US1240250A - Knitting-machine. - Google Patents

Description

H, PETERS.

KNJTTING moms. A

APPUCA'HON FILED JUNE 10, I915.

Patented Sept. 18, 1917,

4 $HEETS-SHEET 1.

Cl ic .Invemtor); MMW M 5 H. PZZEERS.

KNITTING MACHiNE.

APmcmon HLED sum 10; sens.

Patented Sept. 18, 1917.

4 SHEETS--SHEET 2' ea ttarme y'.

H. PETERS. KmTrmG MACHINE.

APPLICATION men was 10. l915: Patentedsept. 18,1917.

l SHEETS-SHEET 3.

In 06 1060 r:

mimm 21 a1 thorn/63.5

H. PEYERS.

KNITTING MACHENE- AFPUDATIGH HLED same 10, was

Patenied Sept. Hi, EH?

4 SHEETS SHEU' 4.

i machines. a.

I reinforcing yarn-across the plain or unremforeed parts ofqthe knitted fabric, and the 1 cutting away the surplus floating yarn hy Um ps ATEs PATENT OFFICE.

HERMAN rn'rnns, or MILWAUKEE. Wisconsin. ASSIGNOR TO HOLEI'ROOF HOSIERY "co., O QEI MILWAUKEE, WISCONSIN, A CORPORATION or WISCONSIN.

KN IT'lING-MACHINE Specification of Letters Patent.

Patented Sept. 18,1917.

To all .112 ham itmay. concern 130 it known that l, lli-f'nmw Versus, 21. eitizenoflhe United States, residing at Milwaukee, in the county-of Milwaukee and State. of iViseons-in, hare" invented certain new 1lllll-ll8(5flll* lnmrovements in Knitting- Marhines, of which the following is a specificalimn reference .heing had' to the accompanying drawing, forming-a part thereof.

This, invention relates-more particularly to circular-latch needle knitting machines and to mechanism "for reinforcin certain parts-of tubular knitting produced on such Its main objects-Fare to ar oid floating the trouhle and 'wast'eincidenbto trimming or hand or otherwise,aml generally to improve the eonstruction a'nd operation of machines of this class. I

It consists in the construction, arrangement and combination; parts. as hereinafter particularly described and pointed out in the claims.

In the accompanying drawing like characters designate, the same parts in the soveral figures.

Figure 1 is a sideelevation of a circular knitting machine cmhod i ing the invention; Fig. 2 is a plauiview'on alreularged seale of lhe knitting head of the machine; l lg. 3 IS an enlarged rear-elevation as Tie-wed from the lel t relative to'Fig. I; Fig. 4 is a detaehed detail. view of a tension rehasing' deviee eonstitutiugmpnrt of the invention; 'l ig. 5 is a vertical section on the line 5 4;, Fig. .5. of lhe upper part ol the machine; Fig. ii is a vertical section on the line F -(3, Fig. 2; and Figs. 7. a and 9 are. detarhod detail views of the inside eulliug. holding and guiding devices of the. reinforcing mechanisms. |igs. -T and fl being elevations as viewed l l'lllll the lower side of -l"i.'.". '1. showing lhe parts in dill'rrent pos liuns. and Fig. H lwiug'an elevation and partial seehnn as viewed l rnrn (he left relative in Fig.

The machine to \vlr'u-h the present inv ulion iapplied w'oluprises'm rotary needle. evliuder l. |n'r-.\hl('d avillra eirrular series of hilrli needles L. a laleh ring 2!. a sinker ring I. a needle emu ring and yarn carriers (3, 7, h and .I. pivoted roll a eruss pin 10 in an oilensiun on ne side of {he latch ring .l.

of this kind, by cams (not shown) on a. shaft 14, shown in Fig. 1, one of the lifting jacks or levers being shown in Fig. 6 in connecti n with the reinforcing yarn carrier 6. In t e "present machine the carrier 9 is employed to guide the main yarn which is knit continuously into the entire fabric, while the remaining carriers 7 and 8, or either of them, are or may be used for supplying one or more yarns either continuously or intermittently, to the needles, for various kinds of knitting.

