US1023311A - Plating device. - Google Patents

Description

EQA. HIRNER.

PLATING DEVICE.

APPLICATION FILED FEBJQ, 1907.

Patented Apr. 16, 1912.

3 SHE'ETS-SHEET 2.

INVENTORZ EM/L l7. f/lfi/Vf h J 1 9 fl .3 4.. I E F F F u q K E. A. HIRNER.

PLATING DEVICE.

APPLICATION FILED FEB.15, 1907.

Patented Apr. 16, 1912.

3 SHEETS-SHEET 3.

' face of the fabric,

UNITE rarer.

ElVIIL A. I-IIRNER, OF ALLENTOIWN, PENNSYLVANIA.

PLATING DEVICE.

To all whom it may concern."

Be it known that 1,,E3IIL A. HIRNER, of Allentown, in the county of Lehigh and State of Pennsylvania, have invented certain new and useful Improvements in Plating Devices, whereof the following is a specification, reference being had to the accompanying drawings.

My invention relates to devices employed in circular knitting machines to perform the operation of plating, by which two yarns are simultaneously knitin the form of aweb .in such relation. to each other that one yarn (called the plating yarn) is visible upon the and the other yarn (called the body yarn) is visible upon the ba-ckcf the fabric.

In ordinary latch needle machines the proper performance of the operation of plating is effected by so feeding the two yarns to the needles that one lies above the other on the. hook of the needlegand maintaining this relation until the loop is cast off the needle. V arious devices have been designed for the purpose of thus accurately feeding two yarns simultaneously to the needles in proper relation to each other, but great difficulty has been experienced in employing these devices in reciprocatory knitting on circular machines, for where the yafns return upon themselves at the end of eachreciprocation, the alternationjof the tensions and positions of the yarns consequent upon the reversal of the motion has the efiect of disturbing the relation of the threads so as to often occasion a reversal of the threads during the plating operation, thus damaging the work.

My invention relates to means-which may be applied to the ordinary circular stocking knitter. By means of my invention, when the machine is reciprooated the yarnsare at 'with the maintenance all times accurately maintained and fed to the needles in their proper position for plating, notwithstanding variation in the number of needles in th fashioning set.

By the machine which I have described it is possible to knit a seamless stocking having heel and toe pockets fashioned by reciproc'atory knitting with employment of the same body and plating yarn used during the knitting of the other parts of the stocking and of one yarn visible upon the face and the other yarn visible upon the back of the fabric as uniformly during the parts of the work which are knit Specification of Letters Patent.

Application filed February 15, 1907.

superimposed upon Patented Apr. 16, 1912.

Serial No. 357,462.

by reciprocation of the machine as in those during which the machine is rotated.

For the accurate performance of the plating operation, I have found that it is desirable that the plating yarn which is to lie within the hook of the needle below the body yarn, should be fed to the needle from an eye well' in advance of the yarn guide through which the body yarn is being fed to the. needle. In this way the angle at which the yarns respectively pass to the needles varies, the obliquity of the ,plating yarn being greater than that of the body yarn. To accomplish this, I employ a separate guide for each yarn, the guide for the body yarn being stationary, andpreferably somewhat elongated, and the guide for the plating yarn being ayarn eye capable of receiving a reversed reciprocatory motion coincident with the change of motion of the knitting cylin; der, so that while the knitting cylinder is mtating in one direction, the yarn eye which carries the plating yarn is in advance of the yarn guide for the body yarn, but, immediately the motion of the knitting cylinder is reversed, the eye for the plating. yarn 'is thrown to the other side of the guide for the body yarn, so that during both directions in which the cylinder moves, the plating yarn eye is always in advance of the body yarn guide.

I will now describe my invention as applied to a stocking knitter, showing only such parts as are necessary for the roper comprehension of my invention, and with the understanding that 'the invention is not limited to any particular kind of knitting machine. i

In the accompanying drawings, Figure I, is an elevation of a rotating latch guard with its yarn guide and supports and other adjunctive parts, such as may be conveniently the knitting cylinders of any ordinary circular knitting machine. Fig..II, is an elevation of the same as seen at right anglesfrom'Fig. I; the upper part of the yarn post being removed, and a portion of the latch guard being broken away and shown in section. Fig. III, is a plan view of the same with the .yarn posts removed. Fig. IV, is a detailview of the slide-piece 66. Fig. V, is a detail view showing in plan sect-ion, the relation of the thread feeds to the needles. This section is indicated by the arrows V, V, in Fig. VI. Fig.

I VI, is a fragmentar development of the parts shown in Fig. during rotary-knitting. -Fig. VII, is a fragmentary sectional view indicated by the arrows VII, VII, in

Fig. VI. Fig. VIII, showsthe relative positions of the body and plating yarns at the completion of'the first course of reciprocatory'lmitting'. Fig. IX, is a sim lar view showing'these relations at the beg nning of the second reciprocatory course.

