December 1, 1916.] 



THE INDIA RUBBER WORLD 



145 



by a shaft and gearing to the main drive shaft A.'. The feed- 

 mechanism consists of an endless belt L provided with projec- 

 tions and spring-pressed rollers M that are adjusted by hand 

 wheels A^. [C. E. Gardner, Gloucester, Gloucestershire, Eng- 

 land. British patent No. 10,015 (1915).] 



MACHINE FOR MOLDING AND VUXCANIZING HOLLOW RUBBER 

 ARTICLES, 



.\ccording to this invention the method of making rubber 

 bulbs is simplified and the production materially increased. 

 Briefly, the operation consists in drawing the stock by vacuum 



into the mold cavi- 

 ties, the edges of the 

 two halves of the 

 bulb being then 

 brought into close 

 contact and vulcan- 

 ized. 



The drawing is a 

 vertical section of 

 the machine, which is 

 a three-ram type of 

 hydraulic press. The 

 mold plates A and B 

 comprise 25 mold 

 cavities, each being 

 provided with a small 

 opening communicat- 

 ing with air chambers 

 C and D in the upper 

 and lower head. 



Two metal plates, 

 adapted to support the 

 disks of rubber stock, 

 are placed back to back and inserted between the mold plates 

 where they are alined by dowel pins. The mold is then 

 closed by the hydraulic rams E and F and a vacuum applied 

 to the air chambers, exhausting the air in the mold cavities and 

 thereby drawing the rubber stock into them. When the bulb 

 halves have thus been molded, the mold is opened and the 

 metal plate removed. Then the hollow platen G is moved 

 upward by the ram H until it contacts with the sealing gasket 

 in the upper platen. Air under pressure is admitted to the 

 hollow platen, filling the mold cavities, and then the lower mold 

 is raised by the rams £ and F , thereby closing the mold, uniting 

 the bulb halves and entrapping a certain amount of compressed 

 air. The bulbs are vulcanized by exhausting the air and ad- 

 mitting steam to the chambers surrounding the mold. [Fred 

 T. Roberts, Trenton, New Jersey, United States patent No. 

 1,201,503.] 



A more recent invention by the same inventor provides a 

 process and apparatus for releasing hollow inflated articles 

 from the molds. [Fred T. Roberts, assignor to the Aranar Co. — 

 both of Cleveland, Ohio. United States patent No. 1.201.627.] . 



1,201,397. 



1,201,406. 



1,201,473. 

 1,201,774. 



1,201,778. 



1,202,452. 

 1,202,654. 

 1,204,021. 

 1,204.213. 



OTHER MACHINERY PATENTS. 



THE UNITED STATES. 



Tire repair vulcanizer. F. S. Wahl, North Tonawanda, assignor 

 of one-half to G. G. Mattern, Kenmore — both in New York. 



Apron for mixing mills. H. A. Welton and H. J. Hoyt, as- 

 signors to Morgan & Wright — all of Detroitj Mich. 



Device for painting golf balls. C. H. Lambert, Asheville, N. C. 



Machine for constructing a laminated cohesive interwound fabric 

 band. I-. A. Subers, East Cleveland, Ohio. 



Tire mounting implement. W. L. Weber, assignor to The Es- 

 senkay Products Co. — both of Chicago, 111. 



Tire rim tool. T. V>. Stroud, Pass Christian, Miss. 



Rim tool. F. A. Berry, Loudon, Tenn. 



Portable vulcanizer. E. T. Horsey, Cleveland, Ohio. 



Tube wrapping machine. J. A. Vey, assignor to Continental 

 Rubber Works — both in Erie, Pa. 



171,104. 



171,174. 

 171,440. 



171,637. 

 171.656. 



1,204,342. Machine for wrapping hose and similar articles. H. Z. Cobb, 

 Winchester, Mass., assignor to Revere Rubber Co., Olneyville, 

 R. I. 



1,304,357. Apparatus for treating fibrous materials. E. D. Jetferson, Bos- 

 ton, Mass. 



THE DOMINION OF CANADA. 



