US2140046A - Thread bobbin producing machine - Google Patents

Description

Dec. 13, 1938. c, E, BOULE 2,140,046

THREAD BOBBIN PRODUCING MACHINE Filed May le, 195e 4 sheets-sheet 1" 4a" 4/ 4f if J3 4# /7 4M /ff /M Dec. 13, 1938. c', E. BOULE 2,140,046

THREAD BOBBIN PRODUCING MACHINE Filed May 16, 1936 4 sheets-sheet 2 Dec. 13, 1938. c. E. BOULE l THREAD BOBBIN PRODUCIG MACHINE Filed May 16, l1936 4 Sheets-Sheet 3 Dec. 13, 1938.

c.E. BOULE I 140,046 l THREAD BOBBIN PRODUCING MACHINE Filed May 16, 41936 4 Sheets-Sheet 4 ...ma l

www v www Patented Dec. 13, 1938 UNITED STATES PATENT OFFICE Camille E. Boule, East Hampton, Conn., assignor to Summit Thread Company, East Hampton, Conn., a corporation of Connecticut Application May 16,

9 Claims.

This invention relates to apparatus for producing thread bobbins, particularly though not exclusively, those which are furnished ready wound for use in the shuttles of sewing machines, which consist of a tubular core, paper disks constituting heads secured to the ends of such tube, and a mass of thread wound about the tube between the heads. It comprises improvements in the means for automatically assembling the parts of such structure, the particulars of one embodiment of which are described in the Vfollowing specication. The invention also comprises the novel principles and equivalents of such embodiment within the scope of the appended claims as interpreted with respect to the prior art.

In the drawings which illustrate the embodiment oi the invention above mentioned- Fig, 1 is a front elevation, with parts broken away and shown in section, of a machine organized and operable to apply paper heads to the core tubes of bobbins containing the improved features referred to;

Fig. 2 is an end elevation, also shown partially in section, of the machine;

Fig. 3 is a plan View of the machine shown with the cop magazine and water container removed;

Fig. 4 is a vertical section taken on line 4-4 of Fig. 3;

Figs. 5 and 6 are detail horizontal sections on a larger scale, taken on lines 5 5 and 6 6 respectively of Fig. 1;

Fig. 'l is a detail vertical section taken on line 'l-l of Fig. 5;

Fig. 8 is a perspective view of the instruments by which patches of dried adhesive on the bobbin heads are moistened preparatory to union with the bobbin core tube;

Fig. 9 is a side View of a fragment of a continuous paper strip or ribbon perforated at intervals, provided with patches of dried adhesive contiguous to the perforations, and embossed in areas concentric with the perforations, from which the embossed portions are severed to form the heads of the completed bobbins;

Fig 10 is a section of such strip taken on line lil-iii of Fig. 9;

Fig. 11 is a perspective view of the parts of the bobbin prior to assembling and of the instruments by which the initial connection between the core tube and heads is effected;

Fig. 12 is a detail sectional view showing the operation of applying heads to the core tube 5 1936, Serial No. 80,121

Fig. 13 is a cross section taken on line I3-I3 of Fig. V12; I

Figs. 14 and 15 are views similar to Fig. 12 showing successive stages in the procedure of applying and connecting the heads to the core tube;

Fig. 16 is a sectional View of other instruments by which the final step of connection between the tube and heads, and iinishing of the bobbins, is` performed;

Fig. 1'7 is a partial side elevation and partial axial section of a bobbin produced by the machine shown in the preceding figures.

Like reference characters designate the same parts wherever they occur in all the figures.

I will rst describe the characteristics of the bobbin and the steps of assembling its parts. Such bobbin consists of a tube a and heads b, b applied to opposite ends of the tube. Or, if desired, the bobbin may be provided with one head only. The heads are made of strong, tough paper having appreciable stiiness, but at the same time thin and exible enough to be capable of yielding and bending resiliently to some extent within the elastic limit. A mass of thread c is wound around the tube a between the heads, preferably with the so-called universal wind, whereby its convolutions are maintained in place without assistance from the heads.

