US1671951A - Strand twisting and coiling mechanism - Google Patents

Description

May 29, 1928;

Filed Aug, '7, A1924 R C ANGELL YSTRAND TwIsTING AND coILING MEcHANIsu,

May 29, 192s. 1,671,951

R. c. ANGELI.

STRAND TwIsTING 'Ann comme 111191111111911 Filed Aug. 7.- 1924 4 'sheets-Sheet 2 invento/r C1 Wout,

May 29, 1928.

R. ANGELI.

.S-TRAND TWISTING AND COILING IECHANISI May Z9, 1928.

- y R. CfANGELL STRAND TwIsTING Ami comme macmmlsu Patented YMay i 29K, 1928. i

lUNITED STA ROBERT C. ANGELI., F PRINCE BAY,

STRAND TWISTING AND COILING MEHANISM.

Bassum Application led August 7, 1924. Serial No. 730,740.

My invention relates particularly to that class of mechanism or machines that are adapted to produce cables or ropes formed of a plurality of strands twisted or wound together, and is especially directed to mechanism wherein a plurality of strands of wire are helically coiled around a mandrel or stranded core to form a cable which may be employed as a driving shaft for connecting mandrel, whichmovable elements for synchronous actuation.

In the production of flexible cable or shaft formed of a plural-ity of layers of wire or strip material superposed-in coiled relation one upon the other, therel are considerable stresses inherent in the fabricated product, due to the tension effected by bending of the individual strands in coiling them aboutthe tends to produce vtorsional stress, and which effects undue internal friction when such cable is rotated about its axis in iexedor curved condition, and furthermore, there is a tendency of this fabricated product when released to recoil andthereby twist upon itself into 'a tangled mass. Owing to the inherent stresses effe'cted by the tension of the individual strands of such cable it has heretofore been impractical to 'ciently free from internal friction as to be 'successfully employed as a driving shaft, except in such limited lengths as to require the constant attention of an attendant.

The principal object of my invention is to provide in flexible cable or shaft producing mechanism, means tending to so Atwist the fabricated cable or shaft as to relieve the inherent stresses incidenttothe tension effected by the laying on of the strands of the superposed windings, whereby such inertflexible shaft, or shaft substantially free from internal frictionv and embodying. the desired flexibility, may be'produced in what may betermed continuous length, or shaft that may be taken up by spooling mechanism l as fabricated.

Other objects vof my vinvention are toprovide means arranged to twist the mandrel or l' e core upon whlch the superimposed strands are being laid to form a composite or fabricated cable, and to provide means to so twist said fabricated cable thus produced, as -to leflecta slight recoil or turning back of the coiled strands and thereby so relieve the stresses inherent therein as to render the fabricated cable inert,.or substantially free from produce cable which is suii-.

vout carrier 1, the strand-fee ing NEW Yoax, -.assIaNon 'ro 'nm ls.`s,.w1n'.r1|: DENTAL MANUFACTURING COMPANY,

A CORPORATION 0F PENNSYLVANIA.

internal friction when employed asia driving or connecting shaft and rotated, or

otherwise actuated, in flexed or curved condition.

Specifically stated the form of my invention, as hereinafter described, comprises a core spool carrier or payout mechanism, a strand bobbin carrier or winding mechanism, and recoil or untwisting mechanism,l all rotatable about the longitudinal axis of the fabricated cable, and a take-up reel or spooling mechanism, which may or may not A be alvanged to rotate about said axis, and

upon which the recoiled cable is wound, and means whereby the rotation of the independent units may be relatively varied.

