Evening Star Newspaper, November 10, 1929, Page 54

THE SU'lNDAY STAR, WASHINGTON, D. C., NOVEMBER 10, 1929—PART THREE. NEED OR RUBBER Tae Hecar Co. Chemists Develop Various ' F Street at Seventh Means of Imparting En- durance to Products. S ok \: ' ® Extraordinary D . | To find a substitute for the sun is| the task confronting the rubber indus- try in a quest to prolong the life of 3 " y rubber products, J. M. Bierer and C. C. % % E. [ 4 o Oa S Davis, industrialists, of Cambridge, Mass,, declare in a symposium on the | aging of rubber conducted by the divi- | e ' " Trimmed with Wolf The main hazards to dr‘hk‘h r!;lirlber, & t 3 ; & nods are exposed, according to Bierer | l d L §nd. Davis. are oxidation, heat efects | AN ; Caracul an apin mechanical work and sunlight. Tests approximating the effect of these fac- tors, except the sunlight, they say, have been developed to' a high degree of practical utility. A practical test to . s 4 7 5 duplicate the effect of the sun on !uchl g ° products as auto topping and bathing x caps, however, is yet to be perfected. “The more varied the uses to which rubber is put,” explains Bierer, “the more varied are the conditions under . which it ages, and the less it can be X test & 3 AT . iifi'%'fign:c:ifn&"s{ }73&'55 :ra: frions: : ; Well taflfo‘ifd of 1h:-).m:lso.me c]lpth. most T t fa ic] ro- S mote. the delerioration of rubber gbods | ‘ Coats that follow the gracious lines T idati by atmospheri %3 | > @t i ;tfe:::l::fix:at};n. mi:c“’eéncu.":ry.’c'%'. | of the new silhouette . . . low-placed SuRlight, and wear or deterioration due . flares, the new empire coat, cape coat, to mechanical work. ] wrap coat and slim, straightline Exposure of Types Differ. 8 . H 1 1 "o two types of rubber products are : modes. Black . . . ;Vl.lngh fgshrm in expose just the same way ese h 2 H T30 {arious influences, One product. may : { accepted shades. Nicely lined and » exposed to a mar] legree to only & = H 1 uni i s o3 the ilenics, whereas anoiner \ interlined. Sizes for junior misses, may deteriorate from all five influences. . r ; Thus, automobile tires undergo oxida- misses, women and larger women. tion, ' after-vulcanization, heat effects, cracking from exposure to sunlight and sbrasion and_ deterloration {rom me. | g ; . . chanical work. n the other and. 3 A | ¥ ° steam hose deteriorates predominantly | ; Other F ur Trlmmlng 8. \ from after-vulcanization and heat ef- & ; fects, oxidation, mechanical work and : L sunlight playing almost no part.” Sirce every Eind of e artle s | .Marmink (dyed marmot), === i ex] erent dangers, Bierer N etche points out, an attempt to dupiicate in Sketched = = the laboratory the different combina- by Our Staff kld Caracul, oposs“m and by Our Staff (zaum of Kflurds ml;efl wnuldtneces; g Avhi B d lf = Artist sitate a erent for every type of ist 1mn - rubber goods manufactured. This, he i po ted woll. = adds, is !.mg:nctlcll and undesirable. The artificial aging tests which have o developed up to the present time have (Third Floor, The Hecht Co.) 3 been on an entirely opposite principle, Davis reports. Chemists of the large rubber manufacturers have tried only to determine the resistance of a rubber product to the one most im- portant influence to which it is ex- posed in service. The Geer oven test, which is a heat test: the oxygen bomb test developed by Blerer and Davis, wherein rubber is suspended in bxygen at certain temperatures to approximate the effects of oxidation; the Fadeo- meter test, which is an effort to simu- late the effect of the sun, and various mechanical tests are all based on this principle. 8 4 Intensitying of Sunlight. “Thus, when bathing caps are ex- posed to a Fadeometer or to ultra-vio- let light,” Davis continues, “the idea is only to intensify greatly the action of sunlight, while oxidation, after-vul- canization and other effects are ignored. Similarly, when inner tubes are aged in the oxygen bomb, the purpose is to de- termine their resistance to oxidation and to regard the influence of heat and mechanical, wark. “Because most. rubber goods deterio- D A rate from scveral influences rather than RO P one, and because present-day aging tests o do not intensify each of the factors to 0 Ny the same degree, it cannot be ted £ \ S by that any of the aging tests duplicates natural aging. Nevertheless, where the predominant effect in the artificial test is also the predominant effect in nat- ural aging, almost the same results from a practical viewpoint are obtained. iy ~‘Tests which intensify oxidation, heat effects ‘and mechanical work have been developed to a high degree of practical utility, but it still remains for someone N i el it ing e 1 Fashion Mode New Costume AR rer and Davis, is the most recent te: many smart styles. Green, BY BERLIN CHURCH| = blvie: v sk, Al $15.00 Hats now $7.50 il Gov;‘my Boak ¢ Beg: = » heels . . . All sizes, but not $18_ 50 Hats now 39. 