May I, 1909.] 



THE INDIA RUBBER WORLD 



291 



New Rubber Goods in the Market. 



AXEW process in the construction of hot-water Ijottles 

 nnd numerous other articles of soft rubber involves 

 their formation over a mandrel or core made of ma- 

 terial fusible over a low temperature. Two methods of con- 

 structing hollow rubber goods having a fixed mechanical 

 strength have been available hitherto: (i) Building them u|) 

 from sheet rubber and curing in heat, without pressure, the 

 joints consisting of a cemented lap; and (2) leaving an opening 

 or making an incision large enough to permit the removal of 

 the solid and inflexible core or man<lrel. A disadvantage in- 

 herent in the finish method has lieen that the cement might 

 weaken under usage, and in the second method tliat where the 

 opening occurred a weak spot might develop. In the new 

 process the core or mandrel fuses at tlie same temperature at 



-"L-siiiLE Core Hut Water Bottle. 



which the rubber vulcanizes, and may be removed from the 

 rubber article in the form of a liquid after vulcanization. Rub- 

 ber goods may be made to any thickness by this process and 

 reinforced with fabric if desired, and subjected to any necessary 

 pressure of the mold. Heat applied from the outside will cure 

 the rubber all the way through, and at the same time melt the 

 core. The result of applying this process to hot-water bottles, 

 for example, is to produce an article in a single piece, without 

 seams or joints. Tire tubes may be constructed on the same 

 principle, the fusible mandrel being discharged through the air 

 valves. Likewise life preservers, the gas containers of dirigible 

 balloons, and so on. This process has been patented by I'red- 

 erick J. Gleason, vice-president and general manager of the 

 Massachusetts Chemical Co. (VValpole Rubber Works, Walpole. 

 Mass.), who are manufacturers of the water bottle here illus- 

 trated. 



NEW NON-SLIPPINO RUBBER. 



One of the features of the Banigan line of rubber foot- 

 wear which has been introduced this year is a non-slipping 

 characteristic. By mixing steel wool with the rubber com- 

 pound used for the heels and soles not only is the liability 

 to slipping, even on smooth ice, lessened, but the wear re- 



sisting qualities in general are stated to be largely increased. 

 This feature is covered by patents. 



A RUBBER POLICE CLUB. 



One of the newest applications of rubber is in a police- 

 man's baton. The outside is soft rubber, of course, and the 

 baton is therefore flexible. It is loaded with sand and shot, 

 to add to the force of a blow. This is the idea of J. T. Gan- 

 noUj a member of the police force of Denver, Colorado, to 

 whom a patent has been issued. 



JANINS TILE. 



The distinctive feature of the rubber tile pattern illustrated 

 is that only form is required for all the pieces therein, which is 

 not true of every interlocking tile. Each side of every piece 

 is formed of a hook-shaped tongue, and a hook-shaped comple- 

 mentary to the said tongue in shape and size, the hook extend- 



J.\nin's Tile P.^TTERN. 



ing outward and the recess inward, the terminal of the hook of 

 the tongue defining the hook portion of the recess, the tongue 

 and the recess occupying the entire extent of the side. United 

 States patent No. 009,603 has been granted to Albert S. Janin, 

 of New York, for this design. 



TAYLORS WATCH HOLDING CASE. 



The convenient little device illustrated here is intended for 

 use by motormen on street cars and others who require often 

 to consult their watches, and need therefore to have them con- 

 venient of access, without risking the loss of the timepieces. 

 This case is made of gutta-percha and weighs only three ounces. 

 It is fitted with cushions and spring to prevent jarring, and 



W.\reH Holding Case. 

 is adjustable to any size of watch. The spring clamp can be 

 snapped instantly onto any part of a car, whereby the motor- 

 man can have the time under his eyes constantly, instead of 

 being obliged frequently to draw the watch from his pocket. 

 The retail price is $1.50. [Taylor Brothers, No. 921 West Su- 

 perior avenue, Cleveland, Ohio.] 



the ■KINDER" TIRE CASE. 



Tni; llopeuell line of tire cases, which have become widely 

 known and h;ivc been illustrated in these pages, has been 

 supplemented by a new product — the Kinder case— which is 

 shown in the picture herewith. It is of the button type. The 



