Norwich Bulletin Newspaper, October 22, 1919, Page 11

over fires pvaim nussy = s | After rubber is skim- ned from the congeal- 5l . ing vats it is dried E ) thoroughly before be- 2 ing baled or boxed for 4 shipment. Plantation ’ = s 'ubbbber reaches the ~ : b Many methods of 1. rubber trees 5 ;actznma::fi.cmr" i 3 an mfilonl by different growers. ¥ - : ably the most scientific is the her- H . nnzbnn method used by this native girl -1 r , toextract the milk> 052 the tree. ’ [ 3 3 1 1s mixed and bahed like bread to make good bread, so only good quality rubber will make good heels. But good bread depends upon more than good flour—it depends on the dough, or the mixture of -~ flour with other ingredients. It is the same with rubber heels. Rubber itself is an elastic, resilient substance derived from the milky juice of certain tropical trees. -In its crude state it is not at all suited to practical use. Heat and light are its natural enemies. 1t becomes soft and tacky in hot weather and stiff and brittle in cold. Only by m:xlng it with other mgledlents, and then “curing” or baking it under pteuum can rubbct be made really useful. JUST as good flour is necessary 3 are stamped out uf rubber dough or “com- pound”’ in the exact size fo fit the moulds. Then they are put into the moulds and baked under pressure. The mixing or “compounding’ process is not the same, however, for all articles made of rubber. Each of the 30,000 dif- ferent rubber products in use today must 55y have individual characteristics to meet Rubber s not alivays resili- The difference between ordirary rubber heels and O’Sullivan’s Heels ' The sPRINGINESS and DURABILITY of a rubber depend on the pouGH, or “COMPOUND” the use for which it is intended. One must be hard as in pipe-stems and combs, another soft and spongy as in pencil erasers. Ofie must endure steady pressure, another continuous pounding. Still others must withstand the grind of abrasion. The final character of any rubber article depends upon its “compound”. In per- fecting the ““compound” the rubber chem- ist works backward. He first determines the use to which the article will be put, and the work it will have to do. Then he chooses from among a hundred varieties of rubber and thousands of compounding ‘ ingredients until, by experiment, he has established the correct ‘“compound™ for the required use. Why O’Sullivan’s Heels have so muck “life” conditions—put an exacting the “compound”’. O’Sullivan’s Heels must have both roszlmnqy and durability— the springiness to endure continuous pounding, and the toughness to withstand daily grmding on hard pavements, shown at ‘To secure the resiliency and durabilit of O’Sullivan’s Heels the highest of rubber are combined, by a special 1 ess, with the best toughening known. The “compound”’ is next rolled into long strips and the heels stamped cut just as biscuits are cut. Then the h are placed in moulds and baked in v izing presses the exact length of time effect the “cure”. It is this special process of mixing a baking that has, since the making of first rubber heel, established O’Sull; Heelsasthestandard ofrubberheel quality. Guaranteed to outlast any other heelk O’Sullivan’s Heels are guaranteed to wear twice as long as ordinary rubber heels; and will outlast three pairs of leather heels. O’Stflhmnfide!a—nowmnv?sanirec-_ S35 sh Sl T . L o asa necessityof ci 0 to your shoe repairer today and have Why “compounds differ ognined 588 practical tydmajl;fi:mgpon O’Sullivan’s Heels put on your sh O’Sullivan’s Heelsare furnishedint white or tan; for men, women and c dren. Specify O’Sullivan’s Heels; and sure that you get O’Sullivan’s—avoid disappointment of substitutes. If an O'Sulliven Heel is cut along the side, as the right, so that a thin strip of rubber is Teft attached at one end, that strip will have great —itcan be stretched several inches. With an ordinary rubber heel the material snaps in two before it has stretched to any great degree. m An-u--hlm:wn ken a pipe stem knows }w how hard and brittle vubber can be. As prepared for the pencil eraser, rubber is soft aud crumbly. Its r slight aund it wears m ;. e re sapidls. This test proves the remarkable resiliency and durability of O’Sgllivan’s Heels, PN OSullivan’s Heels : Absorb the Jl_;é:kk that tire you out Coprrighted, 1919 by O’S. R. Co.