APPLICATION OF GRAPHIC METHODS 



301 



of an engine employed to drive a long shaft with separate 

 bearings co-axial with the crank-shaft. 



19. Wedge. When a wedge is employed to form a complete 



Fy 23 



machine we find a dynamic frame of class 1, similar to that given 

 by the direct-acting steam machine. Fig. 2 1 shows a complete 

 wedge machine. The letters on the parts indicate the elements, 

 where e is the driving, and /the resisting element. Dotted lines 



