282 GOODYEAR ON GUM-ELASTIC. 



CHAIR. SHOES 



Are made of gurn-elastic sponge, or elastic compound, in the 

 same manner as hollow ware ; in this way an elastic ball or foot 

 of any required shape is made, that is fitted into a socket which 

 fits the foot of the chair, as repi'esented in the plate , fig. 1 

 and 2. 



The socket may be made of brass or iron, or of caoutchouc 

 ivory. When made of the latter material, it is attached to, 

 and forms a part of the shoe. 



The improvement consists in preventing noise and the wear 

 of carpets. Another consideration, which will probably be 

 deemed of importance by many, is perhaps worthy of notice. 

 It is a well-known fact, that gum-elastic is one of the best non- 

 conductors of electricity. It is so completely so, that a person 

 having on India rubber shoes, sitting upon a chair of this kind, 

 or lying upon a bed provided with similar shoes, need have little 

 apprehension of danger from lightning. 



CARTMEN'S WALLETS 



Are made of vegetable leather. They are commonly attached 

 between the two front stakes of the cart, and used by cartmen 

 as a sort of portfolio or pocket, for containing papers, or other 

 light articles, which it is desirable to keep dry. 



ox BUTTONS. 



These are made of gum-elastic sponge, in the same manner as 

 hollow ware, as a substitute for the metal article heretofore 

 used. 



