March 1, 1921 



THE INDIA RUBBER WORLD 



433 



The floor space required is live feet and six inches by two feet 

 four inches and the weight is 1,250 pounds unpacked. — The 

 Reynolds Machine Co., Massillon, Ohio. 



METAL STEAM OR AIR BAG 



The short service durat on of the ordinary rubber and fabric 

 air bag, used for inflating and curing cord tires, is the source 

 of great expense in the production of such tires. Frequently such 

 air bags arc serviceable only for six or eight cures, which neccs- 



s i t a t e s practically 

 continuous rcplace- 

 niciits. In the ex- 

 pansible metal steam 

 or air bag shown in 

 ^^^^^^^ ^^^BHlF^^y '''^ illustration the 



^ ^^^©^ inventor has pro- 



. „ vided a very durable 



hxP.NX.silM.E MKT.M.I.IC .^IR B.\G 1 cc • ^ i i- 



and cmcicnt substi- 

 tute in either the sectional or endless type. 



These bags are made of sheet metal and are operated by steam, 

 or steam and air combined, raising the working pressure up to 

 150 pounds per square inch. The sectional type is designed for 

 repair work while the endless ty])e is collapsible and is intended 

 for the elimination of the usual cast-iron building cores. Tires 

 may be built directly on the steam bag, which is removable 

 sectionally from the tire after the cure — The Allsteel Ridewcll 

 Tire & Rubber Co., Oayton. Ohio. 



ENGLISH TUBING MACHINE FOR SOLID TIRES 



l-'orming solid truck tire stock, cspecial'y in the larger sizes, 

 requires very strongly and lieavily built forciiK machines. In 

 American rubber manufacturing practice such machines are fed 

 by hand. In English practice it is customary to employ some 

 form of machine feeding device. 



A 14-inch motor-driven tubing machine for running the largest 

 sections. of truck tires is shown in the illustration. It was spe- 

 cially designed to meet the English and Continental demand for 



World. December 1, 1920, page 179. — Francis Shaw & Co., Lim- 

 ited, Manchester, England. 



Siii.iu TiRK Tuber 



a machine capable of rumiing continuously. The screw of the 

 machine is hollow and fitted with a water-cooling device. 



The stock is fed into the machine by a pair of rollers geared 

 to the spindle and made adjustable so that the feed can be regu- 

 lated to .^uit the size of the tire desired. It has a two-speed gear, 

 lov\' for the smaller sections and high for the larger ones. The 

 gearing throughout is machine-cut and a large ball-thrust washer 

 of special design is provided to take the full thrust of the screw 

 when in operation. 



The illustration shows the machine with a pair of feed rolls. 

 To insure a moi'e even feed and elimination of all back pressure 

 the machine has recently been provided with an improved single 

 roller feed in which the roller is placed in direct contact with the 

 screw. This was illustrated and described in The 1.\I)I,\ Rubher 



necessprv ti 



MACHINE FOR REMOVING BEADS 



In resoling tires, and also when reclaiming tire carcasses, it is 

 the bead, which operation involves consid- 

 erable time and 

 labor when done 

 by hand. The 

 machine shown 

 in the accom- 

 panying i 1 1 u s- 

 tration offers 

 t b e repairman 

 a more practi- 

 cal way to do 

 this class of 

 work. The ma- 

 chine itself is 

 of cast iron 

 w i t h steel 

 knives w h i c h 

 rotate by turn- 

 i n g the hand- 

 crank, each 

 k n i f e turning 

 f o r w a r d and 

 each entering 

 the fabric at the 

 same lime. The 



head of lite machine is lunged so that the tire can be inserted 

 between the two circular knives without first cutting the bead 

 by hand. The kni\cs can be adjusted farther apart for extra 

 heavy tires by means of a lever. Furthermore, the knives are 

 so constructed as to feC|'cl the tire along when cutting. The 

 operator needs cidy to guide the tire and the machine docs the 

 rest of the work. .\s an aid to guiding the tires, two rollers 

 are frequently placed under the casing. The bead cutter is 

 made to beccme a staple piece of equipment and has bolt holes 

 for bolting to the bench. — Progressive Shoe Machinery Co., 

 Minneapolis, Minnerota. 



TIRE CORE CONVEYING SYSTt M 



A very convenient overhead system for handling tire cores is 

 shown in the illu.s.trat'on. The track is suspended from the ceil- 

 ing and is provided with a series of switches which permit the 

 transference of tl.c tire and core to a.iy desired point. 



The i'l.u^.u;.:-.. I .e I'iad Cutter 



¥ 





I 



■^^. 



Overhead Tire Conveyor 



. The track extends the full length of the building, from the 

 calender to the curing room, and is used for handling both fabric 



