AN IMPROVED MODE OF APPLYING WATER. POWER
Year: 1839

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
DAVEY, of Llandudno, in the County, of Carnarvon, Mining Agent, send greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by
Her Letters Patent under the Great Seal of Great Britain, bearing date at
Westminster, the Second day of December, in the third year of Her reign, did,
for Herself, Her heirs and successors, give and grant unto, me, the said George
Davey, Her especial licence that I, the said George Davey, my exors, adñiors,
and assigns, or such others as I, the said George Davey, my exors, adññiors; or
assigns, should at any time agree with, and no others, from time to time and
at all times during the term of years therein expressed, should and lawfully
might make, use, exercise, and vend, within England, Wales, and the Town
of Berwick-upon-Tweed, and also in all Her said Majesty's Colonics and Plan-
tations abroad, my said Invention of "AN IMPROVED MODE OF APPLYING WATER.
POWER;" in which said Letters Patent is contained a proviso obliging me, the
said George Davey, by an instrument in writing under my hand and seal, par-
ticularly to describe and ascertain the nature of my said Invention, and in what
manner the same is to be performed, and to cause the same to be inrolled in Her
said Majesty's High Court of Chancery within six calendar months next and
immediately after the date of the said recited Letters Patent, as in and by the
same, reference being thereunto had, will more fully and at large appear.

page_text: NOW KNOW YE, that in compliance with the said proviso, I, the said
George Davey, do hereby declare the nature of my said Invention to consist
in applying the pressure of a high column of water to compress air in a series
of air vessels in such manner, that when a vent is given to the said air and
water, at the lower end of the said column, the expansive force of the one
and the pressure of the other yield an available motive power. And in fur-
ther compliance with the said proviso, I, the said George Davey, do hereby
describe the manner in which my said Invention is be performed, by the fol-
lowing statement thereof, reference being had to the Drawing annexed, and
to the figures and letters marked thereon (that is to say):-
DESCRIPTION OF THE DRAWING.
Figure 1 represents my improved mode of applying water power, applied to
the pumping of water out of a mine, A being the upper end of a mine shaft,
and B the upper end of a pump rod for raising water from the bottom of the
mine. This pump rod B, it will be seen, is attached at C to the piston or
plunger rod D, D, D, which plunger rod D is put in motion as herein-after
described. E is a cylinder, in which the plunger or piston F works up and
down alternately. G, G, G, is a vertical large tube or cylinder to contain the
column of water, the pressure of which is to create the power that is to move the
plunger F. On a level with the upper end of this tube G is the reservoir H,
which feeds it with water through the pipe J; at intervals of not more than
thirty feet each air-tight jackets or vessels K, L, M, N, O, are placed, sur-
rounding the tube G, and communicating with it only through the holes at P.
Between the cylinder E and the lower air vessel O is placed a small cylinder Q,
having one upper aperture or channel R communicating with the air vessel O,
and one lower aperture or channel S communicating with the cylinder E. This
small cylinder Q is fitted with a double piston (or, as they are sometimes
called, dead boxes) on one piston rod T, T, which, when raised, as shown in
this Figure, shuts off the communication between the air vessel O and the
cylinder E, and opens the aperture S to allow of the cylinder E emptying
itself of its contents into the discharge level U. The rod T, T, of the double
piston is acted as required upon by the tappets V, W, on the plunger rod D,
which act upon the ordinary tumbler bob X, and levers connected therewith,
as here shown; Z, Z, is the ordinary balance bob beam. The effect of this
arrangement of apparatus will be as follows:-As soon as the cylinder E has
emptied itself, the plunger F and rod D will have descended as far as the
bottom of the cylinder E, and in its descent the tappet V will have acted
upon the lever Y of the tumbler bob X, which will strike down the rod T, T,

page_text: of the double piston till that piston has descended low enough in the cylinder Q
to close the bottom of the cylinder Q, and thus prevent any further commu-
nication with the discharge lever U, and to open a communication between the
cylinder E and the air vessel O, through the two channels R and S. The effect
of this will be, that the compressed air in the air vessel O will instantly drive a
quantity of air and water into the cylinder E, forcing up the plunger F and
plunger rod D, which rising of the rod D will cause the tappet W to strike
up the lever of the tumbler bob X, and thus again close the communication
between the cylinder E and the air vessel O, and allow the contents of the
cylinder E again to flow off into the discharge level U. Thus it will be seen
that a continued alternate up-and-down motion will be given to the rod D,
which must consequently work the pump rod B which is attached to it.
Figure 2 shews another application of a similar column of water, the
rod T, T, of the double piston being on the down stroke, and similar letters
being used to denote similar parts in both these Figures, no further description
will be required; and it is only necessary further to state that, as fast as the
water and air in the lower air chamber O of the water column G is allowed.
to escape, its place will be supplied from the chamber next above it, and the
chamber next above it from the chamber next above that, and so on to the
upper chamber K, which will receive its fresh supplies of water from the tank
or reservoir H, and of air from the top of the water colunin or tube G, which
is open to the atmosphere at all times.
Now whereas the application of a mere high column of water to work a
plunger cylinder and rod, such as those here represented, with tappets and
tumbler bobs acting upon a double piston, as here shewn, is not new, and I do
not claim the same as any part of my said Invention. But whereas I claim
as my Invention the application of the air jackets or chambers K, L, M, N,
and O, to a column of water, as aforesaid, and applying the power obtained
by the pressure of the said column of water through the medium of the com-
pressed air contained in the said air jackets or chambers, whereby I drive so
great a quantity of air into the cylinder E with the water as to effect a great
saving of water, which in most cases of requiring a reservoir at a high level is
very important. And such my Invention being, to the best of my knowledge
and belief, entirely new, and never before used within that part of Her said
Majesty's United Kingdom of Great Britain and Ireland called England, Her
said Dominion of Wales, or Town of Berwick-upon-Tweed, nor in any of Her
said Majesty's Colonies or Plantations abroad, I do hereby declare this to be
my Specification of the same, and that I do verily believe this my said Speci-
fication doth comply in all respects, fully and without reserve or disguise, with

page_text: the proviso in the said herein-before in part recited Letters Patent contained,
wherefore I hereby claim to maintain exclusive right and privilege to my said
Invention.
In witness whereof, I, the said George Davey, have hereunto set my
hand and seal, this Thirtieth day of May, One thousand eight hun-
dred and forty.
GEORGE NICHOLS,
Clerk to Messrs. Walmsley, Keightley, & Parkin, Sol",
43, Chancery Lane, London.
AND BE IT REMEMBERED, that on the First day of June, in the year
of our Lord 1840, the aforesaid George Davey came before our said Lady
the Queen in Her Chancery, and acknowledged the Specification aforesaid,
and all and every thing therein contained and specified, in form above
written. And also the Specification aforesaid was stamped according to the
tenor of the Statute made for that purpose.
Turolled the First day of June in the year of our Lord One thousand