Tape tensioning mechanism

Details Tape tensioning mechanism Tape tensioning mechanism

1979-06-15

1981-06-16

Wright, Jr., Ernest T.

Typewriting machines

Including interposed inking device for record-medium

Ribbon-feeding mechanism

400208, 400242, 400248, 400696, B41J 3314

Patent

active

042734541

ABSTRACT:
An improved ribbon tensioning means is disclosed in which a spring-loaded gear rack is in engagement with a gear wheel formed on a spool of tape to be unwound. The gear rack is provided with sufficient travel in the direction opposite to that of the spring force that the teeth thereon can be disengaged from those on the gear wheel if the wheel is rotated a sufficient distance, thus constantly providing tension to a tape or ribbon wound on the spool.

REFERENCES:
patent: 2202958 (1940-06-01), McFarland
patent: 3022958 (1962-02-01), Bieber
patent: 3323743 (1967-06-01), Landgraf
patent: 3349887 (1967-10-01), Goff, Jr.
patent: 3409114 (1968-11-01), Okuda
patent: 3724633 (1973-04-01), Korb et al.
patent: 3788442 (1974-01-01), Lehnhardt et al.
patent: 3998314 (1976-12-01), Barouh et al.
Xerox Disclosure Journal, "Ribbon Advance Mechanism", Mikes, vol. 2, No. 4, Jul./Aug., 1977, p. 47.

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