Transformable structure for producing a multi thread single line stitch and method and machine for its realization

Abstract

A multi-thread single-line chain stitch line, consisting of at least three threads. This method provides for the formation of variable structures of stitches, based on varying sequences for the conjoining of several top threads, loaded to their individual needles, with several bottom threads, loaded to their individual loopers. The method suggests intertwining top threads between each other. The proposed stitch structure provides homogeneity of mechanical stresses in the stitch line, resulting in higher strength and durability. The machine to provide such stitch line comprises a revolver, bringing required needles to the operation point and intertwining threads during formation of the stitch line, and likewise comprising a revolver for bringing required loopers to the operation point. In one of the embodiments of the present invention, only three top threads are used, with the looper having no bottom thread loaded in it.

1 . Manufacturing of a multi-thread single-line chain stitch line, consisting of at least three threads, which threads are conjoined at the material perforation points in a pre-determinable sequence, which sequence is variable along the stitch line, which effect is obtained by utilizing a pre-determinable sequencing program for conjoining the threads, and which program is determined by the desired structure of the stitch line. 
     
     
         2 . Manufacturing of a multi-thread single-line chain stitch line, as claimed in  claim 1 , consisting of at least two top threads and at least one bottom thread, where said top threads on the top side of the material are independent of each other and/or intertwined between each other (as shown in  FIG. 1 ). 
     
     
         3 . Manufacturing of a multi-thread single-line chain stitch line, as claimed in  claim 2 , where said desired structure includes n number of top threads ( 3   a ,  3   b  . . .  3   x ), where n=2 . . . 20, and m number of bottom threads ( 4   a ,  4   b  . . .  4   x ), where m=1 . . . 20, as shown in  FIG. 2  (on which figure: top threads  3   a ,  3   b −n=2, and bottom threads  4   a ,  4   b −m=2). 
     
     
         4 . Manufacturing of a multi-thread single-line chain stitch line, as claimed in  claim 2 , where each top thread is loaded into its individual needle and each bottom thread is loaded into its individual looper. 
     
     
         5 . Manufacturing of a multi-thread single-line chain stitch line, as claimed in  claim 4 , using a means for sequentially enabling a required needle and another means for sequentially enabling a required looper simultaneously, providing for the conjunction of one of the top threads with one of the bottom threads; said required needle and said required looper forming a current couple; wherein said current couple is chosen by said pre-determinable sequencing program. 
     
     
         6 . Manufacturing of a multi-thread single-line chain stitch line, as claimed in  claim 5 , by using a means for providing a desired number of cycles, where each cycle consists of the following steps ( FIG. 3 ):
 After bringing a current couple into the operating position:   A—passing of the top thread ( 3   a ) through material ( 1 ) by the needle ( 5   a ); passing the loop of the bottom thread ( 4   a ) by the looper ( 6   a ) through the loop of the top thread ( 3   a );   B—extracting needle ( 5   a ) out of material ( 1 ) engaging the top thread ( 3   a ) loop by looper ( 6   a );   C—shifting material ( 1 ) to extend the bottom thread ( 4   a ) loop to the next perforation point;   D—passing of the top thread ( 3   b ) through material ( 1 ) by the needle ( 5   b ), further passing the needle ( 5   b ) with the top thread ( 3   b ) through the bottom thread ( 4   a ) loop;   E—passing of the bottom thread ( 4   a ) by looper ( 6   a ) through the top thread ( 3   b ) loop and extracting needle ( 5   b ) out of material ( 1 ).   
     
     
         7 . Manufacturing of a multi-thread single-line chain stitch line, as claimed in  claim 6 , where such means for enabling said required needle is a needle revolver; said needle revolver having needle bars located along said needle revolver's periphery and oriented along its rotation axis. 
     
     
         8 . Manufacturing of a multi-thread single-line chain stitch line, as claimed in  claim 7 , where said needle revolver provides an action for intertwining said top threads between each other. 
     
     
         9 . Manufacturing of a multi-thread single-line chain stitch line, as claimed in  claim 8 , where such means for enabling said required looper with one of the bottom threads is a looper revolver, which has said loopers located along the periphery of said looper revolver. 
     
     
         10 . Manufacturing of a multi-thread single-line chain stitch line, as claimed in  claim 9 , where said looper revolver provides a means for intertwining said bottom threads between each other. 
     
     
         11 . Manufacturing of a multi-thread single-line chain stitch line, as claimed in  claim 8 , where said current couple is formed by one of said needles and a single looper with one bottom thread loaded in it. 
     
     
         12 . Manufacturing of a multi-thread single-line chain stitch line, as claimed in  claim 1 , consisting of at least three top threads, each top thread forming a loop at the material perforation point in a pre-determinable sequence, said loop being conjoined with the next loop at the next perforation point by means of a looper; no thread being loaded in said looper; said top threads being loaded in their individual needles; said individual needles being enabled in said pre-determinable sequence, which sequence is variable along the stitch line; and where said pre-determinable sequence is determined by said pre-determinable sequencing program. 
     