Tire rim tool. The Burrill Tire Too! Co., assignee of F. If. 



Burrill — both of Concord Junction, Mass. 

 Tire rim tool. A. A. Friestedt, Chicago. 111. 

 Machine for winding tape on wire. Canadian Consolidated Rubber 



Co., Limited, Montreal, Quebec, Canada, assignee of T. Midgley, 



Lancaster, Ohio. 

 Rubber heel meld. J. G. Tutford, Elyria; Ohio. 

 Flap trimming machine. The Canadian Consolidated Rubber Co., 



Limited, Montreal, Quebec, Canada, assignee of T. Midgley, 



Lancaster, Ohio. 



i 

 THE UNITED KINGDOM. 

 9,039 (1915). Apparatus for treating rublier latex. 

 Road, Edinburgh. 

 9,427 (1915). Tool for tapping rubber trees. F. E. 



British North Borneo. 



9,454 (1915). Pneumatic tire mold witli expansible ring. 



2 I^udgate f-Iill. Birmingham. 



Guards for rubber mills. L, Gaisman, 106 Birch Lane, Longsight, 



and S. Dreyfus, Thorncliffe Villa, Windmill Lane, Denton — both 



in Manchester. 



Rubber tapping tool. S. Johno, 401 North Bridge Road, Singapore. 



Rubber pad in sole laying machine. Atlas-Werke Pohler & Co., 



Stotteritz, Leipzig, Germanv. 



THE FUENCH REPUBLIC. 



(December 23, 1915). Improvements in cores used in vulcanizing. 

 Heinig Johnston and Ohls. 

 480,583 (December 31, 1915). Improvements in apparatus for molding 

 tires. J. H. Coffey and Coffey, Jr. 



S 



Milne, 11a Grange 

 Lease. Sapong Estate, 

 F. h. Byrne, 



101,325. 



101,395. 

 101,416. 



480.512 



PROCESS PATENT. 



Elimin.ming Porosity in Rubber Soles. The parts com- 

 prising the bottom being assembled, they are placed in a cham- 

 ber and subjected to a temperature of 130 to 135 degrees F. for 

 36 hours, thereby eliminating all air, naphtha or other entrapped 

 gases. The bottoms are then attached to the upper and the boot 

 or shoe is vulcanized. [W. Mellersch-Jackson, London, England. 

 (Coinmunication from Boston Rubber Shoe Co., Maiden, Massa- 

 chusetts.) British patent No. 16,226 (1915).] 



OTHER PROCESS PATENTS. 



THE UNITED STATES. 

 Process of manufacturing brushes. A. H. Timmis, Harrow, 

 assignor to Rubber Set Brush Co., Limited, London — both 

 in England. 



THE DOMINION OF CANADA. 

 Process for the manufacture of tire fabrics. 

 France. 



THE FRENCH REPUBLIC. 

 480,713 (January 19, 1916). Process for manufacturing 

 frames without seams and without usuig a mold 

 480.735 (January 20, 1910). Elastic fabric adapted to masks for protection 

 against asphyxiating gas; to suspenders, corsets, orthopedic ar- 

 ticles, etc., and process for its manufacture. L. Brun. 



1,202,244. 



171.196. 



L. Lias, Paris, 



rubber eve-glass 

 E. Kalker. 



MISCELLANEOUS PATENT. 



A FRENCH STUDDED-TREAD TIRE. 



In this tire the use of rubber has been avoided as iriuch 

 as possible. The casing is built up in the usual way, of several 

 plies of frictioned fabric. On this is fitted a protecting cover 

 made of leather or similar material and provided with metal 



studs. 



Referring to the cross-section of 

 the tire, A is the casing and H the 

 leather protecting cover which is 

 held in place by rivets C. 



The leather tread D, which may 

 be made of other material than rub- 

 ber, if desirable, is fastened to the 

 protecting cover by stud-rivets E, 

 which extend through the fabric 

 plies. The beads F are made of 

 leather, or similar material, and ap- 

 plied to the casing in the usual manner. [K. Pauli and Bcnniger. 

 French patent No. 480.166 ("July. 1915).] 



