US 2124316 A
Description (OCR text may contain errors)
July 19 1938. P. scHbNFELD 1 2,124,316 I WARP FABRIC Filed Dec. 16, 1957 Invepfor: PAUL 5CHQNFEL;
w I Patented July l9, 1938 PATENT orrice 2,124,318 I WARP FABRIC Paul Schiinfeld, Cliemnitz, Germany Application December 16, 1937, Serial No. 180,096
In Germany October 23, 1937 V 3 Claims.
This invention relates to a two-machine plain knitted warp fabric provided with rubber warp threads.
It has been proposed already to produce twomachine plain knitted warp goods provided between the two thread groups with rubber warp threads in such manner that the rubber threads do not run back from the transverse cut edges of the fabric, since warp goods are chiefly used as cutting material from which portions are cut off and sewn together to form wearing apparel, etc. This end is attained by reeurrently tying up the rubber warp threads in the goods so as to form meshes and omitting lateral racking of the threads of the upper thread group in the courses where these meshes are formed. This is done to prevent the meshes formed by the rubber threads from sticking. out of the fabric and thereby rendering the goods unsightly. In the next course A the upper thread group carries out underlaying operations.
From these known fabrics the warp goods according to the present invention differ inso far as the threads of the upper group also form a mesh in the course following the courses in which the rubber warp threads form meshes, so that the heads of the meshes formed by the rubber threads are caught by the feet of these meshes of the upper group.
In this way, the upper thread group renders the additional service of catching the meshes of the rubber warp threads which are thus fixed at the mesh-forming points in an absolutely reliable -manner.
By way of example, one form of the invention is illustrated in the drawing which shows a lapping diagram to bring out clearly the composition of the fabric.
The warp fabric consists of the two thread groups I and 8,. the group 1 being the upper one and forming an ordinary ground fabric, such as a plain tricot. The thread group 8 is the upper one and worked with overlaying and underlaying operations. For the sake of 'clearness, only one thread is-shown of the group 8 which chiefly serves for forming ribs in the ground fabric built up by'the thread group I, as described in Patent No. 2,012,355. For this purpose, the threads of- (Cl. 66-195) I ing is performed in opposite direction, and in the course 6 lateral racking of the upper thread group 8 is omitted. The mode of racking of the upper thread group 8 is thus repeated every six cours Between the two thread groups I, 8 the rubber warp threads 8 are worked in of which only one is shown. The rubber warp threads are reeurrently tied up in the fabric by forming meshes therein, which is effected simply by placing the threads around their needles at the points concerned. 10 According to the invention, the threads of the' upper group 8 also form a mesh in the course following the courses in which the rubber threads 8 form one. For example, when the rubber threads 8 form a mesh in the courses 3, as shown, the 15 'upper thread group 8 will form meshes in every course 4. The result is that the heads of the meshes formed by the rubber threads 8 are caught by the feet of these meshes of the upper thread group 8 and each rubber thread is thus reliably 20 secured against running back.
In the known fabrics mentioned lateral racking of the lower thread group 8 is omitted in the courses in which the rubber warp threads 8 form meshes to prevent the rubber-thread meshes from 5 being raised out of the fabric. The same'efiect is attained by underlaying of the upper group 8 in the courses concerned, i. e. in the courses 3, as
If the rubber warpthreads 8 are gathered in 30 a single lapping machine in the usual manner, all threads 8 will be tied up by forming meshes in one and the same course. To avoid this it is possible to subdivide the threads 8 into two or more groups and to guide these groups independently of one 35 another in a corresponding number of lapping machines. It thus becomes possible to tie up the threads 8 of one group in mesh-forming manner in the other group or groups, so that the meshes formed by these threads will be staggered relative 40 to one another in the fabric. The rubber threads 8 of one group may further be placed to the left warp threads inserted between them and recurrently tied up in a mesh forming manner and in which the threads of the upper group also form a mesh in the course following the courses in which the rubber warp threads form meshes, the headsof the meshes formed by the rubber threads being caught and held by the feet of said meshes formed by the threads of the upper thread group.
2. Warp fabric according to claim 1, wherein the upper thread group is underlaid in the courses in which the rubber warp threads form meshes. 3. Warp fabric according to claim 1, wherein the rubber warp threads comprise a plurality of groups tied up in mesh-forming manner at points staggered relative to one another in the lentitudinal direction of the fabric.
' PAUL BCHONFEID.