US2672722A - Serving machine - Google Patents

Description

March 23, 1954 L. SHULVER ETAL 2,672,722

SERVING MACHINE Filed Oct. 18. 1949 5 Sheets-Sheet l IN VEN TORS. Loujs ShulzJer a Kenneth Hflrn old i /MQ ATTORNEYS. V

March 23, 1954 L. SHULVER ET AL SERVING MACHINE 5 Sheets-Sheet 2 Filed Oct. 18, 1949 INVENTO 8S1! SERVING MACHINE 5 Sheets-Sheet 3 Filed Oct. 18, 1949 INVENTORY. L oajs Shulliez" a ATTURNEYS.

M r T954 L. SHULVER ET AL.

SERVING MACHINE 5 Sheets-Sheet 4 Filed Oct. 18, 1949 fizvejzl'azws: Loujs 5b ulvera Kenn el'lz fl qnnold March 1954 L. SHULVER E'EAL SERVING MACHINE 5 Sheets-Sheet 5 Filed Oct. 18. 1949 La 0212 1 01 -2; Louis Slaulzier a Keane flli arzz e ys.

Patented Mar. 23, 1954 SERVING MACHINE Louis shuiv r, Central F Arnold, Pawtucket, R. I

Braiding Machine Co mpany, Central Falls,

ails, and Kenneth H.

assignors to Wardwell R. L, a corporation of Maine Application October 18, 1949, Serial No. 121,988 4 Claims. (Cl. 5'7-15) This invention relates to an improved servnot be cut to replenish the strand-supply whereby the machine will cover maximum lengths of the wire or conductor continuously.

Another object is to. provide a machine of the type indicated having a main head carrying a plurality of strand-supplies and rotatable in one direction to closely wrap the strands around the supplies to insure a uniformly tight wrap of the strand material around the core. t Another object is to provide means for feeding the wire from a -supply reel through .the matherefrom to wind on another reel while traversing it lengthwise of the barrel of thelatter to insure a uniformdisposiwtion of the layersof winding t .Further objects of, the improvement are set forth in the following specification which describes a preferred embodiment of the invention, by way of example, as illustrated by the accompanying drawings. In thedrawings; Fig. 1 is a front elevational ,viewof themachine shown with the housings. for gears of the two heads insection, the arrangement of the drive; t. it

Fig. 2 is a top. plan view of the, main or lower head shown as carrying eight supply caps or ing the "Fig. 3 is an enlarged side view of the conicallydisposed brackets which support the guiding and tension devices for the strands, with its mounting on the axial spindle shown partly in section;

Fig. 4 is an enlarged top plan view of the upper head of the machine illustrated as carrying two strand supplies for the binder wraps and part sectiona1 to show the driving means therefor;

Fig. 515 an enlarged plan view for driving the main head;

Fig. 6 is an enlarged elevational view. of the change-gear driving mechanism for the upper head of the machine shown with its mounting;

of wagering belt driving connections between the main, shaft of the machine and the drive for the upper head;

Fig. 8 is a part-sectional elevational view of the upperhead showing the braking means for the packages, carried thereby; and

Fig. 9 is a view of the centrifugally-operated braking means for controlling the rotation of the supply packages on the main head of the machine. t V Heretofore, in machines for serving strand material onto elongate cores it has. been. the usual practice to mount several reserve packages of yarn or similar strand material above, the serving head with the core, such as a wire or the like, passing through the hollow centersof the packages. The strand materialis drawn. off from one package arranged be1ow,.wrapped about the core by guiding means in the form of a flier and as each delivering package is exhausted the machine is stopped and another package lowered onto the head enclosing the core so as not to out the wire. This arrangement limits the number cf-packages that can be placed in 1y notmore than two,