25 ultra-violet light tests represent at- i o) J Gl these tests do not duplicate the effects Fashlonable Shoes : oves need for an aging test that wlp approx- lanted in cases the classical geperl,' .:ven ust'.n ""lzhe m(ygene \c)d.:th largely responsible for the ability of Yibe whlch Tomainn ' Senos. coion after 20,000 miles. # kidskins, the backs chic with em- e ot Tareyer st : : $5.00 Hats now $2.50 broidered stitching. New shades ni ly in foreseein; . & of Tubber products. which deteriotate | —that form a fitting cli- " 5 rolde g these involving oxidation in darkness - T e s S| B B S T e $10.00 Hats now $%5.00 ; in every style. land Malt N ; . § § ? .(';l]d.im ';u::rexmgh" (Pifth Ploor, The Hecht Co.) “Ardsley” and “Headsize Hats” Not Included in This Sale Bpecial Dispatch to The Star. == = Also on sale e g michy exclied by Fumors 'Jf'.’.‘“é’u‘.:;'vf: = ; Hats designed for the new ©f a v ‘easure, w . . et r g'fi&%fi‘kmsfl%& by tl‘:eenctnk%é y . « . our entire line of silhouette. Hats for every ngland, e viet government ane y " - 7 ;O . ;):;!C:’r;loevl;do:nz?elotfis: h)::g]};;a ‘This famous Catalina hats at Ei‘-}pc face s K for ev ery C;‘ESIOI’If i : he season’s successes; copies o which, historically and materially, is hand of St. John the Baptist, profound- I 2 ab e d : 2 bans, eyebrow modes, interesting Hats now $3.47 iy tival. ‘There is also a plece of wood ” All these relics re) in rich golden newly built Russian church in Berlin. tempts to duplicate the effects of sun- of the sun and only give misleading re- imate the effects of sunlight.” s4 OO $ o 5'65 : With a fine feeling for the right e agreedthat Tl tess othes Toan max to the new silhouette $6.95 H $3.47 of tan, brown, or black with white. 1 . ats now . are developed the rubber industry will important products. But it is a fact that the orthodox > imports. Felts, soleils, velvet and ly venerated in Cazaristic Russia and : > BOX brim treatments . . . with just the from the sacred cross and a gl.cture of black, the high fashion “color,” as The treasure has a most romantic past. Service Coupons now $5.00 green, vintage, egg plant, gold and by Vfll’l Raalt e light, but evidence thus far shows that sults. There is, accordingly, an urgent ‘The oxygen bomb, perfected by 'Bie- note in costume smartness. Supple are agreed that until tests other than 4 (Main Floor, The Hecht Co.! remain without any means of foreseeing For sports, street and aft- SACRED IfELICS HELD = = kidskins and lizards in $12.50 Hats now %6.25 church in Berlin possesses a treasure { ) half price: s P I St | The Powder £ R o gleaming metallics. Berets, tur- thown annually at a high church fes- i i . right trim, matron hats. Many ety B Lkt Evang During This Month $10.00 Catalina g y pai B S Gives Beauty - Imported Soleil Hats well as Granada brown, English Rflyon Com ination ‘When Napoleon took the Isle of Malta, hands of the conqueror, gave it to Paul Third Floor, The Hecht Co. 1 of Russia. p,};d‘i‘;‘;‘:‘h‘%‘l};:;‘fi'm:‘gfigl? Charge Accounts Payable in January 32'00 the ghurch fest , which on 3 brought: immense crowds of pigrims to You may purchase Beauty Service Coupons L —Open an Account Now then belonging to the Maltese order, the silver. Every head size. knights, in order to save it from the $5 for s4 Gattschina near Leningrad. ~After the hagen, from where, after her death, it Beauty Work, including Permanent Waving " ! workmanship that is Van Raalte. sent to the royal palace in Belgrade. Beauty Shop, for $4.00. Good until used. Berlin, Germany, has been much in- Five 50c Manicure Tickets . . . 52 § I‘l f HFCH T () : Sizes 32 to 38. ferested in & full-sizsd dummy of a . I (Msin Floor, The Hecht Co.) woman which writes the exact repro- Powder Box—Fifth Floor—The Hecht Co. 4 i £ L - the message on & devics which thansmits the im; to revolution, the Czar's motifer rescued which entitle you to Five Dollars worth of Tailored with the exquisite assed to her d: hter Xena. Now it : E B Smooth, delustered rayon; bandeau duction of the handwriting of the robot, which in turn transfers these the treasure and brought it to Copen- temporarily in Berlin, but will be and every other type of work done in our B W top and bloomer leg. In pink only. 0Dof rites Message. gender operating some distance away. to a blackboard or chart,