September 1, 1911.] 



THE INDIA RUBBER WORLD. 



479 



14,281/1910 

 27,398/1909 



4,001/1910 

 29,277/1909 

 29,666/1909 



4,572/1910 



4,620/1910 

 25,087/1910 



4,189/1910 



17,734/1910 



15,254/1910 



25,850/1910 



6,540/1911 



6,642/1911 



5,931/1910 



5,932/1910 

 14,040/1910 

 14,041/1910 



RECENT ENGLISH SYNTHETIC RUBBER PATENTS. 



Badische Anilin & Soda Fabrik Substances resembling rubber. 



E. Black, London ) ,. , . ..,,. .,.,,. 



G \ Morton Liveroool I Use of isoprene or .Mortoncnc with hemiterpenes or certain carbo- 



' ^ ' hydrates. 



Oswald Silberrad, Silbcrrad Rescarcli Laboratories, 



Buckhurst Hill Improvement in manufacture of isoprene from turpentine. 



George Lilley, Chemist to Synthetic Rubber Co., 



London •. Manufacture of mesoprene. 



F. E. Matthews... )t i t- > • 



E H. Strange ( i-ondon Synthetic manufacture of isoprene and rubber. 



F. E. Matthews... ) i ■ c- i • r r ■ 



E. H. Strange J l-ondon Synthetic manufacture of isoprene and rubber from amylic alcohols. 



F. E. Matthews... Ij , •,, c ^ rii i. ,. .. 



E. H. Strange \ ^"""°" Manufacture of rubber and intermediate product from rosin. 



G. Reynaud, 5 Rue Salneuve, Paris Treating turpentine with hydrochloric acid for industrial manufac- 



ture of rubber. 



F. E. Matthews... ii i n i x- r • /,,,,,,- 



E. H. Strange J London Production of isoprene (and rubber therefrom) from petroleum. 



Farben Fabriken, Elberfeld Result from heating isoprene. 



Farben Fabriken, Elberfeld Treatment of erythrene, etc. 



Do 

 Do 



Do 



W. H. Perkin 



Charles Weigmann 

 F. E. Matthews. . . 

 E. H, Strange 



Do 



Do 

 Do 

 Do 



• Manchester 

 ■ London . . . . 



J 



Improvements in synthetic manufacture of rubber. 



Synthetic manufacture of isoprene and rubber. 



Arthur Heinemann, London Improvements in production of isoprene. 



Arthur Heinemann, London Polymerization of isoprene. 



RUBBER STAMPS IN POTTERY DECORATION. 



\Y7IIILE the industrial use of rubber stamps was originally 

 *' confined to purposes of a practical and utilitarian char- 

 acter, their application to ornament and decorate is of more re- 

 cent date. The reproduction of designs, as to its detailed meth- 

 ods, is necessarily influenced by the character of the material 

 which is to receive the impression. While rigidity is in many 

 cases desirable in the stamp, in others the opposite qualities of 



^^fJWIU!!/,,,^ 



plied by hand to low-class ceramic articles displayed limited taste 

 and skill. To render it possible to bring out in such ware the 

 artistic effects now called for in staple ceramic products it was 

 necessary to bring out in a suitable material a range of orna- 

 mental stamps, for the reproduction at nominal cost of designs 

 at the same time of artistic and pleasing character. 



"Such an object has been fully and successfully accomplished 

 by the German firm of J. Bergeon, established in 1878, and mak- 

 ing a specialty of decorative stamps, composed of pliable vulcan- 



Rubber St.'Xmps for 



pliancy and elasticity have been called for. Rubber, it has been 

 conceded, displays in the highest degree the last-named 

 characteristics. 



In no branch of manufacture has the latter need been more 

 useful than in the ceramic and glass industries. "The Pottery, 

 Glass and Brass Salesman" says of ceramic rubber stamps : 



"With the object of placing at the disposal of the masses the 

 highest forms of modern decorative art, the ceramic industry had 

 to find a material suitable for use in processes of rapid and eco- 

 nomical reproduction. This requirement has been fully met by 

 the employment of rubber, the pliability and durability of which 

 rendered it specially adapted for the purpose in question. 



"In the old days, from motives of economy, the decon^tion ap- 



ized rubber, with a rubber sponge foundation, these stamps being 

 intended for the application of gold and colors on porcelain, 

 earthenware, glass enamel and other grounds." 



.Xniong the principal advantages claimed for these ornamental 

 rubber stamps is clearness and sharpness of outline, even in de- 

 signs of a complicated character nature. By the courtesy of the 

 journal already referred to, a few specimens are reproduced, 

 illustrating some of the results obtained by the skilled and intelli- 

 gent use of rubber stamps for ceramic decoration. The designs 

 run into thousands. They are infinitely diversified, embracing 

 all sorts of ornate designs in scroll work, geometric figures, coats 

 of arms, portraits, landscapes, etc. They vary in size from 1 inch 

 square to a foot square. 



