JPS5934780U

JPS5934780U - Sewing machine thread tension adjustment device

Info

Publication number: JPS5934780U
Application number: JP13114082U
Authority: JP
Inventors: 藤田　州司
Original assignee: ジューキ株式会社
Priority date: 1982-08-30
Filing date: 1982-08-30
Publication date: 1984-03-03

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は本実施例の縁かがり縫いミシンの斜視図、第２
図は通常の縁かがり縫目の斜視図、第３図は巻き縫いの
縁かがり縫目の斜視図である。図において、２は針、３は上ルーパー、４は下ルーパ−
、■は上ルーパー糸、Ｕは下ルーバー糸、Ｎは針糸、７
は下ルーパー糸用の糸調子器、１０は補助付与手段９の
糸調子器である。Fig. 1 is a perspective view of the overlock sewing machine of this embodiment;
The figure is a perspective view of a normal overlock stitch, and FIG. 3 is a perspective view of a rolled hem stitch. In the figure, 2 is the needle, 3 is the upper looper, and 4 is the lower looper.
, ■ is upper looper thread, U is lower louver thread, N is needle thread, 7
10 is a thread tension device for the lower looper thread, and 10 is a thread tension device for the auxiliary applying means 9.

Claims

[Scope of Claim for Utility Model Registration] In a sewing machine that forms an over-edge stitch along the edge of a fabric by the cooperation of a needle, an upper looper, and a lower looper, a lower looper thread path between a lower louver and a thread supply body. a first thread tension applying means 7 which is arranged in relation to the upper and lower looper threads and applies a tension substantially equal to the upper looper threads so that the intertwining point of the upper and lower looper threads is formed on the edge of the fabric; Second thread tension applying means 7, 10 arranged in relation to the lower louver thread path and applying a stronger tension than the upper looper thread so that the intertwining points of the upper and lower looper threads are formed on the back side of the fabric. Tension adjustment device.