Air control switch set for an overedge sewing machine

Details Air control switch set for an overedge sewing machine Air control switch set for an overedge sewing machine

1999-07-14

2000-05-09

Nerbun, Peter

Sewing

Elements

Starting or stopping

112299, 112DIG3, D05B 6908

Patent

active

060588616

ABSTRACT:
An air control switch set for a switching machine, including a base frame, an air control valve fixedly mounted on the base frame to guide air from an air source to an air nozzle and thread suction device, a switch controlled to close/open the air control valve, a control bar vertically slidably coupled to the base frame and reciprocated by a pedal, a pull rod having a bottom end fixedly fastened to the base frame and a top end coupled to a motor through a link, a stop member fixedly mounted on the control bar, and a rocker arm turned about a pivot at the base frame and forced by the stop member to press on the switch in opening the air control valve upon a down stroke of the control bar before the base frame is lowered with the control bar to move the link in turning on the motor.

REFERENCES:
patent: 3667410 (1972-06-01), Bianchi
patent: 3812801 (1974-05-01), Lukowicz
patent: 4271775 (1981-06-01), Tice
patent: 5495817 (1996-03-01), Zeigler, Sr. et al.

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