Browse Prior Art Database

Cartridge Cover for a Typewriter

IP.com Disclosure Number: IPCOM000052572D
Original Publication Date: 1981-Jun-01
Included in the Prior Art Database: 2005-Feb-11
Document File: 2 page(s) / 47K

Publishing Venue

IBM

Related People

Wang, JP: AUTHOR

Abstract

In typewriters having cartridges which oscillate to place the ribbon between the typing element and the platen and achieve a correction mode by elevating the cartridge still higher to place a correction ribbon intermediate the typing element and the platen, the constant fluttering of the cartridge during typing can be disconcerting to the typist. Moreover, the opening in the typewriter in which the cartridge is placed allows noise to readily escape.

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Cartridge Cover for a Typewriter

In typewriters having cartridges which oscillate to place the ribbon between the typing element and the platen and achieve a correction mode by elevating the cartridge still higher to place a correction ribbon intermediate the typing element and the platen, the constant fluttering of the cartridge during typing can be disconcerting to the typist. Moreover, the opening in the typewriter in which the cartridge is placed allows noise to readily escape.

The figures illustrate two cover designs for the typewriter which hides the major portion of the cartridge, reducing the visual presence of fluttering and simultaneously reducing the noise level of the machine.

Fig. 1 illustrates a fragmentary side elevational view of a cartridge cover 10 which covers an opening in the typewriter superimposed on a cartridge. The typewriter includes the normal casing cover 8 having a forward terminal end portion 8a beneath which a ledge-like portion 11 of the cover rests. A pair of springs 12 are positioned on either side of the opening, and are connected, as illustrated in Fig. 2, to the casing cover 8. The casing cover includes hinge pins 13 and 14 which mate with apertures 12a in the rear portion of the spring 12, the spring serving to press the ledge 11 against the underside of the terminal end 8a of the casing cover 8. The forward portion of the springs 12 includes inwardly projecting hinge pins 15 which cooperate with snap-lock-like apertures 16 o...