My invention also includes all the various novel features of construction and arrangement as hereinafter more definitely specified. In the accompanying drawings, Figure 1 is a vertical longitudinal sectional view of a machine constructed in accordance with my invention; Fig. 2 is a transverse vertical sectional View of the machine shown in Fig.l 1 taken on the line 2 2 yin said figure; Fig. 3 is a transverse vertical sectional viewv of said machine taken on the line 3-3 in Fig. l; Fig. 4 is a transverse vertical Sectional 'view of said machine taken on the I line 4-4 in Fig. 1; Fig. 5 is a side elevati'onal view of a short length of the fabricated structure -forming the shaft and showing the first layer of strands coiled upon 4the core; Fig. 6 is a side elevational -view of asection of said shaft showing thesecond layer of strands coiled thereon; Fig. 7 is a side elevational view 'of a section of said shaft showing the -third layer of strands coiled thereon; Fig. 8 is a vertical longitudinal sectional view of a. machine embodying a slight modification' of construction; Fig. 9 is a vertical longitudinal sectional viewof a machine embodying another modification of construction; and Fig. l0 is a transverse vertical sectional view taken through the take-up reel on the line 10-10 in Fig. 9.

The machine shown in Figs. l to 4 inclusive may preferably be composed of separate units cooperatively connected and com- .prising a mandrel-dispensin or core payand winding or laying-on mechanism 2, the recoil or untwisting mechanism 3, arranged to rotate the cable about yits longitudinal axis, and thectakemp or spooling mechanism 4.

frame 5 provi ed with trunnions 6 and 7 rotatably mounted in the standards 8 and 9 and havin the lmandrel or core-carrying s ool 10, which is mounted to rotate in said 1er-frame 5 on the shaft 11 whose axis extendsitransve'rse to the axis of rotation of said flier-frame 5, and which is arranged to pa out the mandrel or core 12 guided through the hollow trunnion 7.

Rotation of the Hier-frame 5 may be effected in an convenient manner, but I have chosenx to il ustrate a simple method which comprises the pulley 13 secured on the trunnion 6, arid yhaving varying diameters larranged to be connected by the belt 15 with a similar, stepped pulley 16 on the countershaft 17. The strand-feeding and winding mechanism comprises vthe strand bobbin frame having its end walls comprising the disks 20 and 21 connected by and 24 mounted for rotation ^in the standards 25 and 26, the trunnion 23 being ex` tended inwardly to form the hollow stud 27 upon which the bobbins 30, 31, 32 and 33 may be rotatably mounted and removably he in position thereon by 'the disk 35, w ch is retained on the stud 27 by therenut 36. v

@Sai bobbins 30, 31, 32 and 33 are respectively arran ed to deliver strands'i, 38, 39

anda 4() to t e strand-twisting die 42,suitably mounted in the disk 21 and-.having therein suitable apertures 43 through which said strands are arranged to pass, and the aperture 44 for the core 12, which is directa lg,

through the hollow trunnion 23, hollow stud 27 and hollow trunnion 24, and' about which said strands 37, 38, 39,- and 40v`are vcoiled by the rotation of the strand bobbin frame'and its die 42. v'I he strands 37, 38, 39 and 4() are respectively directed to the die 42 by passing over suitable guide rollersv or p ulle s 45, .preferably` carried by 'the spacing connected by the driving-belt 49., with' the' pulley l504m the counter-shaft 17 the pulley being of much greater diameter tha'n the ulley 47, so as yto rotate 'fthe strand-bobbin rame at acomparatively lhigh rate of speed.

As` shown in Fig. 1, the stranded structure thus vformed may be progressedlongitudi-4 nally, ata predetermined rate of' spee f, vby .the recoil mechanism comprisingy the 'rum' 52, around' which said stranded structure ,l l' may be wrapped for one or more turns," and l*wlnchgis mounted for rotation 'in the frame 53 on-.anlaxistransverse tosthe'direction of the spacing bars 22,V and respectively havmg hollow trunnions 23,

lineal movement of the: stranded structure and having its peripheral surface in tangential relation with respect tothe lineai axis of said stranded structure.

