Detector for use on sewing machine

Details Detector for use on sewing machine Detector for use on sewing machine

1988-07-15

1991-01-29

Nerbun, Peter

Sewing

Elements

Starting or stopping

250233, 318467, D05B 6924

Patent

active

049878425

ABSTRACT:
One of a plurality of photoelectric detector plates are mounted on a coupling fixed to an arm shaft of a sewing machine, and have predetermined light shields. A light-emitting means is disposed on one side of the photoelectric detector plates for emitting light toward the photoelectric detector plates, and a photodetector means is disposed on the other side of the photoelectric detector plates for receiving the light emitted from the light-emitting means. Conditions of the sewing machine can be detected by the manner in which the photodetector means receives the light.

REFERENCES:
patent: 3573581 (1971-04-01), Dutko et al.
patent: 3683294 (1972-08-01), Gaa
patent: 3738297 (1973-06-01), Sangiorgi
patent: 4463698 (1984-08-01), Shinozaki et al.
patent: 4584954 (1986-04-01), Soyama et al.

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