Before application to the tube, the heads are centrally pierced with triangular holes d (Fig. 11), the angles of which are located in the circumference of a circle equal to the end of the bore of the tube, and the sides of which are chords of such circle. On the face of the head which is designed to abut against the tube, adhesive e is applied in patches or areas which collectively form the chordal segments of a circle surrounding the hole and of a diameter approximately equal to the outside diameter of the tube a. In assembling' the heads with the tube their gummed areas, in moist condition, are applied against the ends of the tube and the segmentsl between the sides of the triangular holes and the inner rim of the tube are turned into the tube and bulged radially outward into close contact with the contiguous inner wall of the tube. Such inturned segments form tabs f which, being united to the tube by the adhesive, effect a strong union. There is, or may be, a further union between the end of the tube and that part of the head which abuts thereagainst; and the head is preferably indented or offset in an annular zone g closely surrounding the end of the tube, whereby the strength of the bond is enhanced and a more pleasing finished appearance is produced.

For convenience in assemblage by automatic mechanism, the heads are presented to the assembling machine as unsevered areas in a paper strip h of indefinite length, (Figs. 9 and 10), in which the holes d have been cut. Circular portions of the strip concentric with such holes are severed by automatic means prior to assemblage. The adhesive is applied to the strip in the locations previously described, and may be thus applied immediately before severing and application of the head to the tube, orit may be first applied and dried, and then moistened shortly before application of the head to the tube.

Preferably the areas of the strip intended to be cut out as bobbin heads are embossed or offset in such fashion as to form annular beveled zones y' which, when severed from the strip, form the marginal portions of the heads and exert a light pressure on the outer parts of the thread winding.

The machine which I have illustrated here for producing the bobbins thus described, is designed to operate with previously wound thread cops and with continuous strips of paper from which heads are cut. The thread cops consist of short sections of paper tubing and a quantity of thread cross wound thereon. They are produced according to methods long and commonly usedin the business of purveying ready wound bobbins without heads for use in sewing machine shuttles.

K That is, after winding, the wound thread is compressed axially to bring its convolutions closer together, make thefmass more compact, and reduce a given length of wound thread to the minimum bulk. At the same time the core tube is swaged or compressedl lengthwise to make its length equal to that of the thread mass and bring its ends flush with'those of the mass.V

A quantity of such wound cops or bobbins are contained loosely in a hopper or magazine 20 which is supported by standards 2| on and above theframework 220i the machine. Such frameworkV has legs 23, broken away and not shown completely in these drawings, by which it may be supported on the oor or a bench or pedestal. In the opposite ends of the framework, which is provided with bearings of any suitable character, are shafts 24 and 25 parallel to one another and extending in the front to rear direction of the machine. These shafts are rotated simultaneously by a drive shaft 26 through Worm and gear couples 21, 28 and 29, 30 respectively, which are enclosed by protective housings 28a and 30a. The driving shaft in turn is, driven from any convenient source of power by any desired means, such means shown here being a pulley 3| on the shaft and a belt 32.

Shaft 24 drives, through gears 33 and 34, (Fig. 4), a shaft-35 on which are secured a cam 36 (Fig. 4) and a sprocket 31 (Fig. 1). Sprocket 31 drives, through chain 38, sprocket 39 and gears 40 and 4|, a shaft 42 (Fig. 2). Shaft 42 operates two lifters 43 and 44, guided to reciprocate vertically at each side of the outlet from the hopper, so that such lifters rise and descend oppositely toV one another. For this purpose the shaft is connected with each of the lifters by a crank pin'45, connectingrod 46 and lever 41, and the crank pins for the respective lifters are at opposite sides of the axis of the shaft. The lifters jostle and agitate the random collection of cops, preventing them from forming an arch over the hopper outlet and permitting those which happen to drop in register with a vertical discharge chute 48 to enter the chute and rest one upon another in peripheral tangent contact with their' axes parallel to one another. The transverse dimensions of the chute are so proportioned with respect to the `axial length and diameter of the cops that the cops are excluded from the chute except in the relationship above described.

