US482892A - Automatic chain-motion for knitting-machines - Google Patents

Description

(No Model.) tsheets-sheen 14 D. C. BELLS. AUTOMATIC CHAIN MCTICN TCR KNITTING MACHINES. NC. 482,892. Patented Sept. 20, 1892.

S 3 l l5 y li iln ..1 ff] (No Model.) 4 Sheets-Sheet 2.

D. C. BELLIS. AUTOMATIC OHAIN MOTION FOR KNITTING MACHINES.

Patented sept. 2o, 1892.

4 Sheets-Sheet (No Model.)

` y Y D. C. BBLLIS. l AUTOMATIC CHAIN MOTION POR KNITTING MACHINES.

Patented Sept. 20, 1892.

(No Model.) 4 Sheets-Sheet 4.

' D. C. BELLIS.

` AULOSZL'IIG CHAIN MOTION POR KNITTING MAGHINES. No. 482,892. Patented Sept. 20, 1892.

UNTTED STATES PATENT OFFICE.

DAVID C. BELLS, OF ELIZABETH, NEW JERSEY.

AUTOMATIC CHAIN-MOTION FOR KNITTING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 482,892, dated September 20, 1892.

Application filed December 28,1891. Serial No. 416,285. (No model.) l

To all whom it may concern,.-

Be it known that I, DAVID C. BELLIS, a citizen of the United States, residing at Elizabeth in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Automatic Chain-Motions for Knitting-Machines, of which the following is a specification.

In the operation of most, if not all, of the many known types of knitting-machines it is customary to effect various changes or modilications in the character or form of the stitches comprising the finished web by shifting the needle-actuating cams and by shifting the dial-plate or horizontally-ranging needle-bed. The necessary adjustments for effecting the required movements of the needleactuating cams are usually accomplished by means of one or more positively-driven endless pattern-chains and a system of levers controlled by the movements of the pattern-chains and connected with the respective needle-actuating-cams through the intervention of camrings.

The principal objects of my present invention are, first, to provide simple, durable, and g comparatively inexpensive mechanism for imparting an intermittent feed motion to the pattern chain or chains of a knitting-machine; i

second, to regulate and'control the feed of the pattern chain or chains in such manner that comparatively short chains may be employed in the production of tucked or top-welted fabrics; third, to provide simple, durable, and efficient means for automatically raising or depressing the dial-plate or horizontally-ranging needle-bed in order to tighten or loosen the stitches of the web, and, fourth, to provide convenient means for adjusting the resiliency of the springs which tend to maintain the needle-actuating cams in normal position.

My invention consists of automatic chainmotions forknitting-machines, as hereinafter described and claimed.

The nature and characteristic features ot" my present invention will be more fully understood from the following description,taken in connection with the accompanying drawings, forming part hereof, and in which- Figure 1 is a top or plan View of an automatic chain-motion embodying features of my invention and showing also so much of an ordinary knitting-machine as is necessary to illustrate the application of the chain-motion thereto for the purpose of shifting the needle-actuating cams appertaining to the horizontal needles. Fig. 2 is a View partly in elevation and partly in section of Fig.1. Fig. 3Yis`aside elevation, drawn on an enlarged scale, of the automatic chain-motion illustrated at the left-hand side of Figs. 1 and 2. Fig. 4 is a top or plan view of Fig. 3. Fig. 5 is an elevation of the left-hand end of the chain-motion of Fig. 4E. Fig. 6 is a section taken on the line 6 6 of Fig. 3. Fig. 7 is a detail view of portions of the mechanism shown in Fig. 3 and illustrating an oscillat- `ing feed-dog and a cam-wheel for throwing the oscilating feed-dog out of action. Fig. 8 is a central section looking in the direction indicated by the arrows 8 in Fig. 9 and illustrating a chain-motion for knitting-machines embodying modifications of my invention. Fig. 9 is a top or plan view of the same. Fig. 10 is a central section looking in the direction indicated by the arrows 10 in Fig. 9. Fig. 11 is an elevation of the lefthand end of the chain-motion of Fig. 9. Fig. 12 is a section on the line 12 12 of Fig. 9. Fig. 13 is a section on the line 13 13 of Fig. 8, showing the cam-wheels and cam-wheel shaft removed in order to illustrate the finger and its accessories for throwing one of the feed-dogs out of action. Fig. 14 is a top or plan View of the stop-motion illustrated in Figs. S to 13, inclusive, showing the same provided with an additional or third pattern -chain and arranged for automatically shifting the dialplate of the horizontally-ranging needles and the needle-operating cams appertaining to both sets of needles. Fig. 15 is an elevation, partly in section, of Fig. 14, illustrating the mechanism interposed between the dial-spindle, the vertically-ranging needle-cams, and their respective pattern-chains. Fig. 16 is a detail view showing the dial-spindle and its accessories; and Fig. 17 is an end view looking toward the right in Fig. 14, showing the mechanism for shifting the vertical needleoperating cams.

