US840334A - Process of making shoes for pneumatic tires. - Google Patents

Description

PATENTED JAN. 1, 1907 J. W. HYATT. PROCESS-OF MAKING SHOES FOR PNEUMATIC TIRES.

APPLICATION FILED AUG.19,-1905.

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PATENTED JAN,, 1, 1907.

-J.'w. HYATT. PROCESS OF MAKING SHOES FOR PNEUMATIC TIRES.

APPLIO TION FILED AUG 9 I UNITED STATES PATENT OFFICE.

PROCESS OF MAKING SHOES FOR PNEUMATIC TIRES- Specification of Letters Patent.

' Patented. Jan. 1, 1907.

Application filed August 19, 1905. Serial No. 274,939.

To all whmn it may (OH-(.Rlfld Be, it known that 1, JOHN WESLEY HYATT,

a citizen of the UnitedStates, residing at 141 Commerce street, Newark, county of Essex, and State of New Jersey, have invented certain new and useful Improvements in Processes of Making Shoes for Pneumatic 'lires, fully described-and represented in the following specification and the accompanying In the present invention the coils or circular strands in such a trough-shaped shoe are first wound into the required trough shape, the coils at the edges of the trough being necessarily of much smaller diameter than those at the middle, and on account of the difference in the diameter peculiar meansis required in applying the filling to connect the strands.

In the presentinvention the trough is flattened upon a transverse line, and the coils are connected upon such line by a sewing or weaving operation which inserts the filling. Endless wire rings may be connected to the marginal warp-coils by the filling during the application of the filling. The middle portion of the war is during theapplication of the filling ,fed 'orward faster than the edges in the same proportion that the diameter of the shoe at the middle exceeds the diameter at the edges.

A strong filling is formed by a gang or row of needles operated simultaneously in a socalled zigzag-sewing.maehine, such as is described in my-Patent N 0. 708,480, granted September 2, 1902, and to facilitate the supporting and feeding of the warp-coils when applying the filling the cord to -makc the warp is preferably saturated with an adhesive composition of character suited to stiffen the warp-coils and to cement their adjacent edges together. Such saturated cord is readily coiled upon a former of suitable shape and when sufficiently hardened or sti'flencd forms 1 a' unitary structure which is readily handled and supported during the sewing operation; To sew the warp coils or strands with zigzag stitches, the strands are separated progressively by a comb upon a line across the. fiattcned portion during the sewing operation, the cementing material being preferably softened by a jet of stcanralong such line during the progress of the sewing.- which permits all of the strands or coils to remain cemented together until just before they aresewed, and thus cause the shoe to feed forwardas a unit until the strands arc thus separated and immediately joined by the zigzag stitches.

The invention will be understood by reference to the annexed drawings, in which Figure 1 is an elevation of part of a zigzagsewing machine with the flattened shoe beneath the needles. Fig. 2 is a plan of the feeding devices, with part of the stitches omitted on the sewed warp. Fig. 3 is a crosssection of a tire-shoe drawn upon a scale twice as great as Figs. 1 and 2. Fig. 4 is a vertical section 'of the sewing-machine fixtures upon the same scale as Fig. 1. Fig. 5 is a side elevation of the war in readiness for sewing; and Fig. 6 is a diagram, partly in section, showing the means for winding the saturated warp. Figs. 5 and 6 are drawn upon a scale one-half as great asFig. 4. Fig. 7 is a crosssection upon the same scale as Fig. 4 of one edge of the warp-former with the warp=guide thereon.

Referring to Fig. 6, A designates the warpformcr, and B the vessel containing "the inelted,composition for saturating the warpstrand (.7, whichunay be made of a single twisted cord, or, as shown in the figure, of a group of snail cords C, which are more readil y saturated by the composition.

Metallic guides with an elastic base D, having prongs to forin exteriornotches E, are shown upon the exterior of the forner A in Figs. 6 and 7, and the Warp coils or strands wound in the notches in Fig. 6, the guides serving to hold the strands in position with their adjacent sides in contact between the guides until the strands have hardened by the cooling of the composition, which also operates to cezncnt the edges of the strands together and form. a unitary warp.

l A conposltion like printers ink-rollers is i easily softened by heat and rapidly chills l. upon cooling, and the cord or cords may be readily saturated with such heated coinpovessel B and then through a die G upon the 1 edge of the vessel to remove the surplus coinl position.

l sition by drawing it beneath a roll- F in thesewing-machine table with the tension and The cord for the strands, whether twisted or grouped; may form all the coils continuously and spirally by winding it successively in the adj a'ceritnotches E of the guides upon the former, and the ends of the cord'are in practice extended one past the other for about twelve inches, and the sewing cor.- menced intermediate to these ends. The

coils forming the left-hand half of a warp' S are shown upon the former in Fig. 6, the

- remaining half of the coils upon the front side of the former being broken away to show the guides having the notches E. The former is in'practice made with a center por-. .tion (A in Fig. 7) which can be drawn out and with marginal sections which collapse when the center. is taken away, which perroits the former to be entirely withdrawn from; the warp when sufficiently stiffened.

