THE miners' friend. 187 



Thoughts more Intensely about it ; especially such as have 

 not been familiar and acquainted with things of this kirid. 

 But should the Evcjiyn^ to the Apprehension of some, seem 

 intricate and difficult to be worked, aft.er all the Description 

 I have given of it in this Book ; yet I can, and do assure 

 them. That the attending and working the Engine is so far 

 from being so, that it is familiar and easie to be learned by 

 those of the meanest Capacity, in a very little time ; insomuch, 

 that I have Boys of 1 3 or 1 4 years of Age, who now attend 

 and work it to j)erfection, and were taught to do it in a few 

 days ; and I have known some learn to work the Engine in 

 half an hour. We have a Proverb, That Interest never lyes : 

 And I am assured that you Gentlemen of the Mines and 

 Collyeries, when you have once made this Engine familiar in 

 your Works, and to your Selves and Servants ; not only the 

 Profit, but abundance of other Advantages and Conveniencies, 

 which you will tind to attend your Works in the Use 

 thereof, will create in you a favourable Oi)inion of the 

 Labours of 



Your real Friend 

 ^""""^^J^p^- 22. and humble Servant, 



Tho. Saveky. 



A DESCRIPTION OF THE DEAUGHT OF THE 

 ENGINE, FOR RAISING WATER BY FIRE. 



A. The Furnaces. 



B B. The two Fire places. 



1 2 



C. The Funnel or Chimney. 



B. The small Boyler. 



E. The Pipe and Cock of it. 



F. The Skrew that Covers and Confines its Force. 



G. a fmall Cock a Pipe going within Eight Inches of its 



Bottom. 

 M. a larger Pipe going the same Depth. 

 Z a Clack on the top of the said Pipe. 

 K. a Pipe going from the Box of the said Clack or Valve, 



into the great Boyler, about an Inch into it. 



