214 



THE INDIA RUBBER WORLD 



[March i, ipoy. 



21,340 (1907). Golf ball with core of rubber wound thread and gutta- 

 percha cover. J. H. Roger, Glasgow. 



21,361 (i907">. Spring wheel with tire of tread members resting upon a 

 pneumatic cushion enclosed by side plates. L. IIcuscli, Paris, France. 



21,443 (1907). Construction of hose pipes. E. L. Curbishley and Gorton 

 Rubber.' Co., Ltd., Openshaw, Manchester. 



21,471 (1907). Tire composed of thick bands of leather and rubber rest- 

 ing upon laminated plate springs. A. H. Swinton, London. 



•21,473 (1907). Pneumatic tire with puncture preventing device consisting 

 of hinged metal plate inside the cover. ^L M. Mills, Kingsbridge, 

 New \ork. 



[Abstracted in the Iixustrated Official Journal, January 27, 1909. 1 

 21,700 C1907). Metallic puncture preventing band to fit between the air 



tube and cover of pneumatic tires. A. Hopkins, Dartford, Kent. 

 21,726 (1907). _ Circumferentially divided rim for pneumatic tires. S. Z. 



de Ferranti, Grindleford, Derbyshire. 

 21,772 (1907). Synthetic india-rubber. A. Heinemann, Maida Vale, 



London. 

 *2i,8o9 (1907). Men's garters. G. H. Phelps. Boston, Massachusetts. 

 21,863 (1907). Fabric construction for tire covers. E. Herkner, Ober- 



schoneweide, Berlin, Germany. 

 21,887 (1907). Automatic inflator for motor car tires. G. T. Adams and 



W. G. Martin. Tonbridge Wells, Kent. 

 a',893 (1907). Heater for denial rubber. C. E. Woodstock, Carlisle. 



THE FRENCH REPUBLIC. 



PATENTS ISSUED (with Dates of Application). 



393-551 (Aug. 6, 190S). F. Oialmandrier. Employment of gelatine in tire 

 repairs. 



393,590 (Aug. 21). Trigwell. Repairs for tire covers. 

 393,649 (Aug. 25). R. J. Evans. Rubber tire. 

 393,669 (Oct. 31, 1907). Pneumatic tire. 



393.754 (July 21, 1908). A. G. Chamboniere. Two piece rim for tires. 

 393,767 (Aug. 5). de Launay and la Mothaye. Protector for pneumatic 

 tires. 



393.831 (Aug. 31). L. Eoirault, P. Boucher and M. Dechaume. Wheel 

 with elastic tire. 



393,841 (Sept. l). F. Weith. Cover for pneumatic tire. 



393,849 (Nov. 7, 1907). A. Loiseau. Pneumatic tire. 



393,857 (Sept. I, 1908). A. M. MacFarland. Tire. 



393.865 (Sept. i). J. L. G. Dykes. Tire. 



394.007 (Sept. 7). E. Degener-Eoning. Elastic tire. 



394,046 (Nov. 15, 1907). D. Lance. Elastic tire. 



394.117 (Sept. II, igo8). G. Middleton. Protector for tires. 



394,015 (Sept. 7). O. Vogel. Electric storage apparatus. 



394,198 (Nov. 19, 1907). A. Wolber. Pneumatic tire. 



394,355 (Sept. 16, 1908). C. G. Rodeck. Wheel tire of steel cables. 



also specimens of tlic impure rii1)bcr as extracted by the natives, 

 and a herbarium specimen of the leaves and flowers of Lan- 

 dolpliia Tlwllonii. [This plant is illustrated in The 1nui.\ Rub- 

 ber WoRLn, May i, 1903 — page 261.] 



[Note. — Printed copies of specifications of French patents may be ob- 

 tained from R. Bobet, Ingenieur-Conseil, 16 avenue de Villier Paris at 

 50 cents each, postpaid.] ' ' 



"LANDOLPHIA" ROOT RUBBER. 