When the former is removed from the trough of the warp, the flexible base of each guide (which is preferably made of sheet metal) can be bent inwardly to retract the prongs which form the notches E, and the guides are thus removed from the warp, leaving all of the strands adherent to one another excepting the short openings e, ferried by the prongs. With-a suitable composition the warp is now held secnrely in trough.

shape until the filling can be applied to con-. 'nect the strands, when the composition may be dissolved or removed from the warp by boiling in water The warp when removed from the former exhibits the appearance shown in Fig. 5, with the strands cemented "together by a composition that is suiiicientlyfiexible to permit the flattening. of the shoe for a certain portion upon the sewingonachine table, as shown in Figs. 2 and 4. Fig. 2 shows at S the normal width of the warp and MS the width produced by I nor1r.ally toward one side of the guide by a eyef spring 11'. A row of needles a is fixed to a carnor 0, which is movable across the bottom of the needle-bar and reciprocatcd by a can). N, lever P, and link Q. (Shown in Fig. 4.) The ltidik carries a stud Q, fitted within an pen the end of the carrier "0, and is thus eiiabled to reciprocate the carrier as the needle-barmoves up and down. The needles in their descent pass, as shown in Fig.

- 4, into agroove i in the bed I, and the loops d of the sewing-threads g are engaged by a loopere, which connects all of the stitchingloops u on a' lock.thread, as fully set forth in my atent No. 708,480. A presser or tension bar it is'shown extended across the flattened portion of the We. at one side of the table I and pressed ownwardly by springs h, which are adjusted by nuts 7' to vary the pressure and tension and provided with the passage t for supplying steam-jets. At the.opposite edge of the table a spindlesha ed feed-roll 7c is mounted and is rotated uni ormly during the sewing operation bya driving-wheel l- The roll has a convex sur 'face, as shown in Fig. 1, which gives it a greater diameter. at the middle than at the ends and is so roportioned as to feed the middleof the attened warp at a greater speed than ,the edges and in the same ratio as the center of the in art exceeds in diameter the edges.

An elastic pressure-roll 'r'fof concave face is provided, as shown in Figs. 2 and 4, to press the warp upon the convex feed-roll it, and the warp is thus advanced under the tension produced by the pressure of the bar hat a suitable speed-,to space the rows of zigzag stitches which are formed by the needles 0". j I

In Fig. 4 an endless coil of wire, '0 (formed by welding or soldering theends of the wire) is shown adjacent to the. right-hand side of the trough-shaped, warp and embraced in and by the stitches at the marginof the sewed warp at the left-hand side of the table I.

A row of oomb-teeth u is shown inFig. 2, extended across the table close to the row of needles to separate the warp strands, and thus facilitate thepenetration of the needles between the same and spacing and determining the exact width of thefabric. To assist in the separation of the strands and in the passage of the needles between the same, a jet of steam is shown in Fig. 4', projected from the passage t upon the needles and upon the warp adjacent to the comb.

By using an adhesive composition which is readily softened by heat and moisture for -IlO stiffening and cementing the warp-strands the compostion isreadily softened by a jet of steam, and the needles are thus enabled to operate freely, although the strands are held firmly cemented together .during their passage beneath the. tension-bar h and are thus compelled to feed forward in proportion to their distance from thecenter of the trough shaped warp. The effect of thus feeding the strands isto dispose the transverse rows of stitches a little farther apart at the middle than atthe edges of the warp as shown in Fig. 2, the stitches forming a filling which serves the samepurpose as a woven filling in uniting the warp-strands and producing a strong and firmly-united fabric. ;'lhev transverse rows of stitches may by this means be commenced at any transverse line, upon the warp which is flattened down upon the table I, the comb-teeth u being placed to apply a filling to the warp-strands to connect the same together, as the value of the product dependschiefly upon the. endless form of the warp-strands, which gives each one the same strength throughout its entire V circuit, and thus fits the shoe to resist the exwarp into trou pansive force of 'the it is distended.

pneumatic. shoe by which- The invention embracesthe winding of'the same transverse y durin the insertionof the transverse filling, whichgreatly facilitates the manufacture of the trough-shaped shoe, whether or not the strands :be cemented to-g. gether by a soluble com ositioni I ve made a specific'claim to t e troug fisha d warp having its strandsor' coils ceme ted ,to-'

