US1278634A - Knitting-machine. - Google Patents

Description

.|. H. GLENN.

-KN|TTING MACHINE.

APPLICATION FILED Nov. s. 1914.

l,27,34; Patented Sept. 10, 1918.

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KNITTING MACHINE. APPLICATION man Nov.e.19}4.

Patented Sept. 10, 1918:

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J. H. GkENN.

KNITTING MACHINE.

IIIIIIIIIIIII LED NOV. 6, 1914. v 1,278,634. Patented Sept. 10,1918.

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A u' il( I OF PHILADELPHI-, PENNSYLVANIA, ASSIGNQB 'EQ is- 0F PHILADELPHIA,YPENNSYLV i i KNITTING-MACHINE.

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Application led November 6, 1914. Serial No. 870,703.

To all 'whom it 'may concern." cylinder B carries the usual cams for verti- Be it known that l, JAMES H. GLENN, a cally rec'procating the needles for the procitizen o the United States, residing at duction of the stitches. ln the present in- Philadelphia, in the county of Philadelphia stance, two sets of 'needles are carried by the and State of Pennsylvania, have invented needle cylinder, and twov sets of knitting to new and useful improvements in Knittin cams are carried by the cam cylinder for ac- Machines, of which the ollowing isa speciiltion upon the respective sets of needles, the cation. butts of the respective. sets of needles and My invention relates to certain new and the respective sets of cams designed to act lo useful improvements in hitting machines thereon being arranged in diderent hori- 65 and particularly to knitting machines of zontal planes. rl`his arrangement is necesthat character employed in the productionk sary in knitting heels, but is not essentia of stockings and similar articles. otherwise, and is therefore merely referred One object of the invention is to provide toI in order that the illustration may be fully i5 a knitting machine especially adapted for and clearly understood. l

producing elastic stocking tops. The needles of each set, suchas the needles Another object is to provide a knitting D and E, are arranged in alternation with machine embodying a novel construction each other, and.L these needles are respecand organization of needles and controlling tively provided with short butts d and long 2o cams for the aforesaid purpose. butts c, while each setoi cams 'F and F 75 Still another object is to provide a conupon the cam ring B are disposed to act struction whereby complete stockings, in` upon the butts of the. respective needles, cluding -my improved elastic tops, may be whereby the needle s are reciprocated in the made upon one and the same machine and by knitting action. a continuous operation. As shown, each set of cams comprises cam S0 The invention consists of the features of members l, 2, 3, 4, 5 and 6, which may be o construction, combination and arrangement ordinary construction and coniorm'to the of parts herein fully described and claimed', usual arrangement of knitting cams. For reference being. had to the accompanying use in conjunction with these cams l pros0 drawings in which vide additional cams 7 and 8, the cam 7 be-- g5 Figure 'l is a vertical section through a ing arranged for cooperation with the cam 1 circular hitting machine. constructed inl acand the cam 8 for coperation with the cams cordance with my invention. 5 and 6. The cam 7 is of less extent of pro- Fig. 2 is a horizontal transverse section ci nection from the cylinder than the remainthe same. ing cams, and forms with the adjacent sur; 90

Fig. 3 is a diagrammatic view of one of faces of the cam members l and. 2 a guidethe cam rings and cams thereon, illustratway 9, while the cam 8 consists of two in in dotted lines the action of the needles. spaced mem ers l() and 11, the member 10 igs. 4 and 5 are perspective views of cerforming with the members 4 and 5 an uptain cams. wardly inclined guideway l2, while lsaid @5 Fig. 6 is an outer side or iront tace view members 10 and 11' form a downwardly 1no a-portion of the fabric. clined guideway 13. The cams 7 and 8 are Fig. 'l' is a transverse section on the line constructed in practice sc as to'be thrown 7-7-oi Fig. 6. into and out of operation as desired, in or- Fig. 8 is a rear or inner face viewo a der that the machine may operate in the 10@ portion of the fabric. usual way to knit the body of the stocking The machine .is-in general of ordinary after the improved elastic top Qhas been construction and includes a bed plate A, knitted. The direction oi .revolution of the upon which is rotatably mounted the cam cam cylinder is indicated by the arrows m cylinder B within which is arranged the Figs. 2 and 3, while 1n F1g. 3 there. 1s also 4 needle c linder C. The cylinder C is prodiagrammatically indicated 1n dotted lines vided with the usual vertical groovesl into the actions of the short and long butt needles which are fitted sets of needles D and E and in the control of the same by the cams. D' and E which are of usual construction, Yarn feeding devices are shown convenexcept as hereinafter specied. The cam tonally at 20 and 21 mhig. 3. 110

