Typewriting machines – Including type-set-assemblage mounted on carrier and... – Including type-faces movable relative to type-face-carrier
Patent
1982-04-08
1983-12-27
Sewell, Paul T.
Typewriting machines
Including type-set-assemblage mounted on carrier and...
Including type-faces movable relative to type-face-carrier
101 9348, 4001572, B41J 9133
Patent
active
044227841
ABSTRACT:
There is disclosed a hammer assembly for a high speed impact printer of the type comprising a solenoid including a coil and an axially-apertured pole piece, the pole piece having a conically-shaped recessed surface, an axially movable armature within the solenoid, the armature having a tapered conical leading surface facing and substantially parallel to the recessed surface of the pole piece, and a hammer, one end of the hammer being rigidly connected to the armature to form a unitized armature/hammer element for striking a print element in the printer, the hammer extending through the aperture in the pole piece. The present hammer assembly achieves, when compared to previous designs, a longer stroke, an increase in impact energy, a reduction of rebound and settling time, an increase in hammer life expectancy, a decrease in cost, improved reliability and a reduction in weight.
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Arzoumanian Aram S.
Hart Jimmie L.
Hieber Heinz W.
Nojiri Howard H.
Dataproducts Corporation
Sewell Paul T.
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