given length of wire. When the reserve supply packages of yarn are exhausted it is necessary to cutthe wire and apply a new series of packages to the machine with the wire passed through their interiors. This greatly reduces the lengthof wire that can be covered without cutting it and is a serious disadvantage since it-isdesirable to serve the wire continuously in long lengths ]to avoid multiple splices in the conductor. T To overcome thi deficiency in previously-used servers the present invention contemplates a novel and ingenious construction of the machine whereby the strand-supply packages may be car.- ried. in groups arranged concentrically surroundwire or other core feeding through the terial disposed circumferentially outside th core arranged in truncated pyramidal form so that a large number of the supplies may be revolved about the core. For some purposes a second auxiliary head is arranged above the main head to revolve a, lesser number of supply packages around the core, two for example, to deliver their strands to the core and wrap them around the initial serving in reverse direction to apply a binder for holding the first-served strands securely in place. two heads of the above arrangement the lower or main head is driven directly from power means to rotate at high speed and-the upper auxiliary binder-head may be driven therefrom at a slower rate of speed, preferably variable through the means of change-gears to regulate the pitch or lead of the binder strand or strands as required. Tension means ar provided for the several strands from each head so that the strands may and preferably be wrapped tightly about the core and in most instances braking means are employed to control the rotation of the spools or packages from wh ch the strands are delivered. Stopping mechanism may also be applied to the machine for arresting its operation should one or more strands become broken and also to stop the machine when the supplies run out.

Referring to the accompanying drawings, the present machine may be mounted on a stand having legs supported from the floor or, in other cases, it may be mounted on a bench or the like. As herein shown two horizontal cross-members 2 are supported from the legs andrising therefrom are columnar standard 3 and 4 forming a skeleton framework. be mounted in socketed brackets 5, only one of which is herein shown, bolted to two cross-members 2. A pair of rods 5 and 1 held in brackets 8 and 9 fastened to the columns 3 and 4 serve to brac the latter and also furnish a support for the upper head of the machine and its drivin'g mechanism to be described later. Mounted between the cross-members of the framework and supported therefrom is a main housing Ill containing the gearing for driving the lower head, indicated generally by the reference character 15, while the upper head is designated 16.

Th 'main head I5 is mounted on a hollow spindle l1 journaled in spaced ball-bearings in the housing 10, the housing serving as a reservoir for oil to lubricate the bearings and the gearing which drives the head. The housing I0 is formed at the bottom with a boss l9 counterbored to receive the outer race for the lower ball-bearing and a cover 2! screwed onto the top of the housing is formed with a boss 22 counterbored to provide a seat for the outer race 23 of the upper ball-bearing, this latter race being held in place by a' collar 24 fastenedto the boss 22 by a screw 25.

The hollow spindle I1 is formed with a shouldered seat 26 for the inner race 21 of the upper ball-bearing and between the races are suitable ballsj28 Beneath the upper bearing the spindle l'ljis' formed with a shouldered seat 29 for a heli When supplied with The standards 3 and 4 may i1 is in mesh cal gear 30 held rotatively therewith by a key 3|. A sleeve 32 secured fast on the reduced portion of the spindle l1 holds the gear 30 against the shoulder of its seat 29 and its lower end is reduced in diameter to provid a seat for the inner race 33 of the lower ball-bearing with balls 23 between the races. A packing washer 34 underlies the lower ball-bearing for preventing escape of th lubricant from the bottom of the housing ID. A flanged sleeve 35 is inserted through the reduced lower end of the bore in the boss 19 extending down through a depending neck 36 on the under side of the housing ID. The periphery of the sleeve 35 is screw-threaded to receive a nut 31 set up against the end of the neck 36 to secure the sleeve in place.

Below the nut 31 the sleeve 35 is reduced in diameter to receive a hollow member 38 fastened thereto by a set-screw 39. Th member 38 is flanged outwardly at its lower end in the manner of a trumpet to provide a re-entrant opening for receiving the core or wire w in threading it up through the tubular spindle l1, whence it emerges at the top to be served with the strand material. Within the lower end of the hollow spindle I1 is a quill-like tube 40 held fast in the sleeve 35 with its periphery spaced from the inner wall of the spindle to provide a clearance therebetween. The tube 40 is thus held against rotation and acts as a guide for the core or wire w to prevent it from being twisted or turned by frictional contact with the interior of the rotary spindle 11.

