Патент USA US2136589код для вставки
2,136,589 Patented Nov.‘ 15, 1938 _ UNITED STATES PATENT OFFICE ING Hisashi Kakizaki, Okaya City, Japan, assignor of one-half to Goshi Kaisha Masuzawa Shoten, Okaya City, Japan, a corporation of Japan No Drawing. Application July 21, 1937, Serial No. 154,916 2 Claim. (Cl. 66-125) This invention relates to a process for the mak- ' of threads or separation of the ?bers, it is neces ing of silk knitting characterized in that, after sary to give the doubled threads previously suit collecting silk ?laments drawn from cocoons able twist, and thus much trouble is required, and moreover doubled threads may cause distortion softened in heated water in a ?lament unravel ling device. and causing it to cohere so as to give in loops in the direction of the twist, ,and num- 5 berless slight slacks are formed when the ?ne the desired ?neness, the raw silk thread while still containing a proper amount of water as well as sericin is fed directly to a knitting machine, whereby, one may carry out knitting operations threads are drawn out during twining operations, due to the fact that some diiference in the'ten sion of ?ne threads is caused when each of them is drawn from the bobbins, etc., and owing to the 10 looseness and distortion in loops the surface of knitted work becomes rough. Even when special thick threads are used for knitting instead of doubled threads, the knitted work will be rough and hard, since the special thick thread also is 15' that consisting of ?bers doubled together with sericin, and it is impossible to make it so pliable, 10 while deriving silk ?laments ‘from cocoons, and it hasfor its object to reduce the cost of production by dispensing with the reeling operations re quired after the cohesion and ‘the preparatory operations required before the knitting process, 1 and also Ito make without the technical skill re quired'in known reeling processes superior silk knitting which has even loops and smooth sur' although it is subjected to soaking, and there face and also high-elongation'and strength and erations as'reeling, winding, doubling, twisting, fore the knitted work made of such threads is not even in fabric and the surface is rough rather than that made of'doubled threads, and thus the quality of knitted work is worse. In known methods, cocoon ?laments are de rived while the thread is reeled on a small reel at a high speed, so that it is dimcult to avoid 25 difference in ?neness being caused by snap of soaking, drying, cone winding, etc., and conse quently the cost of production of raw silk is in creased and a large quantity of waste is produced ?neness during the reeling operations, and thus, preserves the luster and taste characteristic to 20 the cocoons under treatment. Heretofore, it has been necessary, before feed ing silk threads to a knitting machine, to sub ject the threads to drying at a high temperature while the silk ?laments arev drawn from cocoons 25 softened in heated water, and also to such op 30 ?laments during the unravelling operations, and it is also di?icult to rectify the unevenness in although superior raw silk is used for knitting, 30 during said operations‘. Moreover, the friction, the defects owing to the unevenness in ?neness elongation and winding to which the threads are subjected _. during said operations, and handling of raw silk cause lowering of the strength and cannot be removed. of threads, and the drying of‘ threads at a high temperature during the reeling process results in _‘ ' . pensed with, and saididefects due to the twining of threads are removed and, moreover, the speed ‘ In the‘ present invention, however, threads hav ' ing the desired ?neness arederived ‘from cocoons 40 , necessary to reel the thread on the small reel after the cohesion and. the preparatory opera- 35 tions required before knitting can also be dis elongation considerably and also cause splitting making the threads brittle. 1 According to this invention, however, it is un softened in heated water in a filament unravelling device and caused ‘to cohere by suitable‘ means, at which knitting operations are performed, is as low as about one ?fth calculated on the speed at 40 which reeling operations are carriedv out in known methods, and therefore the technical skill re and then, while the threads still .contain a proper‘ quired hitherto in reeling process‘ is not_necessary amount of water well as sericin and are in a pliable ‘state, theyrare fed directly tova knitting machine, and thus‘ knitting operations, are car ried out on the one hand, and, ?laments" are de _ rived. fromv cocoons: on the other, thereby en abl'i'ng‘i onetp remove ‘saidjd'efects in known cases and to‘ make‘ excellent silk knitted 'work. - 'In-'_‘case rawsilkgthreads‘ aredoubled and used in this invention. vIt is also possible, in this in vention to ?nd broken‘ ?lamentsduring unravel ling operations and hencerto piece the ?laments together, thus preventing unevenness in ?neness. Furthermore, in this invention, the thread is sub jected to friction once‘in the cohesion appa ratus, that is,'the thread is not subjected to fric- 5° tion, winding, elong io'n' heating etc., in various - operations as inlkno of threads is lower ' the knitted work'.‘ ' ‘1 ,tionfisequiv'a'lentj " fesw-he'rein the quality "by;v considerably; thus rding'to this inven to» that made-of Sllk- 55 " 2 2,186,589 threads superior to the “special three _A” class. As already described, knitting operations can be carried out in this invention while the threads are still pliable so that the knitted work has normal loops which are even and smooth and high in elongation and strength, and thus this invention enables one to make at lower cost silk knitted work having the luster and taste characteristic 10 1. Process for making silk knitted work com prising the steps of deriving silk ?laments at a comparatively low speed from cocoons softened in heated water in a ?lament unravelling appa ratus, collecting and causing the ?laments to cohere into a thread having any desired ?neness, and feeding the raw silk thread, while still con taining a proper amount of water as well ‘as seri cin and being in a pliable state, to a knitting ma to the treated cocoons. It is also possible in this invention to feed to a ~ chine, the sericin being removed after knitting, 10 knitting machine, according to the kind of knit whereby one is able to carry out knitting opera ted work, the threads obtained by passing, after tions while deriving silk ?laments direct from co the cohesion, through emulsion so that the latter permeates between the filaments to cover each is ?lament with the ?lm so that the thread is fed to a knitting machine in a swelled and softened state, and therefore the knitted work made ac cording to this invention is softer than that made of doubled threads and pleasant to the touch. This invention can be carried out easily, using 20 coons. 2. Process for making silk knitted work com prising the steps of deriving silk ?laments at a 15 comparatively low speed from cocoons softened in heated water in a ?lament unravelling appa ratus, collecting and causing the ?laments to _ cohere into a thread having any desired ?neness, passing the thread through an emulsion so as to 20 circular knitting machines, French circular cover each ?lament with a film, and feeding the frames and machines for full fashion. raw silk thread, while still containing a proper Having now particularly described and ascer ' amount of water as well as sericin and being in a tained the nature of my said invention, and in pliable state, to a knitting machine, the sericin 25 what manner the-same is to be performed, I be being removed after knitting. 25 lieve that what I claim is: HISASHI KAKIZAKI.