' are formed. The

. from the long v done on an ord terlocked togeth In the operation of the machine .the butts of the needles are brou p of the cams, and at all tlmes from beginning to end in the production of any piece of knit goods each needle carries at least one loo or thread of the fabric. The-complete cyc e of movement for each needle is to rise high enough to cast its loop over the tail end of the latch, permitting the loop to fall on t-he shank or loop part of the needle, after which the needle descends, causing the loop to close the latch over the stitch which has Just been taken into the hook, and releasing the pre- .vious loop from the end of the needle hook which is now protected by the closed latch. In this Way successive chains of stitches primary characteristic of the machine of the present improved knitting mechanism resides in the fact that every alternate needle moves through two cycles while the remainingl needles are performing one. In order to effect this, the cam members 7 and 8 are provided, and which act upon part of the needles only, the short butt needles vhaving a different knitting action butt needles, Sas hereinafter fully explained.

The improved knitting mechanism is designed principally for producing the ribbed tops of stockings, in such a manner as to secure a top of maximum strength, durability, and, as a matter of elasticity, and also to enable this work to be inary knitting machine, upon which both the bodies and tops of stockings may be produced. In the production of the ribbed elastic stocking top, two kinds of yarn are used, a coarse yarn g and a finer or tension-yarn it. The coarse yarn is alternately acted upon by the needles E and D to produce loose, -long loops and closer or tighter 'alternate short loops, and to interlock the shorter loops of radjacent courses of the coarse yarn by loops of the fine yarn, which hold the short loops of the coarse yarn under tension. In Figs. 6 land 8 G designates a portion of a stocking top, and I the portion of the stocking body with which it is connected. .During the action of the machine in ,knitting the ribbed elastic top G all of the cam devices, including the cams 7 and 8, are in use, while ofthe stocking the cams 7 and 8 are thrown out of action, whereupon the cam mechanism operates in the usual way to knit the body om the coarser yarn, the loops of the courses being,l as ordinarily, of substantially thel same dimensions and directly iner. v y

By reference to Fi 3, it will be understood that the butts 5 of all the short butt needles D-will Apass the cam surface. Aand lower portion without touching the same or being influenced thereby, Whereas the needles E having ght within the paths p ducing a loop in the coarse prime lmportance, y

in knitting the remainder` l cam 3, 'ittakes up the fine yarn of the member 11 ofthe cam8 down overy the the longer butts e will be depressed by said cam. At the beginning of each new stocking top, the short butt needles and the long butt needles are both in engagement with the heavy weight yarn, and it will be seen by reference to Fig. 3 that the Acam members 1, 2 and 7 will be the rst to act on the needles. The needles D having the short butts al will pass directly across the faceof the cam 7 and first engage the cam 2, While the needles E having the longer butts e will strike the cam 7, and be forced downward for travel alon the inclined groove 12 formed between and y the aforesaid cam members. In the rotation of the cam cylinder each needle D will lirst be elevated by the cam 2, then pass into engagement with the cam 3 and be depressed-thereby, then move over into engagement with and be depressed by the cam 4,