Referring to Fig. 5, the gear 30 on the spindle with a helical gear fast on a stub-shaft 46 journaled in a stationary bearing 41 supported from the bottom wall of the housing l0. At the opposite end of the stub-shaft 46 is a spur-gear 48 meshing with a gear 49 fast on the end of a main drive-shaft 50 to which power is applied for rotating the lower head 15. The shaft 50 is journaled in a bearing 5| held in a bore in the side of the housing l0 and extends outwardly through bearings in an overhanging bracket 52 bolted to the housing at 53, see Fig. l. The outer end of the shaft 50 carries a beltpulley 55 which may be connected to the shaft by means of a clutch, not herein shown or described in detail, through which the drive of the machine may be controlled. The drive for the upper head I6 of the machine is taken from the main shaft 50 through an arrangement of sprockets, chains and gearing to be described later. 7

The main head 15 is constructed in the form of a circular disk having a depending hub 6| surrounding the hollow spindle I1 and keyed thereto at 62. The supply packages P of yarn or other strand material are wound on paper tubes or cores mounted on tubular mandrels 63 supported at their ends by pintles 65 journaled in ball-bearings as shown in Fig. 4. This latter plan View shows the upper head 16 and its driving connections and the arrangement of the bearings for the packages is the same as on the lower head and therefore are described in connection with this view. Held in bores in the arms of each supporting bracket are hollow plugs 10 and 1| enclosing ball-races 12 for cooperation with races 13 on the pintles 55 with balls between the races. The pintles 65 have reduced spindles 15 provided with flanges 16 and forwardly-projecting heads 11 adapted for insertion into the ends of the hollow mandrels 63 on which the packages C are carried. The bearings for each end :of:':the mandrels 63- are of similar construction except that one plug TI and its pintle 65 are manually retractible in the supinto the opposite end of the mandrel; a locking pin 80 carrying a finger-knob 8I being first re= leased from engagement with the plug. The locking pin 80 is slidable axially through a bushing 82 in the end of the bracket arm and is-normally forced inwardly to engage its end with a slot 83 in the bearing plug H, by means of a helical spring 85 whereby to hold theplug locked with the mandrel 63 in engagement with the. head 11;on the pintle. The spring 85 is coiled around a reduced portion of bearing against a shoulder thereon and its oppo site end held against the end of the bore in the bushing 82 in which the pin slides. Theknob 8| is pinned to the reducedsstem of the locking pin80 to adapt it to bewithdrawn manually to release its end from the slot 83 so that the plug 11. may bewithdrawn by its knob 18 and the head 11 of the pintley65 released from the end of themandrel 63. I H Referring againto Fig. 1, each of the eight packages P on the head I5 is mounted in the manner above explained on rotary pintles journalled in ball-bearings in the bosses on the upright stanchions of the brackets 61. Each pair of brackets 61 is arranged to support two cops or packages P of strand material, see Figs. 1 and 2, with their axes extending horizontally and staggered in inclined relationship, the whole forming a truncated pyramid to conserve space and provide for mounting a large number of packages on the head I5.. The pairs of brackets 61 are arranged in spaced relation platform or disk 60 of the head I5 to support eight separate packages so that the strands therefrom will lead upwardly at an angle to the core. or wire 20 as it emerges from the top of the hollow spindle I 1 around which the head rotates.

