Ribbon feed mode shift mechanism

Details Ribbon feed mode shift mechanism Ribbon feed mode shift mechanism

1981-06-04

1982-10-12

Crowder, Clifford D.

Typewriting machines

Including interposed inking device for record-medium

Ribbon-feeding mechanism

400208, 4002272, 4002362, B41J 3322, B41J 3338

Patent

active

043536581

ABSTRACT:
Leaf spring (20) is overcome by a coil spring (15) when a cartridge cylinder (42) is not in place. In that status bottom gear (11) is engaged with bottom gear (17) so that movement from shaft (1) produces long ribbon feed. When a cartridge (40) is mounted having a cylinder (42) adapted to squeeze the spring (20), the force of coil spring (15) is overcome, and top gear (9) engages top gear (16), producing short ribbon feed.

REFERENCES:
patent: 3604549 (1971-09-01), Caudill et al.
patent: 3731781 (1973-05-01), Caudill et al.
patent: 3976183 (1976-08-01), Fleischmann et al.
patent: 4231667 (1980-11-01), Behrendt et al.

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