June 1, 1920.] 



THE INDIA RUBBER WORLD 



587 



ione by various devices, one of which is shown in the accom- 

 panying illuslration. 



In this machine a small electric motor rotates a direct-con- 

 nected hollow spindle, the entrance to which forms a socket 

 wrench for the reception of the valve nut. In front, a suitable 

 guard is placed which serves as a support against which the 

 operator holds the inner tube and valve base during the tighten- 

 ing process. There is a special clutch with a spring attachment 

 designed to eliminate any danger of the tube catching and turn- 

 ing around while the operator is holding it. (.Gillette Rubber 

 Co., Eau Claire, Wis.) 



MACHINERY PATENTS. 



MANDREL FOR TIRE TUBES. 



A DISCONTINUOUS torus-shaped sheet metal mandrel A for 

 •** forming and curing forced inner tubes is shown in the 

 illustration, together with a suitable bench bracket device 



B, supporting the man- 

 drel for the application 

 and removal of the tube 



C, assisted by com- 

 pressed air. 



The entrance of the 

 air for inflation is ef- 

 fected through a nozzle 

 D attached to a hose E 

 and controlled by a suit- 

 able valve F. (Don A. 

 Clark and Clyde E. 

 Lowe, assignors to the 



Curing Mandrel for Inner Tube^ f'P"^."'^ '^°?^ * ^^""- 

 facturmg Co., all of 

 Cleveland, Ohio. United States Patent No. 1,330,785.) 



MACHINE FOR MAKING INNER TUBES. 



Inner tubes are built up from strips of rubber stock delivered 

 directly from the calender roll and wound on mandrels that are 

 continuously fed in a line parallel to the calender. 



A represents 

 a 3-roll calen- 

 der on which 

 is mounted the 

 mechanism B 

 for rotating 

 the mandrels C 

 and simultane- 

 ously moving 

 them parallel to 

 t h e calender 

 rolls. The 



mandrels are constructed so that they can be detachably joined 

 in longitudinal alinement. The strip cutting knives are shown 

 at D. and at E the strips of rubber stock. 



In starting the winding the strip indicated at (a) is wound 

 on the mandrel to form the inner layer or lamination; the strip 

 indicated at (b) is wound on the first layer to lap the convolu- 

 tions of the strip (a), and then the strips (c), (d), (c) and (/) 

 are successively wound on each other to have succeeding strips 

 overlap the convolutions of preceding strips and to form the 

 layers or laminations of material. Thus, after starting the wind- 

 ■iiK on the first mandrel, the winding of subsequent layers to 

 form a tubular covering on a series of detachably connected 

 mandrels can be continuously performed. 



After the strips of material have been wound on the mandrels, 

 the material is cut transversely at the junction of adjacent 

 mandrels, and the separate mandrels with the inatcrial thereon 

 are prepared for vulcanization in the usual manner. (William 



IIINE. 



C. Tyler, Racine, Wisconsin, assignor to The Goodyear Tire & 

 Rubber Co., .Xkron, Ohio. United States patent No. 1,332,774.) 



OTHER MACHINERY PATENTS. 

 THE UNITED STATES. 



NO 1,3J;,5J6. .\pparanis and process for Mealing rubber. E. A. Wul- 

 lenwebcr, assignor to Morgan S: Wright — both of Detroit. 

 Mich. 

 1.3J7,631. Repair vulcanizer. A. B. Zwebel!, Milwaukee, Wis. 



1,337,707. Pncmnatic air-bat core for use in repairing tires. A. L. 



.''■■•n-..,, .,,.1 \ II \l-i.n, . --..I .,rs of 'A each to H. C. 



1,337,910. Kx',::;,.: : ,; ,' ; ,\.' , n" ; K';v^anVr 



1.337,930. MiiM ! ■ l: I . : || I ..„ O 



1,338,233. Ke!i.;n li,. l., • „l. .,,-, h.l ,1,1. -! i lire treads. O. L. McCor- 



e. K. G. Templcton, assignor to The 

 ubber Co.— both of Akron. O. 

