Sewing machine bobbin-case This invention relates to sewing machine bobbin-cases, more particularly of the two-part-type forming the subject of my copending U. S. patent application, Serial No. 263,318, filed Mar. 22, 1939. In the two-part bobbin-case disclosed in... JD Karle - US 被...
BOBBIN CASE OF SEWING MACHINEPROBLEM TO BE SOLVED: To prevent a bobbin thread from being reversely twisted while applying large thread tension to the bobbin thread.SUGA HIROAKI菅 宏彰YANAGISAWA MASATO▲柳▼沢 理人
Machine not sewing: This is one of the most common sewing machine problems faced by all. This could be because either the thread or the needle is not properly set up. Read the user manual carefully while threading and inserting the needle. While threading, make sure that the presser foot i...
If it's still breaking, take your sewing machine to the shop. Return to theProblems List. Problem: Breaking bobbin threads This is a relatively uncommon problem. Thank goodness! Inspect the bobbin. Are there any burrs or nicks? Is it bent or warped? To check, put the bobbin on the spoo...
Make a habit ofcleaning the sewing machine:be honest, when was the last time you did a top-to-bottom cleaning process to your machine? Dust can accumulate in the bobbin area and tension the assembly. If you use the sewing machine daily or weekly, cleaning is a must. If you use the ...
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The system, which can be used on any type of sewing machine, replaces the traditional bobbin and holder with a 5000 m spool of thread in a spherical housing. In has a mechanism incorporating a spindle with a disc that rotates clockwise and reciprocates a rod vertically inside a fixed compo...
According to a sewing machine with a bobbin thread monitor, the light emitted from a luminescence element is reflected by a bobbin thread or a rotating hook bobbin and received by a light receiving element. The light receiving element outputs the detection signal according to an amount of thread...
A mechanism for detecting the depletion of bobbin thread in a sewing machine. A bobbin is formed with a polygonal core having a plurality of light reflecting surfaces contained thereon. A light source transmits a beam of light toward the... DJ Coughenour,J Brown,JA Herr - US 被引量: 26...
To provide a sewing machine with an automatic bobbin thread winding device capable of optimizing winding of a bobbin thread when there is no bobbin thread.;SOLUTION: When an embroidering mode is recognized (N at S2), winding of the bobbin thread is started only for a dedicated bobbin thread...