October 1, 1916.] 



THE INDIA RUBBER WORLD 



15 



total number of threads in the finished fabric. The threads 

 of each warp are inserted between threads of the other warps, 



and are all finally 

 united by the rubber- 

 izing process hereafter 

 described. Referring to 

 the drawing, which is 

 a side elevation of the 

 machine, the two half 

 warps ./ and B, after 

 passing through ver- 

 tical combs, which 

 align the threads to 

 the required width, are 

 guided over drying 

 drums C and D, then 

 downward tlirtiugli the vertical comb E. whicli unites the two 

 half warps in a single layer. 



After passing around the i oiler /• and between rollers G and 

 H, where it is niipregnated with rubber solution, the fabric is 

 guided over the heated drum /, and the spreading device / ap- 

 plies a coating of rubber to the front surface. It then passes 

 around the drum, over the water cooled roller K, and between 

 rollers L and M 'o the spreader .V, which rubberizes the back 

 surface of the fabric. 



The fabric, which is now coated on both sides, passes under 

 the steam-heated hood O, and around the guide roller P to the 

 wind up roller Q, the liner being supplied from roller R. The 

 solvent vapors arc drawn through pipe 5' by a suction pump to 

 the chamber T, mto which are also drawn vapors from the 

 drum /. [Eugene Bourdin, Lyons, France. United States 

 patent No. 1,195,554.] 



MECHANICALLY OPERATED STRAINER HEAD. 



To avoid difficulty and loss of time attendant in changing the 

 strainers of rubber reclaiming machines when they become 

 clogged, is the object of this invention. The accompanying 



drawing is a side eleva- 

 tion of a tubing machine 

 showing one of the three 

 mechanically operated 

 strainers and the operat- 

 ing motor attached over- 

 head. 



The strainer head A 

 discharges in three direc- 

 tions longitudinally and 

 laterally, and is bolted to 

 the tubing machine head, 

 forming a continuation of 

 the stock discharge pas- 

 sage. It is chambered for 

 steam and provided with 

 guideways in which the 

 three strainers slide ver- 

 tically. One of the side 

 strainer heads is shown 

 at B, and C is a side ele- 



vation of the front head. These are raised and lowered by 

 screws, one being shown at D, that are turned by three splined 

 gears located in the casing F and driven by a pinion and vertical 

 shaft connected to the motor G. The individual movement of 

 the screws is controlled by three levers, one of which is shown 

 at H, each lever being provided with a pivoted link /, that auto- 

 matically stops the movement of the strainers beyond a pre- 

 scribed point. 



The strainers are rectangular perforated plates in two sections 

 that are removably held in the strainer frame, their perforations 



registering with those of the frame plate and a wire mesh of 

 finer gage, in two sections, interposed between. Thus the fine 

 wire strainer is protected from injury by the larger particles of 

 metal and other solids in the rubber and holds back the finer 

 particles and shreds of fabric. When the strainers become 

 clogged they are raised or lowered, as the case may be, until one 

 of the sections clears the head and the other is opposite the out- 

 let, then the clogged section and wire sheet are removed for 

 cleaning without interrupting the operation of the machine. 

 [Frederic B. Garrahan, Paterson, New Jersey. United States 

 Patent No. 1,195,576.] 



INNER TUBE ROLLING MACHINE 



Generally speaking, inner tubes are made by hand, and there- 

 fore the following illustrated description of a new mechanical 

 device for doing this work is of interest. 



Referring to the drawing, which is a side elevation of the 



machine, the opera- 

 tion is briefly as fol- 

 lows : The pole A 

 is placed on the end- 

 less belt carrier B. 

 and the four narrow 

 rollers, two of which 

 are shown at C", C, 

 are brought down in 

 contact with the ends 

 of the pole and sup- 

 ported by the idler 

 roller D, located un- 

 der the belt. The 

 sheet of rubber stock 

 is now laid on the 

 platen E, which rests 

 upon and moves with 

 the belt carrier. The upper edge of the sheet is then solutioned, 

 the carrier belt placed in motion, and the platen and the super- 

 posed sheet of stock are carried into the machine to a point 

 where the edge of the sheet becomes attached to the revolving 

 pole upon which it is rolled up, the platen being checked in a 

 position which imparts a slight tension to the sheet and delivers 

 it smoothly and evenly to the pole. [Frank Fenton, assignor to 

 the Miller Rubber Co.— both of Akron, Ohio. United States 

 patent No. 1,197,192.] 



TIRE BUILDING MACHINE WITH FABRIC STRETCHING DISKS. 



The object of this invention in tire building machines is to 

 apply a positive and predetermined stretch only to such points 

 in the fabric strip where stretch is necessary to make the fabric 



conform to the shape 

 of the core. Thus, 

 longitudinal stretch in 

 the margins of the 

 fabric strip is elimi- 

 nated, puckering ob- 

 viated and the stitch- 

 ing operation reduced 

 to a superficial rub- 

 bing. 



The drawing is a 

 side elevation of the 

 machine showing a 

 tire core A mounted 

 and driven in the 

 usual way. On the table will be seen the stock roll B, from 

 which the frictioned fabric strips C are passed around an idler 

 roller and then down and around the stretching drum D to the 

 core, the liner being wound up on the roller E. 



