MENTS IN EVAPORATING AND DISTILLING WATER AND OTHER FLUIDS
Year: 1840

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
DAVID POOLE, of Holborn, in the County of Middlesex, Practical Chemist,
send greeting.
WHEREAS in consequence of a communication made to me by a certain
Foreigner residing abroad, I am in possession of an Invention of "IMPROVE-
MENTS IN EVAPORATING AND DISTILLING WATER AND OTHER FLUIDS;" and 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 July, in the fourth year of Her reign, did, for Herself, Her
heirs and successors, give and grant unto me, the said John David Poole, Her
especial licence that I, the said John David Poole, my exors, adñors, and
assigns, or such others as I, the said John David Poole, my exors, adiñors, 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, the said Invention; in which said Letters Patent is
contained a proviso obliging me, the said John David Poole, by an instrument
in writing under my hand and seal, particularly to describe and ascertain the
nature of the said Invention, and in what manner the same is to be performed,
and to cause the same to be enrolled in Her said Majesty's High Court of
Chancery within six calendar months next and immediately after the date of
the said in part recited Letters Patent, as in and by the same, reference being
thereunto had, will more fully and at large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
John David Poole, do hereby declare the nature of the said Invention to con-
sist in an apparatus whereby I do away with the use of any separate boiler for

page_text: heating the fluid to be evaporated or distilled, but make the boilers required
for that purpose actual evaporating or distilling vessels for the liquid to be
evaporated or distilled, and use no other fluid in any part of the said appa-
ratus; and whereby also I am enabled to heat the fluid to be evaporated or
distilled previously to being pumped into the said boilers, and thus expend the
heat generated for the purposes of the apparatus. And in further compliance
with the said proviso, I, the said John David Poole, do hereby describe the
manner in which tho said Invention is to be performed, by the following state-
ment thereof, reference being had to the Drawing annexed, and to the figures
and letters marked thereon, similar letters being used to denote similar parts
wherever they occur in all the Figures.
DESCRIPTION OF THE DRAWING.
In Figure 1, A represents a close cylindrical shaped, horizontally placed,
iron boiler, filled about three parts full with the fluid intended to be evaporated
or distilled. B is another close cylindrical shaped, horizontally placed, iron
boiler; C, a third; and D, a fourth; to which may be added any number
that will expend the heat generated in A usefully, with reference to the
object to be attained. These boilers A, B, C, and D, are all filled with
the fluid intended to be evaporated or distilled, to a convenient depth. The
steam generated in A passes from A through the pipe a, into the worm
marked b, b, b, in the next boiler B, through the fluid intended to be evaporated
or distilled in boiler B. When this worm emerges from B, which it does at c,
(as shewn at Figure 2,) it is introduced into a box d, wherein is a float valve c,
which communicates with worm m. By means of this valve the steam in the
worm marked b, b, b, in the boiler B, is condensed at an elevated temperature,
so as to cause the fluid to be evaporated or distilled which is in B to boil; and
the steam thus generated from the fluid in B passes from B through the
pipe E into a similar worm marked f, f,f, in the boiler C, and produces a
similar effect on the fluid to be evaporated or distilled in C, to that produced
by the steam from A on the fluid to be evaporated or distilled in B; and when
the worm emerges from C, it is introduced into another box 9, wherein is a
similar float valve, as before described. And this operation is to be repeated
and carried on through the pipe N into the worm h, h, h, in D, and thence
just so far as it may be convenient to add boilers, pipes, worms, boxes, and
cisterns X, until the heat is too far expended to further serve the purpose
required. F is a force pump to draw the fluid to be evaporated or distilled
from the cisterns X, by means of the pipe Y, and to force it into any of the
boilers at pleasure by means of the pipe Z, and its several stop-cocks marked W.

page_text: The parts marked G are cocks for drawing off the distilled fluid from the
cisterns X; those marked H are fluid guages, and those marked I safety.
valves. The parts marked J are discharge cocks, for emptying the boilers;
and the parts marked K are the manholes. The whole apparatus is here
shewn set in brickwork, L being the furnace door of the boiler A, which furnace
generates all the heat required for the apparatus. The distilled fluid when it
issues from the worms in B, C, and D, is of an elevated temperature. This
distilled fluid I pass, by means of worms m, through cisterns marked X, filled
also with the fluid intended to be evaporated or distilled, and which fluid by
this means is in a heated state when forced by means of the force pump F
into the boilers A, B, C, and D, whereby a great economy of fuel is effected.
Figure 2 is a longitudinal section of one of the boilers B, C, D, and its box d,
and cistern X; and Figure 3 is a plan of the apparatus represented in elevation
at Figure 1.
Now whereas I claim as the said Invention the apparatus herein-before
described, whereby the following improvements are obtained; that is to say,
no fluid but the fluid to be evaporated or distilled is used in any of the
boilers, boxes, or cisterns of the apparatus; while by means of the boxes,
cisterns, and worms in the said cisterns, the evaporated or distilled fluid is
always expending its heat in heating the fluid about to be subjected to the
operations previous to its being pumped into the boilers for that purpose.
And such 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, I do hereby declare this to be my
Specification of the same, and that I do verily believe this my said Specification
doth comply in all respects, fully and without reserve or disguise, with the
proviso in the said herein-before in part recited Letters Patent contained;
wherefore I do hereby claim to maintain exclusive right and privilege to the
said Invention.
In witness whereof, I, the said John David Poole, have hereunto set my
hand and seal, this Twenty-fourth day of December, One thousand
eight hundred and forty.
JOHN DAVID (L.S.) POOLE.
Signed, scaled, and delivered by the
within-named John David Poole, in
the presence of

page_text: AND BE IT REMEMBERED, that on the Twenty-fourth day of December,
in the year of our Lord 1840, the aforesaid John David Poole 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.
Inrolled the Twenty-fourth day of December, in the year of our Lord
One thousand eight hundred and forty.