As usual in macliines of this kind, the I lifting jack or lever 13, which coiiperates with the carricrG for the reinforcing yarn,

designated a on the drawing, has two actuating connections, one with acorn on the shaft 14, and the'other with a can (not shown) on the shaft 15, shown in Fig. 1, the latter can: serving to actuate the yarn carrier during the reinforcing operqtions of the niaehine. while the former cam serves to lift and hold llie carrier in a still higher position, indicated by dotted iines III Fig.v (3, while plain or unreinforeed portions of the fahrie are heing knit. I

The niael ne is provided as shown in 'l*igs. 2 and 5 with a tension device comprisin two disks or jaws 16,]wtween which the reinforcing yarn a. is led to the carrier 6, and which are yieldiugly pressed together hy a spring 17.

'lhe reinforcing yarn p'asses through and is direeled in proper position to the tension derive h v guides l-i and 19. i

The parts llue- I'a r deserihed are generally of lhe usual welllmownelmslruction and arrangement in circular knitting machines of the trpe' to which the present invention is applicable. In ronneelion with such parts the reinforeing 'nieeluinism constituting the invention omprises. as shown in Figs. 2, 5 T. H and 9. a rm-iprrmnliug slide 10. formed ul provided a! one end adjacent to the circular series f needles on [he inner side HQ thereof, with a downwardl directed hook, a cutter 21, cooperating wit 1 one side of the hook to sever the reinforcing yarn a near the point in the fabric from which it is withdrawn, and-a yielding clamp 22, cooperating with the other side of the hook to grip and hold the severed or detached and of the yarn when the carrier 6 is shifted upwardly out of working position, as shown by full lines in Fig. 6. This slide, cutter and clamp are mounted on a segmental plate 23, which is supported within the series of needles just above the needle cylinder 1, by an angular arm 24, which is fastened at one end to the rear side of the latch rin 3. The cutter blade 21 is adjustably amfdetachahly fastencd to the edge of the plate 23, or a section thereof, approximately 'arallel with and close to the series of need es on the opposite side of the hook slide 20 from, and a short distancein advance of the carrier 6 relative to the direction of rotation of the needle cylinder and needles as indicated by an arrow in Rig. 2.

As shown in Fig. 8, the clamp 22 is provided with a stem which is guided in a socket formed therefor in the plate 23 at right angles to th( hook slide 20, and a. spiral spring inserted in an enlar ement of said socket, presses and holds t e clamp yieldingly against said slide.

A reciprocating movement is imparted to the hook slide 20 during the reinforcing operation of the: machine by the following means:

A U-shaped lever fulcrumed on the plate 23 by a pin or bolt 25 passing vertically through a tubular connecting member of the lever and fastened at its lower end'in the plate, has two horizontally disposed arms 26 and 27, one above the other. i The arm 2-7 engages with 'a notch in the upper side of the hook slide 20. as indicated by dotted lines in Fi 2. The upper arm 26 is connected, as s own in Figs. 2 and 3, by a link 28 with the upper end of a vertically disposed lever 29, which is fulcrnmcd between its ends on the outer side of the latch ring 3. The lower end of the lever 25 is provided with a roller 30, arranged to cooperate with a cam 3i attached to and rotatable with the sinker lied surrounding the needle cylinder 1, below the sinker ring 4. A spring 32 coiled around the fulcrum hearing of the lever 29 and connected at one end with'saicl hearing and at the other end with an arm ll-l on the fulcrum pin or journal of the lever. tends to turn the lover arm 'ii'l out wardly and to hold the roller 30 in working relation to the cam 31. The inward more-- mcnt of the upper end of the lever 2! ioward the noodle cf 'lin lcr limited, and overthrow by momentum of the parts cor:- ncctod therewith is prevented by an adjust able stop 34, while the movement of said lever in the opposite direction is limited by an adjustable stop'35.