The chute is open at the lower end, but is there blocked by a Idisk 49 (see Fig. '1), in the periphery of which are a number' of notches 50 equally spaced around the center and each of a. radial depth and circumferential width approximately equal to the diameter of the cops. In

. other words these notches are of proper dimen- Ythat transverse dimension of the chute which corresponds to the diameter of the cops, with its outer circumference close to the outlet from the chute. Hence, as it is rotated step by step with a pause when each notch comes into line with they chute, it receives cops one at a time and carries them away to a discharge point; and in each step of its motion a projection between two notches holds back the lowermost cop in the chute until the following notch has come into line.

The index plate has also the important function of locating the cops successively in two operating positions, one of which is that of the cop shown at c' and the other is that of the cop shown at c2 in Fig. '1. Hence the notches must be of correct dimensions and correctly spaced to locate all of the cops of al given size in the working locations, within permissible limits of error. A guard 50| of channel section is secured to one side of the chute 48 and extends around the circumference of the index plate far enough to retain the cops in place when they reach the working location c2. The flanges of such guard ernbrace the rim of the plate in the sector between the operating positions as shown by dottedl lines. When carried beyond the end of the guard, the completed bobbins fall from the index plate into a receptacle, not shown.

The index plate is secured to a shaft sup-V ported in bearings on the frame structure, which carries a fixed ratchet wheel 52 driven by a pawl 53 carried by the arm 54 of a lever which is pivoted on shaft 5|, and the other arm 55 of which is connected by a link 56 with a lever 51. This lever is pivoted on a bracket 58 rising from the rear part of the framework, and carries a follower roll 59 which engages the cam 35 and is displaced by the latter with every revolution of shaft 34. The cam embraces only a small fraction of 360, hence causes a quick movement of the index plate and allows the latter to remain stationary during most of the cycle of operations. The teeth of the ratchet 52 are equal in number to the notches in the index plate, and are suitably correlated with the latter to effect the results described.

Two paper strips h, h from which bobbin heads are to be cut are led from reels or drums 60, 6| supported b-y brackets 52, 63 at the rear of the machine. The strips pass to and through guides 64, E5 on either side of the vertical plane through the index plate and hopper chute, and terminate at points near the bobbin location c', as plainly shown in Figs. 5 and 7. A feeder 68 slides forward and back midway between the guides 64 and 55, in a guideway S1 on the upper end of a block 58 which rises from the frame structure. Pawls 69 and 1D project from the forward end of the feeder and are pressed apart from one another by a spring 1| (Fig. 5) so that their extremities bear against the guideways 64 and 65 or against paper strips occupying such guideways. These guideways have retainer iianges 65a for the upper and lower edges of the strips, as shown in Fig. '7, which are interrupted to leave room for entrance and travel of the feeder pawls. These pawls effect a positive feed of the strips by entering the holes d already prepared in them; and the holes are preferably located so that one of the straight bounding edges is perpendicular to the movement of the pawl and in position to receive the forward thrust of the pawl. This arrangement obtains maximum immunity to danger of the hole being torn by impact and thrust of the pawl.

Mechanism for reciprocating the feeder block is shown in Figs. 3 and 4. This comprises a bell crank lever 12 pivoted to a bracket 13 on the frame structure, a link 14 connecting the feeder with one arm of this bell crank, an eccentric rod '.15 connected to the other arm of the bell crank, an eccentric 16 surrounded by a strap 11 to which the rod 15 is secured, and a shaft 18 driven from shaft 25 by gears 19 and 8|), and to which the eccentric is keyed. The strip guides are located to conduct the strips h, h with the line of holes intersecting the axis of the cop in the location c of Fig. 7, and the feed mechanism is organized to advance the strip, with each motion, a distance equal to the center spacing between the holes and to leave the strips with a hole in each approximately in axial alinement with that cop position.

Rising from the frame structure at opposite sides cf the index plate 49 are fixed blocks 9| and 82, each having a bore or passageway axially alined with one another, and in approximate axial alinement With the cop position c', in which are slidingly fitted punches 83 and respectively. These blocks (which for convenience may be called cutter supports), are transversely slotted at 85 and 86 in their front and rear sides to a depth and width sufficient to afford passageways for the strips h, h, and are counterbored and internally threaded at their inner ends and there fitted with annular cutting dies 91 and 93 in cooperative register with the punches 93 and 84 respectively.

