71 



THE INDIA RUBBER WORLD 



[November 1, 1914 



New Machines and Appliances. 



MACHINE FOR SKIVING INNER TUBE STRIPS. 



PORTABLE BUFFER FOR TIRES. 



VT71 1 ]• I\'l : . tin- edges "< rubber >tripv for inner tubes are 

 " skived by hand great skill is required in order to make 

 the bevel uniform and give it the proper angle to form 

 the best joint. A new machine for doing this work, automatically 

 cutting and beveling several strips at one operation, is illustrated 

 herewith. 



The drawings show end and front elevations of the machine, 



Machine for Cutting and Skiving Strips for Inner Tubes 



in which is a table A having a roller B 

 and another roller C at the rear, over 

 an endless belt D for supporting and 

 conveying the strip of rubber under 

 the rotating, circular cutters E. Each of 

 these cutters is mounted on the lower end 

 of a spindle in the carriage F. the upper end 

 of which forms a bearing for a sleeve G on 

 the splined shaft //, 



I he lower end of each carriage has a 

 curved presser foot / set close to the edgi 

 of the cutter. These sleeves and carriages 

 may be moved along the shaft and set to cut 

 strips of any width. The cutter spindles carry 

 bevel gears' J. which arc rotated by bevel 

 gears K on the sleeves G. The shaft // 

 is rotated by gears L, and the endless belt 

 /' is operated bj a gear .1/ on the shaft of 

 the rear roller C. The machine is driven 

 from the belt pulley N and is controlled l\ 

 a clutch ( >. 



The sheet of rubber is fed over the belt /' 

 and is held down on it by the pressure feet 

 I Mi. cutters /-. rotate at high speed and 

 cut the sheet into strips of the proper width 

 and with a bevel of uniform angb While 

 only two cutters are shown, others may be 

 added, according to the width of the belt 1> 

 and the number of strips to be cut. [U. S. 

 .it 1,111,170, Sept. 22. 1914. E. Nail and 



W. C. Tyler, assignors to the <', lyear Tire 



& Rubber Co., Akron. Ohio.] 



at the front 

 which passes 



IN making tires with a fabric breaker strip between the layers 

 of rubber in the tread, the under layer is usually roughened 

 by hand with a coarse rasp to provide a better adhering surface. 

 The accompanying drawings show two views of a portable buffer 

 designed to do this work more quickly and effectively. The 

 machine is mounted on a truck A supported at one end by wheels 

 B and at the other by legs C. On the truck is a motor D whose 

 shaft carries a pinion E driving a gear F. 

 The shaft of this gear is journaled in a 

 pedestal G having a swivel plate H at its 

 upper end. Above this is a similar plate / 

 with a yoke /, forming bearings for a 

 shaft which carries a sprocket K. This is 

 driven through a set of miter gears from the 

 spur gear F. A collar L on the shaft car- 

 ries an arm M having a yoke A" at the top. 

 In this yoke is journaled a concave buffing 

 roller O driven by a chain P passing over 

 sprockets Q and K. The buffer is held 

 against the tire R by a spring S. The yoke 

 N has two handles 7' by which the arm M 

 may be turned on its swivel to move the 

 buffer from side to side over the tire, while 

 the latter, mounted on the spider U, is re- 

 volving. The handles may also be used to 

 increase the pressure of the buffer against 

 the tire. [U. S. Patent 1,112.865, Oct. 6, 

 C. Stevens, assignor to the Firestone Tire & Rubber 



1914. \V 



Co., Akron, Ohio.] 



The Stevens Portable Tire Buffer. 



Werner & Ptleiderer Co., the well known makers of ma- 

 chinery for the rubber trade, are increasing their manufacturing 

 facilities by the addition of an up-to-date foundrj extension at 

 their factory at Saginaw, Michigan. 



The Williams Foundry & Machine Co., of Akron, has recently 

 received instructions from the Ford Motor Co., of Detroit, to 

 duplicate the order previously given for fourteen Williams vul- 

 canizing plants for as many of the Ford distributing agencies. 