In'the figures, 1, is an annular seat which is supported above the knitting cylinders. 1 -With1n; this seat an annular plate 2, 1s re-i ceivedand' supported, rotating freely there in. The inner edgeof this-annular plate is:

. prolonged downwardly as a flange to form the latch guard '3, which as usual in such machinesi-smaintained in constant relation 'g'uiding'eyes as common in the art.

- ecti'ng from theyoke 5, isthe plate 15, containing two yarn eyes 16,.located, over the f a nnular disk- 2, in nearly vert1cal relation to" the j corresponding yarn eyes 17-, and 18,

1 to'the cam cylinder of the knitting machine.- 20 which' support'a'. yo e 5, the projecting extremities of which carry the bobbins 7, an 8. Mounted centrally upon the'yoke 5, 1s a Mounted upon the late 2, are posts 4, .4,

arm post 9, provided with successive colars 10, 11,12, and 13, all pierced by .arn

which are set in an arm 19, adjustably sup -'oi' t'e in an n right post- 35, mounted on idllle. ate 2.. T e post further supports the horizontal pins 37, and 38, the latter of iWhlCh carries the swingi through the ends of which "eyes 40,- are pierced. On the other side of the annular plate 2, is 'set a post'31, carrying the long,

yarn locks 39,

spring tension arms 30, with eyes 32, atthefir extremities which when pulled down are in arts thus shown and between-the yarn-eyes 16, and the yarn .eyes' iivice is shown and described in etters 1 at I ent of. the United States No. 911,656, issued to me under date of February 9th, 1909, but H -'-asthis'formsnoessential part of my pres-- fent inventiom-and as other devices may be employed, I .have not shown or described.

the samem this application.

' Beneath the yarn guidin members thus f ardes crihedflhe annular p ate 2, has a'slot';

- of: indefinite-size cut'within it and over fthis lies attached to the'plate-a small-sup- ;f. plemental; [plate 46, the exact position of which'in relation to'the plate 2, is capable of adjustment by the screw 47, The late 46, has two arn idinig eyes 48, an 49, the former o whic is nearer the axis of the machine than the latter. '1'

The latch guard 3, in the region wherethe yarn is fed to the needles is provided other'and set within a sad le tached to one end of the yoke 5.

with two apertures, the uppermost an elon gated horizontal slot 50, and the lowermost a yarn guide 51. The two are separated by a suitable interval, and the lower edge 52, of the latch guard is projected slightly downward to surround the yarn uide 51, as shown .in Figs. V, and VII, or reasons which will be explained later. Immediately behind the slotted" opening 50, is an oscillating yarn finger 54, which plays with-- in a circumferential slot 55, and whose lower end is curved, so as to project its terminal yarn eye 53, forward into the said opening as best seen in Fig. VII. This finger is adjustably attached to one arm 56, of a bell.

crank lever 57, which is pivoted to the bridge 58, and which unites the posts 4. The other arm 59, of this bell crank lever forms a yoke which grasps the rounded extremity of an arm 60, formed upon the collar 61, which surrounds one of the posts 4. Upon' theside opposite to this arm the collar 61,1'carries a vertical pin 62, the lower end o f 'which reaches. down through a slot 63, in the annular plate 2, and is at its lower end turned outwardly so as to be received between two lugs 65, 65, on the lower side of a slide piece 66, which runs with slight friction in a circular groove cut in the lower side of the seat 1; The inner opposing edges of these lugs 65,-.are beveled 1n relation to each otheras shownin Fig. IV. The col"- Zla'r 61, is also rovided with an upwardly extending arm 0, upon the side opposite to the arm 60. The collar is free to rotate upon the post 4,. but this rotation is limited in each directionby theaoontact of the, arm j 70, with the screws 72, o posed to each piece-73, at- The bobbin 7, carries the plating yarn which passes from'the bobbin up to an eye.

in the' collar 13,'thence down through eyesin. the collars 12, 11, and 10, to the' eye 16, from thence it passesto the eye 1?, through lathe e e in the yarn look, through the'eye 32, of t e spring tension, and thence down through the eye- 18, tothe eye '53, in the ex- 'tremity of the oscillating yarn finger 54,

from whence it isfed to the needles. The

bobbin 8, carries the body yarn, which pursues, a. similar course through the eyes in the I collars '13,-12,"1 1,' and 10, the plate 15, and

afterpassirilgr through the eye l8, land the eyes. in thqjgyaf'n lock and spring'tension passes to theeye49, and from thence is led tothe eye 51, .which constitutes the yarn "gulde for. the body yarn by which it is fed to the needles, 7