. gether at thein edges by an-adhesive compo-j sition, as such a warp is thedirect prodtfct of the process when the latter includes the rise of, an adhesive com osition.

cessive rows of transverse stitches closet0- gether, a dog to is provided upon the guide M of the needle-bar to crowd the lower hinged port-ion of the needle-bar'forward whilethe dicated by dott warp-strands, as ind lines a in Fig. 4, which moves the need es toward the roll 1 and the needles are between the portion already stitched and crowds the last row of stitching firmly against those previously made. Fig. 2 shows the lastrow before pressing the same forward. Thedog 'w is mounted upon a rock-shaft having an arm w, which is oscillated by a rod m and a cam m uponthe driving-shaft K. The tooth of the cam ac gives the dog and hinged portion of the needle-bar only a brief impulse, and the needle-bar is then restoredito its normal position by the'spring'b, (shown in' Fig. 4, g

whichbacks' oil the needles and leaves the needles free to rise from the warp, -'clear of the last row of stitches. This construction moves the row of needles forciblyagainst the previously-formed row of stitches while the needles are between the strands and then removes the needles from such row to retract them freely from the spaces betweenthe strands. The lateral connection oft e strands may be made still more positive ,fore ewing bylaying a tape or tapes tr 'nsver ely h shape and flattemng the i sis'ts in To compact t e filling and crowd the sucupon the exterior of the warp while the composition is soft enough to secure the adhesion of the ta e, which is then held in position by the harrfidn'ing of the composition. -A single tape 2 may be used by laying it in a zigzag athback and forth across the outer side of t e trough-shaped warp, as shown in Figs. 4, 5, and 6, and such tape can be readily peeled off the warp as it approaches the presser h to be flattened upon the sewing-machinetable.

' t-is obvious that a circular warp cannot be' readily held in trough shape during a sewing or weavin operation nor readily operated upon unless attened and fed forward in the manner described above, and these operations are greatly facilitated by saturating the warp-strands with a substance that wi 'stifienand cement them together, while leaving a warp sufficiently flex-i le to be progressive'ly flattened as it passes over the sewingmachine table" and the strands separated just previous to the insertion of the filling.

Such a process of making the troughshapedshoe permits the use of very cheap labor'in' winding the warp in the required form and the use of automatic machinery orfapplyi'ng'the filling thereto, and thus great degree. aving thus set forth the nature of the invention, what is claimed herein is,'

1;. The \rocess of maki an endless troughshaped s trough-"shape with its. opening upon the inner side, second, flattening such trough upon a transverse line, and third, connecting the coils of the ,warp by a transverse filling.

, 2. The process of making an endless troughshaped shoe for pneumatic tires, which consists infirst winding 'a warp into circular trough'shape with its opening upon the inner side, second, supporting endless rings of rigid material, as wire, at opposite edges of the trough, third, flattening such trough transversely into line with. the-periphery of such voids the use of expensive hand-labor in a i be for pneumatic tires which confirst winding 0. warp into circular rings, and fourth, connecting such rings and the warp-coilsby a transverse filling.

3. The process of maki an endless troughshaped shoe for pneumatic tires, which consists in first winding a single continuous strand spirally into a trough-shaped circular warp, second, flattening suohtroughupon a transverse line, and third, connecting the coils of the warp by a transverse filling.

4; The'process of maki anendless troughshaped shoe for pneumatic tires, which consists in first winding a single continuous cord spirally into atrough-shaped circular warp, second, flattening such trough upon a trans verse line, third, separating longitudinally the cords of such warp transversely into a se ries of parallel groups, and fourth, connecting the cords by a transverse fillii 5; The process of making an endless trough shaped shoe for pneumatic tires, which consists in firstmoistening the circular strands ,with an adhesive cement or composition, sec' third, flattening such trough upona transverse line, fourth, separating the strands of such warp progressively upon aline across the flattened portion, and fifth, connecting such separated strands progressivelyby a transverse filling.

6. The process of making an endless troughshaped shoe for pneumatic tires, which consists in first winding the strands of'the warp into circular trough shape and cementingithe strands together, second, flattening such trough upon a transverse line, third, separating the strands of the warp upon aline' across the'fiattened portion, fourth, carrying stitching-threads between the strands thus separated and connecting the stitches be' neath, the strands by a lock-thread.