 1,338,470. Machine for forming battery jars. J. H. Wagenhorst. Akron, O. 

 1,338,569. Inner tube vulcanizer. E. D. Hostler, assignor of '/, to Hamicl 



& Mather, partners— all of Tipton. la. 

 1.338.844. Device for .stacking tire molds. B. H. Rose, Lakewood, O. 

 1,339,151. Repair vulcanizer. G. S. Andrus, Akron, O, 

 HEISSUES. 

 14,852. .Apparatus for retreading tires. Original No. 1.327,307. R. .\. 

 Brooks, assignor to Western Tire & Rubbe ~ 

 nership — both of Chicago, 111. 



THE DOMINION OF CANADA. 



198,875. Tire tread constructor. J. A. Thomas and E. J. Usher, co- 



inventors— both of Toronto, Ont. 

 199,071. Tire-wrapping machine. The Pierce Wrapping Machine Co., 



.-issignee of F. M. Pierce— both of Chicago, III., U. S. A. 

 -Apparatus ^or manufacturing^solid rubber tires. The Dunlop 



copart- 



199,432. Api 



'I 



199,463. M.ii 



iiiL,. cord-tire casings. J. M. Gilbert, New 

 assignee of F. B. Carlisle, Andover. Mass 



THE UNITED KINGDOM. 



138,623. Mold for vulcanizing boots, etc., having adjustable heel and 

 toe pieces and a base mold capable of being put under pres- 

 sure. D- F. Wilhelmi, Huis ter Aa Doorwerth, Holland. 



chines. O. Sha 

 Apparatus for reti 

 t'. S. A. 



in rubber-working 

 Kenley. Heaton Moor. Stockport, 

 ding tires. S. H. Goldberg, Chicago, 



THE FRENCH REPUBLIC. 



500,417. Improvements in mounting pneumatic tires. A. E. Jennings. 

 500.878. Improvements in transferring system used especially in manu* 



facturing tires. The Dunlop Rubber Co., Limited. 

 501,732. Machine to make pneumatic tire casings. J. L. G. Dykes. 

 501,749. Machine to expand the bands out of which pneumatic tires are 



made. T. L. G. Dykes. 

 501.785. Machine for expanding and vulcanizing casings for rubber 



tires. J. L. G. Dykes. 

 502,045. Apparatus and method for making tires. E. Hopkinson. 



N' 



PROCESS PATENTS. 



THE UNITED STATES. 



136,911. Retreadinp: tires in manner to prevent overvulcaniza- 

 tion of anv part. F. Maier, Los Angeles, Calif., assignor to 

 Western Vulcanizer Manufacturing Co., Chicago, 111., a co- 

 partnership. 

 Producing artificial leather by treating rubber layers. A. A. 

 Somerville. Flushing, assignor to New York Belting & Pack- 

 ing Co., New York City— both in New York. 



THE DOMINION OF CANADA. 



THE UNITED KINGDOM. 



138.535. Retreading tires. S. II. Goldberg. Chicago 



500.421. 

 500,522. 

 500,698. 

 501,035. 

 501,065. 

 501,099. 



Dunlop Rubber Co 

 Imnrovenients in the 



Dunlop Rubber Co 

 Improvements in the 



Dunlop Rubber Co. 



Co., Limited. 

 Improvements in mai 

 Co., Limited. 



THE FRENCH REPUBLIC. 



ufacture of solid rubber 

 mitcd. 



f solid rubber 



f solid rubber 

 [,imited. 

 facture of tires. The Dun 



Limited. 



s. The 

 s. The 

 Rubber 



lufacturc of tires. 



Dunlop Rubber 



don and T. B. Jacock. 

 Improvements in retreadii 

 Manufacture of pneumatic 



S. H. Goldbe 



'&yke 