When the knitting machine is rotating for the production of tubular knitting the parts remain. in'jthe relation in which they are shownin Figs. I, to VI, of the drawings,

the yarn finger 54, being situated at the leading extremity of the slot 50, and feeding the plating yarn to the needle from an eye which leads the yarn guide 51; but upon the commencement of reciprocation a reversal of these parts takes place, for when the annular plate 2, starts its reversalthe collar 61, rocksas far as it is permitted to do so, by the movement of the pin 62, between the lugs 65, the extent of its mot-ion being limited as described. This motion of the arm occasions a corresponding throw of the arm 60, which is communicated to the bell crank lever 57, and therefore to the depending yarn finger which carriesthe platlng yarn, thus occasioning the immediate throwing of the finger to the other end of the slot 50, so thatimmediately upon each reversal of the reciprocating plate 2, this finger'is thrown to the leading or advancing end of the slot. Furthermore, the play of the finger across the slot 50, is sufliciently great to carry the yarn eye at each extremyarn guide reaches the end needle of the fashioning set of needles, where the-yarn ends the web, the body yarn is drawn to'the following end of the yarn guide, thus a separation between the yarns is effected, just at the most critical time, for it is along I the suture formed upon the alines of the fashioning needles that reversal of the yarns often accidentally takesplace. .By observing the position of the yarns in the ures, and especially in Figs. .V, VI, and I,'it will be observed that during thief-critical movementthe yarns are maintainedgwell separated, so that no' contact between them occurs, nor do they approach near enough for the projecting fuzz of the one to become entangled in the fuzz of the other, a cause which, frequently occasions reversal of the yarns.

It should be borne in mind that inmechanism of this type, the needle actuating I cams occupy approximately one-half of the inner periphery of. the cam cylinder, and

therefore to permit reversing diiringreciprocatory knitting, this portion of the cam cylinder must first bejrotated until all of its cams have'cleared the fashioning set. of needles. This, as is well known in the art, requires a complete revolution of the machine, for each reciprocatory course, no matter how small a number the fashioning set may be reduced to. It will be seen that the throwing of theyarn eye 53, to the other yarn, so that 'it is extremity of its oscillatory motion, occurs before actual-feeding of the yarn from its eye to the needles'takes place. In Figs. VIII, and IX, the first needle of the series which is idle during reciprocatory knitting, is designated by t-he numeral 80, and the first active or fashioning needle by 81. The shaded thread 82, represents the body yarn, and 83, the plating yarn. After the'completion of the first reciprocatory course,

'(Fig. VIII), continued rotation of the machine causes the threads to wrap themselves against the shanks of the needles of the idle series, until the full rotation of the machine 'is completed. As soon as rotation in the reverse direction takes place, the relative position of the thread feeds are changed, the

arms 30, maintaining the yarns taut at all times. Continued rotation of the machine causes the threads to be twisted about the first needle of the fashioning set, as shown in Fig. IX, without the slightest alternation of the relative position of the threads, that is with the body yarn always above the plating yarn, so that the plating yarn appears upon the face of the fabric during the selvage or suture, as well as during all other.

parts of the knitting operation.

Having thus claims 1. In a circular knitting machine, the ele ments of which-have capacity for both. ro-

describ (1 my invent ioI 1',"-"I- tary and reciprocatory. knitting,'- a yarn guide by-which. a body yarn is fed continuously to' the needles an oscillating yarn eye, the yarn feeding portion of which is so relate in position to the first mentioned yarn guide that at either extremity of its oscillation it. feeds'a platin yarn to the needles insuch relation to t e body yarn that said lating yarn lies on the shank of each need e immediately below the body l yarn; and means for so oscillating said yarn eye,-inrelation to the bodyyarn guide dur ing reciprocatoryfknitting as to cause'said yarn eye to always lead the yarn guide sufficiently to' compel the yarns to travel the needles at distinct angles.

2.'In a circular stocking knitter, a yarn guide by which a body yarn is fed coptim uously to the'needles; a yarn eye oscillat-ingin a horizontal lane above that of the yarn guide; means. or feeding a plating yarn through the oscillating gem eye to the needles; and means where ythe oscillation of said yarn'eye isso timed durin reci rocatory-knitting as to always fee needles/from a oint sufliciently in advance of the yarn gui e to throw the plating yarn 1125 onto the shank of the needle below the body knit into the face of the fabric. I

tote

3. In a'circularstooking knitter, a yarn guide for a body yarn; an oscillating finger; a second yarn eye for the plating yarn carried by 'said voscillating finger; means for causing said vfinger to oscillate above the yarn guide an equal distance from one side i of'it, tothe other, under control of vthe reciprocationof the needle cylinder, whereby at each'change of reciprocatlon said oscillat ing finger is thrown to the advance extremities of its range of motion.

In astocking knitter, means for simul-' taneousllyinfeeding two yarns to the needles forthe itting of plated fabric, in combi I nation with guiding. means for feeding said' yarns tothe ne'ed1es,'said guidingmeans for the plating yarn comprising a horizontally oscillating finger, and the guiding means 7 for the body yarn consisting of an eye situated below the plane in Which the finger oscillatesand centrally between the extremi-

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