Lubrication system for print hammer mechanisms

Details Lubrication system for print hammer mechanisms Lubrication system for print hammer mechanisms

1988-12-19

1990-01-30

Sewell, Paul T.

Printing

Selective or progressive

Bed and platen machines

400441, 74519, 184 64, 384383, B41J 722, B41J 900

Patent

active

048965960

ABSTRACT:
The disclosure describes a passive lubrication system for use in a high speed print hammer mechanism to provide continuous lubrication to all print hammer elements. Channels are formed along the length of a pivot pin and filled with a porous material having a finer porosity than the sintered print hammer block serving as the principal reservoir. Fins located at each side of print hammer elements also are of the same porosity as the print hammer block and communicate lubricant to the material in the pivot pin channels. From the channels, lubricant is conveyed to the interface between each print hammer element and the pivot pin by capillary action.

REFERENCES:
patent: 826588 (1906-07-01), Mack
patent: 851201 (1907-04-01), Greening
patent: 1173060 (1916-02-01), Talbott
patent: 1665964 (1928-04-01), Koehler
patent: 1784732 (1930-12-01), Koehler
patent: 2452771 (1948-11-01), La Rocque
patent: 2674134 (1954-04-01), Rigg
patent: 2751264 (1956-06-01), Wood
patent: 4756246 (1988-07-01), Kotasek

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