

ENGINE FOR RAISING VVAJTER. 6"i 



210 lbs. This is the power which works the pump, and forces and this laft in 

 the water through 420 feet of inch pipe from the pump up to ^ \^£™ k * 

 the houfe. pump. 



At E is fixed a cord which, when the bucket comes to The bucket h 

 within four or five inches of its loweit projedion, becomes ™^*™W 

 itretched 3nd opens a valve in the bottom of it, through which ft,i ng . 

 the water empties itfelf. 



I beg leave t» add, that an engine, in a great degree fimt- 

 kr to this, was erected fome years ago by the late James 

 Spedding, Efq. for a lead-mine near Kefwick, with the ad- 

 dition of a fmaller bucket which emptied itfelf into the larger, 

 near the beginning of its defcent, without which addition it 

 was found that the beam only acquired a libratory motion, 

 without making a full and effective ftroke. 



To anfvver this purpofe in a more fimple way, I conftructed Contrivance to 

 the fniall engine in fuch manner as to finifh its ftroke (fpeak- ftro j ce% 

 ing of the bucket end,) when the beam comes into an hori- 

 zontal pofition, or a little below it. By this means the lever 

 is virtually lengthened in its defcent in the proportion of the 

 radius to the cofine, of about thirty degrees, or as feven to fix 

 nearly, and confequently its power is increafed in an equal 

 proportion. 



It is evident that the opening of the valve might have been 

 effected, perhaps better, by a projecting pin at the bottom ; 

 but I chofe to give an exact defcription of the engine as it 

 (lands. It has now been fix months in ufe, and completely 

 anfwers the purpofe intended. 



The only artifts employed, except the plumber, were a *' 5s wcr >' cI>ea P« 

 country blackfmith and carpenter; and the whole coft, exclu- 

 sive of the pump and pipes, did not amount to £5. 

 I am, Sir, 



Your humble fervant, 



H. SARJEANT. 

 Warwick Court, Holborn. 

 Mr. Charles Taylor. 



In another letter, dated Whitehaven, April 28, 1801, Mr. With a fal1 of 

 Sarjeant further obferves that the pump requires about eighteen f umpt i on f ,'g 

 gallons of water in the bucket to raife the counter-weight, gallons, it raifts 

 and make a frefh ftroke in the pump; that it makes three gj jJJ^ That'?* 

 ftrokes in a minute, and gives about a half-gallon into the cif- to fay ji parts of 



■ tern. 



