US1834325A

US1834325A - Band building machine

Info

Publication number: US1834325A
Application number: US384195A
Authority: US
Inventors: John W White
Original assignee: Seiberling Rubber Co
Current assignee: Seiberling Rubber Co
Priority date: 1929-08-07
Filing date: 1929-08-07
Publication date: 1931-12-01
Anticipated expiration: 1948-12-01

Description

DEQ- 1, 1931- J. w. WHETE 395334325 BAND BUILDING MACHINE Filed Aug. '7, 1929 3 Sheets-Shem l dizhn/ WWhiZe,

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BAND BUILDING MACHINE Filed Aug. 7, 1929 3 Sheets-Sheet 2 White,

Dec. 1, 1931. J. w. WHITE BAND BUILDING MACHINE Filed Aug. 7, 1929 Sheets-Sheet 3 gwuen toa Jol WWhife,

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Patented Dec. 1, 1931 hearsesir-Ares.

JOHN W. WHITE,

PATENT esse ce or BARBERTON, OHIO, AssIGNon T semen-Line RUBBER coi'arnny, l or BARBERTOIIOHIO, A conrcnerron orpnnawann a BAND B ILD-rive MACHINE Applieation filed August 7, 1929. Serial No. 384,195. 1

. This invention relates to machines for making bands out of strips of flexible material, and particularly such bands: as are adapted for shaping and" incorporation in "5 pneumatic tire casings. i

One object of my invention is to provide an apparatus whereby" a strip of material such, for example, as cushion gum for a tire band, may be accurately and quickly wrapped upon a drum, or upon fabric already applied to the drum, in the exact length required. 1 I A further object is to apply the strip material smoothly, without wrinkles. Still further objects areto provide improved means for feeding and severing the material and for automatically connecting and disconnecting a driving device with they material feeder by the act of 'movingsaid feeder into and out of its operative position.

Of the accompanying drawings, Fig. 1 1s a front and right-side perspective view of a band-building machine embodylng my 1nv'ention in a preferred form.

view. Fig. 8 is a longitudinal, vertical section showing the work and some of the principalv parts of the machine.

"I 1 'Fig. is a detail longitudinal I section of the driving clutch; j

Referring to the drawings, 10 is a base having an upright frame standard or column 11 mounted thereon and 12 is a hori' e5 Zontalbranch or bar projectingfrom said I r I impartedto the frame 18 forthepurpose of raising the roller 1'9 away from and lower- '23, for driving the feed roller.

shaft 26 Which is mounted in a. bearing on a I Fig. 2 is rear and right-side perspective p ing it onto the'drum means of, pedal lever 20 pivoted on the'b-ase 1O andco'nnecting with the rear end of the frame 18'by means of a thrust-rod or link 21. The rear end of the pivoted frame is overbalanced so as normally to hold the feed. roller away from the drum by means "of a counter-weight mounted (on a cross platform 22connecting the side bars of the frame, the said-counter-. eight consisting mainly of anelectric motor The feedroller 19 is'drivenby meansof a belt 24 passing around one end of the roller and over a pulley 25 attached to a counterfra-me plate 27 alongside of'the motor. The shaftcarries aworm gear 28 meshing with a worm 29. on a longitudinal shaft 30' which is rotated from the shaft of motor 23 through a pulley 31 on the motor shaft, a belt 32 and a-pulley;33'- on shaft. 30. ,Pulley 33 is loosely mounted on the end of shaft 30 and is'formed withone member of afriction clutch, namely a'friction facing 34 which coacts with a comlemental clutch-plate or fiange'35 fixedto thez shaft30. 3- 1 V 1 The electric motor 23 is constantly operated while the machine is in use, and provision is made for automatically connecting itin drivingv relation to'the shaft 30 so as to propel the so I feed roller 19 through the intermediate driving connections, by the act of themachine operator in depressing said roller upon the drum 15 through the tilting of theframe 18 by meansof pedal lever 20. V Said provision consists of a clutch-operating lever 36-,pivotedat 37 on the plate 27. and formed at its outer end with a transverse, projection 38 engaging a rounded central boss 39 on the pulley 33, the inner end of said lever having an upturned projection 10 adapted to'press against a fixed plate 41 carried by astruct'ure on the column 11," there being an adjustable thumb-nut 42'mountedon a fixed screw43 passing through a hole in the lever projectiondOto act as a back-stop for turning the lever in a clutch-releasing direction. It will be evident .thatthe downward tilting of the forward end of the frame18 raises its rear end together with thefulcrum" of lever 36, thus moving forwardly the end projection 40 of said lever which is positioned above the pivot-rod 17 of the frame, so that the lever will be turned back and the projection 38 on its rear end will engage the friction clutch and set in motion the driving mechanism of roller 19, while the reverse action of lifting the forward end of frame 18 automatically disconnects the drive. g} p In the combination including these automatic parts, and in the combination including the liner-feeding devices to be later described, any suitable equivalent for the drum 15 as a band supporting means may be employed.

