Adjustable printer head drive

Details Adjustable printer head drive Adjustable printer head drive

1982-04-29

1984-12-11

Staab, Lawrence J.

Typewriting machines

Carriage or carriage-moving or movement-regulating mechanism

Carriage-feed mechanism

400124, 400335, 474 49, 474 54, B41J 2528

Patent

active

044875185

ABSTRACT:
An adjustable diameter pulley, particularly suitable for the belt tension adjustment in belt transmission system such as those used in serial printers, utilizing a central core having a tapered portion, a threaded cylindrical portion and also a plastic ring having external cylindrical surface and a central tapered opening. The opening receives the conical portion of the core and is provided with deep slits which allow its expansion. A second ring, screwed on the cylindrical portion of the core, causes the expansion of the plastic ring to vary.

REFERENCES:
patent: 211937 (1879-02-01), Serighelli
patent: 389480 (1888-09-01), Massett
patent: 1472565 (1923-10-01), Manning
patent: 3424019 (1969-01-01), Wolfram
patent: 4208141 (1980-06-01), Jagger
patent: 4304502 (1981-12-01), Stratienko
patent: 4395151 (1983-06-01), Krenz

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