The upper end of the spindle I1 is reduced in diameter to receive a cylindrical hub 90, see Fig. 3, which carries four radial arms 9I spaced equidistantly therearound and serving as a mounting for an equal number of angularly-positioned brackets 92. Referring particularly to Figs. 1 and 3, the brackets 92 support a series of spaced guides for directing the strands y from the lower head upwardly through tension-devices 93 to converge at the end of the spindle I1-ancl feed to the wire w to be wrapped therearound. At the lower end of each bracket 92 is a porcelain guide 94, spaced thereabove'are aseco'nd guide 95 and third'guidellfi with the tension-device 93 mountedbetween the last two mentioned guides. The tension-devices 93 may be of the usual disk-type as well known to those versed in the art to adapt the strands y to draw between the opposed faces ofthe disks which are pressed together by means of weights or springs, not herein shown in detail. Held in the upper end of the bore of the hub 90 is a cylindrical member 91 fastened in place by a set-screw 9t and formed with an upper beveled rim 99. The rim 99 is provided with a plurality of radially-projecting guide-pins I I around which the strands lead to hold them separated until they merge in-;-the wrapped covering onthe core or the pin 80 with one end wire 10. Held in the bore of the member .center to form guide-eyes H2 against the wire w as it feeds therethrough.

As shown in Fig. 9, two wire bails I I0 and II I may be provided on the head I5 projecting forwardly from eachbracket 61 and looped at the through which the strands y from the lower packages P lead to dimet them upwardly and prevent them from rubbingragain'stthe related packages in the upper group."

The upper auxiliary head I6 is organized in substantially the same manner as that of the lower head I5. A gear-casing or housing I is mounted on the pair of horizontal rods 6 and 1, previously mentioned, which extend through apertured lugs I 22 formed on its bottom, the rods I25 and I26 at the top and bottomre spectively of the housing I20 are ball-bearings I 21 for a tubular shaft I30 through which the core or wire w feeds upwardly. A quill-like tube I3I spaced from the interior of the shaft I30 is held in a flanged sleeve I32 fitted to the bore in the bottom of the housing I20 with a nut I33 screwed onto itslower end. A cup-shaped collar I-34 held on the reducedend of the sleeve I32 is provided with an axial aperture through which the wire feeds. Fast on the upper end of theshaft I30 is' a spider I35, see Fig. 4, for supporting the cops or packages 0 of the upper head I6, not more than two ofthese being usually employed for the binder strands. The lower hub I36 of the spider I extends downwardly through an aperture in a plate I31 which overlies the upper ball-bearing I21 and closes the counterbore in a cover or closure I38 fitted across the top of the housing I20. Above the spider I35 is a hub I39 surmounted by a nose-piece I40 fitted to its bore, see Fig. 8, and formed with a restricted bore terminating in an orifice through which the wire w feedsafter it has been served with the strands fromthe lower head I5. Porcelain guides I4I are mounted on'the spider I35 with other guides I42 supported thereabove on the hub I39, these guides serving to direct the strands y from the cops or packages C on the upper head I6 upwardly across the beveled end of the nose-piece I40.

It has been explained that the cops or packages C carried by the upper head "I6 are mounted on rotary 'arbors or mandrels 63 supported on pintles 65 journaled in ball-bearings and shown in Fig. 4% held in the arms I 43 and I 44 of the spider I35. The upper head'l 6'is driven in the opposite direction from that of the lower head I 5 by means of helical gearing shown in the plan View, Fig. l. A horizontal drive-shaft I45 is journaled in spaced bushings I 46 held in a bearing I48 formed integral with the gear-housing I20. A gear I50 on the inner end of the shaft I45 meshes with a gear I5I, see also Fig. l, which is secured fast on the hollow shaft I30 by a key I52. A collar I53 holds the gear I50 in place on the end of the shaft I45 and a second collar I55 abuts the outer end of the bearing I 98 to hold the shaft from axial movement in its bearing. I

