Pen changing apparatus for plotter

Details Pen changing apparatus for plotter Pen changing apparatus for plotter

1985-05-24

1986-03-25

Little, Willis

Geometrical instruments

Scriber

33 44, 33 323, 346139R, B43L 1300, G01D 1516

Patent

active

045774099

ABSTRACT:
A pen changing apparatus for a plotter is disclosed. A plurality of pens are mounted on a carriage in alignment with the axial direction of a shaft which is provided on the carriage as the sliding axis thereof. A guide shaft is fixed onto the carriage in the same direction as the shaft. A sliding lever for pressing any of the plurality of pens is provided on the guide shaft such as to be movable in the axial direction of the guide shaft and rotatable around the guide shaft. A solenoid rotates the sliding lever so as to press down a desired pen at the position where the sliding lever is located in resistance to a pen lifting spring or restore the pen to its original position by the urging force of the pen lifting spring. Leaf springs position the sliding lever over the desired pen and retain the same when the sliding lever is moved and stoppers are provided approximately at both end portions of the travelling range of the carriage such as to stop the sliding lever alone at the position over the desired pen at the time of moving the carriage.

REFERENCES:
patent: 2557447 (1951-06-01), Masi
patent: 3593426 (1971-07-01), Domagalski
patent: 3628252 (1971-12-01), Muller
patent: 3683411 (1972-08-01), Ikeda
patent: 4157552 (1979-06-01), Nakajima

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