Typewriting machines – Annular typewriter
Patent
1979-06-25
1981-01-06
Pieprz, William
Typewriting machines
Annular typewriter
101377, 24256, 24257, 403391, 269 22, 269902, 350 9621, B41J 320
Patent
active
042433320
ABSTRACT:
Guide for electrodes in a metal paper printer comprising a multipart arrangement of a guide portion, with parallel grooves for the electrodes, and of a cover portion assembled to the guide portion. The cover portion has a recess extending transversely of the electrodes and retains an elastic, nonconductive, and deformable tube frictionally restraining the electrodes, yet allowing electrode advancement as required.
REFERENCES:
patent: 1566358 (1925-12-01), White
patent: 3058417 (1962-10-01), Norlin
patent: 3187718 (1965-06-01), Coghill
patent: 3715981 (1973-02-01), Huffman
patent: 3826484 (1974-07-01), Check et al.
patent: 3885859 (1975-05-01), Dalgleish et al.
patent: 4046454 (1977-09-01), Pugh
patent: 4088312 (1978-05-01), Frosch et al.
International Business Machines - Corporation
Johnson Kenneth P.
Pieprz William
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