Drive control mechanism of sewing machine

Details Drive control mechanism of sewing machine Drive control mechanism of sewing machine

1984-09-27

1986-10-28

Nerbun, Peter

Sewing

Elements

Starting or stopping

112277, 112278, D05B 6936

Patent

active

046192131

ABSTRACT:
A drive control mechanism and a safety device in a sewing machine in which thread in a predetermined amount necessary for the formation of one seam each time a seam is to be formed. The drive control mechanism comprises a control circuit for allowing current to flow to a machine motor when no thread amount signal is produced though a position signal is produced at the start of the machine. The safety device comprises a thread paying-out detection circuit operable when a position signal is produced, but no thread amount signal is produced, an alarm for producing a sound or light warning in response to the operation of the thread paying-out detection circuit and a motor stop circuit for interrupting flow of current to a machine motor.

REFERENCES:
patent: 4215641 (1980-08-01), Dobrjanskyj et al.
patent: 4237807 (1980-12-01), Meier et al.
patent: 4408554 (1983-12-01), Takiguchi et al.
patent: 4432297 (1984-02-01), Kemmel

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