A bell crank'lever 86, fulcrumod on the plate 23, has one of its arms plvotally connected with a lateral extension of the lower lever arm 27, and its other arm, which extends outwardly betw the lever arms-26 and 27, formed or provi ed at the and with a downwardly directed 00k orprojection 37, serving as an inside' idc for the rainforcing yarno, and cooperatin with the carrier 6 to direct said yarn wi between the same two needles in successive revolutions of the needle cylinder when the carrier is lowered into wor position during the operation of the re amsm.

The hooked ide arm of the lever 86 is adapted to ate between the hook' slide 20 and a point dimctl opposite the yarn carrier 6, as shown in 2 and 6;

For separating the disks orjaws 16 of the tension device and relievin the reinforcing yarn a from tension win c it is being knit into the fabric, an angular lever 38,fulcrumed on one side of an overhanging arm 39 which carries the tension device, is adapted by engagement with the stem of the movable disk or jaw, to separate the disks or jawsin'oppoaition to thcspr' 17, when or shortly after the carrier 6 is lowered into working position. The shorter upwardly projecting armof this lever is provid with a laberallyprojecting angular extension 40, which is held by a retracto'rcing mech;

ing spring 41 inengagement with the heel,

or outer end of the carrier 6, as Fi s. 2 and a. l

o delay the separation oflthe jaws 16 and removal of tension on th 'reinforcin yarn a after the carrier 6 has n lowe into working position and un' ii the yarn adjacent to its detached end old by the clamp 22, is secured in the fab 'c by a number of stitches, the longer nrmof the lever 38 is jointed, as shown in Figs h and 4, n'nd its pivoted end section is a opted to yield upwardly against the tension 1 42, as shown in Fig. 4. 1

The spring 42 normally holds the sections of the ointed lover arm in alinement with each other, as shownin F'g. 3.

The link 28 is formed'or provided with an upward projection 43, which by enga ment with a laterally projecting pin or ii? 44 on the pivoted section of the lever 38, serves as a stop to limit the downward movement of said section and; prevent its shown in ongagnn'mnt with the stem of lhe movable jaw 16 until said projection 13 has been shifted with the link 28 outwardly far enough to release the pin or lap; 44, whereupon the spring 42 throws the pivoted section down into engagement with the movable jaw, as indicated by dotted lines in certainty ot a spring l Fig. 4, thereby separating it from the other jaw, the end of the stem being rounded and the side of the pivoted section rounded or beveled, as shown in Fig. 5, for this purpose.

When the reinforein mechanism operat ing on the yarn a is t rown out of action and the carrier 6 is shifted into and held in its uppermost position, indicated by the upper dotted lines in Fig. 6, by a cam on the shaft 14, as hereinbefore mentioned, the yarn is drawn by the rotary motion of the cylinder into engagement with an inside clamp. or holder, and is severed by a cutter (not shown) with which machines of this kind are ordinarily rovided for holding and severing yarns w iich are used in parts only of the entire fabric.

10 prevent the operation of the hook slide 20 and inside guide 37 by the cam 31 and to hold them out of the way in the p0si tions in which they are shown b full lines in F ig. 2, the machine is provide as shown in Figs. 2 and 3, with a spring-actuated hook or detent 45, which is ivotally mounted on the latch ring 3, and is adapted when released, to engage with the am 23 and lock and hold the lever 29 with the hook slide 20 and the guide 37 connected therewith, in the positions in which they are shown in Figs. 2 and. 3, and in which they are unaffected by the cam 31.

Thedetent is disengaged from the arm ilttwhen the reinforcing mechanism is to he brought into action, and is released to engage with said arm when said mechanism ,is' to be thrown out of action, by a ram 46 on the shaft 14, which engages with one end of a lever 47, as shown in Fig. 1. With" the opposite end of the lever 47 a rod 48 is pivotally connected. This rod, extending upwardly from said lever, is guided in the base of the knittin head or a part of the frame, and is provit ed at its upper end, as shown in Figs. 2 and 3, with a laterally projecting arm 4!), which is adapted by engagement. with a pin or lug 5U, projecting from one side of the detxant 1.7, to lift and hold said (latent out of engagnnu-nt with the arm 33 when the rod IR is moved upwardly. A spring 51, sur- 'I'onnding: the rod between the hase of the knitting lu-ad or part of the l'rnnu' in which thirod isguidrd and a. shoulder or washer on the rod. l lnls to lift and hold the lt'lt'lll Iii out ofrngagrnn-nt with lluarm :12; flhll lo lm'l'l th lvu'l' 17 in tngngt'nwnt. n ilh t'lu periphery of th ram I. :n; B loV-h in IU'L'. l ulnl i.