44 is a roll of fabric liner 44 with which is interwound a thin strip or sheet 45 of cushion gum stock for incorporation in the band which is being built upon the drum 15. The core bar 46 of said roll is removably fitted over a squared shaft 47 mounted to turn in a bearing held between a pair of blocks 48, 49, the former of which is strapped to the upper end of column 11 and the latter secured to the former by means of bolts 50. A. cylindrical extension 51 of shaft 47 forms a brake drum for said shaft which is engaged by the walls of V notch in a brake shoe 52 pivoted to the block 49, the pressure of said shoe being regulated by a. screw 53 threaded in a plate 54 and having a winged head 55' at its outer end for turning it, whereby an adjustable friction may be imposed upon the shaft of roll 44 to determine the tension on the liner 44 Supported by the blocks 48, 49 below the shaft 47 is an anti-friction bearing 56.which carries the shaft 57 of a liner rewind roll 58 whose core 59 is slipped over said shaft. That portion of the liner 44" proceeding downwardly from the roll 44 andin a bight around the rewind roll 58 serves to turn the latter and wind up the liner after the gum strip 45 has left it.

For severing the gum strip 45, I provide a rocking snubber plate 60 formed with a guide slot 61 through which the liner and gum strip pass from the rear or below as indicated in Fig. 8. The ends of the snubber plate are journaled in the side bars of an auxiliary or secondary frame 62 pivoted at 63 on the frame 18 and having a'pair of coil springs 64 adapted to engage the side bars of frame 18 at their forward ends, to yieldingly transmit the downward pressure of auxiliary frame 62 to the pivoted frame 18.

The left-hand journal of snubber plate60 has afiixed thereto an arm 65 connecting by a link 66 with an arm 67 affixed to a rock-shaft or handle bar 68 which has a'pair of hand grips 69 thereon, said rock-shaft being journaled on the auxiliary frame. 70 is a liner guide roll mounted to turn freely on afixed cross-shaft 71 supported at its ends by the side bars of the auxiliary frame.

In building tire bands on this machine, the operator is supplied with strips of carcass fabric which are placed alongside of the machine within convenient reach, and these strips are successively taken and wrapped around the drum and the ends spliced to make a band or tube, while the drum is turned by hand. The drum being of predetermined diameter suited to the particular band which is being made, said band will have the exact desired length and the same will be true of each of its component layers. Over certain of the fabric layers, it is desirable to apply a narrower strip of thin sheet rubber or cushion gum, such operation being performed by the present machine. Such a gum strip could also be laid on the drum before the laying of the first fabric ply, if desired. The fabric layers have their threads running diagonally in opposite directions in adjacent layers as usual, and successive layers may have their edges stepped in to facilitate later bead formation at the edges. The drum may have circun'iferential marks thereon to aid in accurately positioning the fabric, and the liner may be laterally shifted to center the gum strip properly as it is led onto the drum.

