Bi-directional pen changer

Details Bi-directional pen changer Bi-directional pen changer

1982-01-13

1983-11-22

Hartary, Joseph W.

Recorders

Markers and/or driving means therefor

Stylus feature

346 29, 400171, G01D 1500

Patent

active

044172583

ABSTRACT:
A bi-directional pen changer for use in an X-Y plotter is disclosed which requires only a single axis of motion for pen snatch, pen re-insertion, and plotting. The device is made up of two pen stables, one on each side of a pen carriage, for holding pens when not in use, and a pen holder located between the two pen stables which holds a pen during plotting. The pen holder is mounted on the pen carriage and is a symmetric device configured to snatch and re-insert a pen from either side. The snatch and re-insertion of pens by the pen holder is accomplished by co-acting clamp arms on the pen holder and on each pen stable. The pen holder clamp arms are configured such that the pen tip is always at the same location relative to the clamp arms when the pen holder is holding a pen, regardless of the side from which the pen is snatched.

REFERENCES:
patent: 4135245 (1979-01-01), Kemplin
patent: 4281938 (1981-08-01), Phillips
patent: 4288798 (1981-09-01), Hollmayer

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