[from the kew "bulletin," .n'o. 10, 1908.] 

 lyiR. FELIX H. HUNICKE, of the Continental Rubber Co. of 

 America, whose name is well known in connection with the 

 guayule rubber industry of Me.xico, has recently visited the 

 neighborhood of the Black River, Stanley Pool District, Congo 

 Free State, and has kindly presented to the Royal Botanic 

 Gardens, Kew, a series of samples illustrating the process which 

 he has evolved for obtaining a good sample of rubber from the 

 bark of the roots of Laiulolphia Tlwllonii. The roots are cut 

 up into sections from which the bark is removed, and the woody 

 portions are then discarded. The separated bark is then placed 

 in the "Hunicke" machine and grotmd to powder, with the result 

 that the finely granulated bark falls out and the rubber is left 

 behind. This rubber appears to be practically free from the 

 impurities of pieces of bark which are always to be found in 

 considerable quantity in the rubber as extracted by the natives. 

 The rubber may be sheeted or exported direct in the somewhat 

 granular form in w-hich it is turned out by the process. The 

 rubber is of very good quality, and the yield from the roots is 

 said to be about 10 per cent. .\s the process is of a simple 

 character, and there is an abundance of water power, the new 

 process seems likely to make a considerable advance in the value 

 of the Landolphia root rubber. The value of the Landolphia 

 does not end with the rubber, for from the granulated bark a 

 fine, rich, red brown dye is obtained. Mr. Hunicke has pre- 

 sented samples both of the granulated bark and of the dye, and 



"PALO AMARILLO" AGAIN. 



T^IIE enterprise known as the Consolidated Palo .\marillo 

 ■^ Rubber Co. [see The India Rubber World, February i, 

 1909 — page 191] continues to attract much attention in the Mexi- 

 can press. The report generally is that the company has been 

 formed to work under a concession carrying the exclusive right 

 to extract rubber from two wild trees, "Palo amarillo" and 

 "Amate," which thrive in different parts of the republic, and to 

 make rubber goods and by products from the material gained. 

 Work must be in progress on a commercial scale within three 

 years from February I last. The company is incorporated in 

 one of the western United States, with $20,000,000 capital author- 

 ized, and the officers are George W. Young, president ; Robert 

 H. McCurdy, vice president; and Frederick Kopf, all connected 

 with prominent New York business houses, and William H. 

 Ellis, described as a banker and broker. New York and Mexico 

 City, general manager. These details are supplied to The India 

 Rubber World by W. H. Ellis. Further information could not 

 be obtained at the banking office of George W. Young, No. 59 

 Cedar street. New York. 



* * * 



There is so much interest of late with regard to "Palo ama- 

 rillo" that the following statement which comes from one of the 

 best equipped chemical laboratories making a specialty of india- 

 rubber, is timely : 



"We had some of the latex sent up and the samples we made 

 from the milk of the latex gave us in gum 34 per cent, and resin 

 6 per cent. The gum gave absolutely no cure and gave no elas- 

 ticity. We have never been able to find any trace of rubber in 

 the gum, but the gum was a rubber like gum but so sticky that 

 it could not be worked on a mill. It might make a first class 

 fly paper." 



NEW GUAYULE RUBBER FACTORIES. 



ANEW factory is being erected at Puerto del Carmen, in the 

 state of Coahuila, Mexico, to extract rubber from the 

 guayule plant, by Compania Guayulera de Torreon, S. A. men- 

 tioned in The India Rubber World, July i, 1907 (page 320). 

 The officers are Manuel Garza Aldape, president ; Baltazar G. 

 Peila, vice-president and manager ; and G. G. Barreda, secretary. 

 These, with Adolfo Aymes and Alelesio Garza, form the directory. 

 A letter to The India Rubber World regarding this company 

 says : "They have stunipage contract covering a long period on 

 an immense tract of land, covered with guayule, located in the 

 northern part of this state, and some 100 miles west and south 

 of the Texas line. This contract was entered into under very 

 favorable conditions some time ago, and the erection of a factory 

 plant has been contracted for. They expect to become large 

 producers of rubber when the market will justify it, and at 

 present will extract some 25 tons per month, and the product will 

 probably be contracted to European concerns." 



R. L. Bonnet, who is manager of the American Bank of Tor- 

 reon, and Enrico Notholt have undertaken the erection of the 

 factory, for which purpose they are mentioned in the Mexican 

 newspapers as having asked the government for exemption from 

 taxation for 10 years on a certain amount of capital to be in- 

 vested in its construction. 



Compaiiia Guayulera de Saltillo was mentioned in the Torreon 

 (Mexico) Enterprise of February 6 as about ready to begin on 

 a large scale the operation of their plant at Saltillo for the ex- 

 traction of rubber from the guayule shrub, by a special chemical 

 process. 



