JPH02109568U

JPH02109568U -

Info

Publication number: JPH02109568U
Application number: JP1735389U
Authority: JP
Priority date: 1989-02-16
Filing date: 1989-02-16
Publication date: 1990-09-03

Description

[Brief explanation of the drawing]

第１図は本考案の実施例の縁かがり縫いミシン
の一部の正面図、第２図は第１図のミシンで１本
針２本糸縁かがり縫いを行う糸の掛け方を示した
図、第３図は本考案の他の実施例の上ルーパー腕
と上ルーパー天秤、下ルーパー天秤の関係を示し
た正面図、第４図は本考案のさらに他の実施例の
上ルーパー天秤、下ルーパー天秤を設けた上ルー
パー腕の正面図、第５図は本考案のさらに他の実
施例の下ルーパー天秤を設けた上ルーパー腕の正
面図、第６図〜第９図は本考案のさらに他の実施
例の下ルーパー天秤を設けた上ルーパー腕の側面
断面図、第１０図は本考案の他の実施例の下ルー
パー天秤を設けた上ルーパー腕の側面断面図及び
背面図、第１１図は従来の２本針４本糸縁かがり
縫いミシンの斜視図、第１２図は従来の縁かがり
縫いミシンの一部の正面図、第１３図〜第１５図
は異なつた縁かがり縫い目を示した図、第１６図
は不完全な１本針２本糸縁かがり縫い目を示した
図である。４２……第２の下ルーパー天秤、４３……切換
式下ルーパー天秤、４４……段付軸、４５……径
大部、４５′……円形凹部、４６……ばね、４７
，４８……溝または切欠き、４９……カラー、５
０……ピン。 Fig. 1 is a front view of a part of the overlock sewing machine according to the embodiment of the present invention, and Fig. 2 is a diagram showing how to apply thread to perform a one-needle, two-thread overlock stitch with the sewing machine shown in Fig. 1. , FIG. 3 is a front view showing the relationship between the upper looper arm, the upper looper balance, and the lower looper balance in another embodiment of the present invention, and FIG. 4 shows the upper looper balance and lower looper balance in still another embodiment of the present invention. FIG. 5 is a front view of an upper looper arm provided with a looper balance, FIG. 5 is a front view of an upper looper arm provided with a lower looper balance according to still another embodiment of the present invention, and FIGS. 6 to 9 are further embodiments of the present invention. FIG. 10 is a side sectional view of an upper looper arm provided with a lower looper balance according to another embodiment of the present invention; FIG. The figure is a perspective view of a conventional two-needle, four-thread overlock sewing machine, Figure 12 is a front view of a part of a conventional overlock sewing machine, and Figures 13 to 15 show different overlock stitches. FIG. 16 shows an incomplete one-needle, two-thread overlock stitch. 42...Second lower looper balance, 43...Switchable lower looper balance, 44...Stepped shaft, 45...Large diameter portion, 45'...Circular recess, 46...Spring, 47
, 48...Groove or notch, 49...Color, 5
0...Pin.

Claims

[Claims for Utility Model Registration] 1. In a sewing machine equipped with a needle bar drive mechanism, an upper looper drive mechanism, and a lower looper drive mechanism, an upper looper protrudes almost perpendicularly upward from an upper looper arm close to the upper looper arm axis. The balance and the first lever, which is tilted upward on the upper looper arm near the upper looper swing axis.
An overlock stitch sewing machine comprising: a lower looper take-up; and a second lower looper take-up provided coaxially with the inclined lower looper and protruding upward in a substantially vertical direction. 2. The overedge sewing machine according to claim 1, wherein the first lower looper take-up and the second lower looper take-up are integrally formed. 3. The overedge sewing machine according to claim 1, wherein the second lower looper take-up is provided on an upper looper arm between the first lower looper take-up and the upper looper take-up. 4. The overedge sewing machine according to claim 1, wherein one lower looper take-up is configured to rotate and serves as both the first lower looper take-up and the second lower looper take-up.