Hammer device of printer

Details Hammer device of printer Hammer device of printer

1982-01-28

1985-03-19

Burr, Edgar S.

Typewriting machines

Including type-set-assemblage mounted on carrier and...

Including type-faces movable relative to type-face-carrier

101 9348, 4001572, B41J 130

Patent

active

045056048

ABSTRACT:
A hammer device including a striking member supported in a support frame for axial reciprocatory movement for striking a type member supported on one of fingers of a petal type print wheel of a printer at the back, and a guide member for guiding the striking member in its axial reciprocatory movement while preventing same rotation on its own axis mounted in a forward portion of the support frame.
Fabrication and assembling of the striking member having rotation prevented by the guide member can be facilitated as compared with those of a striking member of the prior art having its rotation prevented by a bearing shaped to have a cross-sectional shape of an incomplete circle. This is conducive to increased quality of the printed characters and prolonged service life of the hammer device.

REFERENCES:
patent: D245286 (1977-08-01), Osterlund et al.
patent: 4236842 (1980-12-01), Dick et al.
patent: 4294555 (1981-10-01), Galaske et al.
patent: 4308794 (1982-01-01), Adamoli et al.
patent: 4319849 (1982-03-01), Dollenmayer
patent: 4338035 (1982-07-01), Kondo et al.
"Self-Cooled Print Hammer"; R. D. Mathews; IBM Technical Disclosure Bulletin; vol. 22, No. 4, p. 1318; 9/1979.

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