Said frame 53 is itself mounted for independent rotation about the axis of the y stranded structure, having trunnions 55 and 56 mounted for rotation in the standards 57 and 58,V and being provided with an aperture 59 forming a guide through' said trunnions 55 and 56for the passage of the stranded cable or shaft structure, which is arranged to be wrapped one or more turnsaround the' e i surface of'said drumfrom which it passes to the take-up mechanism, tov be -hereinafter described.

- The trunnion 550i the recoil mechanism is' provided with the stepped pulley '60, f

which is connected by the driving belt 61\ with the stepped pulley 62011 the countershaft 17, and may be rotated with the core pay-out mechanism or may be rotated atrelative-speeds in the-saine or opposite direction as desired. f

vPositive, rotation of thevdruln 52 on its axis may be effected through the worm gear 63 on the shaft 64 of said rum,.by cooperation with .the worm 65 whose shaft 66 carries thel gear 67 in meshwiththe gear 72,'which is secured in stationaryrelatlon upon-the standard 57. j.

,The take-up mechanism comprises the take-up reel having its shaft`76 mounted for rotation inthestandards- 77, and providedv with the pulle 78 -connected bythe belt 79 with the` pul ey 80 on the countershaft 17 It will be obvious that Said counter-shaft may be'rotated in either direction,

and the belts connecting the pulleys thereon may be veither direct or crossed, depending 10B lupon the direction in vwhich the various v units of the machineV are to be rotated', and

said belts may so ,connect the pulleys as to vary the relative speeds atl'which the units maybe actuated.

The various stages of cntli'lltion ofthe.'

fabricated rope or cable are depictedbyen- J .urged illustrations in Figs; 5,6 andyrui first layer of strands 37, 38', 39 and 4 0, being laid side by side iii-coiled .relation about the core or mandrelv12, as shown in Fig. 5; the second layer strands .being laid upon the first layer in oppositely directedco'iled relaf tion, as shown in Fig. 6'; and the thirdlayer of strands being coiled wiii'tn'ossed relation, .to the second layer, as shown in 7,

whereby the composite cable or .sha is formed by 'layers of four' strands disposed side by side, it being (understood however, that the machine may beldapted to form the cable orshaf-t by fabricating the layers ioflone or morestrands shaft-may befformedofmay be deemed practical.

- In h'eform of my invention shown in and said cable or, as many layerseas solelyby the take-up mechanism, which may `cable or shaft.

be so driven as to vproduce a predetermined constant pull to draw out said fabricated Said take-up mechanism comprises the take-up reel 10,5, having its shaft 106 mounted for rotation in the standards 1.07, and provided with the pulley 108 connected by the belt 109 with the pulley 110 which is carried by a suitable slide frame `111 mounted for longitudinal movement on the counter-shaft 100, and having a friction wheel, 112 arranged to alternately engage the opposed surfaces of the friction disks 113 and 114.

The friction wheel 112 is arranged to be held in engagement with the friction disks 113 and 114 by the double bell-crank-lever 115, which'has one arm engaged with the slide-frame 111 and its laterally extended arms 116 and 117 provided with suitable hooks 118 and 119 arranged ^to receive the loop or ring 120 of the weight 121. As will be obvious, said weight may be engaged with either of said hooks 118 or 119, depending upon which of the friction disks 113 and 114 the friction wheel 1121s to be engaged, and umm the direction in which the countershaft 100 may be rotated.

In this form of my invention shown in Fig. 8, the recoil drum 125, which is mounted for rotation in the frame 126 is rotated v bythe take-up mechanism` pulling on the fabricated cable, which is wrappe around said drum 125, as shown, and requires no gearing such as shown in- Fig. 1. Furthermore, 1n Fig. 8 I have chosen to show the core dispensing bobbin and the recoil frame so connected with the driving shaft as to rotate-at relatively different speeds. d

In the form of my invention shown in Figs. 9 and 10, the recoil or untwisting drum 130 is mounted for rotation about the axis of its shaft 131 which is carried bybearings -in the standard 132, said rotation 'being effected by the shaft being fabricated, whichA is wrapped one or more times around said drum and progressed by the takeup reel 135.

