20G 



MACHINERY IX COXNECTIOX WITH WATER. 



distant markets. The following figure (fig. 233) exhibits 

 the different parts of this powerful machine. A is a cis- 

 tern to supply water, which is raised by working the han- 

 dle, B, of the forcing-pump ; the water passes through the 

 valve, C, opening upward, and through the spring valve, 



Fior. 233. 



Hydrostatic Press. 



D, opening toward the large cylinder, E. Being thus 

 driven into the space, E, it raises the piston, F, and exerts 

 a prodigious pressure upon the mass of hay or cotton, G. 

 The piston is lowered by turning the screw, 11, which al- 

 lows the water to pass back into the cistern at I. In the 

 figure the hay or cotton is shown as visible to the sight, 

 in order to represent the whole more plainly ; but in prac- 

 tice it is thrown into a square box or chamber of strong 

 plank, of the size of the intended bundle. One side is 



