168 GOODYEAR ON 6U M- E L A S T I C, 



JAPANNING, BRONZING, PRINTING WITH TYPE, COPFER-PLATE, 

 BLOCKS, LITHOGRAPHY, &c. 



The application of these arts to gum-elastic, is so exactly like 

 the method in common use for paper and other articles, that 

 instructions on these heads would be quite superfluous, except 

 to say that for copper-plate, lithography, and type printing, the 

 fabrics do not require wetting like paper. 



GILDING. 



These fabrics cannot be gilded in the same manner as leather, 

 with a hot iron, because there is not sufficient adhesiveness in 

 the fabrics to cause the leaf to hold. Therefore, in order to gild, 

 varnish, or what printers term gold size, has to be used on the 

 type or plate, and the leaf is afterwards applied as in the art of 

 bronzing. 



PLATING. 



The term "plating" has been adopted for this improvement, 

 from its resemblance to the art of plating metals, and also to 

 distinguish it from the common method of coating India rubber 

 cloths. The invention consists in interposing a bat or fleece of 

 cotton wool, or other fibrous substance, between the coating of 

 gum and the fabric. The gum is thus in part intermixed with 

 the bat or fleece. Sometimes, however, the plating is prepared 

 first in the form which has heretofore been described as tissue ; 

 in either case, the gum is by this process prevented from peel- 

 ing off" and abrasion — the importance of which improvement is 

 further treated of under the head of " Plated Fabrics." It is by 

 this process of plating that the manufacture of porous fabrics 

 has been made practicable. 



