THE INDIA RUBBER WORLD 



657 



New Machines and Appliances. 



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HYDRAULIC LEAD-ENCASING PRESS. 



iBER-HosE MAKING requires various macliiues of special de- 

 siijn but not one is more interesting than the machine that 

 covers the uncured hose in continuous lengths with lead, 

 n reality is a mold which applies a plain, corrugated or 

 , surface to the vulcanized hose. 



The lead-encasing press here 



shown consists of a powerful hy- 



jlic press of special design, 



Iriven by a hydraulic pump and 



■ontrollcd by special hydraulic 



Lead Press 



operaiing valves. These presses are usually made in two sizes, 

 650 tons and 1,000 tons capacity. The lead-encasing equipment 

 comprises a lead-holding cylinder of alloy steel fitted with a 

 wrought steel steam jacket and an oil-hardened and heat-treated 

 alloy steel ram for forcing the lead downward through the cylin- 

 der. Located immediately below the lead cylinder is a block con- 

 taining the lead-encasing dies and chambers through which the 

 hose passes in a horizontal plane. There are several sizes of die 

 blocks and dies for covering the ranges of hose from ^-inch to 

 3-inch outside diameter. There are other special devices in con- 

 nection with the die block and dies for perfecting the lead-en- 

 casing operation. The press is set on a foundation so the floor 

 is level with the top of the hydraulic cylinder and the reels for 

 the uncovered and covered hose arc placed on the floor at oppo- 

 site sides of the press. 



The operation is briefly as follows : the uncured hose is 

 brought on a reel to the press, the cylinder of the press being 

 charged with lead, the hydraulic pressure is applied and the lead 

 covering is extruded through the die block in a horizontal direc- 

 tion, .^s the lead tubing moves outwardly, the end of the rubber 

 hose is inserted into the opposite side of the die block and is lead- 

 encased as the lead tubing is extruded. It is then wound on a 

 special steel reel on the exit side of press. After the first charge 

 of lead IS exhausted, the cylinder is refilled and the process re- 

 peated whereby any length of hose can be encased without joints 

 or seams. The reel of lead-encased hose is then placed in a 

 vulcanizing oven and internal pressure applied to the hose during 

 the vulcanizing process, after which the lead-encased hose passes 

 through a stripping machine which removes the lead covering 

 and the hose is ready for packing and shipping. (John Robertson 

 & Co. 121-137 Water street, Brooklyn, New York.) 



SOLID TIRE PRESS CRANES. 



The labor-saving devices here pictured will interest tire fac- 



tories, service stations, and garages, as one man can easily 

 handle heavy truck wheels with the.se cranes. As the larger 

 sizes of wheels consume most of the space between the two 

 platens of the press, the cranes should operate in a very small 

 space. Therefore they have been made exceptionally compact 

 without impairing their strength. The hoisting mechanism is 

 especially efficient, with automatic brake, and is built into the 

 crane framework. All gears are machine cut from solid blanks. 



The mast jib crane is arranged for attaching to the left-hand 

 vertical column of the press. The boom occupies only 4 inches 

 of space and swings over a large arc. When not in use it can 

 be swung out of the way. 



The monorail crane operates on an I-beam track attached to 

 the top of the press in the center. It has four single-flange 

 track wheels with hardened steel roller bearings, insuring free 

 movement and long life. The boom requires only 4 inches of 



Mast Jib Type. Mo.^orail Type. 



One-Ton Tire Press Cranes. 



head room. When not needed at the press, it can be moved out 

 of the operator's way, or used independently as part of the track 

 system. (The Chisholm-. Moore Manufacturing Co., Cleveland, 

 Ohio.) 



A NEW SOLUTION MIXER. 



A new and novel mixer for liquids, semi-liquids and soluble 



materials which is meeting wi 

 cement and other compounds 



:h success in handling rubber 

 is shown in the accompanying 

 illustration. 



The agitating or mixing is 

 accomplished by upper and 

 lower flights mounted and 

 opposing each other on verti- 

 cal shafts, which revolve and 

 also rotate about the con- 

 tainer. The lower flights 

 raise the heavy material from 

 the bottom and the upper 

 flights lower the light ma- 

 lerial from the top and the 

 rotating movement about the 

 container imparts a complete 

 three-way movement, where- 

 by every particle of material 

 is displaced. 



The portable type is made 



in three sizes, 10, 20 and 50 



gallcjns capacity. The 10 and 20-gallon mixers are hand-portable 



and hand-operated. The 50-galIon mixers are wheel-portable and 



The Triplex Mi 



