Geometrical instruments – Scriber – Pantographic
Patent
1989-02-10
1990-08-07
Will, Thomas B.
Geometrical instruments
Scriber
Pantographic
33 2302, B43L 1310
Patent
active
049456431
ABSTRACT:
This very simple apparatus enlarges in one direction, and copies without enlargement in an orthogonal direction. A tracing arm has a tracing stylus at one point, a drawing-implement holder at another point, and a longitudinal track along another part of the arm. The track engages a pivot that in effect resolves all tracing motions into radial and rotary components. Radial components are traced without change of size; but rotary components are enlarged by a factor that depends on the ratio of radii from the pivot to the stylus and implement holder respectively. A photo or other picture to be traced is held in a retainer on a platform; and drawing paper is held on an easel. The retainer and easel are sized in relation to their distances from the tracing-arm pivot to limit the overall angular range of operation to significantly less than sixty degrees; this limitation makes the rotary components very nearly straight-line components, so that the enlargement direction appears roughly to be one straight-line direction that is perpendicular to the nonenlargement direction. The platform is rotatably mounted and has detents so that a user can place a photo in any of a multiplicity of angular orientations relative to the enlargement direction.
REFERENCES:
patent: D141675 (1945-06-01), Bolter
patent: 1320321 (1919-10-01), Crowley, Jr.
patent: 1997287 (1935-04-01), Adler
patent: 2021931 (1935-11-01), Bockius
patent: 2823456 (1958-02-01), Valois
patent: 2885786 (1959-05-01), Badgett
patent: 2886891 (1959-05-01), Keller
patent: 3101548 (1963-08-01), Morin
patent: 3359641 (1967-12-01), Gregston
patent: 3559290 (1971-02-01), Glass et al.
LandOfFree
Amusement apparatus for drawing a distorted caricature by tracin does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Amusement apparatus for drawing a distorted caricature by tracin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Amusement apparatus for drawing a distorted caricature by tracin will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-950615