Dual pitch carriage drive mechanism

Details Dual pitch carriage drive mechanism Dual pitch carriage drive mechanism

1979-08-27

1981-05-05

Wright, Jr., Ernest T.

Typewriting machines

Carriage or carriage-moving or movement-regulating mechanism

Carriage-feed mechanism

4003072, 400305, 400328, 400335, 74436, B41J 1900

Patent

active

042655552

ABSTRACT:
Two carriage drive systems are arranged to be selectively coupled to a uniform stepping mechanism responsive to spacing signals whereby a carriage can be indexed across a writing line at 10 or 12 pitch increments.

REFERENCES:
patent: 442404 (1890-12-01), Steiger
patent: 2307886 (1943-01-01), Hansson
patent: 2465657 (1949-03-01), Norton
patent: 3260343 (1966-07-01), McCormick
patent: 3540565 (1970-11-01), Hanft et al.
patent: 3926061 (1975-12-01), Paulson
patent: 3985220 (1976-10-01), Rix et al.
patent: 4005772 (1977-02-01), Kieffer et al.
patent: 4067430 (1978-01-01), Wienhold
DE-GM (West German Utility Model) 77 00 648, Burkhardt, May 26, 1977, 5 pages.
IBM Technical Disclosure Bulletin, "Noise Reduction of Leadscrew Drive", Brown, vol. 21 No. 4, Sep. 1979, p. 1539.

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