Sewing – Elements – Starting or stopping
Patent
1979-08-17
1981-06-02
Schroeder, Werner H.
Sewing
Elements
Starting or stopping
D05B 6922
Patent
active
042704740
ABSTRACT:
A needle positioner for a stitching machine for positioning of such needle selectively in an up or down position. The positioner is pneumatically powered and adapted to be installed on existing machines. The needle positioner functions to selectively position the needle in an up position or a down position. The stitching mechanism includes an air motor for reciprocating the drive shaft of the stitching mechanism. Two pneumatic cylinders are disposed proximate the drive shaft so that when the piston rods of the cylinders are extended, they contact the drive shaft and interrupt rotation of the drive shaft stopping the needle in an up position or a down position. The needle positioner also includes valves in the pneumatic circuit between a source of pressurized fluid and the pneumatic cylinders for directing the flow of air to a desired one of the two cylinders. The valves are operated by a pedal device which allows an operator of the stitching machine to activate the valves and select to stop the needle in its up or down position.
REFERENCES:
patent: 3298341 (1967-01-01), Bonis
patent: 3528379 (1970-09-01), Miller
patent: 3661102 (1972-05-01), Tice
patent: 3924553 (1975-12-01), Tice
patent: 3977339 (1976-08-01), Tice
Falik Andrew M.
Schroeder Werner H.
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