Referring to the drawings and more especially to Figs. 1, 2, 14, and 15 thereof, ct represents a known type of knitting-machine provided with a positively-driven needle-cylinder o. and with cam-rings b and b', connected, respectively, with the needle-control- IOO , character ot' the stitchescomprising the iinished web.

a2 is a dial-plate or horizontally-rangingneedle-bed provided with an upwardly-projecting spindle a3, by means of which the horizontal needles may be shifted upward or downward, in order to loosen or tighten the stitches of the web.

a4 isa stitch-cam appertaining to the vertical needles and afforded a range of play in avertical direction in order to permit of the adjustment of the throw of the vertical needies to tighten or loosen the resultant stitches.

d is a tappet-arm, connected with the rotating needle-cylinder a and adapted toautomatically actuate the chain-motion ofthe machine.

Having hereinbefore 'briefly described as many of the parts of a well-known type of knitting-machine, to which a chain-motion embodying my invention is applicable, I will now proceed to describe theconstrnction and mode of operation of a chain-motion embodying features of my invention and afterward a modification thereof which is especially applicable to small knittingmachines--such,

`for example, as are usually employed in the production of stockings and socks.

4In the drawings, e is a framework or housing detachably connected with the main casing of the machine by means of screws and adapted to support certain parts of the chain motion. l

f` is a rocker-arm pivotally connected at one of its respective extremities to the framework or housing e by means of a shaft'e2 and having the free extremity thereof in range of the tappet-arm d and afforded a range of oscillation in a slot e3, so that every revolution of the needle-cylinder a causes the tappetarm d to shift the rocker-arm f upward and to permit it to return to its normal position by gravity. It will be observed that there is one operation of the rocker-arm f for every revolution of the needle-cylinder.

g and g are drums journaled to the main frame e by means of a shaft g2 and-provided with toothed or serrated working-faces g5 for positively engaging the respective links of the pattern chains `h and h. These patternchains h and h are constructed with one or more projecting links h3, asheretofore, but may be exceedingly short and still produce the required adjustments of the cam-rings, as will be hereinafter more fullyV explained.

t c' and '11 are chain-levers pivotally connected at one of the respective l extremities thereof with the framework e by means of the shaft e2. These chain-levers are respectively provided-with rollers Q? and 3,'a'dapted to bear upon 4the pattern-chains h and h', so that the passage of the projecting links h3 of the respective pattern-chains under the rollers i2 and i3 causes the chain-levers to be shifted away from the drums g and g.

s and s are helical springs supported in sleeves s2, carried by the main frame e and having one of their respective extremities in contact with the levers 1l audit" and having the other of their extremities in engagement with the points of the set-screws .s3 and s4 inserted into the rear portions of the sleeves. These springs s and s serve to maintain the levers in contact with the respective links of the chains h and h', and the set-screws' s3 and s4 afford convenient means for increasing or diminishing the force or resiliency of the springs s and s', and also for compensating for wear of the parts controlled thereby. j

j and j are links having oppositely-disposed threads upon the respective extremities thereof. The threaded extremities of these links are screwed into suitable sockets, pivotally connected with thelinks t' and c" and with the rings b and b', operating the needlecontrolling cams,\so that the throw of the links maybe readily increased or dimished in order to accommodate the chain-motion for attachment to knitting-machines of various sizes.

