Device for braking the limbs of needle threads in oscillating ho

Details Device for braking the limbs of needle threads in oscillating ho Device for braking the limbs of needle threads in oscillating ho

1985-09-19

1987-02-17

Reynolds, Wm. Carter

Sewing

Stitch forming

Shuttle type

112192, 112232, D05B 5712

Patent

active

046431128

ABSTRACT:
One limb of each loop which is formed by the needle thread in an oscillating hook type sewing machine is temporarily in contact with the loop-engaging member of a braking device whose torsion spring is non-rotatably installed in the hollow mandrel of the hook. The loop-engaging member is turned by successive loops from a starting position, relative to the hook and against the opposition of the spring so that it tensions the loop while the latter is raised by the takeup lever. The spring thereupon rapidly returns the loop-engaging member to its starting position. The loop-engaging member is integral with a loop catcher which intercepts the loop when the latter is cast off the hook and which ensures that the loop comes in contact with the loop-engaging member.

REFERENCES:
patent: 1129365 (1915-02-01), Skinner
patent: 1162697 (1915-11-01), Jerram

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