ZARIF method and ZARIF sewing machine double thread chain stitch.
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The innovative invention is patented in the USA Nm. 6095069.
Experimental variant ZARIF sewing machine double thread chain stitch is made in one copy on the basis of the lockstitch sewing machine of 1022 class company «Orsha» (Belarus).
ZARIF sewing machine expands an application range double thread chain stitch of type 401 and improves qualities of a seam on various materials.
An inventor: Dr. Zarif Sharifovich Tadjibaev, Director of «ZARIF Sewing Machine Co., Ltd.».
Youtube Channel: http://www.youtube.com/user/ZARIF1961?feature=mhee
World News: http://wn.com/zarif1961 Advantages of this invention
Advantages ZARIF sewing machine double thread chain stitch before analogues:
1.The sewing machine has very simple mechanical design;
2.The sewing machine sews all types of materials (light, medium, heavy textile materials, knitwear, leather);
3.The sewing machine is capable to connect very densely textile and leather materials with the help of double thread chain stitch;
4.The sewing machine at bar stroke of 32 mm is capable to connect materials with a thickness of 7 mm;
5.In the sewing machine the rotating looper is used;
6.In the sewing machine the needle with one long groove is used; 7.In the sewing machine for giving and a tightening of the top thread, the rotating two-dick-shaped cam thread tensioner is used;
8.In the sewing machine for giving and a tightening of the bottom thread, the rotating two-dick-shaped cam thread tensioner is used;
9.In the sewing machine it is possible to reduce length of a stitch up to 0,5 mm;
10.The sewing machine sews in the reverse feed without application of additional working unit «thread spreader»;
11.The sewing machine sews guarantees on 100 per cent without the skipped stitch;
12.In the sewing machine a needle at movement downwards, the needle will never concern (encounter) on the looper;
13.In the sewing machine the height of lifting of a needle from extreme bottom position is constant for all of materials;
14.The maximum distance between a nose of the looper and a needle in the sewing machine is equal to 0,5 mm;
15.In the sewing machine, all working unit are located at the ends of shaft;
16.In the sewing machine, the looper, pusher and two two-dick-shaped cam thread tensioners have very simple design;
17.Thanks to the application of a know-how, a nut of tension devices, both the top thread, and the bottom thread cannot be regulated at sewing of various materials;
18.In the sewing machine, with the help of a know-how it is possible to regulate the degree of an formation of a loop of the top thread in a stitch, without adjustment of a tension of threads very easily
(the top and bottom threads should has a normal tension):
-For dense connection of materials, it is possible increase the formation of a loop of the top thread;
-For obtaining of a smooth stitch line on light materials, it is possible to decrease the formation of a loop of the top thread;
-For obtaining of an elastic stitch line on elastic materials, it is possible to reduce the formation of a loop of the top thread.
19.Working units of the sewing machine, and also the sewing machine have a high service life.
: Zarif Sharifovich Tadjibaev
: USA Nm. 6095069
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