Referring now more especially to Figs. 1 to 7, inclusive, 7c is a toothed feed-wheel rotatably mounted upon the shaft g2 and rigidly connected with the chain-drums g and g', as shown in Fig. 6. Z is aspring-actuated feeddog, pivotally connected with the rocker-arm fand adapted to engage and slide over the respective teeth of the feed-Wheel 7c, in order to rotate the same with an intermittent motion in the direction indicated by the arrow a: in Fig. 7. m is a cam-wheel rotatably mounted upon acircular boss projecting from one of the faces of 'the rocker-arm fand connected with a ratchet-wheel n, mounted upon a boss on the other face of the rocker-arm f by means of the key-shaft o, as shown in Fig. 6. p is a spring-actuated pawl connected with the framework e and adapted to mesh with the respective teeth of the ratchet-wheel fn. in order to rotate the cam-wheel m in the direction indicated by the arrow in Fig. 7. q is a spring-metal gasket or washer interposed between the inner face of the ratchetwheel'n and the'rocker-arm f, in order to prevent accidental retrogade motion of the ratchet-wheel, due to the friction exerted by the spring-pawl p in sliding over the respective teeth of the ratchet-wheel n. The high surfaces or radial projections of the camwheel m are adapted to engage apin Z', projecting from one of the cheeks of the feeddog Z, and thus serve to shift the feed-dog Z out of range of the teeth of the feed-wheel c, in order to interrupt the advance or feed of the pattern-chains. fr is a latch pivotally connected with the framework eand adapted to engage the respective teeth ofthe feedwheel 7c, in order to lock the same and pre- IZO vent accidental retrograde motion thereof after each operation of the feed-dog Z. t is a bell-crank detent pivotally connected with the framework e and having one extremity thereof adapted to mesh with the respective teeth of a star-wheel u, rigidly connected with the feed-drums g and g, in order to limit the rotation of the feed-drums incident to each operation of the feed-dog Z. The other extremity of the detent t is in range of the point of a set-screw fw, extending through a lug formed upon the rocking armf, so that the oscillations of the rocking arm fV cause the set-screw w to engage the bell-crank lever and shift the same out of engagement with the respective teeth of the star-wheel u, in order to permit of the intermittent rotation of the feed-drums g and g'.

The mode of operation of the chain-motion mechanism hereinbefore described with reference to Figs. l to 7, inclusive,is as follows: Each revolution of the needle-cylinder a causes the tappet-arms CZ to oscillate the rocking arm f and the parts connected therewith. During the upward motion of the rocking arm j' the feed-dogZ tends to engage with one of the teeth of the feed-wheel k and to advance or rotate it, whereby the rotary motion of the feedwheel k is communicated to the chain-drums g and g', so that the latter are rotated in the direction indicated by the arrow m2 in Fig. 3.

The degree or extent of each of theintermittent motions of the chain-drums g and g isv are prevented from retrograding or running in a reverse direction by means of the latch r, which engages the respective teeth of the` feed-wheel, whereby the chain-drums g and g areppositively rotated with an absolutely regular or synchronous intermittent motion and are locked after the completion of each of their movements, the object being to feed the respective links comprising the chains h and h singly and accurately between the feed-drums g and g and the chain-levers t' and i', in order to shift the needle-controlling cams by the rings b and b into aposition for effecting the required changes in Vthe formation of the stitches comprising the fabric. If the feed-drums g and g are fed forward at each completel revolution of the cam-cylinder a', there must be as manylinks in the chains h and h as there are courses of knitting in the completed articles, so that the chains would in many instances be unduly long and cumbersome. In my invention the feed-dog Z is held out of range of the feed-wheel k during one or more consecutive revolutions of the needle-cylinder, so that the chains h and h are not fed forward during the formation of several courses of stitches, but only Whenever it is required to change the formation of the stitches. This result is attained by means of the cam-wheel m, which is intermittently rotated bythe ratchet-wheel n and springactuated pawl p at every downward motion of the rocking arm f, which occurs at every revolution of the needle-cylinder a', so that the high places or radial projections of the cainwheel m engage the pin Z', projecting from the feed-dog Z, and force it out of operative position during the downward stroke of the rocking arm fand maintain it in such position until the cam-wheel mis rotated into position for permitting the pin Z', projecting from the feed-dog Z, to enter a low place or recess in the cam, whereupon the feed-dog Z is again permitted to return to operative position.

