August 1, 1910.] 



THE INDIA RUBBER WORLD 



601 



core section A, which is removed by slightly stretching the neck 

 of the bottle. The other sections are removed in a similar man- 

 ner, after which the bottle is trimmed and finished. [E. Stahl 

 and W. Klein, assignors to Goodyear's India Rubber Glove 

 Manufacturing Co. — both of Naugatuck, Connecticut. United 

 States patent \o. 1, 



SVBER'S FABRIC STRIP MACHINE. 



Cotton yarn is interwound and laminated upon a mandrel by 

 this machine, forming a tube that is afterward impregnated 

 with rubber, collapsed in band form, and then dried and wound 

 up on a reel. These strips are used for building tire fabric, 

 making rubber hose, belting and other rubber products. 



The drawing is a side elevation of the machine. The four 

 reels, A, B, C and D, rotate one within the other, the alternate 

 reels revolving in opposite directions, and are supported by the 

 standard E. Upon each reel is mounted a number of spools 

 F, containing the yarn elements which are interwound around 

 a centrally located hollow mandrel by the rotation of the reels. 



P^.^ 



The band passes over the mandrel through the solution cham- 

 ber, and is shown at G, being fed to the drying roller H, and 

 drums /, /, A' and L. After passing over the drying rolls the 

 band is carried through the chamber M, in which the solvents 

 are recovered and then led through stretching rollers .V, O, and 

 finally wound up on the reel P. [L. A. Subers, Cleveland, Ohio. 

 United States patent Xo. 1,188,571.] 



In a more recent patent Subers provides a machine that im- 

 pregnates the strands of yarn separately, prior to forming them 

 on a mandrel, into a hollow band, and at a relatively larger 

 angle than heretofore employed. [L. A. Subers, Cleveland. 

 Ohio. United States patent No. 1,189,751.] 



DAVIDSON LATEX COAGULATING CH0HN. 



According to this invention, the latex is churned to and fro in 

 an oscillating cradle, the coagulant being added to the late.-c at 

 the same time. 

 The illustration shows a side elevation of the n-.achine. wliicli 

 is constructed of angle 

 iron and strongly braced 

 to support the working 

 parts. The cradle A has 

 upwardly curving ends, 

 giving it a somewhat kid- 

 ney shape in longitudinal 

 section. The central part 

 is open to receive the 

 latex and coagulant, and 

 a screen B is provided 

 on the side from which 

 the mother liquid is 

 poured. The cradle is 

 attached to four links, 

 two of which, C C, are 

 shown, pivoted to the frame at D D. The oscillating motion is 

 obtained by the pitman rod E, connected to the belt-driven 

 crank disk F. 



The coagulant tank G is connected to the auxiliary tank H 

 that holds a quantity of coagulant, bearing a definite relation 

 to the quantity of latex to be coagulated in the cradle. The 



two valves / and J are connected so that when one is open the 

 other is closed; thus when the bottom valve is closed and the 

 upper one opened, the auxiliary tank is filled. When the top 

 valve is closed the lower one opens, and the coagulant drips 

 into the cradle and mixes with the latex. 



In operation the latex is poured into the cradle to about one- 

 third its capacity, the machine set in motion and the coagulant 

 allowed to gently flow into the rocking cradle. When coagula- 

 tion is complete the machine is stopped and the mother liquid 

 poured out through a screen by tipping the cradle to one side, 

 and the rubber is emptied from the other side into a deflecting 

 chute that leads into a suitable receptacle. [S. C. Davidson, 

 Belfast, Ireland. United States patent No. 1,189,351.] 



B.ATHiNG C.\p Pl.mting M.\chine. — .-^ circular disk of sheet 

 rubber is plaited and the plaits permanently cemented on this 

 machine, which also operates on half and quarter disks and those 

 with the center cut away. [F. F. Brucker, assignor to Miller 

 Rubber Co. — both of Akron, Ohio. United States patent No. 

 1.186,374.] 



H.\le"s .^l•RO^- Feed for Mills. — The apron is maintained in 

 a taut condition when moved out of contact with its driving roll 

 and in the inoperative position it is supported so that it will 

 not fall into the pan or obstruct the front roll. [B. O. Hale, 

 assignor to Farrel Foundry & Machine Co. — both of Ansonia, 

 Connecticut. United States patent No. 1,189,444.] 



NEW TIRE MACHINES, 



A RAMLESS PRESS VULCANIZER. 



THE Steam chamber A of a hydraulic 

 press vulcanizer serves also as the ram 

 cylinder, and the upper cover B is raised by 

 rams C, C. Water is admitted to the lower 

 side of the piston D through a pipe E, and 

 in its lowest position the piston is supported 

 by a flange F. To reduce condensation, the 

 upper part of the piston is covered with 

 metal and asbestos sheets G. [J. H. Nut- 

 tall and D. Bridge and Co., Castleton, Man- 

 chester, England. British patent No. 978 

 (1915). This patent was briefly described 

 in The \sm.\ Rlbber World, July 1, 1915.] 



KTIENTZELS BEAD FORMING MACHINE. 



F.ndless straight side and clincher tire beads are made of 

 threads or cords impregnated with rubber by a continuous wind- 

 ing process, on the machine here described and illustrated. In 

 the drawing, A is the vacuum 

 chamber, B the condenser that 

 produces the vacuum and C the 

 rubber solution tank. The 

 thread or cord is arranged on a 

 reel D, journaled on bearings 

 within the vacuum tank. When 

 the valve E is opened, the par- 

 tial vacuum causes the solution 

 to flow from the tank into the 

 vacuum chamber, submerging 

 all or part of the reel of thread. 



The impregnated cord then passes out of the chamljer. through 

 a drying apparatus F, to the bead-forming machine G. This 

 consists of a short belt-driven shaft journaled in a suitable 

 frame with an annular bead mold H keyed to the outer end. 

 A lining of frictioned fabric is placed in the groove of the bead 

 mold, the end of the impregnated cord is adhered to the lining, 

 and the mold revolved until suflicient cord has been coiled to 



