Cartridge for a ribbon of a typewriter or like office machines

Details Cartridge for a ribbon of a typewriter or like office machines Cartridge for a ribbon of a typewriter or like office machines

1975-11-25

1977-03-08

Burr, Edgar S.

Textiles: fiber preparation

197173, B41J 3304, B41J 3536

Patent

active

040108392

ABSTRACT:
A cartridge for a carbon ribbon of an office machine, comprises a container in which are rotatable a feed spool and a take-up for the carbon ribbon. The carbon ribbon passes from the feed spool out of a first aperture and back into the container through a second aperture of the container. The take-up spool is rotatable mounted on a support which is pivoted in the container about a fixed axis. The container has at the bottom an opening arranged in correspondence of a toothed roller also rotatable in the container and adapted to receive a driving shaft of the machine for the rotation of the toothed roller. A spring biases the support of the take-up spool against the teeth of the toothed roller for holding the outermost turn of the carbon ribbon wound on the take-up spool in engagement with the toothed roller, so that for the rotation of the take-up spool by the toothed roller, the ribbon is unwound from the feed spool to the take-up spool.

REFERENCES:
patent: 3211273 (1965-10-01), Bishop
patent: 3409114 (1968-11-01), Okuda
patent: 3442366 (1969-05-01), Spears
patent: 3528626 (1970-09-01), Bumb
patent: 3548994 (1970-12-01), Hudson
patent: 3643779 (1972-02-01), Anderson et al.
patent: 3731781 (1973-05-01), Caudill et al.
patent: 3877561 (1975-04-01), Guerrini et al.
patent: 3887056 (1975-06-01), Lehmann
patent: 3899065 (1975-08-01), Brignole

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