In this form of my lnvention, the `takeup reel 135 not only rotates von its axis to longitudinally progress the fabricated shaft,

but itis also arranged to rotate bodily around the longitudinal axis of said fabricated shaft, said reel 135 having its shaft 136 mounted in suitable bearings in the frame 137, which -has the trunnions 138 and v139 mountedtorotate in the standards 140 and 141, the former of which is rovided with the bore 142 through which t e fabri cated shaftpasses to said takeup 135.: The rotation of said frame 137 may be eected the stepped pulley 143 whichis connected by the belt 144 with thestepped vpulley 145 on the countershaft 146.

The shaft 136 of the .takeup reel 135, is

will'be obvious, when the frame 137 is rotated about the longitudinal axis of the fabricated shaft, the takeup reel 135 will be caused to rotate on the axis of its shaft 136.

It will be obvious that the takeup reel 135 -and the worm gear 147 may both be secured to the shaft 136. so asto rotate the reel ata predetermined speed and consequently draw out the fabricated shaft at a like speed, or said worm gear 147 may be loosely mounted to rotate on the shaft 136 and be frictionally connected with said shaft 136 and takeup reel 135 by any desired form of tension mechanism, such, for typical illustration, as shown in Fig. 10, wherein the friction disk 152 is forced into engagement with the worm gear 147 by the spring'153 and the tension varied by the adjusting nut 154, whereby any desired pull maybe exerted to draw out saidfabricated shaft.

Although, in=this form of my invention, Athe recoil or untwistingv drum 130 does not rotate bodily about the longitudinal axis of the fabricatedshaft, as in the other forms of my invention, it will be obvious, however, that said drum tends to cooperate with the takeup mechanism whose takeup reel 135 is arranged to rotate bodil about thel longitudinal axis of the shaft being fabricated, to

of said shaft.

It is to be understood that the means herein shown and described for actuating the associated mechanism is typical and simply for illustrative purposes, as it is obvious that the parts may be readily connected for cooperation Iby other means, such, for instance, by suitably correlated gearing.

Furthermore, it is to be understood that the core herein referred to may consist of a sin le strand or may becom osed of a plurahty of strands laidvl parallel, twisted together. 'or coiled about each other in any form desired.

My invention'is advantageous in that the fabricated cable thus formed may be so rotated upon its longitudinal axis as to relieve the tension in the strands forming the layers during fabrication, so that 'when spooled upon the take-up reel it will be substantiall vious that various modifications may be noA 100 effect a recoil or untwisting of the strands claim:

made therein without departing from the yessential features of my invention as defined in the' appended claims.

Having thus described my invention, I

1. A machine of the class described, comprising rotary mechanism'for fabricatinga stranded shaft, means rotatable about the axis of said stranded shaft for spooling the shaft, l0

and means interposed between said fabricating mechanism and spooling means arranged to prevent rotation of said fabricated shaft and thereby tend to relieve the inherent stresses therein before spooling.

' prising mechanism for-fabricating a stranded shaft, means for spooling said fabricated shaft, means arranged to effect arecoiling or turning back of the coiled strands before spooling, and means tending to prevent the rotation aof said fabricated shaft as it leaves the fabricating mechanism.

3. A machine of the class described, comf prising mechanism arrangedfor fabricating a stranded shaft having a core, and having means for relatively twisting the core to cren ate/a predetermined inherent torsional stress therein during fabrication of said shaft.

4.' A machine of the class described, com- Wound on. said core.

