US1358805A - Tire-casing spreader - Google Patents

Description

|. A. WEAVER AND R. G. STOEHR. TIRE cAsmG SPREADEA.

APPLICATION FILE-D OCT- I319l9. 1,358,805.

Patented N ov. 16, 1920.

3 SHEETS-SHEET l.

l. A. WEAVER AND R. G. STOEHR. TIRE CASING SPREADER. APPLICATION FILED ocT. I3, I9I9.

Patented Nov. 16, 1920.

3 Sl'IEETS--SHEETv 2.

|. A. WEAVER AND n. G. soEHR.

TIRE CASING SPREADEH. APPLICATION FILED ocT.13, 1919.

1,358,805. Patented Nov. 16, 1920.

. a SHEETS-SHEET a.

UNITED STATES PATENT OFFICE.

IRA A. WEAVER AND RoLLA G. s'roEHR, oF SPRINGFIELD, ILLINOIS, AssIGNoRs To THE WEAVER MANUFACTURING COMPANY, or SPRINGFIELD, ILLINOIS, A coRro- RATION 0F ILLINOIS.

Application led.' October 13, 1919.

` To all whom t muy conce/m:

inner surfaces for the discovery of defects,

injured parts, or the presence of foreign bodies, such as tacks, pieces of glass, etc. In addition the device comprises a form-block over which the casing or shoe maybe opened or turned more or less inside out exposing its inner surface and making it available for buiing or other operations, such block being capable of attachment to the tire-shoe and of removal from the machine therewith.

In order that those skilled in this art may',

have a full and complete understanding of the structural and functional advantages ot an appliance embodying this invention and in order that theattainmeHt of these and other desiiable objects may be indicated, in the accompanying drawings we have illustrated a preferred embodiment of the invention and throughout the various views of these drawings like reference characters referto the same parts.

In these drawings:

Figure 1 is an end view of the apparatus, with parts broken away, showing a portion of a tire-casing held in spread lcondition over the form-block by means of 'retainers or holding appliances associated with such block;

Fig. 2 is a pla'view of the machine with the form-block removed;

Fig. 3 is a fragmentary Vvertical section on line 3--3 of Fig. 2 illustrating the spreader hooks in tire engaging position and the curved form-block in place, the figure4 also showing the manner in which the appliance spreads or opens up a tire-casing over the form-block, the view in dotted lines indicating the manner in which an unspread TIRE-CASING SPREADER.

Specication of Letters Patent.

Patented N ov. 16, 1920. Serial Nl'o. 330,451.

casing is supported on anti-friction rollers for turning to bring a new portion of the shoe Into position for spreadlng;

p F Ig. 4 is a fragmentary plan view illustrating the action of the spreader-arms and their hooks;

F ig. 5 isa longitudinal section on line 5- 5 of Fig. 4 showing a portion of the tirecaslng opened up over the form-block and the retainers pushed in to fit over the edges of the casing; and y Fig. 6 illustrates the form-block removed from the machine while still fastened to a section of the tire-casing. A

Referring to these drawings it will be perceived that a longitudinally and transversely curved or rounded top plate 20 is supported on the upper ends, of four inclined support- Ing legs angle-shape in cross-section and connected together at the rear of the applianceby an angle-bar 25 and at two sides by straps 26, 26, of which only one is illustrated in the drawin s. l

At the, front of the machine the legs 21 and 24 are connected together by crossed diagonal bars 27, 27 which at their intersec-4 tion supporta depending stationary ratchet or toothed bar 29 employed `for a purpose hereinafter' indicated.

At its two ends the curved plate 2O has two pairs of outstanding, fiat-top rojections or lugs 30, 30, shown-most cleariy in Figs. 2 and 5. Such bent` or rounded plate 20 has a central aperture 31 therethrough of the peculiar shape and form indicated in Fig. 2, which provides four arts 32 for the ready accommodation of a ike number of anti-friction wheels or rollers hereinafter described.

