Cam drive for matrix print heads and the like

Details Cam drive for matrix print heads and the like Cam drive for matrix print heads and the like

1976-05-17

1978-10-31

Pieprz, William

Typewriting machines

Carriage or carriage-moving or movement-regulating mechanism

Carriage-feed mechanism

400320, 400372, 400120, 400578, 74567, 101 9315, B41J 1950, B41J 1956, B41J 1920

Patent

active

041231821

ABSTRACT:
In a print head assembly for calculators and the like, the print head is reversibly driven in a print and return direction transversely of the direction of advancement of the recording medium by a drum segment having a cam drive in the form of an endless helical groove which extends along a cylindrical surface of revolution between opposite ends of a drive axle mounted in driving relation to the print head so that rotation of the drum will impart translational movement to the print head through a suitable drive member engaged by the helical groove at a preselected rate of speed both in the print and return direction.

REFERENCES:
patent: 3167166 (1965-01-01), Schiebeler
patent: 3429414 (1969-02-01), Bradbury
patent: 3670861 (1972-06-01), Zenner et al.
patent: 3708050 (1973-01-01), McCarthy, Jr.
patent: 3750792 (1973-08-01), Liles
patent: 3986594 (1976-10-01), Kondur, Jr.
patent: 3993181 (1976-11-01), Potma et al.
patent: 4024942 (1977-05-01), Kawaji

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