Sewing – Stitch forming – Feeding work material
Patent
1978-10-02
1981-10-06
Schroeder, Werner H.
Sewing
Stitch forming
Feeding work material
11212112, 112141, 112153, 112 32, D05B 3300, D05B 3510, D05B 2100
Patent
active
042929083
ABSTRACT:
Apparatus for independently guiding two overlaid fabric workpieces as they are simultaneously fed through a sewing work station and are seamed together, wherein the guide apparatus comprises a pair of opposed guide wheels located upstream from the work station with respect to the direction of workpiece feed through the work station; separate servo motors for rotating guide wheels in planes perpendicular to the direction of workpiece feed; a separating bar for spacing apart the two workpieces and for individually pressing them against a different one of the guide wheels; and separate sensors for monitoring the edges of each workpiece and for controlling the servo motors separately to rotate their guide wheels so as to center each workpiece edge opposite its corresponding sensor.
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patent: 4132184 (1979-01-01), Burton
Falik Andrew M.
Levi Strauss & Co.
Schroeder Werner H.
Shaw, Jr. Philip M.
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