By means of two vertical bolts 33, 33, extended downwardly through holes in the lower walls of two side depressions 34, 34, formed midway of the length and at opposite sides of the plate 20, a'downwardlybowed yoke is fixedly secured in position. Such supporting yoke or saddle is equipped with a central. npstanding, apertured boss 3G slidingly accommodating a vert-ical rod end of a coil-spring 38 connected at its lower end to a foot lever of pedal 39 fulcrumed centrally of the appliance on a bracket 40 mounted midway on the connecting bar 25 ot the frame, the front end of such lever Aor pedal having a forwardlyextended foot-piece 4l equipped with a loop portion 42, shown inv dotted lines in Fig. l, encircling the notched bar 39 to limit the extent of lateral movement of the footpiece from the toothed edge of the notched bar, an edge of the foot-piece 40 by sidewi'se shifting of such element being adapted to engage any one of the notches of the bar 29 and hold the pediil or lever depressed with the spring 88 in extended condition. At its top end this rod 37 has acarrier 43 ixedly mounted thereon, such element having two cross-shafts 44, 44, at its opposite ends carrying four anti-friction rollers or wheels 45 free to revolve thereon, such rollers occupying the spaces 32 of the main aperture 3l. Interposed between the top face of the saddle 35, surrounding the boss 3G, and bearing at its upper end against the member 43, a coil compression-spring 46 is employed to normally maintain the member 43 in such position that its rollers will be in the elevated position shown in dotted lines in Fig. 3.

he apparatus includes in addition the longitudinally and transversely curved form-block 47 shaped on its under face to conform substantially to the `form and curvature of the top face of the element 20. lVhen on the machine, this form-block 4T has recesses or sockets at the ends of transverse ribs 48 which receive the upper porend of the block being in staggered relation so as not to conict with one another, as is clearly shown in Fig. 4. Each of the clamps or slide-bars at its outer end has an inturned hook-portion 52 adapted to engage over the edge of the spread tire-casing and hold it firmly and securely to the form-block.

T o spread or open up the tire-casing over the form-block the 'following instrumentalitics are employed:

At 60. G0. two substantially right-angle arms or elbow-levers 6l and G2 are fulcrumed on depending flanges on the yoke or saddle element 35, each of such arms or levers being connected by a link 63 or 64, as the case may be, to the central portion of the foot-lever or pedal 39. At its outer or upper end each of the arms 6l and 62 has hinged thereto at 65 a supplemental arm 66 having a flaring or biturcated portion 67, each 4end of which terminates in a hooker catch 68 adapted to engage over the corresponding portion ot' the tire-casing near its bead or margin. ln order to yieldingly hold each of such arms 66 to its work, it is connected by a coil contractile spring 69 and an associated bent link 70 to the elbou7 portion of the corresponding bent lever 6l oi 62. rhe degree or extent of outward swinging of each element 66 with relation to its supporting arm to which it is fulcrumed when in idle or inactive position is limited or restricted by `a laterally-extended lug or ear 7l designed to engage the outer face of arm 6l or 62, in which position of the parts the bent link 70 extends around and beyond the center of' the fulcrum pin 65.

The operation of the appliance occurs substantially as follows: A

Conceding that the tire- casing spreaderarms 66, 66, are thrown back into the inoperative position indicated in F ig. 1 in which position-they are yieldingly maintained by reason of the actioniof' their springs 69 andbent or curved links 70. that the foot-lever or pedal 39 is in normal elevated position, and that in addition the form-block is in place on the appliance with the anti-friction rollers prpjecting upwardly through its apertures, th pneumatic tireeasing or shoe to be examined is put in place in upright-position on the elevated four rollers as shown in Fig. 3, whereupon the arms 6G are swung inwardly, to hook over the bead portions of the casing. These arms are vslightly oi'set 'so that the hooks or catches 68 will not vinterfere with one another. Thereupon the operator with his foot depresses the lever or pedal 39 which rocks the arms 6l and 62-downwardly and outwardly causing a similar movement otl the spreader hooks and the effective opening up of the casing over the form-block, as shown in Fig. 4. During the descent of level' 39 the spring 3S vieldingly pulls the rod 37 and the anti-friction rollers 45 downwardly against thev normal lifting action of spring 46 so that in the spread or opened condition of the casing over the form-block the rollers will be completely or almost completely depressed to the outer or upper surface of the form-block. and in this way automatically recede out of the way for the performance of the spreading operation.

