July i, 1908.] 



THE INDIA RUBBER WORLD 



337 



Our Page of Tire Pictures. 



THE Ball Bearing tire comprises a series of molded pockets, 

 in which a series of balls is placed, in addition to an inner 

 tube. The inner tube when inflated under 30 to 40 pounds 

 pressure compresses the molded section and balls and gives 

 the rigidity obtained from go pounds pressure on the ordi- 

 nary pneumatic tire. The idea is that the puncturing of one 

 or more balls does not impair the usefulness of the tire, as 

 would the puncturing of an ordinary inner tube. In this case 

 the inner tube is so far from the tread that it is practically 

 impossible to puncture it. The molded casing and balls can 

 be assembled, if desired, in any tire of standard make. An 

 accompanying illustration shows the position of the balls. 

 This tire is marketed by Ball Bearing Tire Co., Providence, 



Rhode Island. 



* * * 



^ A NEW tire-wire pulling machine comprises a frame with 

 , two standards thereon, an open bearing in one standard and 

 a pivoted bearing in the other standard ; a tapered spindle in 

 the bearing adapted to be swung with the pivoted bearing to 

 swing its free end out of the open bearing, and adjacent tire 

 supporting bracket, and means for connecting the tire wire 

 with the spindle. United States patent No. 881,651 has been 

 granted for this invention to John A. Barbrake, of Canton, Ohio. 



cur safety clamps are provided to retain the armor in place. 

 Both plain and Bailey treads can be obtained for the armor, 

 which can be slipped on the partially deflated tire, and is 

 held securely when the tire is again inflated. Our illustra- 

 tion shows the rim, the rubber lining, and the rubber but- 

 toned tread. The armor can be adapted to either single or 

 double tube tires of any standard make. It is marketed by 

 H. G. Wheeler, Canandaigua, New York. 

 * * * 



The Rutherford pneumatic wheel has given most satisfac- 

 tory results recently under severe tests. One was during a 

 tour of a six-ton truck between Stainford, Connecticut, and 

 New York city. The idea of the inventor has been to permit 

 the use of pneumatic tires on heavy commercial vehicles. 

 This device is constructed on the principle of a wheel within 

 a wheel, with a pneumatic tire between them. Two of the 

 principal London companies operating motor buses are re- 

 ferred to as having ordered trial sets of the Rutherford wheel, 

 and it is stated that some of the sight-seeing vehicles in 

 New York are to be similarly equipped. It may be added that 

 the outer tread of the Rutlierford wheel is fitted with blocks 

 of wood, metal, or rubber composition, according to the uses 

 to which the vehicle is to be put. 



A NEW method of vulcanizing the covers of pneumatic tires 

 consists in supporting the cover upon a core, clamping the 

 ■cover in position on the core with the tread portion exposed, 

 placing a porous covering over the exposed surfaces of the 

 tire cover and in contact therewith, and subjecting the cover 

 so supported and clamp to the process of vulcanization. A 

 patent on this process has been granted to Charles L. Pepper, 

 of Indianapolis, Indiana — No. 882,341. 



* * * 



The Flexible Tire Co. (Springfield, Massachusetts) have 

 developed a wheel for automobiles in which springs are sub- 

 stituted for air for the purpose of rendering the tire resilient. 

 This is the invention of William G. Marr, the president of 

 the company. These wheels are built with a steel band 

 having cylinders projecting radially from the wheel; into 

 thesfe are fitted steel pistons or sliding spokes of great 

 strength. Over the metal band and supporting a sectional 

 outer rim are springs guaranteed to stand any strain to which 

 they may be subjected. The wheel differs little in appearance 

 from the wheel equipped with standard tires. An accompany- 

 ing illustration gives a general idea of the appearance of the 

 wheel. In this picture the rubber is cut away in one place 

 to show the position of the springs. 



* * * 



Empire Automobile Tire Co. (Trenton, New Jersey) are 

 making two styles of inner tubes — endless and butt end. The 

 butt end tube is especialh' convenient for use in the rear wheel 

 of a motorcycle, permitting the changing of tubes without 

 removing the wheel from the frame. This company's tire 

 tubes are furnished in two grades and weights. The Empire 

 grade tubes are of standard thickness and weight. The Em- 

 pire Peerless tubes are made from red rubber and are thicker 



and stronger. 



* * ^ 



The Wheeler steel tire armor for motorcycles, pleasure 

 cars and heavy trucks, consists of an inverted spring steel 

 rim, from 20 to 16 gage, provided with a rubber lining and 

 a tread, the latter being made of a number of plies of rubber. 

 Both lining and tread extend beyond the steel rim and tend 

 to render it sandproof and waterproof. Where blowouts oc- 



Gre.\t pains and study have been devoted to the perfection 

 of detachable devices for pneumatic tires, but this has not 

 been the case so much with solid tires for commercial use, 

 though the demand in this field would seem no less important 

 than in the case of automobile tires. The Swinehart Clincher 

 Tire and Rubber Co. (Akron, Ohio) have just brought out 

 a detachable and demountable tire and rim and a rim re- 

 tainer, patents on which have been applied for. A truck 

 equipped with these devices is not in danger of going out of 

 commission through the loss of a tire, since a new tire 

 already mounted on a rim may be applied in less than 20 

 minutes. The locking device not only secures the rim later- 

 ally, but also wedges it tightly to the retainer, so that there 

 can be no play between the rim and the rim retainer. The 

 endless wire connected wMth the right hand and left hand 

 threaded turnbuckle can be loosened in less than a half 



minute. 



* * * 



The "Half Nelson" tire has been designed specially for 

 emergency purposes. It is made in several sections — usually 

 six — and the couplings by which the sections are joined into 

 one exactly circular tire consist each of a strong hasp and a 

 double curved hook that cannot come apart except by a 

 peculiar double motion. That is, all the couplings in each 

 tire are of the character described except the last, which is 

 similar to that on gas pipes, except that it is six sided, so 

 as to be easily screwed up with a wrench. Not only is this 

 tire easily and quickly mounted on the wheel, but on account 

 of its being made in sections it can conveniently be stored 

 either in one compartment or in several different places about 

 a car. The tire is marketed by the Half Nelson Emergency 

 Tire Co., Minneapolis, Minnesota. 



# * * 



F. B. P.\RKs Co. (Grand Rapids, Michigan), manufacturers 

 of rubber specialties for cycles and automobiles, oflfer a 

 cement for repair work which is referred to as practically 

 vulcanizing patches in place without heat. It is offered also 

 for repairs on hot water bags, for securing taps and heels 

 on rubber boots, and for splicing rubber belts. The company 

 also make rubber tire repair plugs for bicycles. 



