THE MANUFACTURE OF MONIER PIPES. 



XXXV. 



which a spindle and drum are horizontally placed, allowing of a 

 rotary motion, fast or slow, and maintaining them in any position 

 required. 





teas 



A 



m 



X A 



The drum is of light steel, collapsible, and closed at the ends 

 by wooden discs, which serve — 



Firstly, — To support the steel drum, and give the same the 

 required shape. 



Secondly, — As a connection between the drum and the spindle. 



Thirdly, — As a gauge for the thickness, and as faceboards for 

 the pipe. 



