140 



THE INDIA RUBBER WORLD 



[December 1. 1914. 



THE TYLER-NALL TIRE BEAD MACHINE. 



GRAY'S SOLID TIRE MACHINE. 



""TIRE beads are usually made by hand. That is, the cores are 

 * formed by a tubing machine and afterwards covered with 

 frietional fabric by hand. In the accompanying drawing is shown 

 a machine for doing the cementing, covering, etc. It takes tin 

 bead core from a supply reel, feeds it through trimming rolls. 

 through a cement tank, and then through a long drying cylinder. 

 The strip of frictioned fabric is then folded longitudinally 

 around it by a series of guide plates and rollers. 



In the side elevation shown, the upper drawing is the right 

 end, and the lower drawing the left end of the machine. From 

 the supply reel .-/ the core B passes over a guide roller C, 

 through a guide plate D, and between trimming rollers E, where 

 surplus rubber is trimmed away, It then goes through a 

 guide plate /•" and between roughing rolls C which prepare it 

 for receiving a coating of cement. The core i- passed between 

 feed rollers H and through a tank I where it receives a coating 

 of cement. From the tank it passes under a guide roller J and 

 through a long, steam- jacketed drying cylinder K. Here the 

 drying is hastened by forcing compressed air into the cylinder. 

 From the dryer the core passes under a guide roller L and be- 

 tween rollers M, where it is brought in contact with the center of 

 the upper surface of the strip of frictioned fabric A" from the 

 supply reel 0, the muslin wrapper being wound up at P. 



The core and fabric then pass through folding plates 0, rollers 

 R, folding plates .S" and rollers T, which wrap the strip com- 

 pletely around the core and press it down firmly. The completed 

 tire bead then passes between feed rollers U and away from 



U~. Druin* J-Cu.de T.CerrKnt/-t-r*eJ. ^Xou.Mnq ,- T . 



I\ Cinder "> Roller 1 TanK y filers G> ,?„/£,./ [_- £ 



DITLDING up solid tires from sheeted rubber direct from one 

 '-' calender is not new. Building from two calenders, however, 

 as illustrated herewith, of different qualities of rubber, is new 

 and interesting, and is described below. 



[_rf.««* 



is Secc nd 

 fV Calendar 



///, //, / ^f- Slidiry Block in Floor 

 Gray's Solid Tire Machine. 



S"«»(y 



the machine. The various feed rollers, trimmers and folding 

 rollers are driven through a sprocket chain V running the entire 

 length of the machine, and belts II', from an electric motor X 



I /- Feed 

 <-/ Rollers 



A/f_ Rolls for joining 

 ' Core and Fabric 



r_ SprocKef 

 Cha t n 



IS Drying 

 l\~ Cylinder 



Wmdup w Reel 



\_e\t end. cA W\acr\\r\t 



suspended by hangers under the frame. All driven parts are 

 geared to feed the core at the same speed. 



This machine is the invention of W. C. Tyler and E. Nail, who 

 have assigned it to The Goodyear Tire & Rubber Co., Akron, 

 Ohio. 



The apparatus begins with a revolving drum holding the rim 

 on which the tire is built. This is mounted on a swinging arm 

 set between two calenders. The rim is pressed first against 

 the lower roll of one calender and then against 

 '9 that of the second, and is built up in plies of two 



- %%f e different compounds, sheeted and trimmed into a 



/—. C u ,de strip of the required width. 



/-> fl«td ^ n ' ne drawing, A is the first calender, in which 



the sheet B is produced for forming the base of 

 the tire ; the feed being at /. The rim C is 

 mounted on the drum D, carried on the swinging 

 arm E. The lower end of the arm is pivoted in 

 a block F which slides in a groove in the floor. 

 To hold the rim against the lower calender roll 

 with sufficient pressure, a cord G carrying 

 weights // is attached to the arm E. Back of the 

 lower calender roll are two circular cutters / for 

 trimming the sheet B into a strip of the required width. The 

 machine is operated as follows : 



The rim is swung over against the lower roll of the first 

 calendar A and is revolved by frietional contact 

 with it, being held in this position by the weighted 

 cord until the base of the tire is built up to the 

 required thickness. 



Where another quality of rubber is to be used 

 in the tread, the arm E is swung over, bringing 

 the rim with the partly-built tire against the lower 

 roll of a second calender A". This is constructed 

 •1\ like the first machine, and the tread is 

 built up in the same manner. In case more than 

 two qualities of rubber are to be used, the drum 

 is brought in front of other calenders by sliding 

 the block F along the groove in the floor. The 

 process is repeated until the whole tire is built up. 

 This is the invention of C. H. Gray, of the India 

 Rubber, Gutta Percha & Telegraph Works, Sil- 

 vertown, England. 



William R. Perrin Co., with offices in Chicago, and factories 

 at Argyle, Illinois, is putting a new type of vacuum dryer on 

 the market. This company since the death of the late Mr. Per- 

 rin has been managed by Mr. Charles Johnson, its secretary. 