The punches have longitudinal axial guideways in which are slidingly fitted rods 89 and 99 respectively, the function of which is to center bobbin heads cut from the paper strips with the bobbin core tubes and eifect an initial attachment of such disks to the tube. 'Ihe rods may be called for descriptive convenience assembling rods or members. In order to perform the functions indicated, each rod is provided with a projection 9| on its end of triangular prismatic form with dimensions to enter and iit closely the hole in the adjacent bobbin head, and the angles of which are dimensioned to enter and make three point engagement with the bobbin tube, thus alining and centering the tube and heads with one another. Preferably the angles of both the extension prisms and the holes in the disk do not continue to sharp edges, but are somewhat truncated so as to avoid danger of cutting the disks and tubes. Preferably also the extremity of the prism is chamfered to facilitate entrance into the holes and tube orifices. Adjacent its prismatic end each assembling rod is cylindrical with diameter approximately the same as the bore of the cop tube, but small enough to bend the segments of the paper head adjacent to the sides of the hole into the tube and crowd such segments outward to a cylindrical curvature in contact with the inner walls of the tube.

Operating mechanism for the punch 84 and assembling rod 90 is shown in Fig. 5. A guide 92 is iixed on the frame structure, in which a slide formed with a recess in its upper part between its ends, is mounted to move in a straight path tor-Jard and away from the mid front-to-rear piane of the machine. Thrust rods 94 and 95 slidingly mounted in the slide 93 to move in the same directions. Rod 94 is directly connected to iiange 99 on punch 84, and rod 95 is connected by a coupler block 91 with an extension the assembling rod 9D. A spring 98 reacts between the cutter support 82 and punch 34 tending to move the latter and its thrust rod 94 outward, and a spring 99 reacts between a portion of slide 93 and the coupling block 91 located in the recessed part of the slide in a manner to transmit thrust yieldingly from the slide to the assembling rod 99. Said rod is slidable endwise in a tubular plug iai, adjustably connected to the slide and protruding toward the punch. A third spring, or rather a pair of springs, |92 (Figs. l. and 3), further described later on, tends to moved slide 93 also in the same outward direction. Cams it, iiii and |55 keyed to the shaft 18 engage respectively the slide 93 (through a follcwer roll it) and the thrust rods 94 and 95 to operate the punch and assembling rod in proper sequence to perform their appointed functions.

A similar but reversed mechanism is provided for operating the punch 83 and assembling rod 89, and includes the cams |01, |98 and |09 shown in Fig. 3. So far as duplicates of the operating members 93||J| are shown in connection with left hand punch and assembling rod, in Fig. 3 and elsewhere, they are designated by the same reference characters.

The same springs l 92 act equally and oppositely on both slides 93. 'Ihey are confined between abutments |69 on these slides. Being of helical form and very long in proportion to their diameter, they are held in line by positioning rods i i i, which pass slidingly through the abutments i i@ and are prevented by nuts on their ends from slipping out of place.

The cams |93, |04 and |95 are suitably designed and timed so that, in the operation of the machine, the cam |93 first advances the slide 93, bringing the prismatic end of the assembling rod a hole in the paper strip. Further advance of the slide causes the plug to thrust against the punch 84, advance the latter to cut a disk from the strip and bring the disk against the side of the thread cop. Cam E95 then advances the assembling rod independently into the cop tube far enough to cause it tocenter the tube and disk by means of its prismatic end and then to inward the adhesive segments of the disk between the edges of the hole and the rim of the tube, and to bulge such segments into firm surface contact with the interior of the tube. Slide 93 is then withdrawn by the springs Iii, withdrawing the assembling rod, and the punch is showed to withdraw until the thrust rod 94 is arrested by a dweil of cam |94, which has meanwhile been brought beside the outer end of this rod. Retraction of the punch thus permitted is enough to release the bobbin, but the punch is held in the opening of the die 8S until the index plate takes its next step of rotation, whereby to prevent the bobbin from slipping into the die accidentally and being injured. As soon as the index plate has substantially completed its movenient, which is performed in a very brief time, the punch is permitted to Withdraw clear of the paper strip when the latter is advanced to bring an uncut area into cutting position and a hole into line with the assembling rod.

