Alignment device for a sewing machine

Details Alignment device for a sewing machine Alignment device for a sewing machine

1987-08-03

1989-05-09

Reynolds, Wm. Carter

Sewing

Special machines

Tube forming

112306, 112322, D05B 2712

Patent

active

048278564

ABSTRACT:
An alignment device for the automatic adjustment of the edge of a tubular workpiece to be sewn on a sewing machine having, a presser foot, a feed dog operating on the presser foot, a sensing device for detecting the edge of the workpiece, and a guide member disposed on a side of the feed dog. The alignment device has a device for rotatably driving the guide member, and a device responsive to the sensing device for controlling the equatorial or peripheral speed of the guide member relative to the sewing speed of the sewing machine.

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patent: 4467734 (1984-08-01), Rohr
patent: 4479447 (1984-10-01), Rohr
patent: 4530294 (1985-07-01), Pollmeier et al.

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