Graphic reproduction apparatus

Details Graphic reproduction apparatus Graphic reproduction apparatus

1975-04-21

1977-01-11

Aegerter, Richard E.

Geometrical instruments

Miscellaneous

Light direction

33 86, 28 15, 35 26, B43L 1300

Patent

active

040019411

ABSTRACT:
A set of four channel-like clips positioned on opposite edges of a canvas have fasteners to which elastic threads are secured to form a grid over the canvas. Some of the fasteners are spaced one distance apart from each other to form a first grid portion of a small scale and others are spaced apart a distance which is a multiple of the one distance to form a second grid portion of a larger scale. The clips are numbered and lettered. A second identical set of four clips positioned on opposite edges of a picture that is to be painted or drawn on the canvas have strings similarly arranged. The clips may be slid along the edges to locate the grid portions of the desired sizes at desired portions of the picture and the canvas, and the elastic cords over the canvas may be held to one side or temporarily removed during the painting to provide space while only temporarily interrupting the grid patterns.

REFERENCES:
patent: 241801 (1881-05-01), Hagan
patent: 353919 (1886-12-01), Charman
patent: 574605 (1897-01-01), Hailes
patent: 1017390 (1912-02-01), Dittrich
patent: 1282382 (1918-10-01), Cross
patent: 1622229 (1927-03-01), Ormiston
patent: 1667330 (1928-04-01), Odlin
patent: 2263101 (1941-11-01), Perry
patent: 3086296 (1963-04-01), Bergstrom
patent: 3209336 (1965-09-01), Erikson et al.
patent: 3660903 (1972-05-01), Caperton
patent: 3939564 (1976-02-01), Slawinski

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