296 



THE INDIA RUBBER WORLD 



(June i, 1906. 



28,743 ('904)- Hose coupling. A. E. Stove, London 



28,743 A (1904). Hose coupling. Same. 



28,819 (igo4). Respirator. W. J. Keymer, London. (R. C. C. 

 Baldrey, Coimbatore. Madras, India. ) 



»28 82i (1904). Elastic tire. J. R. Hill, Washington, D. C. 



28,854 ( [904). Cover for pneumatic tire [made by winding a strij) 

 of rubber fal)ric helically around two rings |. H. W. Cave- 

 Browne, London. 



28,872 (1904). Pump for inflating tires. G. Hagendorf, Rranden 

 burg, Prussia. 



28,982 (1904). Means for attaching rubber heels to boots. R- \V. 

 Barker, London. (J. Griiu, Budapest, Hungary.) 



29,030 ( 1904). Finger stall [for protecting the finger in writing]. 

 C. W. T. Davies, West Haling, Middlese.v. 



[Ahstracted in the Official Journal, Ai'kil, 25, 1906.] 

 29,080(1904'). Pneumatic tire. R. Dalmcr, London. 

 29,107 (1904). Telephonic apparatus for diving purposes. R H. 



Davis, and A. Graham, Surrey. 

 29,114(1904). Diving apparatus. H. H. Lake, Middlesex. (G. 



Restucci, Naples, Italy.) 



* 29,154 (1904) Medical appliance having a flexible bhib. I". 



Hoffman, New York. 



*29.i55 (1904). Pneumatic tire [with a central core of fabric in- 

 terposed between layers of rubber]. P. W. Litchfield, Akron, 

 Ohio. 



29,192(1904). Collapsible bath. .\. Grosbois, Paris 



* 29,286 (1904). Pneumatic tire. O. Imray, London. (H. A. 



Palmer, Erie, Pennsylvania. ) 



♦29,396 ( 1904). Golf ball [covered by winding a Gutta-percha 

 strip around the core, the object being to produce a cover 

 without a seam|. H. H. Lake, Middlesex. (Perfect Golf 

 Ball Co., New York.) 



29,523 (1904). Elastic tire. J. Wilson, West Croydon, Surrey. 



29,580 ' 1904). Method cleaning hose pipes. Boake, Roberts cS: 

 Co., Stratford, and .\. Berry, Forest Gate, Essex. 



29,614 (lqo4). No/zle [for connecting a rubber hose to a tap]. W. 

 J. George, Birmingham. 



29,640 (1904). Tire tread of leather. T. Mitchell, Bingley, York- 

 shire 



THE FRENCH REPUBLIC. 



Patents Issued (With Dates of Application.) 

 358,361 (Oct. 9, 1905). O. Patin. Elastic core for cushion tires. 

 358,367(001.9). Gregaud. Skid tread. 



358,436 (Oct. 11). E Sloper. Improvements in pneumatic tires. 

 358,471 (Oct. 13). P. Baranton. Pneumatic tire filled with system 



of multiple air tubes. 

 358,493 (Oct. 4). A. F. Michot. Metallic pneumatic tire. 

 358,516 (Oct. 14). Fleming & Co. Patch buttons for tire tubes. 

 358,524 (Oct. 14). Granjon & Berchet. Skid treads. 

 358,609(001.17). Walker iS: Jacobson. Shock absorber. 

 358 635 (Oct. iS I. Korner. Rubber reclaiming. 

 358,639 (Oct. 18). Caen. Spring wheel. 

 358 697 (Oct. 20). J. B. Robinson. Vulcanizing together the ends 



of inner tubes. 

 358,717 (Oct. 23). Soci^te Mouilbau, Fayand & Co. Improve- 



nients in strap making. 

 358,789 (Oct. 24). Sanlay. Spring wheel. 

 358,812 (Oct. 24). J. C. Bunge. Tire protector. 

