80 GOODYEAR ON GUM-ELASTIC, 



cementing several layers of strong canvas together, according 

 to the size of the belt. The gum is also applied upon the out- 

 side of the belt. The article is becoming so generally knov^^n 

 and extensively used, that to speak of its qualities is unneces- 

 sary, except to say that in addition to its general usefulness, it 

 may be considered an indispensable article where belting has to 

 be run under water. 



WELL ROPES. 



Ropes, or India rubber covered cordage, or straps of narrow 

 machine belting, are advantageously used for wells, on account 

 of their water-proof qualities. 



DECKEL STRAP. 



The deckel strap is a belt of vulcanized gum-elastic, about one 

 inch in thickness, and one inch and one-fourth in width, and 

 from ten to twenty feet in length. This article is used as a part 

 of the fondernier machine for the manufacture of paper, and 

 prevents the pulp from escaping in the revolution of the machine. 

 This is one of those peculiar applications, in which both the 

 elastic and water-proof qualities of this substance are desirable, 

 and in which no other substance answers so good a purpose, as 

 it is run constantly in water. 



ELEVATORS. 



These are made of caoutchouc fabrics, the belt of the elevator 

 being made in the same way as machine belting. The buckets 

 may be made of tin, and attached in the same way as has com- 



