US836083A - Process of manufacture of articles in rubber and for their repair. - Google Patents

Description

PATENTED NDV. 2G, E136.

S. Si; F RTGLS EN RUBBER AND FR. HBIR REPAR.

PRGESS OF MANUPAGTURE 2 SHEETS-ESE? 14 2 mmamxmmmm No. ass-83. Y Y j PATENTS?) Nov. 2Q, ms,

' A. s. BGWLBY. Y PRocBss @F MNPAUTURB 0F ARTIGLES m RUBBER ,um FUR THEIR mmm.

PPLGATIOR FILED JENE 39, 1965.

E SHEETS-SHEET 2V ums hun m, zum hmmm n L lio inoval from the wheel, and Fig. 7 shows any applieation of the process to thc repair of the so e of a boot.

In Fig. 1 there is slidin p iston b, to' w b an piston-head b3, there being interposed between a and b a helical spring c, which cup c, fitted with a i tends to force the piston b to the inner end l liquid and applied to the L required to be produced is tem oraril P ofthe cup. The rim of the cup a is adapted to lit into a recess formed in a second cu d, which contains a die-plate e, whose su ace carries the negative o the pattern required to be produced. The required pressure is effected by* meansof a press consisting of a base-plate an arch g, andscrcw h.

A sufficient quantity of the rubber frag-` ments to reduce the required article are inserted eit ier in the cup d or cup a, or in both, and immediately after wetting the masswith the vulcanizing liquid pressure is applied by means of th tained by means of the interposed spring c.

A convenie' t form and method of production of the ru l ber fragments is that of threads produced by c 4tting .up thin rubber sheeting. A mass ol suchl thread-shaped fragments can be sustained within the cu a by means of two or more rubber ban s made of the threads, which bands are stretched over the up er surface of the cu Vand beneath the ho low. The cup containing such a mass can be dipped into a vessel `of the vulcanizing die without delay.

44Referring next to Fig. 2, -i' is a chamber into which the semiliquid mass of fra ments of rubber or rubber compound and vu caniz ing and iiuxin liquid is adapted to be forced from the cham er y of a screw-press. From the chamber 'i'. ari-annular escapepassage 1c is provided frmed between a'ii'external die-tube m and an internal die-tuberi. The tube m is secured to the bottom of the chamber 'i'. by means of a nut o, and the internal die-tube n is secured to the cover of the chamber fi in such a manner as to be truly concentric with the tube m. To insure this result, a short length of metal tubing of the same diameter an thickness as that of the rubber tubing interosed between the lower en s oft e dietubes m and 1i previously to tightening the to theA cham er and its cover, respectively. This .tubular distancepieceis leftin lace to be thrust'out by the squirted tube o -rubber,"after which the preceding ortion ture w l serve to lmaintain the die-tubes connection of each truly concentric `with one-another. When start' the operation, the airin the chamr-bers is evacuated. throughlthe 4orifice p, I

v'be maintained b ich is secured the rod e screw h, a pressure being main-` of the tube under manufacwhich is afterward closed by the cap q. Continuity in carrying ou't the process may providing a feeding vessel r, into which a ditional material is placed and drawn into the chamber j of the screwpress bv reversing the movement of its pison. of divided rubber and vulcanizing liquid 1 stop-cock s is closed. To more eiectually keep u the continuity of flow, the screwpress s'iown can be duplicated. The effect of n iixing the fragments of rubber with the fluxmv and yulcanizirig liquor and iorcing the mixture through the annular assage between the die-.tubes 1n and n will e to cause it to consolidate and form 4a continuous seamless tube. The tube. of rubber will emerge from the spaee'between the die-tubes in. a somewhat sticky condition in company with bisulfid of carbon or other solvent. For the purpose of removing the solvent from the interior of the tube a current of warm air is introduced by the pipe t and permitted to escape through a constricted openin'g in the plug uofa stopper v at such a rate as to keep the rubber tu e under manufacture from collapsing, and the stream of air may convey chalk or other suitable dust to destroy the sticky condition of the interior surface of the tube. By means of a suitabl modified form of this apparatus inwhich tlie interior die-tube n is omitted threads of rubber may be` manufactured of 4any transverse section by the process of extrusion.