Referring to Figs- 1 and 6, a bifurcated bracket I56 secured fast on" thestandardor column 4 by means of set-screws I51 projects outwardly therefrom to provide bearings for a gear-train shown in Fig. 6. The drive-shaft I65 for the upper head I6 is journaled at its outer end in a bearing I58 fastened to a seat on the bracket I56 by bolts I59. Keyed to the outer end of the shaft I45 abutting the end of the bearing I53 is a spur-gear I60 held in place by a collar I6I fastened by a set-screw I62. Below the gear I60 is a similar gear I63 mounted on the end of a stub-shaft I64 which is journaled in a bearing on the bracket I56 with collars I66 and I51, shown in Fig. l, holding these parts in place. In mesh with the two gears I66 and I63 is a change-gear I16 mounted on a headed bolt I1I which is adjustable in a slot I12 formed in a swinging arm I13. The bolt I1I is fastened in adjustable position along the slot I12 by means of a nut I14 which can be released to change the position of the bolt for accommodating change-gears of varying diameters. As a further means for adjusting the position of the bolt HI and gear I13 the arm I13 is pivotally mounted on the stub-shaft I64 to swing toward or away from the driving gear I66, a curved extension I of the arm I13 being formed with a slot I16 through which extends a stud I11 projecting from the bracket I56 with a nut I18 on its end for clamping the arm I13 in adjusted position. The stub-shaft I64 carries a sprocket-wheel I80 fast thereon, see Fig. l, the teeth of which engage with a chain IBI driven from the main driveshaft 50.

Referring to Fig. 7 the main drive-shaft 50 carries a sprocket I82 on its outer end connected by a chain I83 to a larger sprocket I84 fast on a stub-shaft I35. The shaft I85 is journaled in a bearing I66 supported at the rear of the main frame of the machine by the cross-member 2 extending between the legs I88. The shaft I65 also carries a smaller sprocket I90 with which the chain I8I engages to drive the upper sprocket I86 and gear-train, shown in Fig. 6, and thereby the shaft I which transmits rotation to the upper head I6. It has been explained that power the main drive-shaft by means is applied to of the pulley belted to a line-shaft or motor and through these last-described connections the two heads are rotated in opposite directions; the main head I5 being usually turned clockwise and the auxiliary head I6 counterclockwise, although the direction of each may be reversed by changing the arrangement of the gearing.

The core or wire w is drawn upwardly from the supply wound on a reel arranged below, fed through the hollow spindle I1 and as it emerges from the nose it is served with the strands y from the packages P on the main head I5. Thence the wire w passes through the upper head I6 and tubular shaft I30 to emerge from the nosepiece 645 where the first serving is bound in place by the strands y from the upper supply packages C. A grooved wheel or capstan IilI, shown fragmentarily in Fig. 1, receives the covered wire R which is coiled several times about its periphery and delivers it therefrom down to another take-up reel located at the side or rear of the machine. The capstan I9I is driven by a vertical shaft I92, see Fig. 1, suitably geared thereto and to the main drive-shaft 56, these connections not being herein shown. Suffice it to state that the arrangement of the last-mentioned wire feeding and delivering mechanisms of the machine is similar in most respects to that shown and described in United States Letters Patent No. 1,064,407, dated June 10, 1913,

for Braiding Machine and therefore not described herein. Stopping mechanism for the heads of. the machine may be employed, for example, of a form generally similar to that shown in United States Letters Patent No. 1,085,369, dated January 27, 1914, to be actuated by suitable drop-wires normally held suspended by the running strands.

