Sewing machine apparatus with improved shaft speed measuring and

Details Sewing machine apparatus with improved shaft speed measuring and Sewing machine apparatus with improved shaft speed measuring and

1986-05-29

1987-09-15

Nerbun, Peter

Sewing

Elements

Starting or stopping

112445, 11212111, 318318, D05B 6918

Patent

active

046931970

ABSTRACT:
A detector for detecting the angular position of the main shaft of a sewing machine and the indicator apparatus of a sewing machine are utilized to output the RPM of the main shaft to the indicator apparatus. The detector detects the cycle time of the main shaft rotation by referencing a clock signal and comparing it with preset data. Thereby, the RPM of the main shaft is determined.

REFERENCES:
patent: 4386301 (1983-05-01), Neki et al.
patent: 4393796 (1983-07-01), Dunn et al.
patent: 4602581 (1986-07-01), Neki et al.

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