662 



THE INDIA RUBBER WORLD 



ISKPTKMBtR J, 1916. 



from the head is a mold frame consisting of four bolts //, the 

 upper ends of which arc fixed to the head and the lower ends 

 to a ring / that slides freely on the rain piston. A pair of 

 racks / are arranged one between each pair of rods, the upper 

 ends being bolted to the head and the lower to the ring. These 

 have shonlders that engage the mold carrying trays K that are 

 each provided with holes through which the bolts pass. 



When the molds have been placed on the trays the ram is 

 lowered and the head rotated by a segment rack and pinion which 

 locks it in place, and at the same time disengaging the frame 

 from the ram head which is then free. Pressure is admitted to 

 the cylinder and the ram forces the nest of molds upwards 

 against the head, A rubber packing ring mounted in the ring 

 at the top of the shell automatically seals the joint when steam 

 is admitted to the vulcanizer. [J. R. Gammeter, Akron. Ohio, 

 assignor to The B. F. Goodrich Co., New York City. I'nited 

 States patent No. 1,191,296.] 



GUM CHICLE CUTTING MACHINE. 

 When in the raw state j^uni cbicli- is in thi /■irni ui irrej;- 

 ularly shaped blocks which must be cut into small pieces prior 

 to the washing process. L'sually this work is done by hand, 

 h the ordinar.N 

 chet as the only 

 tool, and is therefore 

 a laborious and expen- 

 sive process. On ac- 

 count of the low nielt- 

 iiij^ point ot the gum 

 a machine of special 

 construction has been 

 designed and is here 

 shown in side eleva- 

 tion in the plane of a 

 line through the cen- 

 ter of the machine. 

 A is the housing in which revolves the shaft B carrying the 

 revolving cutter head to which are bolted the knives C and P. 

 The block or blocks of chicle E are fed by gravity to the knives 

 which chop off a piece of gum at each revolution. The size 

 of the chips and the quantity produced depends on the speed 

 at which the knives are rotated and the weight of the blocks. 

 The contour of the central part of the housing and the revolving 

 cutter head produces a blast of air that is effective in cooling 

 the gum and preventing it from melting and clogging the ma- 

 chine. [B. W. Brown, Roscllc Park, New Jersey. United 

 States patent \o. \.\90.372.] 



GOLF BALL. 



The principal idea disclosed in this invention is embodied 



in the construction of a golf ball with a liquid center in which 



a ball having a greater specific gravity than the liquid, is free to 



move about, with the object of aiding flight 



and insuring better control of the ball. 



The golf ball comprises a container A made 

 of double texture fabric and filled with liquid 

 H. Rubber tape C is wound under high ten- 

 sion around the container A, and rubber 

 threads are then wound around the tape wind- 

 ings as indicated at D. Finally, then, the cover 

 £ is applied, which may be of any wear resisting material such 

 as gutta percha. The ball F, as previously stated, is of a specific 

 gravity greater than the liquid, and is made of hard compo- 

 sition or hardened steel with a smooth surface to prevent punc- 

 turing the container. While there is only one inner ball shown, 

 more than one can be used if desired. [W. R. Knight, Bell- 

 ville. New Jersey, assignor to St. Mungo Manufacturing Co. 

 of America, Newark. New Jersey. L'nited States patent No. 

 1.192,831] 



INNER TUBE ROLLING TABLE. 



This radical departure from the old time flat rop rolling table 

 presents several points of novel interest, particularly the pneu- 

 matic feature. Tlie drawing is a cross section of the new table, 

 consisting of legs A and a flat base 

 board B that is longer than the 

 mandrel on which the tube is 

 rolled. C is the valve through 

 which the oblong rubber air bag 

 that covers the entire top of the 

 table, is inflated and 7) is a pro- 

 tecting strip that extends the en- 

 tire length of the table. 



The strip of stock E is laid on 

 the table and the edges of the 

 strip are moistened with rubber solution. The two operators 

 place the mandrel /•" on the lower edge of the stock to which it 

 adheres, and roll it up around the mandrel forming a tub^. The 

 mandrel and tube thereon is then rolled over the crown of the 

 table and down to the rack (/" ready to be cured. IC. ,L. Wit- 

 saman, assignor to Firestone Tire & Rubber Co.. .\kron, Ohio. 

 United States patent No. 1,194,803.] 



SuBEKS CuKD Covering M.\chine. A tubular flattened fabric 

 band is made by inter-winding the individual strands previously 

 impregnated with rubber on a mandrel at the same time that 

 bands of unvulcanized rubber are interposed between the series. 

 The fabric band is finally removed from the mandrel and flat- 

 tened to form a band with selvage edges. [L. A. Suhers. East 

 Cleveland. Ohio. United States patent No. 1,192.017.) 



Cushion Tire. Two rigid annular rings of sheet metal are 

 placed on the inside of the rubber casing, one conforming to the 

 inner circumference adjacent to the rim and the fither to that 

 of the tread. [T. L. Carbone, CbarIottenl)iirg, (Germany. United 

 States patent No. 1,192,036.] 



Tire Building Machine. Four or more collapsible cores are 

 carried by a revoluble frame that presents each core to different 

 reels of frictioned fabric, so that while the inner fabric plies 

 are laid on one core, the outer plies arc laid on another, thus 

 ?. plurality of casings are progressively constructed. [John T. 

 Lister. Cleveland, Ohio. United States patent No. 1.190,432.] 



A later patent relating to the same machine provide^ improve- 

 ments in supporting and driving the cores and ci impressing 

 rollers, also means for shaping the material to each core. [John 

 T. Lister, Cleveland, Ohio. United States patent No. 1,190,433.] 



Myi.i) A.\D Process i-or Semi-Solid Tires. The mold comprises 

 separate annular side, top and bottom sections that are arranged 

 to i)e clamped together. The annular body of rubber forming 

 the tire is laid around the inner base that is built up of frictioned 

 fabric forming an inner tube provided with an ordinary air 

 valve. The tube is inflated, forcing the rubber against the walls 

 of the mold, and the tire is then vulcanized. [M. A. Dees, 

 assignor to American Tire Co. — botli of .St. Louis. Missouri. 

 United States Patent No. 1,192,994.] 



Tire C.vsing Insi'ectixg ^L\clll.\K. The finished casing is 

 passed between rollers so shaped that the tread is bulged inward, 

 whereby the tire material is stretched and any imperfections 

 disclosed. [IT. J. Hoyt, assignor to Morgan & Wright — both of 

 Detroit. Michigan. United States patent No. 1,193.691.] 



THE UNITED KINGDOM. 



CoKD Fabric Spreader. The weftless fabric consisting of 

 parallel cords, is fed between liquid solution rollers and then 

 under a spreading knife whence it passes through a dryer and is 

 then spooled with a liner between the rubberized fabric. [E. 

 Burdin, 71 Rue Nev, Lvons, France. British patent No 2.568 

 (1915).] 



