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Thread control device for a sewing machine

A control device and sewing machine technology, which is applied in the direction of sewing machine thread take-up device, sewing machine thread hook, sewing machine components, etc. It can solve the problem of sewing machine that does not want missing thread or too tight sewing thread control, etc., to achieve small resistance and prevent thread Stitch disorder, prevent loose suture effect

Inactive Publication Date: 2007-08-08
THE SINGER CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Despite the above and other measures in the prior art, however, some sewing machines still suffer from undesired missing or tight stitch control problems

Method used

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  • Thread control device for a sewing machine
  • Thread control device for a sewing machine
  • Thread control device for a sewing machine

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Embodiment Construction

[0030] The following more detailed description of the present invention is based on the brief content and background technology described above and in context, but is not limited to the foregoing description.

[0031] Throughout the description, the description structure has, includes, or contains specific components, or the description process has, includes, or contains specific steps. It is expected that the composition of the present invention may also consist essentially of the referenced components, or consist of composition. .

[0032] In an advantageous embodiment of a lockstitch sewing machine according to the present invention, the thread extends from the horizontally mounted spool to the thread guide and pretensioner, and then to the disc gap tensioner. Through these thread control devices, the suture passes through the thread take-up device, such as a thread take-up lever, then passes through the thread control device provided by the present invention, and then ent...

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Abstract

A sewing machine having a reciprocatory needle and a reciprocatory thread-take-up device to deliver thread to the needle employs a thread control device located between the thread take-up device and the needle to engage and apply light tension to the thread. The thread control device can have two opposed plates between which the thread runs and which cooperate to apply spring pressure to the thread, for example, a guide plate and a spring plate. The guide plate or other device can include catcher structure to catch thread escaping the take-up device. The thread control device can help control premature descent of the thread and improperly tensioned stitches.

Description

technical field [0001] The present invention relates to a sewing machine mechanism and a sewing machine using the mechanism. The present invention relates particularly, but not exclusively, to household sewing machines and, if desired, to industrial or other sewing machines and the like. In summary, the present invention will provide a new and improved thread control device for the sewing machine described above. Background technique [0002] Sewing machines are prone to seam control problems when chaining double or multiple threads to join or sew fabric or other sheets together to form bartack stitches. The invention is also applicable to single thread sewing machines which are prone to thread control problems. For the sake of brevity, the above sewing machines are referred to herein as "lockstitch machines" and "lockstitch machines". The complexity of conventional lockstitch sewing machines, which require the reciprocation of multiple wire elements, can sometimes cause ...

Claims

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Application Information

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IPC IPC(8): D05B1/00D05B1/12D05B47/00D05B49/00D05B53/00D05B61/00
CPCD05B49/00D05B47/00
Inventor P・E・罗德里格斯库托
Owner THE SINGER CO
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