Device for the formation of a stack of flat articles, especially mail envelopes
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 6, 1993
Grant Date -
N/A
app pub date -
Mar 31, 1992
filing date -
Apr 4, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A device which forms a stack of flat articles such as envelopes is disclosed. A conveyor delivers flat articles to a movable carriage. The movable carriage includes a horizontal support and vertical support for aligning flat articles received. A stacking head supported on the movable carriage comprises four rotary rollers positioned at the vertices of a parallelogram. Two non-adjacent rollers are movable but maintained a fixed distance apart. The rollers support a belt which transfers received flat articles from the conveyor onto the horizontal and vertical supports. A strain-sensitive detector is coupled to the movable rollers for providing a signal to control carriage movement as the stack of accumulated flat articles increases.
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Family
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Cited Art Landscape
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