Sewing – Special machines – Article attaching
Patent
1990-09-07
1991-12-03
Schroeder, Werner H.
Sewing
Special machines
Article attaching
112113, 112153, 112306, 112122, D05B 312, D05B 322, D05B 3700
Patent
active
050691481
ABSTRACT:
A trouser-fly piece serging apparatus includes a guide unit disposed upstream of a serging station and composed of a first elongate guide member extending at an angle relative to the path of movement of a trouser-fly piece being advanced by a serging unit, and a second elongate guide member extending parallel to the path of movement of the trouser-fly piece. The trouser-fly piece is guided by the first guide member into the serging station so that a trimming cutter disposed immediately upstream of the serging unit assumes a position to conform to a curvature of the leading end of a substantially arcuate trimming line passing across a corner of the leading end of the trouser-fly piece. Synchronous operation of the serging unit and the trimming cutter causes the trouser-fly piece to turn in one direction during which an arcuate corner which is trimmed by the trimming cutter and subsequently serged by the serging unit is automatically produced on the leading end of the trouser-fly piece. Then, the trouser-fly piece is guided by the second guide member, and as the trouser-fly piece is further advanced, a curved longitudinal edge of the trouser-fly piece including the trimmed arcuate corner is completely serged with an overedge or serge stitching.
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Dudek Chet
Fukumoto Yasuhiro
Ishikawa Kiichirou
Lewis Paul C.
Schroeder Werner H.
Yoshida Kogyo K. K.
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