June 1, 1914, 



THE INDIA RUBBER WORLD 



499 



New Machines and Appliances. 



COLLAPSIBLE REWINDING SHAFT. 



Tllli avcraifc workman in a rubber mill is accustomed to 

 handling machinery and apparatus which is very strong 

 in construction and not in any sense fragile. This ap- 

 plies to all parts m' rubber machinery. A collapsible rewind- 

 ing shaft, or expansion shaft, as it is sometimes called, must 

 present at least two important features to be at all practical; 

 it must be simple to operate and it must be durable, hi 



Cameron Coll.'vi'sible Kewindinc; Sh.mt, 



order to provide such a device, one company has introduced 

 .a shaft of simple design, but of strong construction, to be 

 used primarily in connection with slittinj.' and rewinding ma- 

 chinery. The shaft has been tested unde. varying conditions 

 ■during the past year, with results which seem to have pi oven 

 satisfactory in every respect. The illustration herewith 

 shows the construction of the shaft. It is worth noting that 

 its only movable part is a core bar which runs through the 

 center throughout the entire length uf the sliaft. The shaft is 

 operated by backing off the nut on the threaded end, which 

 causes it to collapse. Returning the nu; to its working position 

 expands the shaft. The device can be used in connection with all 

 types of centre-wind machines as well as drum or surface-wind 

 machines, or where the shaft is required to be removed from 

 the roll. [Cameron Machine Co., Brooklyn, New York.] 



THE GYRATOK SIFTING MACHINE. 



The type of machine employed in the majority of rubber fac- 

 tories for sifting compounding ingredients em- 

 bodies a rotary brush revolving in contact with 

 a screen. The accompanying illustration shows 

 an entirely different type of sifter, a machine 

 which has been used for years in flour mills 

 and in other industries for sifting materials 

 of a similar nature, and which has recently 

 been introduced in several rubber factories 

 ior sifting compounding ingredients in 

 either large or small quantities. Referring 

 to the illustration, the sieve case is sus- 

 pended from the ceiling by four groups of 

 "wooden hangers A and is actuated by a single 

 eccentric balance flywheel B. The spindle 

 supporting the flywheel runs in a reservoir of 

 oil and the journal ho.Kes are so arranged as 

 to prevent the accumulation of grease and dirt 

 about the machine. The bearings of the ec- 

 centric box in the flywheel are adjustable from 

 the rim of the wheel. When the mechanism 

 is set in motion by some outside source of 

 power transmitted to the belt pulley C, the 

 sieve box D is given a combined reciprocat- 

 ing and gyratory motion, which keeps the ma- 

 terials to be sifted in constant agitation above 



the screens and facilitates the sifting. The swing of the box is 

 counterbalanced by weights properly adjusted in the flywheel 

 and a perfect running balance is secured. The sieves, of which 

 there may be any desired number in each box, are independent 

 of each other and the screens are removable at any time while 

 the machine is standing or in operation. The material is placed 

 in a hopper above the board £ and falls out, after passing 

 thrr>ugh the screens, into receivers placed under the boards /'. 

 The flexible wooden hangers A and 

 the tubular fabric chutes G allow a 

 free, gyratory motion of the ma- 

 chine. (The Wolf Co., Chambers- 

 liurg, Pennsylvania.] 



A NEW HOSE CLAMP. 

 It has hitherto been a matter of 

 considerable difficulty to effect a 

 hose connection at the same time 

 tight and durable. This trouble has 

 increased witli the degree of pres- 

 sure to which the hose has been sub- 

 jected. 



The extent to which compressed 

 air and gases at high pressure are 

 now u.sed has led to a demand for a hose clamp thorough!;, 

 serviceable in the above-named respects, permitting of connec- 

 ti<ms hitherto unattainable be- 

 ing made, and replacing cone- 

 couplings. This object has been 

 effected by the ''Hercules" clamp 

 in two parts, made by H. Schu- 

 Ijart & Co., Cassel, Germany, 

 shown by the accompanying il- 

 lustration. This permits of a 

 uniform radial pressure from 

 four sides at the point of con- 

 nection. 



Ihi "llercules"' clamp has been known to resist a pressure 

 (if MX) atmospheres (4.416 pounds per square inch), while the 

 use III a second clamp made it possible to increase the pressure 

 •SO per cent. 



The Wolf Gvr.\tor. 



