Engine for Maising Water « $9 
as it begins to descend, tbe stream flows over it, and goes 
to supply the wooden trough or well in which the foot of 
the forcing pump C stands, of three inches bore. 
D, is an iron cylinder attached to the pump rod, which 
passes through it. It is filled with lead, and weighs 
about two hundred and forty pounds. This is the power 
which works the pump, and forces the water through four 
hundred and twenty feet of inch pipe from the pump up 
to the house. 
At E is fixed a cord which, when the bucket comes to 
within four or five inches of its lowest projection, becomes 
stretched and opens a valve in the bottom of it, through 
which the water empties itself. 
I beg leave to add, that an engine, in a great degree 
similar to this, was erected some years ago by the late 
James Spedding, esquire, for a lead mine near Keswick, 
with the addition of a smaller bucket which emptied it- 
self into the larger, near the beginning of its descent, 
without which addition it was found that the beam only 
acquired a libratory motion, without making a full and 
effective stroke. 
To answer this purpose in a more simple way, I con- 
structed the small engine in such manner as to finish its 
stroke (speaking of the bucket end,) when the beam 
comes into an horizontal position, or a little below it. By 
this means the lever is virtually lengthened in its descent 
in the proportion of the radius to the cosine, of about thir- 
ty degrees, or as seven to six nearly, and consequently 
its power is increased 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 chose to give an exact description of the eit- 
* gine as it stands. It has now been six months in use, 
and completely answers the purpose intended. 
