Typewriting machines – Means auxiliary to typewriting function – Means for muffling typewriter noise
Patent
1981-12-11
1984-02-14
Wright, Jr., Ernest T.
Typewriting machines
Means auxiliary to typewriting function
Means for muffling typewriter noise
400208, 181201, B41J 2902
Patent
active
044313241
ABSTRACT:
In a ribbon cartridge for an office writing machine, which cartridge includes a housing having a base plate, a supply reel and a take-up reel mounted in the housing, a carbon ribbon wound around the reels and mounted to be conducted from the supply reel to the take-up reel while traveling over a guidance path having a first portion located outside of the housing and a second portion located inside the housing and extending between the first portion and the take-up reel, the housing being provided with an entrance opening located between the first and second portions of the guidance path for the passage of the ribbon into the housing, and the cartridge further including guide elements located for guiding the ribbon along the second path portion and a transport roller located along the second path portion for transporting the ribbon to the take up reel, the base plate is provided with recesses for damping noise generated during operation of the machine, and the cartridge is constructed for preventing particles which are detached from the ribbon over the second portion of the guidance path from falling out of the housing.
REFERENCES:
patent: 888438 (1908-05-01), Hess et al.
patent: 1419293 (1922-06-01), Myers
patent: 1972563 (1934-09-01), Irvin
patent: 3656576 (1972-04-01), Gubela
patent: 3960259 (1976-06-01), Guerrini et al.
patent: 4035535 (1977-07-01), Taylor
patent: 4235664 (1980-11-01), Menke
IBM Technical Disclosure Bulletin, "Noise Reduction Feature for Typewriters", Irving, vol. 18, No. 7, Dec. 1975, p. 2217.
IBM Technical Disclosure Bulletin, "Acoustical Barrier for Typewriters", Boone et al., vol. 20, No. 4, Sep. 1977, p. 1515.
IBM Technical Disclosure Bulletin, "Ribbon Cartridge Exit Impedance" Dowd, vol. 20, No. 118, Apr. 1977, pp. 4739-4740.
Keiter Alfred
Tappehorn Bernd
Olympia Werke AG
Wright, Jr. Ernest T.
LandOfFree
Sound damping ribbon cartridge for a typewriter or similar offic does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sound damping ribbon cartridge for a typewriter or similar offic, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sound damping ribbon cartridge for a typewriter or similar offic will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2372390