Apparatus for producing perspective drawings

Details Apparatus for producing perspective drawings Apparatus for producing perspective drawings

1983-01-21

1984-06-12

Martin, Jr., William D.

Geometrical instruments

Straightedge type

Base attached

33 1K, B43L 1314

Patent

active

044533187

ABSTRACT:
An apparatus is provided for use in conjunction with a tiltable rectangular drafting table for producing perspective drawings within a working area centered on the table. The apparatus comprises a left side, right side and bottom holding means and an elongated drawing guide associated with each holding means. The extremities of the drawing guides which are located within the working area are pivotably joined at a juncture. Manual movement of the juncture causes simultaneous pivotal movement of the drawing guides about vanishing points in a manner to enable straight lines to be drawn for a perspective drawing.

REFERENCES:
patent: 1986625 (1935-01-01), Lorenzi
patent: 3258843 (1966-07-01), Nosser
patent: 3389470 (1968-06-01), Johnson
patent: 4075762 (1978-02-01), Ohtake

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