-6. A Amachine of'the classdescribed, comprising a plurality of cooperative units including 4strand-twisting lmechanism, and drawing-out mechanism arranged to rotate with respect to each other about the axis of the'fabricated product.

v7. A machine of the class described, com- I vprising a plurality of cooperative units in# cliding 'coreLdispensingmechanism, strandfeeding and winding mechanism, and draw ing-out mechanism, all arranged to rotate 2. A machine of the class described, com? prising mechanism for fabricating a strand coiling or turning back the .coiled strandswith respect to each otherabout the axis ofl the core' ofthe fabricated productr 8. A machine of the class described', coinprising a plurality 'of cooperative units including means arranged to pay out a core strand, meansarranged to wind strands about said core stral d, and meansv arranged toprogress the Vfabricated roduct .longituglins'lly,4 all being mounted or relative rota"- `the combination with mechanism arranged .to dispense a core,

tion about the axis of sadcore strand, and cooperative to Wind said strands together and to so recoil the fabricated product as to relieve the inherent tension. ,f

9. A machine of the class described; comprising aplurality of'cooperative. units includiiig means arranged toy pay out acore strand, means arranged to wind strands about said core strand, and means arranged to progress the fabricated product longitudin'ally, all being mounted for relative rotation about the axis' ofsai'd core strand, and

cooperative to win-d saidv strands togetheraiid to so recoil' the fabricated product as to` relieve the inherent tension, and meansv'arranged to take up the fabricated product thus recoiled.

10. A machineA of" the class described, comprising a plurality of cooperative rotary units includingv core-dispensingmechanism, strand-feeding and winding mechanism,0cooperative to form a fabricated shaft, take-up mechanism, and means disposed between the winding mechanism and ltake-up mechanism arranged to rotate the fabricated shaft upon its axis of longitudi nal movement at a speed differing from the speed of rotation lof said core dispensingmechanism. y

11. 1n a machine ofthe class described,

of mechanism arranged to wind a plurality of strands about said core, mechanism for progressing the fabricated product longitudinally, all being mounted to rotate about the axis of said core, means connected to conteniporaneously rotate said mechanism, and means arranged to effect the relative rotation of said mechanism, and a take-up for the product thus formed. f 12. In a machine of the. class described, the combination with means arranged to dispense a core, of means arranged to form stranded convolutions about said core, means for progressing the fabricated prod; uct longitudinally and conteniporaneously rotating said product about the axis of lits core, anda take-up for the product thus formed, cooperative with said progressing means, to untwist said fabricated product. v 13. In a machine 4of the class described, the combination with mechanism for feeding and twisting a plurality of strands-'together -to form a stranded shaft, means rotatable. about the longitudinal axis of the| fabricated'product', arranged to contempor' raneously rotate said product about its axis while progressin'gitj longitudinally.

l14;'In a machineA of. the class described, the combination with mechanin arranged to feed and twistV together a plurality of lstrands -to vform 'a composite shaft. having a mechanism and said take-up means arranged to effect untwisting of said shaft whereby the strands are' recoiled to relieve the internal friction between said strands, and the core is twisted to produce torsion therein before fabrication. l

15. Mechanism arranged to wind together a lurality of strands into a fabricated iexible shaft, andcomprising strandwinding means, takeup means rotatable` about the longitudinal axis of said shaft, and means arranged to prevent the rotation of said 'shaft between said takeup means and said winding means, and thereby cooperate with said takeup means to effect recoil or untwisting o f said shaft.

16.A Mechanism arranged to windv together a plurality of strands into a` 'fabricated flexible shaft, and comprising strand- Winding lmeans, take-up means rotatable about the longitudinal axis of said shaft, and comprising a takeup reel, and a recoil or untwisting drum having a fixed axis of.

rotation, around which thesaid fabricated shaft passes to prevent the axial rotation of said shaftbetween said takeup means and said: winding means, and thereby cooperating with said. takeup means to effect recoil- .ing or untwisting of said shaft to relieve inherent stresses.

17. The .method of fabricating a composite shaft comprising a pluralityvof strands wound about a core, which consists in maintaining! said core under torsional stress during fabrication of the wound strands, independent of the natural stress incident to the.

winding of said strands thereon.

In witness. whereof, I have hereunto `setmy hand this 17th day of July, A. D., 1924.

` ROBERT C. ANGELL. l

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