Composite rotary loop taker for lock-stitch sewing machine

Details Composite rotary loop taker for lock-stitch sewing machine Composite rotary loop taker for lock-stitch sewing machine

1988-12-28

1990-10-30

Reynolds, Wm. Carter

Sewing

Stitch forming

Revolving-hook type

112230, D05B 5708

Patent

active

049660888

ABSTRACT:
A composite rotary loop taker which includes a loop seizing point mounted on a substantially annular frame, for use in a lock-stitch sewing machine. The loop seizing point forms a smoothly curved junction with the leading edge of a crosswise member between the opposite sides of a rotatably mounted substantially annular frame, said smoothly curved junction adapted to receive a thread loop and expand the loop over a stationary bobbin basket to form a lock stitch. Preferably, the loop seizing point, downwardly extending lug toward the smoothly curved junction and an inwardly extending foot therefrom are metal, together with a crosswise reinforcing member and a partially circumferential supporting wall on the opposite side of the annular frame. The remaining elements of the annular frame are plastic which may have dispersions of substantially oriented fibers, glass fibers or lubricating fibers, and the frame is restrained from radial expansion and creep by a metal retaining means consisting of a ring substantially around the outer wall of the annular frame.

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patent: 4475475 (1984-10-01), Zylbert
patent: 4493278 (1985-01-01), Badillo
patent: 4601250 (1986-07-01), Clement
patent: 4660487 (1987-04-01), Mikuni

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