June 1, 1921 



THE INDIA RUBBER WORLD 



667 



New Machines and Appliances 



TIRE SECTION CUTTING MACHINE 



AVERY substantially built and simple machine designed for 

 cutting sample sections of rubber goods such as hose, belt- 

 ing or tires and possibly crude rubber, is herewith illustrated. 



It consists of 

 a circular knife 

 of generous di- 

 ameter well 

 housed and 

 mounted on a 

 cast-iron frame. 

 The machine is 

 belt-driven and 

 controlled by an 

 idler. A mov- 

 able table for 

 supporting the 

 stock to be sec- 

 tioned is mount- 

 ed on two side 

 brackets and 

 a lever-operated 



clamp is provided for holding the work. — The Banner Machine 

 Co., Columbiana, Ohio. 



RUBBER SOLE AND HEEL PUNCHING MACHINE 



A quick-acting punch of English design for punching rubber 

 blanks for heels and soles is shown in the accompanying illustra- 

 tion. The punches are mounted to fit into a dove-tailed slot so 

 that they cannot be set incorrectly and do not require adjustment 



Sole and Heel Punch 



of setting. When the die is fixed to the machine, it is flush 

 with the surface of the base. Circular punches range from 1J4- 

 inch to 2j4-inch, the sizes below lJ4-inch are made as twin 

 cutters. For the larger sizes, the speed is 120 revolutions per 

 minute, turning out 120 disks per minute, or 240 disks when 

 using the twin cutters. — C. A. Harnden, Limited, Hyde, Man- 

 chester, England. 



RUBBER SCRAP PULVEJIIZER 



Hard rubber scrap and broken phonograph records may be pul- 

 verized to the fineness of 20-mesh or under in one operation by 

 the machine here illustrated. The machine is simple in construc- 

 tion, durably made, and adapted for hard continuous service. The 

 pulverizing is done by a set of revolving hammers of which there 

 are 500 or more in each machine. The material is held in place 

 by perforated screens or grate bars which do not allow anything 



to pass out until it is fine enough to go through the openings. 

 Either coarse or fine grinding may be done by changing the screen 

 or grates — an operation requiring but a few minutes. A metal 

 pocket prevents foreign material, such as stones, bolts, iron or 

 steel from getting into the machine. Such extraneous matter is 

 thrown out before it enters the hopper by an air-regulated device. 

 The encasement of the machine is heavy cast iron. The pulver- 

 izer shaft revolves at high speed and is furnished with disks of 

 highly tempered steel. The grate bars and plates are made with 

 perforations and openings ranging in size from one inch to 1/64- 



The Gruendler Pulverizer 



inch in diameter. The grates are interchangeable and constructed 

 in individual units of various sizes. Oversize ball bearings assure- 

 quick, easy starting and smooth running. The pulverizers are- 

 made in sizes ranging from 3 to 300-ton capacity daily and require- 

 from 5 to 200 h.p., depending upon their size. It is claimed that in 

 view of the great capacity of the machine, the production per unit 

 requires from thirty to forty per cent less power. .\ two years* 

 guaranty against defects in material or workmanship is given with 

 each outfit. — Gruendler Patent Crusher & Pulverizer Co., St. 

 Louis, Missouri. 



A BRITISH FLEXIBLE COUPLING 



The illustration shows sectional views of a patent fTexible 

 coupling featured by a Scottish firm of rubber machinery 



Flexible Insulating Coupling 



specialists. Flexibility and insulating effect is due to fotir 

 special grade rubber balls set in special cavities arranged at 



