406 



THE INDIA RUBBER ^A^ORLD 



[September i, 1905. 



ADAMSON'S SELF CONTAINED VULCANIZER. 



NEW HOSE VULCANIZING MOLD. 



THE business that centers about the repairing of automo- 

 bile and bicycle tires is a very large one; indeed, one 

 that is growing as rapidly in proportion as the automobile bus- 

 iness itself. It is interesting, therefore, to note the types of 

 vulcanizers that are used in these repair shops. The accompa- 

 nying illustration, for example, shows one adapted for branch 

 houses and repair shops where steam pressure is not available. 

 In this case the heat is obtained by two special gas burners ap- 

 plied to the bottom of the press, which is of boiler plate, and in 

 which steam is generated. This heats the top plate, which is 

 made of cast iron, and upon this the part of the tire to be vul- 

 canized is placed. The tire is held in position by means of a 

 wrought iron bar and a counterweight. Several tires may be 

 vulcanized at the same time, and if necessary a repair in a mold 

 section can be vulcanized, taking a little longer time for the 

 cure. The press is fitted with a steam gage. If the weights 

 shown in the illustration are not sufficient, others can be 

 slipped upon the standards so that any reasonable pressure 

 maybe applied. [Manufactured by A. Adamson, Akron, Ohio.] 



ADAMSON'S SELF CONTAINED VULCANIZER. 



■JOTTINGS BY AN AMERICAN IN EUROPE." 



IN reprinting from our pages some notes of travel by a valued 

 correspondent, the Gummi Zeitung (Dresden) remarks: 

 " The India Rubber World publishes a series of articles 

 from the pen of A. M. Stickney, in which the author relates his 

 observations concerning the manufacture of India rubber goods 

 in Europe, which he made during a trip through the old world. 

 Some of these observations are of considerable interest, es- 

 pecially due to the fact that they represent the judgment of a 

 man who has received his practical education across the Atlan- 

 tic, and who looks on things soberly and lucidly, without, how- 

 ever, showing the well known American prejudice which nearly 

 always influences transatlantic judgment. We shall not fail, 

 therefore, to make our readers acquainted with a few abstracts 

 from these fluently written notes of travel." 



THE manufacture of garden hose in 500 foot lengths has 

 been a specialty that only two American concerns, to 

 our knowledge, have followed. One of these companies made 

 it by an adaptation of the existing method of ordinary hose 

 man\ifacture ; the other by utilizing certain patented machinery 

 and processes which were the invention of the late Henry B. 

 Cobb. The latter process, in brief, was the running ol an inner 

 tube through a tubing machine and braiding round it one or 

 more plies of fabric in continuous lengths, alter which a rubber 

 cover was put on by drawing a strip of rubber and the fabric 

 covered tube through a die. The hose was then run through a 

 lead press and a lead casing put on the outside of it. Then the 

 500 foot length was wound on a drum and vulcanized in an open 

 heater. A subsequent process was the stripping the lead cover 

 ofT of the hose and cutting it up in bits ready again (or the 

 melting pot. 



As in many instances the 500 foot length of hose finds an ex- 



no 3. FIG. 2. 



cellent market, it is interesting to note that Mr. Henry Z. Cobb, 

 son of the inventor of the process just described, is the patentee 

 of another for the manufacture of hose m extra lengths. His 

 patent, in brief, calls lor a sec- 

 tional mold, the various sections ^^-^. ■'^tT] 



of which, nesting together and 

 held in place by side clamps and 

 bolts, form spiral grooves enclos- 

 ing two lengths ol hose during 

 vulcanization. In the first illus- 

 tration is shown one of the 

 grooved plates, under and over 

 which the hose is run with an ^^ 

 upward slant. The second illus- 

 trates the method of feeding two 

 lengths into a section. The third 

 makes plain the position of the '^"'- ''■ 



hose after it has been coiled in place and the various mold- 

 ing sections built up around it. Tne (ourth is simply a cross 

 section of the whole vulcanizing mold after the separate plates 

 have been nested together and fastened in place by side clamps. 

 One part of the process is an arrangement for forcing water 

 into the hose to keep it under pressure during vulcanization. 

 The idea set forth in the invention is to have a complete vulca- 

 nizing mold with clamping plates, the whole to go into a vulca- 

 nizer and cure in the ordinary manner. The United States 

 patent is numbered 792,198. 