Equal and opposite actions are performed by the cams II, |98, |39 and the punch 83 and assembling rod 89 at the opposite sideof the machine, simultaneously With the actions above described, whereby heads are applied and fastened to opposite ends of the thread cop at the same time and the thrusts of the oppositely acting punches and rods balance each other. The iength of the prismatic extensions of the two assembling rods is slightly greater than the thickness or the paper disks, as appears from Figs. 12 and 13, enough so to enable these extensions to center the thread tube with the disks. They are so short, however, that the adjacent parts of the rod, of full cylindrical form, may enter opposite ends of the tube simultaneously without bringing the extensions into Contact With one another.

A finishing operation is performed upon bobbins in the position c2 by instruments shown in Figs. 6 and 16. At one side of the index plate and in substantial alinement with the bobbin axis in position c2 are a stationary anvil H2 and a coaxial centering rod H3. At the opposite side of the index plate are a slidable tubular press die il and a centering rod I|5 passing through its axis. The members at one side are axially alined with the members at the other side. Rod H5 is connected by a longitudinally adjustable screwthreaded adapter H6 with a slide I il mounted to travel laterally in guides at the front of the machine and coupled by a connecting rod I 8 with a crank H9 (Fig. 1) on the shaft 25. The press die is slidingly mounted in a fixed guide |28 and is retracted from the index plate by a spring |2| to the limit permitted by a shoulder |22 on the die. When the slide I1 advances from right to left (Fig. 6), the advancing end of the adapter engages the outer end of die I I4, and thrusts its inner end against the bobbin, thereby displacing the bobbin against the anvil die I I2 and exerting pressure on the bobbin.

Centering rod |I3 is guided in a bracket |23 (Fig. l) and is pressed upon by a spring I 24 to the right from the position shown in Fig. 6. A lever |25 pivoted to a fixed bracket |26 is coupled with slide I by an upright |2'| fixed to the slide and a connecting link |28. The arm of lever |25 at the opposite side of its pivot from the connection with link |28 engages a collar |29 on the rod. Thus the slide Il? controls both rods, causing them at times to travel oppositely to one another and causing both to be retracted at the same time.

As the rod I I 5 advances leftward from the position shown, the rod I I3 is at the same time relieved of restraint by lever |25 and is advanced by its spring toward the right. Thus the rods advance through one another in substantially equal measure. the ends of the bobbin core and center it. The stroke of the rod H5 is long enough to carry it all the way through the bobbin, and in passing through, it pushes the rod I I 3 back to the position shown in Fig. 16. Its diameter is large enough to exert a radial pressure on the core tube of the bobbin, whereby it expands the inturned tabs Their ends are sufficiently beveled to enterY f of the heads into more forcible contact with the tube, displaces any inward distortion of the tube Which may have resulted from the previous operation, and gives uniformity of diameter to the entire bore of the bobbin. It also prevents inward buckling of the tube under the pressure oi the die H4 and anvil H2.

The press die has an annular bead or rib |3| concentric with its bore, and the anvil has a corresponding bead |32 (Fig. 16), which are of appropriate form and properly located to indent the bobbin heads on circular lines closely embracing the tube ends. Such beads and the indentations produced by them are shown in principle in Figs. 16 and 17, but with exaggeration of dimensions, as Well as exaggeration of the thickness of the tube and heads for clarity of illustration. The pressure exerted by the die in this operation is regulated by adjustment of the adapter IIB, which is also a pusher for the die, and is adjustably threaded into the slide H1, as previously described. It is equipped with a lock nut iiia to secure its adjustments. When the rod i5 withdraws, the iinished bobbin is stripped from it by the die Hd, which is arrested by its shoulder |22 with its end so near to the index plate that it releases the bobbin from the rod While the major part of the bobbin remains between the end faces of the index plate. Thus the index plate is enabled to propel the finished bobbin to the discharge point.

Preferably the index plate is made of yieldable and resilient tough material, such as vulcanized rubber of a composition suitable to make it nearly enough rigid to perform its supporting and carrying functions. Its yielding character and relative softness as compared with the punches 83, 84 and the press die H4 avoids injury to these elements in case any parts of their edges should strike the boundaries of the notches in the index plate.