The number of courses of stitches that are formed while the feed-dog Z is held out of action by the cam-wheel m may be varied, as required, and will depend upon the form of the working surface of the cam-wheel m. In the present instance the cam-wheel m is provided with one-half as many teeth as the ratchet-wheel n, so that the feed-dog Z operates the chain-drums g and g, and consequently feeds the pattern-chains forward a distance equal to the length of one of thelinks of the chains Zz and h once for every two operations of the rocking arm f--that is, once during the formation of every two consecutive courses of stitches. It maybe remarked that the chain-drums g and g are locked or held against accidental rotation while the feed-dog Z is out of action by means of the latch r and detent Z, so that accidental retrograde motion of the patternchain is impossible.

The construction and mode of operation of the modified chain-motion illustrated in Figs. 8 to 13, inclusive, are as above explained with reference to Figs. l to 7, inclusive, with the exception that two feed-wheels Zt and k2 are employed instead of one, One of these feedwheels 7c and the cam-wheel m are pinned or. otherwise connected together and are loosely mounted upon the shaft g2, and the feed-wheel 7a2, the two chain-drums g3 and g4, and the star-wheel u are all keyed or otherwise rigidly connected with said shaft. y is an auxiliary drum keyed to one extremity of the shaft g2 and adapted to feed or draw the camchain y forward one link at a time for a purpose to be presently fully described. Z2 and Z3 are spring-actuated feed-dogs pivotall y connected with the rocking armf and adapted, respectively, to "mesh with and operate the feed-wheels Zt and k2 once during the formation of each course of stitches. r is a latch pivotally connected with the framework e and adapted to engage the respective teeth of the feed-wheels Zt and k2. z, Fig. 13, is a rockshaft journaled in suitable bearings formed in the framework e and provided with a iinger z', adapted to engage a pin Z4, projecting IOO IIO

, the shaft z and having `one of its respective extremities in engagement with the framework e and having the other of its extremities in engagement with the finger z. This 'spring S5 serves to maintain the rock-shaft z audits accessories in operative position.

In use the cam-wheel mis rotated once duringtheformation of every courseof stitches through the instrumentality of the feed-dog Z2 and rocking lever. f, and the feed-dog Z3 tends to rotate the chain-drums g3 and g4, the star-wheel u', and the auxilary drum y in a similar manner. The rotationof the drums 'g3 and g4 in the manner above described causes the pattern-chains It and h to be fed forward, and the high links h3 of these chains cause the cam-rings to be shifted in the manner and for the purposes hereinabove set forth. However, lthe rotation of the chain-drums g3 and 'g4 may be prevented during the formation of 4any required number of rows of stitches by turning the rock-shaft z in such manner that the finger z lifts the feed-dog Z3 out of range of the teeth of the feed-wheel 7a2, and this 1notionof therock-shaft .zmay be accomplished in `either of two ways: first, bypermittingthe A roller z3 to travel upon one or more low links 'of the cam-chain y', and, second, by permit ting the pin projecting from the radial arm z2 to traverse a low surface or portion of the lcam-wheel m", it being understood that the high links yzand the high surfaces of the cam- Wheel m serve to oscillate the rock-shaft z inla reverse direction, thus permitting the fced-dog Z3 to return to operative or normal position.