In tluopt-ration ol' llnnun'hino. whrn llH. ri-inl'or 'ln; nu-rhnnisni is hroughl into orlion. the rum on thishal'l l'l. \\'llitll nol'- mull hold. tluarrier 3 in its highest posii n. as n li 'ntvd hr the upper dotted lines i l t while llureinforcing mechanism is inactive, releases said carrier, whereupon the cam on the shaft 15 becomes effective to alternatelv lift and lower the carrier to' its middle lihsition, as shownliy full lines, and to its lowest position, as'indicatcd by the lower dotted lines in Fig. 6, through the medium of the lifting jack or lever 13, in the usual manner inztnnichine of this class.

At a certain point in the'rotation of the needle cylinder 1, the carrier 6 is shifted from its intermediate to its lowest position thereby carrying the yarn a down and with the aid of the inside guide 37 directing it between two needles, as indicated by dotted lines in Fig. 6. With the continued rota; tion of the needle cylinder the reinforcing yarn is knit with the main yarn into the fabric, in the usual manner, until at another point in; the rotation of the needle cylinder, determined by the shape of the cam on the shaft 15 which actuates thecarricr during the reinforcing operation of the machine, the carrier is lifted into its intermediate position, thercb withdrawing the yarn a upwardly out of range with the needles 2.

Before the carrier 6 is thus lifted to its intwmediat'e position, the cam 31, or the high part thereof, clears the roller 30 on the lower end of the lever 29, thus permittingnthe spring 32 to turn theuppcr end of sait lever outwardly against the back stop 35, and through the link 28 to turn the lever arms 26 and 27 outwardly. lhe hook slide 20 is thus thrust outward into the position shown in Fig. 7, and the inside guide 237 is turned forward toward said slide into the position indicated by dotted lines in Fig. 2.

As the fabric advances with the needle cylinder, it draws the yarn 0., from the elevated carrier .6. underneath and into the hight of the hook on the slide 20, and underm-nth tho hooitod end of the. guide 37, as shown in Fizz. 7. The rain ill is thereupon brought into engagement with the roller 30, and turns the upper end of the lower 2!) iu wardly into ongagcnu-nt with the front top Ill, thereby opt-rating (trough the. rod 23 and lover arms 26 and .27, to shift the hook slide 20 back to its former position. asshown in Figs. 2, S and fl, andto swing the guide V at hat-knard into position tlplltwllll' tlu- (:IIZ rior i. as v hown in Fig. 2.

'lho guidi- 517 moving ba kward to its again by the rotation" of the needle cylin er underneath the carrier and the earlier is lowered into wor position, as: indicated bhydottedlines in. i 6. As the yarn is {I u s draw-n'downwar between the needles y the carrier, it is withdrawn from the hooked end of-the guide 37, and is knit into the fabric, a few stitches being formed before the jaws 16 ofthe tension device are separated, as hereinbefore described, and the end of the yarn is released bythe hook slide 20 and the clamp 22.

Immediately following the lowering of the carrier 6 into working position, the cam 31 or the high part thereof, clears the roller 30, and the spring 32 turning the upper end of the lever 20 outward against the back stop 85, shifts the hook slide 20 outward into its receiving osition shown in Fig. 7, and turns the gui e 37 forward into the position indicated y dotted lines in Fig. 2, thereby releasing the end of the yarn a close to the fabric into which it is knit. The book of the slide 20 and the guide 37 are left in the positions in which they are shown in Fig. 7, to receive the reinforcing yarn a. when the carrier 6 is again lifted out of working position and the yarn is drawn forward with' the advancing fabric 'from the elevated carrier. g

' The foregoing operations are" automatically' re ated for a number of courses, controlled y the cam on the shaft 14 hereinbefore mentioned which determines the numbar and extent of the reinforced portionsof the fabric. and the intervals between them lengthwise. of the fabric until said cam lifts the carrier 6 to its highest osition as indicated by theup r dotted lines in Fig. 6.

