Jl'lv 1. 1913.J 



THE INDIA RUBBER WORLD 



547 



THE GERMAN EMPIRE. 



PATENTS ISSUED (with Dates of Validity). 

 259,253 (September 19, 1912). Process of separation of rubber or balata 

 from latex. Dr. Heinrich Colossciis, Regcnsburgcr Strassc 27, 

 Berlin. 



(April 12, 1912). Pneumatic tives with laced tread for motor 

 trucks and similar vehicles. Eugen Fritz, Saarbriickcn. 



(Hecember 15, 1911). Improvements in rubber heels. Atleta 

 Rubber Works, Elberfeld-Vohwinkel. 



(June 28, 1911). Process for separation of rubber from latex. 



Wilhelm Pahl, Dortmund. 

 (May 26, 1912). Rubber substitute. Farbenfabriken vorm. Fricdr. 



Bayer & Co., Leverkusen. 

 (September 3, 1911). Impro%*emenl^ in vulcanizing presses. A. 



(Jlier & Co., Clermont-Ferrand, France. 

 (May 21, 1912). Seamless football covers of vulcanized rubber 



with fabric lining. Moritz Richard Fccht, Leipziger Strasse 8, 



Dresden. 

 (January 31. 1911). Process for production of cellular rubber 



objects. H, Dogny and V. Henri, Paris. 

 (.September 21, 1912). Process for vulcanization of rubber, of un- 

 saturated fatty oils and their derivatives. Dr. Hans Klopstock, 



Berlin-Wilmersdorf. 

 (January 20, 1912). Production of elastic substances, having the 



properties of rubber. Willi Ernst Recser, Amsterdam. 

 (January 16, 1912). Process for making covers for pneumatic tires. 



Ernest Clark, London. 



PNEUMATIC TREADS FOR HUMAN FEET. 



259,324 

 259,421 

 259,721 

 259.722 

 260,196 

 260,714 



260,956 

 260,916 



261,241 

 261,438 



SAinTARY DRINKING CUPS. 



Ever since everybody became so much exercised — rightly or 

 wrongly — over the germ theory, there has been a perpetual effort 

 to design the most convenient sort of sanitary drinking cup. 

 The accrmpanying illustration shows one used in Wasliington. 



Harris & Bwing. Washington, D. C. 



S.\NJT.\RY Drinking Cup ."Attached to Rubber Tl;^e. 



It will be noted that rubber tubes are connected with the fountain, 

 about long enough for convenient use by a man of ordinary 

 height. At the end of the tube there is a cup ; but it is not 

 necessary for the lips to come in contact with the cup, as the 

 force of water carries it about an inch above the cup, so that 

 you can drink water out of the air. Only the most perverse 

 person can imbibe any germs when using this style of cup. 



A .XEWSPAPER writer with a well-developed imagination 

 **■ that ought to make him successful in his high calling, 

 recently contributed to "The Lynn Item" a disquisition on "The 

 Possibilities of Rubber Soles," in which he sets forth the theory 

 that because hides have gone up to 20 cents a pound and rubber 

 gone down to $1 a pound, we may soon discard leather soles for 

 our shoes and take entirely to rubber soles, with pneumatic 

 inner cushions. As rubber has still further dropped in price 

 since this was written, and is likely as time goes on to seek lower 

 and lower levels (within certain limitations), and as hides in the 

 meantime are likely to become still more expensive, the writer's 

 dream of universal rubber soling for civilized footwear may quite 

 possibly come true. Here is what he has to say : 



"With hides up to 20 cents a pound, and prospects of going 

 higher, and rubber down below $1 a pound and prospects of going 

 lower, and a fashion of rubber soled shoes setting in, the time is 

 at hand for speculation as to whether or not rubber bottomed 

 shoes will take the place of leather bottomed shoes in the same 

 fashion that rubber tired vehicles have taken the place of iron 

 tired vehicles. 



"It is not utterly impossible to conceive a pneumatic soled shoe. 

 People wearing such shoes would certainly tread on air, and find 

 life's walk easy, as far as physical exertion is concerned. To 

 make a pneumatic sole, with an inner tube to hold air, would be 

 a simple task in the mechanics of the rubber industry. 



"To fill the inner tube with air would not be a difficult task in 

 these days of common air compressors and pumps. The vacuum 

 cleaner of the home might have a reverse gear, which would 

 cause the bellows to pump air into the sole of the shoe, instead 

 of to pump air out of the room and take with it dust and dirt. 

 And if a person did not have any sort of an air compressor at 

 home, he might go to the nearest garage, and use the common 

 air pumps, or, in a final emergency, he might blow up his soles 

 with a little hand pump, the same as is used by bicychsts. 



"If people should wear pneumatic soled shoes they would 

 naturally carry with them a repair kit, consisting chiefly of a few 

 patches and plugs to use on those parts of the soles which might 

 be punctured by tacks or bits of glass in the streets, or by rough 

 pavings. Everybody who wore pneumatic soled shoes would be 

 glad to join with autoists in voting 30 da}'s in jail to the careless 

 person who threw nails or glass into the street, and also, in vot- 

 ing to exile the street commissioner who failed to keep the side- 

 walks and the streets clean and smooth for the passage of the 

 air tread shoes. 



"Another possibility is that some cautious persons who might 

 dread a punctured sole and a consequent limp home, might have 

 the inner tubes of their soles filled with one of those substitutes 

 for air that is as thick as molasses, and that is sometimes pumped 

 into auto tires to make them wear forever. And on winter days, 

 when sidewalks were slippery, a person afraid of a fall would 

 naturally put some chains on his shoes and save himself from 

 skidding on the ice. 



"But the rubber soled shoes are a reality, not a possibility. 

 Thousands of pairs of rubber soled shoes will be worn this sum- 

 mer by young men and young women, and some rubber soled 

 boots will be made in the fall. The manufacturers of rubber 

 goods are making a great deal of progress in the production of 

 rubber footwear. They are able to buy rubber at about $1 a 

 pound, and to make rubber soles that weigh three-quarters of a 

 pound a pair, and sell them for SO cents a pair. As time goes on 

 they are apt to get their crude rubber cheaper, and to make their 

 soles lighter, and to sell them for less. It isn't beyond the proba- 

 bilities of the shoe industry that people will find rubber soles so 

 serviceable and economical for shoes for street wear that they 

 will commonly wear them. \ new and unlimited outlet for rub- 

 ber is thus opened." 