The parts being in the positions indicated in Fig. 1, the operator grasps the handlebar 68 to depress the auxiliary frame 62 and cause it to exert a yielding pressure on the pivoted frame 18 through the medium of the springs 64. By stepping on the treadle lever 20, the frame 18 is tilted to bring the feed roller 19 down upon the drum and to connect the motor 23 with the roller-driving mechanism through the friction clutch 34, 35. In drawing down the auxiliary frame 62, the shaft 68 will at the same time be turned forward by means of the hand grips 69 to straighten the slot in the snubber plate 60 and permit the feeding of the liner 44 and gum strip 45. The gum strip tends to leave the liner and follow around the feed roller 19 and may, if necessary, be started around by hand. Both the drum 15 and the liner guide roll 7 0 are driven by the feed roller 19 through the medium ofthe intervening sheet material, and the feeding pressure may be adjusted to the exact degree required by' pressure of the operators hands on the rockshaft 68 transmitted through the auxiliary frame 62 and the springs 64 to the tilting frame 18. This arrangement and mode of operation permits the gum strip 45 to be evenly and smoothly wrapped and rolled upon'the drum 15 and caused to adhere to the adjacent ply of fabric without wrinkles or the pocketing of air, the results being much superior to those attained with a positivelydriven underlying drum or roller.

When one wrap of the'gum strip is nearly complete, the operator rotates the rock-shaft 68 by means of the grips 69 in abackward direction to turn the snubber slot cross-wise frame-to discontinue [the pressure of roller 1 1'70 :on roller 19, and turns it back to the position .shown in Fig. 1.

The continuing forward movement of the gum strip in response to the feeding action of .the roller 19 causes said strip to be broken 05 from the part remaining .on the liner, at

.roller for applying a rotatingforceto the a point in the rotation of the drum judged by the operator to be sufficient to complete the wrap with .a small margin for a lap splice. The pressure of roller 19 may be continued long enough to complete and roll down the wrap, after which the pedal 20' is released to allow the frame 18 and feed a roller 19 to resume their inoperative positions and automatically disconnect the feed ing action of the antecedent bight of the liner in the manner indicated.

After the tire band is completed, the drum 15 with the band thereon is removed from the machine by slipping its shaft 14 out of the bearing 13 and carried to a tire-building machine to be transferred onto the drum of the latter, but this feature is not claimed as a part of my invention. 7

It will be understoodthat the described embodiment is capable of'rather wide variation without departing from the principles of my invention as defined in the claims. I claim: 7

' 1. In a band-building machine, the com bination of a freely rotatable band-sizing and building drum, a power-driven feed roller, means for suporting a. roll of liner and sheet gum in position to be led over said feed roller to apply the sheet to. the

drum or to material thereon, whereby also.

the drum is rotated from the feed roller through the liner and gum sheet, and a liner lrewinder.

2. In a band-building machine, the com bination of a freely rotatable band-sizing and building drum, a power-driven feed roller mounted for movement toward and from said drum for applying material to and rotating the drum, and means for sup 7 foted frame, a feed roller carried by the carried by the frame for rotating the feed swinging movementof saidframe into and out of coactlon with sald drum, means also roller, and means for supplying strip ma- .iterial to said feedwroller for application by it to the drum=.; I r l 4;. In a band building machine, the combination of a freely rotatable building drum, afeed roller mounted for positioning move-' :ment toward and away from said drum .for

driving the latter and applying strip .ma-

.terial thereto, and meansautomatically controlled ;by the positioning movement of said roller when it is moved toward the drum and removing said force when it is moved .bination of band-supporting means, acoact ing feed roller, a pivoted frame carrying said roller,-drive mechanism'carried by. the

frame for rotating said roller, a motor car- 1 tried by said frame and connecting with said drivemechanismthrough a friction clutch, and" means operated by the tilting offsaid frame for actuating said'c'lutch when the-frame is movedto carry the roller toward the bandsupporting 'means, and releasing it when rnoved in the opposite direction.