.then be elevated by the cams 5 and 10, and

linally depressed by the cam 11 and travel in the groove 13, when it will pass out ofengagement with said cam and move into engagement with the upper portion of the cam 6, at which time its succeeding cycle will begin. Each'needle D will thus be reciprocated twice on each working cycle, for proyarn and also a loop in the fine yarn. In the cycle of each long butt needle the butt of the needle will engage the cam and said needle will pass downward below the knitting plane through the groove 9, thence cross from the cam l to the cam 5 and travel upward through the groove 12'and 'finally downward through the groove 13,and then upward along the cam 6 to the starting position, whereby each long butt needle will be reciprocated once on reach cycle of motion to form a loop in the coarse yarn. The dotted line w indicates the cycle vof action of the short butt needles and the action of the cams thereon, and the dotted line j/ indicates the cycle of action of the long butt needles', Each coarse yarn g Will thus be formed with long loops g and short loops g2 alternating therewith, the loops g being formed by the lon butt needles and the loops g2 by the short utt needles, while each tine yarnlzl will be formed with loops k beltwee'n the long loops g of the yarn g, w g2 of adjacent courses to this aforesaid cyc needle moves upward loop Aon the needle is passed downward at the l)point and 'cast over the latch on the sha As the needle l.descends along the` and on its further descent along the cam 4' e yarn downward and slips yarn over the ofthe needle.

. On the ensuing needle along thecam 5, the ne yarn sli ether.

8 Coarse upwardmovement of the i open latch on to the Sha 2 v ich loops engage" and interlock the loops e of action, each over cam 2 and the ulJs then 12s closed latch at the hook end j and with the nal descent of the needle threads and `binder loops h' of the lne along the cam 11, the coarse yarn is again threads through the action of the short butt taken on and the i'ine is cast off over the needles, in making two stitches during the relosed latch and the hook end of the needle. action of a long butt needle in making a This leaves the coarse yarn in the hook to single and looser stitch, by which the rows begin the next cycle. At the beginning of of long stitches are' drawn together and prothe cycle of each long butt needle it holds jected forward while the rows of short the coarse yarn first during its descent stitches are pulled backward, the resultant through the passage 9. lt then rises along fabric being ribbed on its outer surface and i0 cam 5 and casts its stitch at the top of passubstantially smooth on its inner surface.

. sage 13 as the short butt 'needles do, and This construction or method of knitting may on next descending through said passage 13 not only be carried out in the manner dethe long butt needles take up the coarse yarn scribed on an ordinary knitting machine by and carry it up'cam 6 to the beginningof modifying the needles and cam mechanism 15 the neXt cycle. lt'will thus be evident that in accordance with my invention, but the the long butt needles carry only the coarse ribbed top of the resultant product coin-v yarn and vmake but a single stitch in each bines a high degree of elasticity with great cycle, while the short butt needles make two strength, due to the fact 'that distention is stitches in each cycle and alternately carry permitted by the co e loops on the finer the coarse and fine yarns. The lineyarn is loops, the degree of lasticity being confined held at a greater tension than the coarse within proper lim ts by the high tension yarn. small loops of the cv rse threads and the Eine Fig. 6 of the drawing shows a section of threads. the fabric from the outer or face side, dis- I claim a closing particularly the mode in which the Tn a device for knitting accordion fabric, elastic ribbed top is interwoven between the a series of long butt needles, a series of short body of the stocking to which it is attached butt needles, a cam ring for controlling the and the nal course of the toe of the preneedles, said ring including in succession a ceding stocking. Tt will be seen from this needle depressing cani adapted to engage the that the coarse yarnis woven loosely on the long butt needles to the exclusion of the long butt needles, which form the long loops, needles of the other series, a stitch cain actand that the alternate stitches or loopsare ing on the short butt needles, a sectional Woven much more tightly. Tt will also be needle elevating cam, a depressing cam an seen that the fine or high tension yarn passes another elevating cam, each acting on a :55 back of the heavier and' looser stitches the needles, the upper portion of the secf formed by the long butt needles, thus forc'- tional cam and the second depressing cam ing the rows of long loops, to the front being mounted 0n acommon support for adwhile the` intermediate stitches foi-med by `justinent radially of the cam ring.

the short loops of the coarseyarn and loops In testimony whereof l affix my signature 40 of the fine yarn being under greater tension, in presence of two witnesses.

are pulled toward the back or inside of the JS H. GLENN stocking, thus forming the alternate ribs of Witnesses: v the fabric. This structure is secured by 'HELEN G. D,

weaving the short loops g2 of the coarse v NoN J. SMITH,

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