In order to prevent the cops or packages of yarn from overrunning under the rapid draft of the strands therefrom it is preferable to employ braking means, for example, such as shown in Figs. 8 and 9. As illustrated in Fig. 8, flexible thin sheet-metal plates I held by collars I96, fast on studs I91 which support the threadguides on the upper head I6, are arranged to bear yieldingly against the peripheries of the upper cops or packages C during the unwinding of the strands therefrom. For the packages P carried by the lower or main head I5 there are provided pivoted brake-arms 266 and 251. The shorter arms 236 are pivotally mounted in bearings 262 on a plate 206 on the lower head I5 and formed at their upper ends with enlargements 253 having convex forward faces which bear against the peripheries of the packages P. The longer arms 2M are pivoted at their lower ends in bearings 264, also mounted on the plates 206, and formed with enlargements 265 at their upper ends with convex faces for contact with the peripheries of the packages P in the upper group or tier. These brake-arms are provided for the eight packages carried on the main head I5 and are caused to swing outwardly about their pivots under centrifugal force acting on their weighted upper ends as the head is rotated at a rapid rate, thereby causing the enlargements on the arms to press against the surface of the winding on the several packages to resist the rotation of the latter and control the unwinding of the strand material therefrom. Usually, the strands y are wound in multiple on the packages P and in. other instances spools of fine wire may be used to supply the wrapped covering. The construction and arrangement of the parts of the present improved serving machine having been described in detail its method of operation is explained briefly as follows:

The wire w or other core wound on a supply reel, not shown, is drawn off therefrom and threaded up through the hollow spindle I1 carrying the lower head I5, continued upwardly through the nose-piece at its end, threaded through the upper hollow spindle I36 to emerge from the upper nose-piece I46 and a few turns taken around the capstan ISI. Thence the wire is delivered to a take-up reel as the machine starts to operate and the capstan feeds the wire through the machine. The shaft 56 driven by the pulley 55 drives through the gearing in the housing I0 to rotate the hollow spindle I1 and the head 55 carried thereby. Meanwhile the strands y are drawn off from the supply packages P and fastened to the wire w by giving them a few turns therearound or otherwise attaching them as with adhesive tape. As the machine operates with the main head I5 turning in one direction to revolve the supplies P around the wire 10 or other core the strands y will be wrapped tightly therearound as tension is applied thereto by the tension-devices 93 previously described. The wire w feeds up through the hollow spindle I30 of the upper head I6 which is rotated in the opposite direction from that of the main head I5 whereby the strands y from the upper packor wire w being served. The Wire or other core may thus be served continuously in long lengths taken from a large supply reel and when it is required to replenish the supplies of strand material it is unnecessary to cut the wire. That is to say, the operation of the machine stopped and without cutting the wirefresh packages, or in some cases spools, carrying the new supply of strand material are placed on the heads by removing the mandrels 63 on which the first supplies are supported and replacing them in the bearings after thefreshsupplies have been ap plied thereto. It is a. simple matter to remove and replace the mandrels63 by withdrawing the lock-pins. 80 to permitthe plugs tobe re tracted for releasing thepintles from the ends of the mandrels. Then when the fresh packages have been placed engage in theirslots a so that the arbors or mandrels 63 will be securely held without chance of escape from their bearings to fly out from the heads during the rapid rotation of the latter. After the heads have been furnished with fresh supplies of strand material the machine may be started again to continue serving the covering on the core or conductor for the full length thereof. This is a most important result of the present improved construction of the machine in that for insulating electrical conductors it is undesirable to cut the wire in relatively short lengths as it then becomes necessary to splice the ends together and repair the insulation at the splices. Usually, electrical conductors served with yarn, glass-fiber or similar strand material require another covering of rubber, plastic, or in some cases, a braided jacket which may be treated to render it weather-proof.

It will be observed from the foregoing specification that the present invention provides an improved sewing machine adapted for covering cores such as electrical conductors with closelywrapped strands of various kinds of material, with binder strands laid over the first wrap if without necessitat ng cutting the lengths and splicing the ends together. While the invention is herein shown as embodied in a preferred form of construction, it is to be understood that modifications may be made in the structure and arrangement of the parts of the machine without departing from the spirit or scope of the invention as expressed in the accompanying claims. Therefore, without limiting ourselves in this respect, we claim:

1. In a serving machine, a hollow spindle, spaced bearings for supporting said spindle to rotate about a vertical axis, a main head mounted on said spindle to rotate therewith, means for supporting a plurality of strand-packages on said head with their axes extending horizontally spindle to be wrapped around a core feeding spindle, a second spindle arranged in alinement through the packages on said main carried by the auxiliary head with their axes extending horizontally, A means tonguide the strands from the supplieslontheiauxiliary head to converge at the end of the second spindle and be driving the first-named spindle to rotate the main head, change-gearing for driving the second spindle to rotate the auxiliary head, and for the two heads in opposite variable ratio of speed.

