524 Description of a Machine for pumping Water 



To convey a clearer idea of the working of the buckets, 

 the two pulleys o a have been st'parated, and the aperture 

 of the well widened; but they may be joined in a parallel 

 manner on one and ihe same pin or pivot. 



To conclude: This mechanism may be modified accord- 

 ing to circumstances. If the well be situated in low ground, 

 the reservoir must be raised to a height sufficient to com- 

 mand the whole garden. 



On the banks of a river, it will be sufficient to drive two 

 piles into the current: they will support the extremity of 

 two horizontal beams, the other extremity of which will 

 rest on the bank. The whole mechanism will be establislied 

 on these two powers, and the reservoir situated on the banks 

 will i)e raised to the height desired, in order that the water 

 may be carried to a distance by means ot" wooden troughs 

 or gutters. 



The mechanism exhibited in fig. 2. seems best calculated 

 to lessen manual labour in procuring a supply of water by 

 the machine in question. The windlass is a common car- 

 riage wheel, furnished with a handle. But in order to ob- 

 tain a still more certain and powerful result, we might fur- 

 nish the extremity of the roller i with a wheel and pinion 

 (fig. 3) : this very simple mechanism would enable a child 

 to work the machine. 



As to the disposition of the cords, pulleys, and rollers, an 

 inspection of the plates will suffice. We would recom- 

 mend, however, to place the pulley at such a height, that 

 the bucket may be perfectly developed on rising to the 

 height of the reservoir ; ^ve ought to attach the cords to the 

 two extremities of the roller which serves for the windlass, 

 and, if it is possible, proportion the length of this roller to 

 that of the cords which it ought to receive; for it would be 

 desirable that they should not make several revolutions 

 upon themselves; which nevertheless can scarcely be avoid- 

 ed when the well is very deep. 



As to the proportion of each bucket, and its capacity, it 

 roust vary according to the quantity of water wanted ; but 

 in order to a .oid the trouble of calculation to our readers, 

 we shall give an approximate table.' 



KvtTV bucket represents a truncated cone. 



A cone five feet in height, on a base twenty inches in 

 diameter, will contain 3,38 cubic feet of water, or ninepail- 

 fuls and nine tenths *. 



* We have here valued the dimensions of a pail at nine inches in diameter 

 by six inches in height, and consequently its capacity at 0,36 of a cubic 

 foot. 



A cone 



