Edge detector for felling folder and method

Details Edge detector for felling folder and method Edge detector for felling folder and method

1988-09-06

1991-04-30

Nerbum, Peter

Sewing

Elements

Frames

112153, 112306, 112147, 250561, D05B 3510

Patent

active

050108336

ABSTRACT:
An edge detector for detecting the edge of fabric in a textile folding or guiding device for an industrial sewing machine. The detector includes a light source mounted adjacent to one surface of the fabric as the fabric enters the folder. The light source is positioned for directing light onto the surface of the fabric. A photodetector is located adjacent to the light source for receiving light reflected from the surface of the fabric. The photodetector provides an output signal in response to the light reflected from the surface of the fabric which is indicative of the position of the fabric in the folder.

REFERENCES:
patent: 4092020 (1978-05-01), Blessing
patent: 4146797 (1979-03-01), Nakagawa
patent: 4481507 (1984-11-01), Takiguchi et al.
patent: 4531466 (1985-07-01), Hanyu et al.
patent: 4612867 (1986-09-01), Rosch et al.
patent: 4653414 (1987-03-01), Harrington
patent: 4696246 (1987-09-01), Rohr et al.
patent: 4714036 (1987-12-01), Raisin et al.
patent: 4766828 (1988-08-01), Nomura et al.

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