Chain stitching apparatus

Details Chain stitching apparatus Chain stitching apparatus

1986-11-19

1988-07-19

Reynolds, Wm. Carter

Sewing

Stitch forming

Chain or double chain

112 34, 112221, 112239, D05B 106, D05B 2908

Patent

active

047577754

ABSTRACT:
Apparatus for reinforcing or attaching composite structural materials by chain-stitching. A reciprocating head is powered to alternate between outward and return motions. A needle is mounted for outward and return movement with the head, the needle having a material piercing end and a notch adjacent the material piercing end. A cast off has a first portion configured to overlie the notch, to maintain a thread within a notch, and a second portion configured to expand a loop in the thread on release of the thread from the notch. The needle pierces the material on outward motion of the head and withdraws through the material, with the thread in the needle notch, during the return motion of the head. The cast off first portion overlies the needle notch during a part of the needle return movement and moves in trailing relation to the needle during a part of the needle outward movement. A pressure foot may also be commonly driven, with the needle and cast off, by the head.

REFERENCES:
patent: 687777 (1901-12-01), Parkes
patent: 881283 (1908-03-01), Arndt et al.
patent: 1283471 (1918-11-01), Corrall
patent: 2003461 (1935-06-01), Pearson
patent: 2119225 (1938-05-01), Dobyne et al.
patent: 2202388 (1940-05-01), Leveque
patent: 2497231 (1950-02-01), Monroe

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