-6. In a band-building machine, the comb natlon of band-supporting means, aco- --acting power-driven feed roller, means for.

supplying strip gum on aliner to said feed roller for application to a band on said supsporting means, and a guide .roller driven by said feed'roller through the gums-trip and liner for propelling and guiding thefliner during; its separation from the gum -.s trip and after it leaves the latter; j

'7. In a band-building machine, the com bination of band-supporting means, afstrip band-supporting means, a liner guide roller coacting .with the feed;roller.,-and asupport for said guide roller 'adjustableitoipress said rollers into vcoaction with each other andthe feed roller into coaction with-th bandesu pporting means. a a

8. In a band-build ng machine, the coin- .bination of band-supporting means, 2L':CO-

justably mounted on said roller; frame, a

, feed roller coacting therewith, adjustable supporting means forsaid roller to move it into and outof-operative relation. with Sit-ldqi a 7 liner guide -roller carried by thesecondary frame a-nd coact-ing with, said feed roller,

and .a yielding connect-ion between said frames. f 9. In a band-budding machine,]-the com bination of band-supporting means, api-vota-l frame a ower-driven stri "feed-roller carried by arsaid frame for driving the bandsupportmg means, asecondary framepivoted on the first said i'framm and a liner guide 7 roller carried "by said secondary name; and adapted to"'.=be'=d'riven by'saidfeed "roller.

In a hand-building 'machine,'ithe combination. of a" freely rotatable -:;building gum strip material.

drum, a pivoted frame, a feed roller mounted on said frame above the drum for rotatting the latter, roller driving mechanism mounted on said frame, means for supplying strip material in a liner to said feed roller, a liner guide roller adapted to be driven by said feed roller, a secondary frame pivoted to the first-said frame and carrying said guide roller, and revvinding means for receiving the liner from said guide roller.

11. In a band-building machine, the combination of band-supporting means, means for supplying gum strip material in a liner to said supporting means, and snubbing means for arresting the liner to sever the 12. In a band-building machine, the com bination of band-supporting means, means for supplying thereto gum strip material in a liner, a slotted snubbing guide for the liner and gum strip material, and means for rocking said snubbing guide to arrest the liner and sever the gum strip'material.

13. In a band-building machine, the combination of band-supporting means, a coacting strip feed roller movable toward and away from said means, a liner guide roller, a pivoted frame carrying said guide roller for moving it into coaction with the feed roller and the latter into coaction with the band-supporting means, and a rocking snubber mounted on said frame for arresting the liner and severing the strip material,

14. In a band-building machine, the combination of a freely rotatable building drum, a pivoted frame, a power-driven strip feed roller carried by said frame, for rotating the drum, means for supplying strip material in a liner to said roller, a liner rewinding device, a liner guide roller adapted to be rotated by said feed roller, a secondary frame pivoted to the first-said frame and carrying said guide roller, a snubber journaled on said secondary frame for arresting the liner and severing the strip material, and a rockable handle-bar journaled on said secondary frame for moving the frames to bring the guide roller into coaction With the feed roller and the latter into coaction With the drum and having connections for turning said snubber.

15. In a band-building machine, the combination of a freely-rotatable band-sizing and building drum, means for applying a gum strip to said drum and rotating the latter through the interposed strip, and strip-supporting means driven by the gumapplying means through the interposed strip for carrying the strip to and applying it upon said gum-applying means.

16. In a band-building machine, the combination' of a'freely-rotatable band-sizing and building drum, a power-driven feed roller for applying a gum strip'to said drum and rotating the latter through the intervening strip, and means including a mating roller driven by said feed roller through the intervening strip, a liner and gum-strip supply roller, and a liner rewind roller spaced from said matingroller for leading a liner and gum strip to said feed roller and applying the strip upon the latter and for thenreturning the liner around said mating roller to the rewind roller.

In Witness whereof I have hereunto set my hand this 12th day of July, 1929.

7 JOHN W. WHITE.