Mechanical perspective drafting device

Details Mechanical perspective drafting device Mechanical perspective drafting device

1985-06-17

1987-06-16

Little, Willis

Geometrical instruments

Scriber

Perspective drawing

33 203, B43L 1300

Patent

active

046727493

ABSTRACT:
Mechanical perspective drafting device, characterized by a first drafting board which is fitted with a second drafting board with a fixed support which includes a universal joint through which a long member can slide and rotate freely, the long member being fitted with a drawing device ending with a point which can come in contact with the second drafting board, the line which is connecting the universal joint and the point is passing through an imaginary three dimensional figure and this causes the point to draw a perspective projection of the figure as it is seen from the position of the universal joint, the movement of the line through the figure is assisted by a tracing guide which guides the long member.

REFERENCES:
patent: 398865 (1889-03-01), Wade
patent: 2746152 (1956-05-01), Deakin
patent: 2836893 (1958-06-01), Barnett
patent: 3175295 (1965-03-01), Selley
patent: 3657820 (1972-04-01), Vermeulen

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