When a raise or higher part of the cam 46 is brou ht into engagement with the lever 47, a littli: in advance of the elevation of the carrier 6 to its highest position; the rod 48 is drawn downwardly ugainst'the tension of the spring 51, thereby releasing the detent 45, which is thereupon turned by its spring into engagement with the arm 33, locking and holding the lever 29 with the slide 20 and guide 37 in the positions in which they are shown in Figs. 2 and 3, until they are again released by the disengagement of the detont 45 from the arm 33. when the lever '47 drops into a low part of the cam 46 immediately following the moyemcnt of the carrier (3 from its highest to its lowest p051 tion.

When the reinforcing mechanism is thrown outof action, as herembefore explained, by the cam on the shaft 14, which lifts the carrier 6 into its highest position, indicated by dotted lines in Fig. 6, and by the cam 46 which controls the operation of the hook slide 20 and guide 37, the rein forcing yarn a is carried forward with the fabric to, which it is attuchedxuutil it is caught by the inside holder and severed by the cutter hereinbefore mentioned.

Various changes in the construction and arrangement df parts constituting the reinforcing 'mechahism and of the parts of the machine cooperating therewith, may be made without departing from the principle and scope of the'invention as defined in the following claims.

I claim: 1. In a knitting machine the combination with a rotary needle cylinder provided with a circular series of latch needles, of u. yarn carrier movable into and out of position to direct a reinforcing yarn to the needles between prcdetcrmined points in successive courses, means for operating said carrier, a reciprocating hook movable transversely to the course of knitting within the series of needles and adapted when projected outwardly toward the needles to receive into its bight the yarn drawn by the fabric from the carrier as the carrier is shifted out of working position, a yielding clamp cooperating wit 1 one side of the book as it is withdrawn inwardly to first grip the yarn, and a stationary cutter cooperating with the other side of the hook to then sever the yarn between the clamp and the fabric.

2. In a knitting machine the combination with a rotary need lc cylinder rovided with a circular series of latch need es, of'a reinforcing yarn carrier, means for shiftin said carrier into and out of working position at predetermined points in successive courses of knitting, a reciprocating hook located within and movable transversely to the series of needles and adapted when projected outwardly toward the needles to receive into itsbight'the yarn drawn from the carrier by the rotation of thecylinder with the fabme as the carrier is shifted out of working position, a laterally yielding clamp coopersting with one side of the hook to first grip the yarn, a stationary cutter cooperating with thenther side of the hook to then sever the yarn close to the fabric, a reciprocating inside guide movable back and forth transversely to the movement of the hook and cooperating with the carrier when it is shifted mto working position to direct the yarn between the same needles in successive courses of knitting, and means for operating said hook and guide.

3. In a knittin machine the combination with a needle cylinder" provided with a series of needles, of a reinforcing yarn carrier, means for shifting said carrier into and out of working position at predetermined points in successive courses of knitting, a recipro eating hook located within and movable transversely to the series of needles and adapted when projected outwardly toward the needles to receive the yarn drawn ll' llll the carrier by the rotation of the fabric with the cylinder as the cam-ier is shifted out ol working position, a clamp cooperating with one side of the hook to lirst grip the yarn, a cutter cooperating with the other side of the hook to then sever the yarn close to the fabric, an inside guide movable into and out of position to eoiiperate with the carrier when it is shifted into working position, to direct the yarn between the same needles in successive courses of knitting, and means for operating said hook and guide.

