Technical drawing apparatus

Details Technical drawing apparatus Technical drawing apparatus

1990-03-13

1992-02-11

Haroian, Harry N.

Geometrical instruments

Miscellaneous

Light direction

33403, 33430, B43L 500

Patent

active

050865650

ABSTRACT:
Drawing apparatus for the preparation of technical drawings has a support for a drawing board on which paper may be attached. The support defines a frame surrounding the board which frame includes an upstanding lip for engagement by drawing instruments. Front, rear and side walls depend downwardly from the frame, and flare outwardly somewhat so that a series of apparatuses may be stacked for storage, with one nested partially within another. The lower edge of each side wall defines shoulders arranged so that the drawing surface may be disposed at one of three different angles to the horizontal when placed on a support surface, with that surface engaging different parts of the side walls. The frame may include an open-topped recess for holding drawing instruments, which recess will be closed by the next apparatus up, in a stack of such apparatus.

REFERENCES:
patent: 858274 (1907-06-01), Forsyth

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