methods of throwing the feed-dog Z3 out of -action'it is possible to produce a great number of changesin the character of the stitches s comprising the knitted web without the employment of long pattern-chains of any kind. .y

Moreover, the intervals during which the feeddogZs is in action vmay be increased or less` ened by increasing or diminishing the number of high or operative surfaces upon either the draw or cam-chain y or cam-wheels m', l

or both.

the automatic chain-motion above described plemental chain-lever i5 and a pattern-chain h4. This chain-lever 115 is provided with a link y2, adapted to operate the dial-plate a2, it being understood that in this instance the link By a 'combination `of these two;`

j is adapted to operate the stitclrcam a4, appertaining -to the vertically-ranging needles instead of the cam-rings. d5 is afyoke sup ported upon the bed-plate of the machine and provided with an arm a6. The upper extremity of the dial-spindle a3 is threaded and.

other causes the dial'plate a? to be shifted upward or downward, and thus loosens or tightens the stitches of the fabric. The nut a7 may be rotatedmanually by means of its milled periphery and automatically by means of a radially-projecting arm 0.8, connected with the link ,7'2 and operated thereby. The link jzis preferably connected with the arm as by means of a bolt a", having its shank adapted to work in a radially-rangingslot cut or otherwise formed in the arm as, so that the point of connection between the link and arm maybe shifted with reference to the nut a7, in order to permit of the regulation of the amount of rotary motion of the nut that occurs at each throw of the linkj2. 0.10 is a bracket supported by the bed-plate of the machine and provided with a perforated fork a11,in which a nut a12 is rotatably mounted. als is a swinging arm pivotally connected with the bracket alo and having its free extremity in engagement with the stitch-forming cam a4 appertaining to the verticallyranging needles. a is a threaded stem engaging the nut n.12 and provided with a jaw alengaging the lever als. The lower portion of the stem a, that slides upon the bracket am, is faced in order to prevent accidental rotation of the stem am. The rotation ofthe nut (1,12 in one direction or the other causes the stem a to shift the swinging arm a, and thus causes the elevation or depression of the stitch-cam a4 appertaining to the vertical needles, and consequently effects the required tightening or loosening of the stitches. The required rotary motion for effecting these results may be attained manually by means of the milled periphery of the vnut am and automatically by means 0f a radial arm al connected with the link j. The extremity of the link j and the radial arm al are preferably connected together by means of a boltadapted to be shifted and clamped i to place in a slot in the radial arm, in order Referring now to Figs. 14 to 17, inclusive,

to permit of the regulation of the amount of rotary motion imparted to the nut by each throw of the linkj.

It will be Aobvious to those skilled in the art tojwhioh my invention appertains that modifications may be made in details of con- IOO IIO

struction and arrangement without departt ing from the spirit of the invention. Hence I do not limit myself to the exact construc- .tion and arrangement of parts hereinabove' set forth and illustrated in the accompanying drawings.

Having thus described the nature and ob- Jects of my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. An automatic chain-motion for knittingmachines, provided with a pattern-chain drum having a feed-Wheel, a pattern-chain, arockerarm, a feed-dog carried by said arm, a camwheel mounted on said arm and adapted to .throw the feed-dog out of "action, and a pawl for imparting rotary motion to said camwheel, substantially as and for the purposes set forth.

2. An automatic chain-motion for knittingmachines, provided with a pattern-chain, a bracket connected with the main frame of the machine, a pattern-chain drum and complemental feed-wheel connected with the bracket, a rocker-arm provided with a feeddog and complemental cam-wheel, pawl-and- `ratchet connections between said cam-wheel and bracket, and means for actuating the rocker-arm, substantially as and for the purposes set forth.

.oscillation of the rocker-arm, substantially as and for the purposes set forth.

44E. In an automatic chain-motion for knitting-machines, a pattern-chain drum provided with a feed-wheel, a pattern-chain, a rockerarm, a feed-dog, and a positively-driven camwheel carried by the rocker-arm, substantially as and for the purposes set forth.