 358,824 (Oct. 25). Soci^'te des usines Rousselot & Videco(| r^unies 



Skid tread. 

 358,963 (Oct. 28). Chaboche. .-Vnli-skid wheel. 

 358,978 (Oct. 30). \\ Midgley. FUastic tire. 

 358,996 (Oct. 26). J. Lelong. Punctureproof tread. 



[.VoTK. — Printed copies of specifications of French patents may be olilained 

 from R. Bobet, liigenieue-Counseil, 16 avenue de Villiers, Paris, at 50 cents each, 

 postpaid.] 



Editorial Amenities in Vermont. — Addi.son county 

 automobilists can get tlieir tires pumped full of hot air 

 free of charge by stopping at 7 lie Register oSice in Middle- 

 bury. — St. Albans Messenger. 



A CARD FROM MR. HEYL-UIA. 



'^10 THE IvniToK oi" The lNni.\ Ruhher World ; I note 



-•- in your last issue a reference to my syntlietic rubber, 

 which contains remarks made by someone in Ivngland. I 

 should like to state once and for all that the rubber made 

 according to nij' process and master patent represents the 

 production of chemically constituted rubber from substances 

 which are hydrocarbons. 



The materials used contain, of course, a very consider- 

 able quantity of hydrocarbons, which I have been able to 

 convert into rubber at the present time, and which is the 

 cause of the synthetic or " Yucutan " rubber — as I have 

 called it — ranging as to its comnierciai value with Borneo 

 No. I, or other crude rubbers of the value of 95 cents, pres- 

 ent market prices, washed and cleaned. 



Your correspondent's statement that Para rubber is pro- 

 duced at a shilling a pound is not e.xpressed by the present 

 market price of Para, nor is it e.xpressed by the market price 

 of other rubbers not coming from Para. If your correspond- 

 ent would be kind enough to furnish me with a million tons 

 of Para at a shilling a pound, I am sure that I could dispose 

 of this qtiantity at a very handsome profit. 



Against Gutta-percha as a mixture, my material is en- 

 tirely based upon chemical action, and I make the state- 

 ment, without fear of contradiction, that it is impossible by 

 anv known chemical means to reconstruct the materials used 

 in the production of " Yucutan " rubber. I should be glad if 

 you will publish this in reply to your correspondent's re- 

 marks, and remain, Yours faithfully. 



G. E HEVL-DIA. Consulting Expert. 

 New N'ork, May S. iQr)6. 



RUBBER DOORS FOR GAMBLING HOUSES. 



'T^HE police of New York are accustomed to trouble in 

 -^ entering gambling houses, "pool rooms," and the 

 like, through having to break down heavy doors of wood 

 and iron. According to the Nevv' York World, the lot of the 

 policeman has been rendered harder through the addition to 

 such doors of a 4 inch thickness of solid rubber, so that when 

 the police axes and sledge hammers strike the door thej- re- 

 bound. 



" I was knocked clean off my feet the first time I struck 

 one of the rubber doors," said a detective. " The force of 

 my blow striking the sheet iron, wood, and rubber drove me 

 back at least five feet." 



These peculiar doors cost sometimes as high as Si 00, but 

 the pool room owners say that the}- save money even if they 

 hold back the police raiders for 5 minutes. It gives time to 

 destroy racing sheets and other dangerous evidence. The 

 sheet iron and wood doors are strong enough to keep the 

 police sledge hammers at work for 5 or 8 minutes, and the 

 rubber doors are counted upon to make a delay of 12 to 15 

 minutes. 



The business of constructing heavy doors for the uses 

 mentioned above is reported to have been carried on for 20 

 years by "Old Jack "Woods, of the Bowery, his only recog- 

 nized rival being Sing Gow, who does similar work for the 

 Chinatown gambling dens. 



The Latest Definition.— A man with an elastic step may 

 call himself a rubber planter. — Mexican Herald. 



