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Spool holder and sewing machine provided therewith

Patent Number: 8464651
Publication Date: 2013-06-18
Inventor:

A spool holder includes a spool base and a thread guide mechanism including a thread guide member having thread guide portions guiding the threads extending from thread spools, respectively and a divided support pillar disposed so as to support the guide member on the spool base and including an upper support pillar having an upper end swingably mounted on the guide member and a lower support pillar having a lower end which is swingably mounted on the spool base, and a holding unit which ...

Concentric hopping foot for sewing machine

Patent Number: 8453587
Publication Date: 2013-06-04
Inventor:

A sewing machine hopping foot assembly having a hopping foot which has a hopping foot top with a hopping foot needle bar opening, a hopping foot base with a hopping foot base opening, and one or more hopping foot arms connecting the hopping foot top to the hopping foot base, having a hopping foot bushing with an interior annular space, the hopping foot bushing being connected to the hopping foot, the annular space providing for a normal up and down sewing movement of the needle bar in the ...

Process to manufacture tufted backing materials

Patent Number: 8448589
Publication Date: 2013-05-28
Inventors: ; ;

A process to manufacture tufted backing materials comprises the steps of a) providing a roll bearing a backing material which backing material comprises a first side exhibiting a first colour and a second side exhibiting a second colour, wherein the first colour is different from the second colour, the first side is the front side and the second side is the rear side, b) unwinding the backing material from the roll, c) tufting the backing material, d) cutting the backing material at a ...

Force sensing device adapted for sensing thread tension in a long-arm or mid-arm sewing machine

Patent Number: 8448588
Publication Date: 2013-05-28
Inventor:

A force sensing device is adapted for sensing thread tension in a long-arm or mid-arm sewing machine. The force sensing device comprises the sewing machine mechanically coupled to a force sensor disk. A user can rotate a tension adjuster knob to increase or decrease thread tension as necessary. The force sensor disk comprises a variable resister that is electrically coupled to a force sensor disk cable; the force sensor disk cable is electrically coupled to a measurement resistor RM, a load ...