65cS 



THE INDIA RUBBER WORLD 



[July 



motor-driven. The stationary type is made in 50 to 3,000 gallons 

 capacity, and may l)e driven by motor or belt. (The Cleveland 

 Mixer and Manufacturing Co., Cleveland, Ohio.) 



TIRE CASING INSPECTING MACHINE. 



The accompanying illustration shows a novel machine designed 

 as an aid to the tire manufacturer, dealer, and repairman in dis- 

 ci. voriiii> clefects in the tire. 



The tire is hung on the 

 sliding head, which adjusts 

 itself, and the pulling fingers 

 are placed over the beads. 

 Pressure applied on the foot 

 lever spreads the beads apart 

 and at the sarne time the bot- 

 tom support pushes up or 

 bulges the tread inward. This 

 opens any breaks or imper- 

 fections in the fabric, which 

 sometimes are not easily de- 

 tected by the old methods. 

 While the casing is on the 

 machine, the hands are free 

 10 turn it and to chalk-mark 

 rim cuts, loose spots on the 

 tread, and other defects. 

 Blind nails are easily found 

 and extracted while the tire 

 is spread; tubes that are 

 stuck to the casing are taken 

 out. without danger of tear- 

 ing ; and new tubes are easily inserted or old ones removed from 

 stiff cord tires. (W. H. Robertson, 223 \orth Church street, 

 Rockford, Illinois.) 



MACHINE FOR CUTTING RUBBER WASHERS. 



Rubber washers are now being cut accurately at a speed that 

 heretofore has not been obtained commercially. The work is 

 done on an automatic machine — here illustrated. It will cut 



Automatic W.vsher Cutting L.\the. 



washers having inside diameter ranging from s/s to S inches, in 

 widths varying from 1/32-inch to %-inch. 



The cutting is done by a circular knife that is rotated by the 

 stock and forced into it by the action of the cam. It is fed by 

 a screw that is operated by a silent, smooth-acting cam. Varia- 

 tions in width are made by changing the feed-screw gears. This 

 machine will take tubing 27 inches in length, having inside diam- 

 eter of tj-inch and over ; for lesser diameters than ^/g-inch it 

 lakes tubing llVa-inch in length. The short length tubing is re- 



.\TER .X 



quired on account of the small size of the mandrel. (Black 

 Rock Manufacturing Co., Bridgeport, Connecticut.) 



RUBBER SOLVENT STORAGE SYSTEM. 



.A now system for distributing inflammable rubber solvents, 



such as petrol, naphtha, etc., has been devised, which is adaptable 



to any quantity from a small tank to a system provided with 



many drawoff points. It is worked by hydraulic power 



w h i c h distributes the 



solvents automatically to 



any level at which the 



factory's water storage 



can be applied. 



The storage tank is 

 placed below the ground 

 or at any convenient 

 point for receiving the 

 solvent from railroad or 

 water carriage. A meter 

 is arranged to measure 

 the quantity run into the 

 tank. Water from the 

 main supply is let into 

 the tank, when the oil or 

 spirits rise to the top and 

 any dirt or foreign mat- 

 ter sinks into the water. 

 This accumulation is 

 drawn off later when the 

 tank is refilled with sol- 

 vent. — 

 The naphtha flows through the connecting pipes To the point 

 where a draw-off is needed in any part of the factofy. A great 

 saving is obtained in evaporation by this system, as the storage 

 tank and the connecting pipes are kept full. Meters can be 

 placed at any point, by which the supply can be gaged, and abso- 

 lutely pure solvent can be drawn off without any risk of fire or 

 loss. (By water & Co.. 121 Kingsway, London. W. C. 2.) 



SPECIAL SCALE FOR RUBBER COMPOUNDING. 



Scales are of such importance in rubber compounding that spe- 

 cial weighing devices have been designed for use in the compound 

 room. The one here pictured is of the predetermined weight 

 type, having no 

 graduations on 

 the chart with 

 the exception 

 of a single 

 reading line in 

 the center. It 

 has two beams, 

 the lower one 

 of ten pounds 

 capacity, grad- 

 uated in oun- 

 ces, and the up- 

 per of two 

 pounds capaci- 

 ty, graduated 

 either in quar- 

 ter ounces or 

 one one-hun- 

 dredth pounds, 

 as the formula 

 requires. E.xtra 

 c o u n terpoise 



weights are furnished so that the total capacity of the scale is 

 102 pounds, and it will handle all ingredients from lamp black 

 to rubber. 



COMPOUNIIINC Sc.SiLE. 



