Geometrical instruments – Scriber
Patent
1986-01-31
1988-04-19
Martin, Jr., William D.
Geometrical instruments
Scriber
33 1M, 33438, B43L 1300
Patent
active
047380292
ABSTRACT:
A numerically or manually controlled moving carriage drafting machine with digital X-Y position and angle indication, input keyboard, ruler holder and lowering mechanism for tubular pens or similar writing instruments at the drawing head is particularly characterized in that the drawing head contains an X.sub.1 -Y.sub.1 writer with high dynamic range and small working range only for lettering and small sized symbols whose path instructions are superimposed by the same computer alternately also to the X-Y drives of the moving carriages, and that all movements of the drawing head originate as selected from a movement sensor which is guided manually by the hand of an operator as well as from a path computer, with all operating and path driving programs at least capable of being recalled from the keyboard at the drawing head.
REFERENCES:
patent: 4237617 (1980-12-01), Goussios
patent: 4241512 (1980-12-01), Chikanobu et al.
patent: 4268969 (1981-05-01), Koenuma
patent: 4370811 (1983-02-01), Triggs et al.
patent: 4386470 (1983-06-01), Perry
patent: 4430797 (1984-02-01), Eder
patent: 4455751 (1984-06-01), Held
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