Assuming that the injury to the tire-casing is not exposed by such spreading action. the operator releases the pedal B9 from the notched-bar 29 and the spring 38 immediately swings it upwardly, thus permitting the spreaders to swing inwardly and upwardly and at the same time permitting the rollers 45 to rise so that as soon as the hooks 68 are released from the casing the latter may be turned around somewhat while resting on these projecting or elevated rollers. to bring a new portion of the same into posi tion for action of'the spreading means thereon. Thereupon the hooks 68 are again applied to the casing and the lever 39 again depressed, thus opening up the new portion of the casing for inspection. Assuming that this part of the casing is injured and requires bufling and repairing, while the spreader still holds the casing in open relation, the catches 50, 50, of the form-block are pushed or slid inwardly so that their hook portions 52 engage over the marginal or bead parts of the casing. Thereupon the spreaders 66, 66, are released by the elevation of the pedal 39 and swung outwardly by hand into inoperative position, the casing being held or retained in expanded or opened condition by reason of the action of the catches or hooks 52. Then this casing with the form-block thus attached thereto, as shown in Fig. 6, may be wholly removed or detached from the appliance and the inner surface of the casing bufi'ed or otherwise treated as may be necessary. This operation having been completed, the form-block with the casing still attached thereto, is replaced on the machinethe spreaders brought into position and swung downwardly and outwardlyby depressing the pedal, and then the catchesl 50 are slid outwardly, Whereupon the spreaders may be released from the casing, being first permitted to rise by the release of the pedal` It is to be understood that the rollers or wheels 45 not only perform the function of anti-friction means on which the tire-casing rests, but by reason of their lateral spaced relation they also act to center the tirecasing with respect to the spreader-arms.

While one embodiment only of the invention has been illustrated and described in detail, it will be understood by those skilled in the art that it is susceptible of a variety of embodiments differing more a tire-casing partially inside out over such block,eantifriction means mounted to normally project above the face of said formblock tov facilitate turning of a tirecasing thereon to bring new sections thereof into the field of action of the spreading means and to recede to permit the part of the casing operated upon to conform substantially to the surface of the `form-block, substantially as described.

2. In a tire-casing spreader of the character described, the combination of a formblock, a support therefor, means to spread a tire-casing partially inside out over such blockjand four longitudinally and transversely spaced anti-,friction rollers mounted to normally project above the face of said form-block to support and facilitate the4 turning of a tire-casing thereon to bring new sections thereof into the field of action of said spreading means and to recede to permit the part of the casing operated upon to conform substantially to the surface of the form-block, substantially as described.

3. In a tire-casing spreader of the character described, the .combination of a formblock, means to support the same, means to spread a tire-casing partially inside out over such block, and yieldingly supported anti friction means mounted to normally project above the face of the form-block to facilitate the turning of a tire-casing thereon to bring new sections thereof into the field of action of the spreading means and to recede to permit the part of the casing operated upon to conform substantially to the surface of the form-block, substantially as described.

4. In a tire-casing spreader of the characterdescribed, the combination of a support, a form-block thereon, spreader means adapted to turn a tire-casing partially inside out over said block, operating means for said spreader means, anti-friction roller means mounted -to normally project above the face of said form-block to facilitate the turning of the tire-casing thereon to bring new sections thereof into the field of action of said spreader means, and means actuated by said operating means to depress said anti-friction roller means to permit the part of the casing operated upon to conform substantially to the surface of the form-block, substantially as described.

5. In a tire-casing spreader of the character described, the combination of a support, a form-block thereon, hook-shaped spreader means adapted to engage over opposite edges of a tire-casing and turn it partially inside out over said block, operating means for said spreader hooks, an anti-friction roller mounted to normally project `above the face of said form-block to facilitate the turning of a tire-casing thereon to bring new sections thereof into the field of action of said spreader hooks, and means actuated by said operating means to depress the roller to permit the part of the casing opdescribed.

j 6. In a tire-casing spreader of the character described,- Ythe'combination of a support, a form-block thereon, spreader means adapted to turn a tire-casing partially inside out over said form-block, operating means for said spreader means, anti-friction roller means mounted to normally project above the face of the form-block to facilitate the turning of a tire-casing thereon to bring new sections thereof into the field of action of said spreader means, and a yielding connection between said anti-friction roller means and said operating means andi actuated by the latter to depress such antifriction means to permit the part of the casing operated upon to conform substantially to the surface of the form-block.; substantially as described.