4. In a knitting machine the combination with a rotary needle cylinder provided with a circular series of latch needles, of a reinforcing yarn carrier, means for shifting said carrier into and out of working position at predetermined points in successive courses of knitting, means within the series of needles for severing the yarn close to the fabric when it is withdrawn by the carrier from the needles and for holding the dctached end and returning the same to the needles when the carrier is shifted back to working position, a tension device comprisin}: two disks between which the yarn is constantly directed to the carrier, one of said disks being stationary and the other movable and provided with a stem which passes through and is guided axially in the stationary disk, a spring tending to press the movable disk toward the stationary disk, and a tension releasing lever adapted by ongagement with the end of the stem of the movable disk to separate said disks and remove tension from the reinforcing yarn when said carrier is shifted into working position.

5. In a knitting machine having a needle cylinder provided with a circular series of needles, a reinforcing yarn carrier, means for shifting said carrier into and out of position to direct a reinforcing yarn to the needles between predetermined points in successive courses of knitting, the combination of means within the series of needles for severing the yarn when it is withdrawn by the carrier from the needles and for holding the detached cnduntil the carrier is shifted into Working position, means for operating said severing and holding means. a tension device comprising separable jaws between which the yarn is led to the carrier, a backwardly yielding tension releasing arm' operated by said carrier to separate said jaws.

and a. movable stop actuated with the yarn severing and holding means and adapted by engagement with said releasing arm to delay the separation of the tension ]RWS when the carrier l2- shifted into working position until sulll holding means releasrs the yarn.

1. In a knitting machine the combination with a needle cylinder provided with needles. :1 yarn rarrier movable into and out of position to direct a rcinlorcing yarn to the needles between predetermined points in snrerssive courses of knitting and means for operating said carrier, of a reciprocating hook located inside of the series of needles, a roller roooperatiug with one side of the hook to sever said'yarn, a yielding clamp (-oi'merating with the other side of the hook to grasp and hold the detached end of the yarn. when the carrier is shifted out of working position, a hook operating connection, a tension device comprising separable jaws between which the yarn is led to the carrier, a lmckwardly yielding tension releasing arm operated with the. carrier to separate said jaws, and a stop on the hook operating connection adapted by engagement with said arm to delay the separation of the, 'aws when themarrier is shifted into working position until the hook is shifted to release the end of the yarn held thereby against the clamp.

7. In a knitting machine the combination with a rotary needle cylinder provided with a. circular series of latch needles, :1 yarn tarrier movable into and out of position to direct a reinforcing yarn to the needles between predetermined points in successive courses of knitting and means for operating said carrier, of a. reciprocating hook located within the series of needles adjacent to the carrier, a clamp eoiiperating with one side of the'hook to grip and hold the yarn when the carrier is shifted out of working position, a cutter cooperating with the other side of the hook to sever the yarn while it is held by the clamp, a cam connected and rotatahle with the needle cylinder for operating said hook in timed relation to the operation of the carrier, and a cam. adapted to prevent the operation of the hook by the first mentioned cam during the knitting of unreinforcedportions of the fabric.

8. In 'a knitting machine the combination with a rotary needle cylinder provided with a circular series of latch needles, a yarn carrier movable into and out of position to direct a reinforcing Turn to the needles between predetermined points in successive courses of knitting and means for operating said. carrier, of a reciprocating hook located inside of the series of needles, a yielding clamp coiiperating with one side of the hook to grip and hold the yarn when the carrier is shifted out of working position, a cutter co iperating with the other side of the hook to sever the yarn while it is held by the clamp close to the fabric, a lever connected with said hook, a cam connected and rotatable with the needle cylinder and adapted by engagenient with said lever to shift; said termined times in the operation U1 the nm- 10 book at predetermined points in successive chine. courses of knitting, aspring tending to hold In witness whereof I hereto ufiix my sigthe lever in engagement with the cam, a nature in presence of two witnesses. 5 detent adapted by engagement with the lever to prevent the operation of the book by the HERMAN PETERS. cam, and a releasing cam adapted to shift Witnesses: said .detent for rendering the reinforcing CHAS. L. Goss,

mechanism active and inactive at prede- H'murmcm' mums.

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