Apparatus for thread stitching layers to form a sewn book
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United States of America Patent
Stats
-
Feb 24, 1981
Grant Date -
N/A
app pub date -
Feb 1, 1979
filing date -
Feb 14, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A device for thread stitching layers to form a book wherein the stitching apparatus comprises a conveying mechanism for transporting a plurality of open layers in spaced relation to each other, the conveying device transporting the layers with respect to at least one spiral sewing needle which is rotationally driven, the point of the spiral needle penetrating into the layer backs and exiting the layer backs to stitch the layers together in sequence.
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