7 The process of making ;an endless troughshaped shoe forpneumatic tires, "which con-v sists in first saturating the warp-strands with asoluble composition adapted to stiffen and cementtogether the strands, second, winding the saturated warp, into circular trou h shape with its opening upon the inner side, third, flattening such trough upon a trans-. verse line, fourth, softening the cementing material upon such transverse line, and fifth, progressivelyconnecting the coils of the Warp by a filling upon such transverse line.

8. The process of making an endless troughshaped shoe fonpneumatic tires, which consists in first saturating the warp-strands with a soluble composition adapted to stifien and cement together the strands, second, winding the saturated warp into circular trough shape withits opening upon the inner side, third, flattening such trough upon a trans-' verse line, fourth, separating the strands of the warp into a series of parallel groups progressively, fifth, projecting steam against the warp along such transverse line to soften the cementing material, and sixth, connecting the strands progressively by a filling upon such transverse line.

9. The process of making an endless troughshaped shoe for pneumatic tires, which consists in first saturating the Warp-strands with a soluble composition ada ted to stiffen and cement together the stran 5, second, Winding the saturated strand spirally into a troughshaped circular warp, third, flattening such trough upona transverse line, fourth, softening the cementingmaterial upon such transverse linc, and separating the strands on such line, fifth, supporting endless Wire rings at the margin of the spftened portion, and sixth, progressively connecting such rin and the warp-strands by a permanent filing upon such. transverse line.

10. The process of making a tire-shoe with endless warp, which consists first in passing the cord for the strands through a soluble composition and through a die to remove the excess of the composition, second, winding the cordcontinuously and spirally in a serrgs of strands mto a trough shaped circular warp, with the strandscoherent at their edges, third, flattening such trough upon a transverse line, and fourth, connecting the strands progressively by a permanent transverse filhng. j

, 11. The process of making a tire-shoe with endless warp, which consists first in passing the cords for the strands through a soluble composition and through a die to remove the excess of the composition, second, winding the cord continuously and spirally in a series of strands into a trough-shaped circular warp, with the strands coherent at their edgesfthird, flattening such trough upon a transverseline,fourth,projectingsteam upon theflattened warp on such transverse line t soften the composition, andv :fifth, progressively connecting the strands by a permanent filling where thus softened.

12'. Theprocess of making a tire-shoe with endless warp and transverse filling of zigzag stitches, which consists first'ln passing the cord for the strands through a soluble composition, second,'.winding the cord continu ously and spirally, in a series of strands, into a- 'troughfshaped circular Warp with the strands coherent at their edges, third, flat tening such trough on a transverse line and supporting the flattened portion below a transverse row of'stitching-ncedles, fourth,

projecting steam upon such needles and. upon the flattened warp to soften the composition, fifth, separating the warp-strands in linewith the stitching positions of the needles, and sixth, extending zigzag stitches back and forth across the warp-strands, and connecting ,the loops of such stitches beneath the strands.

13. Th process of making a tire-shoe with endless warp, which consists in first saturat ing the cord for the war strands with a soluble composition, secon forming, such cord,

in a series of adjacent circular strands, into a trough-shaped circular warp with the edges of the strands coherent, third, attaching a tape in a zigzag path across the outer side of the trough-shaped warp, fourth, flattening such trough upon a transverse line, and .lilth, connecting the strands by a permanent filling upon such transverse line.

let. The )rocess of makin a tire-shoe with endless warp, which consists in first forming strands into a trough-shaped circular warp and cementing them together by a soluble composition, second, connecting such strands progressively by a transverse filling, and third, washing the cementing material out of the fabric.

15. The process of making a tire-shoe with endless warp, which consists in first forming strands into a trough-shapedcircular warp and cementing them together, second, flat tening such trough upon a transverse line and forming a stitched filling across the warp upon suohtransverse line, and third, feeding the warp forward with a greater speed at the middle than atthe edges of the flattened ortionywhe'reby the transverse rows of filing are spaced in accordance with the-trough shape of the shoe.

16. The process of making a tire-shoe with endlesswarp, which consists in first forming strands-into a trough-shaped circular warp and cementing-them together, second, flattoning such trough upon. a transverse line and formlng a stitched filling across the warp upon such transverse llne, and thlrd, feedlng the warp forward with a greater speed at the middle than at the edges of the flattened portion and holding back the warp with suitable tension for applying the transverse filling.

L7. The process of making a tire-shoe with endless warp and transverse filling'of zigzag stitches, which consists in first forming strands into a trough-shaped circular warp,

such row. to -retract them freely from the strands. v

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

Witnesses]: L; LEE, THOMAS S. CRANE.

continuously strands, and then removing the needles from' "second, flattening such trough oIr"a'-t1ans- JOHN WESLEY HYATT.

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