2. In a serving machine, a gear-housing, a hollow spindle journaled in bearings in said second housing for rotation about a vertical axis, an auxiliary head carried by, the second spindle, means 'for supporting a plurality of strand su'phead with their axes dismeans for feeding a core axially through both spindles, means for guiding the strands from the supplies on the auxiliary head to cause them to converge beyond the end of its spindle and be wrapped around the firstserved strands to bind them in place, gearing in the housings for rotating the heads, and. means for driving the gearing in both housings from a source of power.

3. In a serving machine, a hollow spindle, means for feeding a core axially through said hollow spindle, bearings for journaling said spindle to rotate about a vertical axis, a main head mounted on said spindle to rotate therewith, means for supporting a plurality of strandhead, means to guide the strands from said strand-packages to converge at the upper end of the spindle, a drive-shaft, gearing connecting said drive-shaft to rotate the spindle and drive the main head, a second hollow spindle arranged above and in spaced relation to the first spindle, bearings for journaling the second spindle to rotate about a vertical axis in line with the axis of the first-named spindle, an auxiliary head mounted on said second spindle, a plurality of strand-packages carried by the auxiliary head, means to guide the strands from the strandpackages on the auxiliary head to converge at the end of the second spindle for wrapping them around the first-served strands on the core feeding through said second spindle to bind said first-served strands in place, gearing for driving the second spindle, and means to connect said gearing with the drive-shaft to rotate the auxiliary head in the opposite direction from that of the main head.

4. In a serving machine, a hollow spindle, bearings for supporting said spindle to rotate about a vertical axis, a main head mounted on said spindle to rotate therewith, a horizontal drive-shaft, gearing connecting said drive-shaft to rotate the spindle, means for supporting a plurality of strand-packages on said for guiding the strands from said packages to converge beyond the end of the spindle for wrapping them around a core feeding through the 11 hollow spindle, a plurality of tension-devices for tensioning the strands leading from the several packages to .the core beyond the upper end of the spindle, a'second spindle arranged above and in spaced relation to the first spindle, for mounting the second spindle to rotate about a vertical axis, an auxiliary head mounted on the second spindle for rotation therewith, a plurality of strand-packages carried by said auxil' iary head, guiding means for leading the strands from the packages on the auxiliary head to converge at the upper end of the second spindle for wrapping them around the first-served strands on the core, change-gearing for driving the second spindle to rotate the auxiliary head, and means for connecting the drive-shaft to said change-gearing for the auxiliary head to rotate the auxiliary head in the opposite direction from that of the main head with a variable speedratio therebetween.

LOUIS SHULVER. KENNETH H. ARNOLD.

References Cited. in the file of this patent Number Number 12 Name Date Frederick Feb. 18, 1902 Tobey Nov. 11, 1913 Chamberlain Jan. 27 1920 Bradt Mar. 28, 1922 I-Ioovens July 8, 1924 Koella Dec. 2, 1924 Frederickson Apr. 9, 1929 Morin Aug. 5, 1930 McKnight Mar. 31, 1931 Van Hook Dec. 15, 1931 Zettek June 21, 1932 Frank Nov. 15, 1932 Angell et al Nov. 7, 1933 Petterson June 11, 1935 Johnson et a1 Mar. 22, 1938 Ford et a1 Nov. 19, 1940 Robinson et al. Apr. 28, 1942 Reardon et al May 25, 1943 FOREIGN PATENTS Country Date France Dec. 1, 1874

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