5. In an automatic chain-motion for knitting-machines, a pattern-chain, a patternchain drum provided with a feed-wheel, a rocker-arm, an oscillating springactuated feed-dog on said rocker-arm, and a positively- .driven cam-wheel carried by said arm and adapted to throw said feed-dog out of action, substantially as and for the purposes set forth.

6. In an automatic chain-motion for knitting-machines, a pattern-chain, a patternchain feed-wheel, a rocker-arm, a feed-dog carried by said arm and tending to engage the a radial arm, a cam-wheel engaging the radial arm,and an auxiliary feed-dog on the rockerarm for actuating said cam-wheel, substantially as and for the purposes set forth.

8. InY an automatic chain-motion for knitting-machines, a pattern-chain drum provided with a feed-wheel, a pattern-chain, a rockerarm provided with spring-actuated feed-dogs, a rock-shaft provided with a finger engaging vone of said feed-dogs, and a cam-wheel actuated bythe other of said dogs for controlling the rock-shaft, substantially as and for the purposes set forth.

9. An automatic chain-motion for knittingmachines,provided with a pattern-chain drum having a feed-wheel, a pattern-chain, a rocker-arm provided with a feed-dog for operating said drum, a rock-shaft provided with anger for throwing the feed-dog out of action, a radial arm on said rock-shaft, and a positivelydriven drum or cam-chain for controlling the radial arm, substantially as and for the purposes set forth.

l0. An automatic chain-motion for knitting-machines, provided with a tappet and complemental rocker-arm, a pattern-chain, a pattern-chain drum having a feed-wheel, a pattern-chain feed-dog on said rocker-arm, a rock-shaft having a radial arm, a finger pro` jecting from said shaft into range of the feeddog, a draw or cam chain for engaging said radial arm, and pawl-and-ratchet connections operated by said rocker-arm to feed said draw or cam chain, substantially asv and for the purposes set forth.

ll. In an automatic chain-motion for knitting-machines, a pattern-chain drum, a pattern-chain, a feed-dog adapted to operate a pattern-chain, a rock-shaft provided with two radial arms, a finger projecting from said rockshaft into range of said feed-dog, a drawchain engaging one of said radial arms, acam- Wheel engaging the other of saidradial arms, and means for feeding said cam-wheel and draw-chain, substantially as and for the-purposes set forth. Y

12. In an automatic chain-motion for knitting-machines, a rocking arm and its complemental tappet, a counter-shaft provided with a draw-chain drum, a draw-chain, patternchain drums keyed to said shaft and provided with star and feed wheels, a feed-wheel and a cam-Wheel connected together' and rotatably mounted on said shaft, a detent for engaging said star-Wheel, feed-pawls connected with the rocking arm for operating said feed- Wheels, a rock-shaft provided with two radial arms, respectively engaging the cam-wheel and draw-chain, and a finger projecting-from the rock-shaft into range of the chain-drum feed-dog7 substan tially as and for the-purposes set forth.

13. In an automatic chain-motionfor knitting-machines, a pattern-chain drum and its complemental feed mechanism', a star-wheel connected with said drum, a detent adapted TOO to engage" the star-wheel, and a rocking arm in range of said detent, substantially as and for the purposes set forth.

14. In an automatic chain-motion for knitting-machines, a pattern-chain drum and its complemental feed mechanism, a star-wheel connected with said drum, a rocking arm provided with a lug, and a bell-crank detent having one of its arms in range of the lug and the other arm adapted to engage the respective teeth of the star-wheel,substantially as and for the purposes set forth.

15. In an automatic chain-motion for knitting-machines, avpattern-chain drum and its complemental feed mechanism, a star-wheel connected with said drum, a detent adapted `to engage the respective teeth of the starwheel, a rocking arm, and a set-screw connected with the rocking arm and having its point in range of said detent, substantially as and for the purposes set forth.