The patches or areas e oi dried adhesive which the prepared strips carry adjacent to their perforations, are moistened shortly before the heads are cut from the strips and applied to the tube. The machine is equipped with moistening means, here represented as a pair of arms |33 and |34 (shown in detail in Fig. 8), which are pivoted on top of the cutter sup-ports 8| and 3E (Fig. 3) and have depending extensions |35 and |35 which extend between the strip guides. The extremities of these extensions are beside one of the stopping locations of the holes in each strip, between the feeder and the punches. Pockets are Iformed in the outer faces of such extremities which contain pads |31 of felt or other absorbent material adapted to apply moisture to the strips when brought in contact with them. Such pads are supplied With Water from an elevated tank |38 (Figs. 1 and 2), from which flexible tubes |39 and |46 lead to the two arms. Passageways IM in the arm extensions lead from the respective tube connections to the pad sockets, as shown with respect to the arm |33 in Fig. 8, furnishing continuously a suiiicient supply of Water to keep the pads moist. Springs M2 normally hold the arm extensions away from the strips, as shown by Fig. 3. They are moved out- Ward so as to meisten the gummed areas when the punch slides 93 advance, being so operated by adjustable pusher rods |553 which project aheadV of the slides and applyl thrust to short arms IM through transmission rods M5 which are supported slidingly in fixed guides |45 in line with the pushers I 43. The short arms I 4 4 tub are extensions of the arms |33 and |34 to opposite sides of their pivots from the pad-carrying extremities.

Instead of moistening previously applied and dried patches of glue, mucilage or other suitable adhesive, it is within my contemplation to use the moistening means, or their equivalent, for the initial application of adhesive to the strips. This can be accomplished by supplying the tank |38 with a freely iluid adhesive.

The operation of the machine has been described in connection with the foregoing description of its operating instruments and the propelling mechanisms therefor.

IIhe foregoing specific description and the drawings to which it relates are intended to explain the invention with reference to a concrete embodiment and not to indicate limitations in its. scope other than those expressed in the claims.

What I claim and desire to secure by Letters Patent is:

l. A bobbin making machine comprising means for supporting a bobbin core tube, means for presenting a disk in approximately axial alinement with said tube, such disk being adapted to serve as a head for the bobbin and having a polygonal central hole of which the angles lie substantially in a circumference equal to that of the bore entrance in the adjacent end of the tube, means for rendering adhesive areas of the disk contiguous to the sides of the hole on the surface next to the tube, an assembling rod guided to move lengthwise in a path substantially alined with the axis of said tube when so held, said rod having on one end a prismatic extension complemental to the hole in the bobbin head and having a cross section adjacent to said prismatic extension which is similar and approximately equal to the said bore entrance of the tube, and means for moving the assembling rod with its prismatic end foremost from a position at the opposite side of the head from the tube, so that its prismatic extension first enters the hole and then enters the tube, centering the head with the tube, and thereafter further advancing the assembling rod so as to bend the adhesively treated segments of the head into the tube and crowd such segments outwardly into contact with the contiguous inner walls of the 2. A bobbin assembling machine comprising a holder for a core tube adapted to support such tube in a prescribed position, an assembling rod guided to move lengthwise in a path approximately coincident with the axis of a tube held in said position, said assembling rodhaving at its extremity nearer to the tube a prismatic extension of which the corners lie in a circumference equal to that of the bore entrance of the nearer end of the tube, the assembling rod adjacent to the extension having a circular cross sectional area approximately equal to that of the said bore entrance, and means for reciprocating the assembling rod toward and intov the adjacent end oi the tube and away therefrom.

3. A bobbin asembling machine as set forth in claim 2 and comprising further a punch coaxial with the assembling .rod and reciprocatable independently thereof in the same directions, a cooperating annular die located between the position in which the tube is held and the withdrawn position of the punch, means for feeding between said die and withdrawn punch a strip of bobbin head material having a row of polygonal holescomplemental to the prismatic` extension of the assembling rod and arresting such strip with one of such holes in alinement with the assembling rod, and means for reciprocating the punch.

