May 1, 1919.] 



THE INDIA RUBBER WORLD 



New Goods and Specialties. 



RUBBER-FINISHED VACUUM BOTTLE. 



THE handicaps of the ordinarj' type of vacuum bottle are 

 said to be overcome in the type shown here. Instead of 

 fragile glass, the bottle is made with non-breakable welded 

 steel vacuum walls. The usual glass filler or container is done 

 away with and its place is taken by a highly 

 ijm glazed flexible enamel fused to the steel 



.f^^ shell. There are, therefore, no removable 



jtaHA parts but the cork and the cup which forms 



^ ^^^^B , the cover. There are also no unsealed open- 

 ^^^^B ings at the neck, into which liquids may leak. 



^^^U The type of bottle shown in the accompany- 



B^^B ing illustration is surfaced with dull-black 



^^^^1 rubber composition applied to the steel and 



^^^H baked. Another style is finished in nickel 



^^^^B and a third has a tan leather covering. The 



^^^^^ cup on all is heavily nickel-plated, and only 



i!E 'ERKosTAT. first-cIass materials are used throughout. 

 The bottle is made in one and two-quart sizes, the latter being 

 successfully possible because of its non-breakability. Liquids 

 may be kept hot for 20 hours and cold for over 40, it is claimed, 

 by the use of the "Ferrostat" non-breakable bottle, as it is called. 

 The one-quart size weighs approximately 2% pounds and the 

 two-quart, 4%. (Stanley Insulating Co., 43 Exchange Place, 

 New York City, and Great Barrington, Massachusetts.) 



TOY SUBMARINE. 

 A new toy submarine 

 is one of the recent de- 

 velopments of the toy- 

 makers. It is construc- 

 ted of metal and has a 

 motor made of a rubber 

 band which is easily re- 

 placed. By a simple ad- 

 justment, the submarine can be made to run on top of the 

 water or submerged, straight ahead or in circles. It will dive 

 and rise to the surface, and shoot a projectile from the gun on 

 its deck. (American Toylaiid Creators, Inc., Brooklyn, New 



York.) 



A STEEL-CORED GOLF BALL. 



A new golf ball has been devised which, it is claimed, goes 

 straight when started straight, due to its perfect roundness and 

 _ a steel core in its exact cen- 



ter which thereby provides a 

 fixed center of gravity, -"^ir 

 chambers or indentations on 

 the surface, arranged accord- 

 ing to a scientic plan, offer 

 a minimum of resistance to 

 the wind. The outer cover- 

 ing is of rubber and is tough 

 and durable as well as resili- 

 ent. The ball is one of the 

 products of the mechanical 

 goods division of the United 

 States Rubber Co. (Thomas 

 E. Wilson & Co., Chicago.) 



Itl 



IM Si 





••SAFEPACK KREPEKRAFT" FOR WRAPPING TIRES. 



.^n elastic tire-wrapping paper, put up in narrow strips suita- 

 ble for winding around tires so as to conform to their shape 

 and make an absolutely smooth wrapping, is waterproof and made 

 in colors to add to the attractiveness of the package. (Safepack 

 Mills, 727 Atlantic Avenue, Boston, Massachusetts.) 



A ONE-RUBBER DENTURE. 

 The latest development of rubber for dental use has resulted 

 in what is known as pink denture rubber. Because of the dif- 

 ficulty formerly experienced in obtaining a natural-looking pink 

 rubber that was also sufficiently resilient and strong enough 

 to hold the pins of artificial teeth, it was usual to employ a 

 base-plate rubber of red, maroon, brown, or some other color, 

 and veneer it with another rubber nearer the color of the gum 

 tissue but not having the qualities required in the base plate. 

 The new "pink denture rubber" shown in the accompanying illus- 

 tration possesses tensile strength, density, and resilience, as 

 well as the natural pink 

 color of the gums through- 

 out. It is easily packed 

 by hand in the unvulcan- 

 ized state, and vulcanizes 

 and polishes by the ordi- 

 nary methods. Varying 

 tones of pink can be ob- 

 tained by exposing the 

 finished plate to sunlight, 

 the process being called 

 solarization. Of this rub- 

 ber, the entire plate can ^'^'^ Denture Rubber. 

 be made in one piece. The illustration shows a denture made 

 m this way, from which half of the porcelain teeth have been 

 removed by dissolving the rubber, the object being to show 

 the retention of the tooth pins and how the teeth are sur- 

 rounded at the points of attachment by the one homogeneous 

 plate of rubber. The material used in the manufacture of this 

 denture is first latex crepe. (The S. S. White Dental Manufac- 

 turing Co., 211 South Twelfth street, Philadelphia, Pa.) 



ANOTHER RESILIENT WHEEL. 

 Here is shown a wheel which has si.x rubber cushions arranged 

 in steel frames around the hub Through these cushions all 

 shock is transmitted and the load "floated The frames are 

 covered with a steel plate that i^ meted to the felloe band, and 

 this band is made lo S. A I ilimensiuns to permu the use of 



^[^ 



any standard make of solid rubber tires o 

 wheels are said to give greater speed a 

 fuel, fewer repairs, and decreased tendency 

 Products Co., Detroit, Michigan.) 



1 the outside. These 

 id mileage with less 

 o skid. ( laxon Steel 