16. In an automatic chain-motion for knitting-machines, a pattern-chain drum and its complemental feed-wheel, a star-wheel connected with said drum, a detent for engaging said star-wheel, and a rocking arm provided with a feed-dog and in range of said delent, substantially as and for the purposes set forth.

17. An automatic chain-motion for knitting-machines, provided with a pattern-chain, a chain-lever riding on said chain, a needlecam ring, a system of levers connected with the needle-cam ring and operated by said chain-lever, a spring working in a sleeve in the frame of the chain-motion mechanism and adapted to engage the chain-lever, and a setscrew mounted in, said sleeve and having the point thereof in engagement withsaid spring,

substantially as and for the purposes set forth.

18. An automatic chain-motion for knitting-machines, comprising a pattern-chain, a chain-drum having feed and star wheels, a rocking arm provided with a feed-dog, a detcnt in range of said rocking arm and engaging said star-Wheel, a latch engaging said star-wheel, means operated by said rocking arm for-throwing said dog out of action, a chain-lever contacting with the pattern-chain, and a link connected with the chain-lever and adapted to be connected with the cam-rin gs of a knitting-machine, substantially* as and for the purposes set forth. f

19. An automatic chain-motion for knitting-machines, provided with a pattern-chain and its complemental feed mechanism, a chain-lever operated by said chain, a rotatable nut engaging the dial-spindle of the knitting-machine and provided with a radial arm', and a link connected with said chain-lever and radial arm, substantially as and forthe purposes set forth.

20. An automatic chain-motion for knittin g1 machines, provided with a pattern-chainand its complemental feed mechanism, a rotatable nut engaging the dial-spindle of the knittingmachine and provided with a radial arm, and

a link pivoted to the chain-lever and adjustably connected with said'arm by means of a bolt engaging a slot in the arm, substantially as and for the purposes set forth. n

2l. An automatic chain-motion for knittlngmachines, provided with a pattern-chain and its complemental feed mechanism, a yoke provided with an arm and supported upon the bed of the knitting-machine, a nut rotatably mounted between said yoke and arm, a threaded dial-spindle afforded a range of endplay in apertures in said arm and yoke and engaging said nut, and means connected with said chain-lever for operating said nut, substantially as and for the purposes set forth.

22. A chain-motion for knitting-machlnes, provided with a rotatable nut engagingtlie dial-spindle of the machine, and connections between said nut and chain-motions, substantially as and for the purposes set forth.

23. An automatic chain-motion for knittingmachines, provided with a pattern-chain and its complemental feed mechanism, a chain-lever operated by said chain, a swinging arm 'engaging the vertically-ranging stitch-cam of the machine, a stem provided with a jaw engaging said swinging arm, a nut engaging said stem and provided with a radial arm, and a link connected with said chain-lever and radial arm, substantially as and for the purposes set forth.

24. An automatic chain-motion forknittingmachines, provided with a pattern-chain and its complemental feed mechanism,achainle ver operated by' said chain, a bracket provided with a fork and supported upon the bed of the machine, a swinging arm pivoted to said bracket and engaging the vertically-ranging stitch-cams of the machine, a stem afforded a range of end-play in apertures in the fork and having a iiatface in engagement with the bracket, a jaw on said stem for engaging the swinging arm, a nut rotatably mounted in said forkand engaging said stem, a radial arm on said nut, and a link connected with said radial arm and chain-lever, substantially as and for the purposes set forth.

25. Anautomatic chain-motion forknittingmachines, provided with a pattern-chain and its complemental feed mechanism,achainlever operated by said chain, a swinging arm engaging `the vertically-ranging stitch-cam of the machine, a stem provided with a jaw engaging said swinging arm, a nut engaging said stem and provided with a radial arm, and a link pivoted to the chain-lever and connected with the radial arm by a nut engaging a slot in the radial arm, substantially as and for the purposes set forth.

In witness whereof I have hereunto set my signature in the presence of two subscribing witnesses.

` VDAVID C. BELLIS. Witnesses:

` J. WALTER DoUGLAss,

THOMAS M. SMTTH.

IIO

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