4. A bobbin assembling machine comprising a holder adapted to support the tubular core of a bobbin in position for assemblage with a head, a guide for a strip of bobbin head material extending in a line, the projection of which crosses the projection of a core tube held by said holder, a coaxially arranged assembling rod and punch mounted to reciprocate independently of o-ne another in a line approximately coaxial with a bobbin core so held, the assembling rod having a prismatic extension on the end nearer to the tube position, the angles of which extension lie in a circular circumference equal to the nearer oriiice of the bore of such a tube, a die complemental with the punch located in axial alinement therewith and between the tube position and the line oi the strip guide, means for adhesively treating a strip in said guide, and mechanism for reciprocating the assembling rod and punch toward and away from the tube holder.

5. A bobbin assembling machine comprising a guide adapted to conduct a strip of bobbin head material in a prescribed path, feeding means adapted to propel a strip step by step in such path, a moistener located to apply a moistening liquid or an adhesive to a limited area of a strip in said guide, a holder for bobbin core tubes adapted to support such a tube in assembling position beside the path of the strip, an annular cutting die between such path and the said assembling location of the tube, a punch complemental to the said die mounted to reciprocate through the die and across the strip path toward and away from said tube location, an assembling rod guided to reciprocate coaxially in said punch having a prismatic extension of which the angles lie in a circumference approximately equal to that of the orifice of the tube, and the cross section adjacent to said extension is substantially complemental to the tube bore, and mechanism for operating said strip feeder, said moistener, said punch and said assembling rod in time to moisten an area of the strip, advance the strip across the path of the withdrawn punch and assembling rod, and advance the punch and rod to cut a bobbin head from the strip and apply such head to one end of the tube and bend adhesively treated segments of the disk adjacent to its center into the end of the tube and against the continuous inner walls theerof.

6. In a bobbin assembling machine, a strip guide, a feeder for propelling a strip of bobbin head material step by step along said guide, a moistener adjacent to the path of such guided strip, being normally withdrawn from the strip, a punch reciprocatable across the path of the strip after emergence from the guide, means for reciprocating the punch to cut bobbin heads from the strip, and means operating in conjunction with the punch reciprocating means for bringing the moistening device against a limited area of the strip, whereby such area is rendered adhesive.

'7. A bobbin assembling machine comprising means for placing and holding a tubular bobbin core successively in two operating locations, means adjacent to one of such locations for applying a bobbin head against one end of such core and bending adhesively treated central parts of the head into the core and against the inner walls thereof adjacent to such end, and means adjacent to the second operating position organ ized to enter and fill the tube and inturned parts of such head, and to indent the head from its outer side in a line closely surrounding the end of the tube.

8. A. bobbin assembling machine comprising holding and feeding means organized to locate and support a tubular bobbin core successively in two operating locations, an assembling rod and punch mounted to reciprocate beside the rst of said locations in approximate alinement with the tubular core held in said location, means for feeding a strip of bobbin head material between such core and the withdrawn locations of the rod and punch, means for operating the rod and punch in time with the feeding movements of said strip to permit advance of the strip and then to move them toward the core position, whereby the punch severs a bobbin head from such strip and the assembling rod crowds parts of the disk into the end of the core and against the adjacent inner walls thereof, a center rod and coaxial press die beside the second operating position of the tube reciprocatable in approximate alinement with the tube held in that position,

and means for advancing said rod into the tube and advancing the press die to emboss the previously attached head around the end of the tube.

9. An assembling machine comprising a rotatable index'mcmber having recesses forthe reception of bobbins, means for turning said member step by step through angles equal to those between adjacent recesses, a punch and die assemblage adjacent to one of the stopping locations of said recesses including a punch Vreciprocable in alinement with such location, an assembling rod mounted coaxially in said punch with provisions for independent movement through the same and having a prismatic extension on its end nearest to the index member and being of circular section adjacent to said extension and of such diameter that its circumference substantially coincides with the angles of the extension, means for advancing and Withdrawing the punch and assembling rod respectively toward and from the index member, means for feeding a shearable strip between the withdrawn punch and assembling rod and the die of said punch and die assemblage, a second rod mounted toI reciprocate toward and away from a more advanced stopping location of the said recesses, having a tapered extremity adjacent to the index member and a diameter adjacent its extremity slightly largerV than that of the assembling rod, and means for moving the second named rod toward and away from the index member during the pauses of the latter.

CAMILLE E. BOULE.

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