I". 



THE INDIA RUBBER WORLD 



[June 1, 1915. 



moving in the opposite direction, producing the 



[E. Nail, assignor to the ' lyear lire & Rub- 



... i nit< .1 States patent. No. 1,133,309 



Machini for Winding Bobbins, rhis is a machine for wind- 



n bobbins, to be used in wrapping open cure 



The strips arc moistened, traightened, smoothed and 



nd with uniform tension. I V de Laski, assignor to De Laski 



,\ Thropp < ircular Woven Tire Co., United States patent No. 



1,132,0 



Tire Bi \d Wrapping Machine.— The endless ere of the bead 

 | s ma de up of five wire strands. This is placed in the machine, 

 which stretches and wraps around it spirally two overlapped 

 layers of frictioned tape, grooved rollers at the same time giv- 

 ing the bead its desired shape. [F. W. Kremer, United States 

 , ent, No. 1,132,359.] 

 I 0I.LAPS1BLE Cork.— The four sections of this core are beveled 

 on their inner lateral surfaces, and are held in perfect registry 

 by a single annular ring and eight cap screws. [P. and B. de 

 Mattia, I niti d States patent, No. 1,135,774.] 



Mold for Making Leather Tire Casings.— Leather casings 

 for pneumatic tires are made by forming a strip of undried 

 nc leather in a U-shaped mold. The projecting edges are 

 turned inward, covering the beads, which are cemented and 

 pressed in pi. He on the casing by movable dies. [G. W. Bell, 

 United Mate, patent. No. 1,132,904.] 



Impregnating and Coating Machine— To prevent the forma- 

 tion of air bubbles when proofing fabrics, cords and cables, the 

 air is first exhausted from the material, which is then passed 

 through the rubber solution before exposing it to the atmos- 

 phere. [L. P. Destribats, United States patent. No. 1,135,777.] 



\ similar patent granted to the same inventor was illustrated 

 and described in The India Rubber World January 1, 1914. 



i ollapsible Core — Each of the four sections has a socket at 

 one end and a projecting rib at the other. These engage and 

 align the sections when they are brought together to form the 

 On the inner surface of each section are slots that register 

 with similar slots in the adjoining section. These receive the 

 locking plates, which are held in position 1>\ taper pins when 

 the core is assembled. To remove the core the taper pins are 

 driven out and the locking plates removed; when the sections 

 can be withdrawn from the finished casing. [George II. Naylor, 

 United States patent. No. 1,133,445.] 



Thropp-de Laski Tire Making Machine.— The original ap- 

 plication was filed January 24. 1912. It was divided and this 

 application was filed September 1 ( >, 1 ( )13. The patent for the 

 original application was granted December 1, 1914, and was 

 illustrated and briefly described in The India Rubber World 

 of January. 1915. The patent for the final application has just 

 been granted. [J. E. Thropp, P. D. Thropp and A. de Laski. 

 assignors to The de Laski & Thropp Circular Woven Tire Co., 

 United States patent. No. 1.137,365.] 



Solid Tire Machine.— This is a rolling machine with two 

 i driven rolls. The upper roll is raised and lowered by 

 worm and screw gearing, and can also be accurately adjusted 

 so that it is parallel with the lower roll. In rolling the hard 

 rubber foundation on the rim, the latter is bung on the lower 

 roll and fastened in place by adjustable collars and set screws. 

 The warmed up stock is fed to the machine by band, and the 

 lower roll is rotated, forcing the plastic material into the 

 oves, forming dove-tail ribs wdiich secure the foundation to 

 the rim. The foundation may be made of any required thick- 

 ness within the capacity of the machine by raising or lowering 

 the upper roll. [H. Henning, United States patent. No. 

 1.134,454.] 



Collapsible Core.— This pneumatic tire core is formed of a 

 pluralit) of sections fastened together by fixed and expanding 



rings. [Guy E. Morton and Caspar S Wagner, I'nitcd States 

 patent, No. 1,136,805.] 



Shield for Vulcanizing Molds. — To prevent the formation of 

 ridges on the inner surfaces of cord tire casings during vulcaniza- 

 tion, a stiff flexible shield is placed between the pressure bag 

 and the casing. [J. D. Tew, assignor to The B. F. Goodrich 

 Co., United States patent. No. 1,137.097.] 



fr=> 



AN INNER TUBE REPAIR PLUG. 



The claim of the makers of the Sampson repair plug for inner 

 tubes is that "it is totally unlike anything ever before devised," 

 the intention presumablj being to convey the idea that it is vastly 

 superior to all other such devices. The inventor of this plug is 



responsible also for the invention 

 of the Sampson bicycle plug for 

 roadside repairs on bicycle tires. 

 This bicycle tire plug was made of 

 metal, the new one differing in 

 that it is composed largely of rub- 

 ber. The plug consists of two 

 small metal discs covered with thick layers of rubber, as shown 

 in the illustration. When a puncture occurs, the bole in the 

 tire is stretched sufficiently to permit of the insertion of the 

 under half of the plug, and the two discs are brought together 

 by the wire thumb screw, which is then broken off. The pres- 

 sure of the rubber sections against each other and against the 

 edges' of the tube is sufficient to ensure an effective and per- 

 manent cure. [Stevens & Co.. 375 Broadway. New York | 



THE DAY SECTIONAL CASING. 



This casing is really an outer non-skid tread for pneumatic 

 tires, one that can In easily applied to either new or worn 



tires. It consists of separate sec- 

 tions or pads made from specially 

 prepared rubber and fabric vul- 

 canized under hydraulic pressure. 

 Thirty-three of these sections — 

 each of which is placed across the 

 tread, with the ends pressed down 

 against the side of the casing, as 

 shown in the illustration — are re- 

 quired to cover the outer circum- 

 ference of a standard tire. When 

 all the sections are in place they 

 are securely held together by steel 

 rings, which grip the ends of the 

 sections. Any number of sections can be added, to fit the 

 tire, and new one can be obtained to replace others that have 

 become worn. [Day Sectional Casing Co., Chicago.] 



THE AUT0-PED. 



This is a huge roller skate, driven by a diminutive gasolene 

 motor built in the front wheel. This unique vehicle is provided 

 with pneumatic tires and will carry an adult at a speed of about 

 25 miles per hour. Gasolene is supplied from a tank built around 

 a steering rod, which can be folded down and used as a carrying 

 handle. [The Auto-Ped Co., New York.] 



HUGE TIRES FOR MOTOR TRUCKS. 



Pneumatic tires measuring 38 x 7 inches. 42 x 9 inches, and 

 48 x 12 inches, are now being marketed for use on motor trucks 

 ranging in capacity from \ l / 2 to 5 tons. These tires are made 

 especially for use on trucks carrying passengers or fragile mer- 

 chandise, and it is claimed that their advantage over dual tires 

 lies in the fact that in case of a puncture the driver is bound 

 to notice it at once, whereas with dual tires he might allow one 

 of the tires to support the whole weight for many miles. These 

 are probably the largest tires on the market. [The Goodyear 

 Tire & Rubber Co.. Akron. Ohio] 