Reference is next made to Figs. 3 and 4, wherein is shown a. sim le form of mold for consolidating avmass of y 'videdrubber under i pressure into a globularsha e; but the proc` ess herein exemplified may e applied to the production in rubber or rubber compounds of an object of any desired configuration.`

To permit of the removal of the mo ded article, the mold is made in two se arable halves which are united by screw-bo ts w w. The halves are caused to register together by means of acentering-ring ic, formed on one and a corresponda recess formed in the other. The materia is introduced by means of a screw-press like that shown in Figo2, and preferably, but not necessarily, m below u warl the air `being allowed to escape t rough an orifice which is subse quently close by escrow-plug y.'

The remaining figures refer to means for permanently filling cavities.

In .5and7,asinFig.1,thereisacup a, fit with asliding piston l, to which is secured the rod b' solid rods or Iand Vpiston-rod head b.

reviously to taking in a fresh charger IOC iso

there being inte 'osedv between a and b'a helicalrsp cw tends to force the pigi ton b'to the 'inner end of the cup. `There is also provided come convenient form opress whereby with a screw or otherwise a ressure may be applied to force the cupi'an the 35 Y o' lief oups ef eer-responding eines end sispes ere eesese piston contained therein against tbe surface l v Whieb is required te be repaired by filling the Vcommes or cuts which it may oontsin.

nrEig. 5 the press comprises sill erehrgefrhe" A two ebutrnent's of Whieh ere adapted to be fastened te the :rim of the wheel by the Y' straps g g', e thumb-screw k being fitted et the center of the eren. The surface to be mended been cleansed and prepared, as before deserrbed, andthe eren strapped to v the Whee in the suitable osition, the eup e;

detached from sire press, is fed with rubber Y fragments, end rnmedistey after wetting the fragments with the vneenizing iquid` the nioutb of the snp is e plied to the 'wound end Y the pressure epped y rneens of the thumbserew, There-Koerse bisuiid will @one et; the

oints er be temporarily absorbed by the snr'- Y rnass is obtained by the combined e'eors of Y f Ieleirn-T the deeotion of the bottom of the en 'ewerd the meterie to be repaired en the eastie deformation of the materiel which becomes temporery squeezed inte the esp. To'permit of the stopping and riding eertiee of serions sizes and shapesg e series provided.

1. A recess for obtaining e concrete mess of conso ldated vulcanized-rubber'oompound,

in which rubber is reduced to fragments of 'which esuffeient quantity for the purpose is wetted with e vuoenzing iqud and forced into pressureeonteet. v

2. A process for ebtsimng s concrete mess of vulcanized-rubber eornpound eonsoideted ee eregniredeengnretion, in which rubber 1s redueedlsorsgrnents, of which s. suelent quentityfor'fihe purpose is wetted with e vueenizingfiqind Ysnr-drforced into pressure i' eontesefeVV Y Y Y I Y Y i 3.V A recess for obtaining s concrete mess of senso delted vnlesnsedeubber compound in which rubber isV reduced to fragments ei which a sueient quantity for the purpose is wettedwiigh n vuloanizing liquid end forced Y irggpressnreleentset by eonstreint within e eerie?. i '4. A of vueenized-rnbber compound eonsolideed Ysegsreqnired conguretion, in which rubber 1s redeeelY ino fragments of which sstnueient for the purpose is Weted e g quid end forced inse pressureeonisee sie eepstreint Within s esvty.

5. A preeessfer obeinng e eener-ete mess YofY rneenieedrubber compound eonsoideted nreigniredveongnreen, in whieh rubber rs r nes-ditoV fragments of which e sueient rnnnntijr'for'the purpose is wetted with e reeenizing Iiquid end foreed into constraint siennes esvity whose boundary, with which the rubber fragments make terminal contest, determines the eonV ration effected end maintained under en estieellynpplied pressure. Y

6. .A process forebtsning s concrete mass Yof eonsoideeed veeenized-rubber eernfeennd to ermsnently essere? eY eevty, in which rnb er is redeeedVV ee fragments, of Whiehe ssiieieneqnnntityfor the per ose is wetted with s vnlesniningiqnid and porsrilyanppied esstio pressuret 'n'tesriinony whereof 1 have signed my' neme to tbisspeeieetion in the pressure of two subsorfbmg witnesses,

ARTHUR SYDNEY BOWLEY.

Witnesses inosres ALFRED HEARSUN,

Nemen J. SKERTEN.

process for obtaining e concrete :mess l i n eroe-d into tbe f cavity and meintsined ther-ern under s. isern-Y

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