7 In a tire-casing spreader of the character described, the combination of a support, a form-block thereon, hook-shaped spreader means adapted to engagefover oppbsite edges of a tire-casing and turn it partially inside out over said form-block, operating means for said spreader hooks, an antifriction rollerl mounted to normally project above the face of said formeblock to facilitate the turning of a tire-casing thereon to bring new sections thereof into the field of action yof said spreader hooks, anda yielding connection between said antifriction roller and said operating means and actuated by the latter to depress the roller to permit the part of the casing operated upon to conform substantially to the surface of the form-block, substantially as described.

8. In a tire-casing spreader of the character described, the combination of a support, a form-block thereon, spreade'rmeans to tajlrn a tire-casing partially inside out over said block, operating means fitr said spreader means, an anti-friction relier, a spring normally projecting said rollerabove the face of the form-block to facilitate the turning of a tire-casing thereon to'bring new sections thereof into the field of action ofsaid spreader means, and a spring connection between said roller and operating means adapted during the actuation of said operating means tol overcome the action of said first spring and depress the roller to permit the part of the tire-casing operated upon to conform substantially to the surface of the form-block, substantially as described.

9.,.In a tire-casing spreader of the character described, the combination of a support, a form-block thereon, hook-shaped spreader means adapted to engage over opposite edges of a tire-casing and turn it partiallyinside out over said block, operating means for said s reader hooks, a, carriage, a plurality o' spaced anti-friction rollers mounted on said carriage, a spring normally pressing said carriage upwardly to project the rollers above the face of the form-block to support and facilitate the turning of a tire-casing thereon to bring new sections thereof into the field of action of the spreader hooks, and a spring connecting said carriage and operating means adapted during the actuation of the latter to overcome the action of said first spring and depress the carriage and rollers to permit the part of the tire-casing operated upon to conform substantially to the surface of the form-block, substantially as described.

10. In a tire-casing spreader of the character described, the combination of a support, an apertured form-block removably supported thereon, spreader means adapted to engage over opposite edges of a tirecasing and turn' it partially inside out over said block, operating mea t, for said spreading means, an anti-frlction roller mounted to normally project through the aperture of and above the face of said form block to facilitate the turning of a tire-casing thereonto bring new sections thereof into the field of action of said spreadermeans, and means actuated by said operating means to depress the roller to permit the part of the casing operated upon to conform substantially to the surface of the form block, substantially as described.

1l. In a tire-casing spreader of the character described, the combination of a support, an apertured form-block removably supported thereon, a spreader means adapted to engage overopposite edges of a tire-casing and turn it partially inside out over said block, operating means for said spreader means, a plurality of yieldingly mounted anti-friction rollers normally projecting through the apertures of and above the face of said form-block to facilitate the turning of a tire-casing thereon to bring new sections thereof into the field of action of said spreader means, and means actuated by said operating means to depress the rollers to permit the part of the casing operated upon to conform substantially to the surface of the form-block, substantially as described.

12. In a tire-casing spreader of the character described, the combination of a support, an apertured form block removably mounted thereon, hook-shaped spreader means adapted 'to engage over opposite edges of a tire-casing and turn it partially inside out over said form-block, operating i means for said spreader means, a plurality of longitudinally and transversely spaced anti-friction rollers, a spring normally yieldingly holding said rollers in elevated position projecting upwardly through the apertures of said form-block and adapted to facilitate the turning of a tire-casing spreader thereon to 4bring new sections there of into the field of action of said spreader means, and a yielding connection between said anti-friction rollers and said operating-means adapted during the actuation of the latter to oyercome the action of said first spring and depress the rollers to permit the part of the tire-casing operated upon to conform substantially to the surface of the 10 form-block, substantially as described.

IRA A. WEAVER. ROLLA G. sToEHR.

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