Browse Prior Art Database

Vertical Mounting Ribbon Cartridge With External Spike Driver

IP.com Disclosure Number: IPCOM000043232D
Original Publication Date: 1984-Aug-01
Included in the Prior Art Database: 2005-Feb-04
Document File: 2 page(s) / 48K

Publishing Venue

IBM

Related People

Stone, WC: AUTHOR

Abstract

A ribbon cartridge 1 is vertically guided downwardly to be held in position on a typewriter by four springs 2 (one shown), which are attached to a portion 3 of a typewriter. As the cartridge 1 is moved downwardly, its bottom portion engages a leg 4 of a pivotally mounted yoke 5, which carries a spike driver 6, to pivot the yoke 5 counterclockwise (Figs. 1 and 3) about a pivot pin 7. This forces the spike driver 6 into engagement with a take-up spool 8, which is mounted on a bias arm 9, of the ribbon cartridge 1. This movement of the spike driver 6 into engagement with the take-up spool 8 moves the take-up spool 8 to the left (Fig. 1) against the force of a spring 10, which biases the bias arm 9 to the right (Figs. 1 and 3).

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Vertical Mounting Ribbon Cartridge With External Spike Driver

A ribbon cartridge 1 is vertically guided downwardly to be held in position on a typewriter by four springs 2 (one shown), which are attached to a portion 3 of a typewriter. As the cartridge 1 is moved downwardly, its bottom portion engages a leg 4 of a pivotally mounted yoke 5, which carries a spike driver 6, to pivot the yoke 5 counterclockwise (Figs. 1 and 3) about a pivot pin 7. This forces the spike driver 6 into engagement with a take-up spool 8, which is mounted on a bias arm 9, of the ribbon cartridge 1. This movement of the spike driver 6 into engagement with the take-up spool 8 moves the take-up spool 8 to the left (Fig.
1) against the force of a spring 10, which biases the bias arm 9 to the right (Figs. 1 and 3). As the cartridge 1 is moved downwardly, the spike driver 6 has its bottom slotted end 11 fit over a shaft 12 of a drive motor 13. As the cartridge 1 is moved downwardly to where the cartridge 1 rests on the portion 3 of the typewriter, as shown in Fig. 4, the springs 2 retain the ribbon cartridge 1 against the portion 3 of the typewriter. A spring 14, which has a smaller force than the springs 2, continuously exerts a force against the cartridge 1 through the leg 4 of the yoke 5. This enables the yoke 5 to pivot clockwise (Figs. 1 and 3) when the cartridge 1 is moved upwardly so that the spike driver 6 is moved out of engagement with the take-up spool 8. Thus, the cartridge 1 can be...