib, located at the end of a drawing bar connected to the driving wheel is placed on the paper and the operator merely rotates the driving wheel by grasping a handle. The simple manual rotation of the driving wheel causes the drawing platen to rotate and, in addition, causes the drawing tool or pen nib to move and thereby draw the fanciful design on the paper. Thus, repeated lines, indexed on a circle, produce unlimited drawing designs. A guiding template and/or an intermediate bar can also be connected between the driving wheel and the drawing bar which provide additional variables for adjustment for making additional drawing designs. The ratio of the number of turns of the driving wheel to the number of turns of the drawing platen can be adjusted to provide additional adjustable variables.
REFERENCES:
patent: 1071681 (1913-09-01), Allen
patent: 3820245 (1974-06-01), Yozzo
patent: 4574484 (1986-03-01), Borda
"Mechanical Artist", Oct., 1942, p. 117; by Walter E. Burton.
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