364 



THE INDIA RUBBER WORLD 



[March 1, 1920. 



formed in the base, is then applied and brought home to the 

 desired point of contact and the washer upset or bent into the 



Stevenson Safety Bolt and Nut. 

 recess by means of a cape chisel and a hammer blow. For 

 releasing, the upsetting operation is reversed, the same washer 

 being used repeatedly. (The Safety Nut & Bolt Co., 1836 

 E»cHd avenue, Cleveland, Ohio.') 



MACHINERY PATENTS. 



CORD COVERING AND CORD FABRIC MACHINE. 



STRANDS of fabric are covered with rubber and strand fabric for 

 making cord tires is produced on this machine by the 

 calender method, and without crushing or distorting the strands. 

 A series of bobbins 

 1, 1, supply the 

 strands 2, that are 

 alined by comb 3, 

 and grooved roller 4. 

 In passing between 

 the calender rolls, the 

 strands are enclosed, 

 without pressure, be- 

 CoRD Fabric Machine. j^^^,, ^^„ sheets of 



rubber, one from the calender roll A, and the other from stock 

 roller 10. 



The sheet is thus passed between fluted pressure rollers 13 

 and 14 that embed the individual strands in the rubber without 

 flattening them, and the completed fabric is then wound up on 

 drum 17 with a liner from drum 18. (Melvon A. Marquette, 

 Springfield, assignor to The Fisk Rubber Co., Chicopee Falls, 

 both in Massachusetts. United States patent No. 1,321,223.) 



HOSE MAKING MACHINE. 



As shown in the horizontal sectional view, this is a two-screw 

 forcing machine for coating hose with rubber. 



In the operation the rubber from the pockets 3 is forced into 

 the die at diametrically 

 opposite sides of the tube 

 H. It flows in both di- 

 rections about the guide 

 19 as it moves through 

 the die to the opening 17. 

 Rubber from one screw 

 pocket passes upwardly 

 about the guide 19 

 while other rubber from 

 the same pocket passes 

 downwardly about the guide. These two bodies of rubber meet 

 corresponding bodies from the second screw pocket at a point 

 substantially midway and, due partly to the reducing diameter of 

 the die and partly to the churning, or agitating, action of the 

 closely juxtaposed screws, the joint between the meeting bodies 

 becomes more or less kneaded. A homogeneous union and an 

 even density is thus secured as the joining bodies are forced out 

 through the opening 17. 



The disposition of the screw pockets at an acute angle relative 

 to the line of feed of the tube H enables the rubber to move to- 

 ward and through the opening 17 without material change in its 

 general direction of travel. This also increases the efficiency of 

 the device and provides a structure in which no packing is re- 

 quired between any of the moving parts. (John M. Oden, 

 Brooklyn, New York. United States patent No. 1.322,464.) 



Two-ScREW Forcing Machine. 



OTHER MACHINERY PATENTS. 



THE UNITED STATES. 



237. Device for fastcni 

 Horton, Elizabeth. N. 

 ing Co., New York 



Single tube 



iiK together 

 J., assigno 

 City. 



rester 



A. O. Alsten, Wof 



Tire retreading apparatus. R. 



to Western Rubber Co., Chic; 



of said Brooks and G. W. Cla 

 Tire fabric testing machine. A. 



signer to the IJnited Stales Tire Co., New York City. 

 Apparatus and method for manufacturing tires with a spheroidal 



depression in one surface. J. A. Bowerman, assignor to The 



l''isk Rubber Co. — both of Chicopee Falls, Mass. 

 Apparatus for makinf; strand fabric. W. Jameson, Springfield, 



Tire vulcanizer. 



Carter, Radni 

 Co., Akron- 



Rubber Co., Chic 

 PfeiiTer, Akron, O. 



Kails— both 



fabric 



W. C. 

 Rubber 



to The 



ng y: 

 assignor to The Goodyear Ti 



ni. 



d J. T. Roberts- 



Machine for making tires. W. B. Harsel 



Goodyear Tire & Rubber Co.— both of Akn 

 Repair vulcanizer. F. G. Knoflicek, Silvis, 

 Tire core. E. A. Krannich, Columbiana, assignor of 'A 



L. A. Andregg, Mansfield— both in Ohio. 

 Device for peeling tires. E. P. Hafne: 



both of St. Louis, Mo. 

 Mold for making rubber articles. F. T. Roberts, Cleveland, O. 



195,882. 

 195,906. 



196,152. 

 196.207. 

 196.395. 



THE DOMINION OF CANADA. 



Portable repair vulcanizer. The Horsey Products Co., assignee 

 of E. T. Horsey— both of Cleveland, O., U. S. A. 



Apparatus for trimming edges of rubber articles such as boot* 

 and shoes. The Wood-Milne. Limited, Manchester, England. 

 assignee of J. Summer, Leyland, County of Lancaster, Eng- 



Dunlop Rubber 

 both in Eng- 



PROCESS PATENTS. 

 THE UNITED STATES. 



N' 



St. J _ 

 re of inflated 

 assignor 



with rubber. J. F. 



ted golf 

 to The 



195.739. 

 195.741. 

 195,926. 

 196,544. 



496,020. 

 496,659. 

 496,850 

 497,363. 

 497.415 

 497,423 

 497,489. 



THE DOMINION OF CANADA. 



ing tires. C. C. Gates. Denver. Col 



etreading tires, 

 etreading tires, 

 anufacture of 

 York City, U. 



Method of faste 

 automobiles. ( 



S. H. Goldberg., Chicago, III., U. ; 

 S. H. Goldberg, Chicago, 111., U. : 

 e casings. E. Hopkii 



"t-r^ 



Improved process 



K. Fukuda, To 

 Improved manufac 



manufacturii 

 Japan, 

 of rubber 



nproved construction of solid tir 



Limited, 

 nproved constriction of inner tu 



Dunlop Rubber Co.. Limited. 



•r tubes of bicycles and 

 ^. .Alstrup. 

 waterproof products. L. 



non-inflated rubber balls. 



es. The Dunlop Rubber 



The Dunlop Rubber Co., 





The 