     
         13 . Manufacturing of a multi-thread single-line chain stitch line, as claimed in  claim 12 , wherein said desired structure includes n number of top threads ( 3   a ,  3   b  . . .  3   x ), where n=3 . . . 20 and wherein said top threads on the top side of the material are independent of each other and/or intertwined between each other (as shown in  FIG. 5 ). 
     
     
         14 . Manufacturing of a multi-thread single-line chain stitch line, as claimed in  claim 12 , by use of a means for providing a desired number of cycles, where each cycle consists of the following steps ( FIG. 6 ):
 A—After bringing one of said needles ( 5   a ), with one of said top threads ( 3   a ), into the operating position for said cycle: passing of the thread ( 3   a ) through material ( 1 ) to be sewn by needle ( 5   a ); engaging the thread ( 3   a ) by the looper ( 6   a ) under material ( 1 );   B—Extracting needle ( 5   a ) out of material ( 1 ) and shifting said material ( 1 ) to provide extension of the thread ( 3   a ) to the next perforation point, forming the thread ( 3   a ) loop;   C—Bringing one of said needles ( 5   b ), with one of said top threads ( 3   b ), into the operating position for said cycle;   D—Passing of the thread ( 3   b ) through material ( 1 ) by needle ( 5   b ) and passing the thread ( 3   b ) loop through the thread ( 3   a ) loop by the looper ( 6   a ); engaging the thread ( 3   b ) by the looper ( 6   a ) under material ( 1 );   E—Extracting needle ( 5   b ) out of said material ( 1 ) and shifting material ( 1 ) to extend the thread ( 3   b ) to the next perforation point, forming the thread ( 3   b ) loop; and   F—Bringing needle ( 5   c ), with one of said top threads ( 3   c ), into the operating position for said cycle; passing of the thread ( 3   c ) through material ( 1 ) by needle ( 5   c ) and passing the thread ( 3   c ) loop through thread ( 3   b ) loop by looper ( 6   a ).   
     
     
         15 . Manufacturing of a multi-thread single-line chain stitch line, as claimed in  claim 14 , where such means for enabling said required needle is a needle revolver; said needle revolver has needle bars located along said needle revolver's periphery and oriented along its rotation axis. 
     
     
         16 . Manufacturing of a multi-thread single-line chain stitch line, as claimed in  claim 15 , where said needle revolver provides an action for intertwining said top threads between each other. 
     
     
         17 . A sewing machine for manufacturing a multi-thread single-line chain stitch line, wherein at least three threads are used, said sewing machine basically comprising a means for sequentially enabling a required needle, at least one looper, a feed mechanism to feed material to be sewn, a drive mechanism to drive said means for sequentially enabling a required needle, the looper and the feed mechanism, and further comprising a means for synchronization thereof, said sewing machine providing a means for conjoining said threads at the material perforation points in a pre-determinable sequence, which sequence is variable along the stitch line, which sequence is obtained by utilizing a pre-determinable sequencing program for conjoining the threads. 
     
     
         18 . A sewing machine for manufacturing a multi-thread single-line chain stitch line, as claimed in  claim 17 , wherein at least two top threads and at least one bottom thread are used, and each said top thread is loaded into its individual needle and each said bottom thread is loaded into its individual looper, said needles and said looper or loopers comprising said means for conjoining said threads. 
     
     
         19 . A sewing machine for manufacturing a multi-thread single-line chain stitch line, as claimed in  claim 18 , comprising such means for sequentially enabling said required needle with one of the top threads and another means for sequentially enabling a required looper with one of the bottom threads simultaneously, providing for conjunction of one of the top threads with one of the bottom threads; said required needle and said required looper forming a current couple; wherein said current couple is chosen by pre-determinable sequencing program. 
     
     
         20 . A sewing machine for manufacturing a multi-thread single-line chain stitch line, as claimed in  claim 19 , wherein such means for enabling said required needle is a needle revolver; said needle revolver has needle bars located along said needle revolver's periphery and oriented along its rotation axis; and said needle revolver provides an action for intertwining said top threads between each other. 
     
     
         21 . A sewing machine for manufacturing a multi-thread single-line chain stitch line, as claimed in  claim 20 , where such means for enabling said required looper with one of the bottom threads is a looper revolver, which has said loopers located along said looper revolver's periphery. 
     
     
         22 . A sewing machine for manufacturing a multi-thread single-line chain stitch line, as claimed in  claim 20 , where said current couple is formed by one of said needles and a single looper with one bottom thread loaded in it. 
     
     
         23 . A sewing machine for manufacturing a multi-thread single-line chain stitch line, as claimed in  claim 17 , with at least three top threads being loaded into their individual needles, no thread being loaded in said looper; said individual needles being enabled in said pre-determinable sequence, which sequence is variable along the stitch line; and wherein said pre-determinable sequence is determined by said pre-determinable sequencing program. 
     
     
         24 . A sewing machine for manufacturing a multi-thread single-line chain stitch line, as claimed in  claim 23 , where such means for enabling said required needle is a needle revolver; said needle revolver has needle bars located along said needle revolver's periphery and oriented along its rotation axis.