Oscillating roller mechanism for printing or duplicating machines
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United States of America Patent
Stats
-
Apr 27, 1993
Grant Date -
N/A
app pub date -
Mar 20, 1991
filing date -
Mar 20, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A mechanism for axially oscillating a distribution roller in a printing, duplicating or like machine, in which a drive shaft extends generally coaxially of the distribution roller. The mechanism is operatively associated between the drive shaft and the roller and includes right hand and left hand threads axially spaced of the shaft. A teeter member extends axially of the shaft and is pivotally mounted intermediate its opposite ends on a pivot axis extending generally transverse to the shaft. The teeter member has portions for alternating engagement in the right hand and left hand threads for axially oscillating the distribution roller in response to rotation of the roller. The threads have risers to lift the teeter member out of a respective threads, and a detent device facilitates moving the teeter member into the respective opposite thread.
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