AN IMPROVEMENT IN THE CONSTRUCTION OF BOILERS FOR STEAM ENGINES AND OTHER PURPOSES WHERE STEAM IS REQUIRED
Year: 1823

page_text: FISHER & HORTON'S SPECIFICATION.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, JOHN
FISHER, of Great Bridge, in the Parish of Westbromwich, in the County of
Stafford, Iron Founder, and JOSHUA HORTON the younger, of the same place,
Manufacturer of Steam Boilers, send greeting.
WHEREAS His most Excellent Majesty King George the Fourth, by His
Letters Patent under the Great Seal of Great Britain, bearing date at
Westminster, the Eighth day of July, in the fourth year of His reign, did, for
Himself, His heirs and successors, give and grant unto us, the said John
Fisher and Joshua Horton, our exñors, adñiors, and assigns, His especial licence,
full power, sole privilege and authority, that we, the said John Fisher and
Joshua Horton, our exors, adñiors, and assigns, or such others as we, the said
John Fisher and Joshua Horton, our exors, adiiors, 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 within all His Majesty's Colonies and Plantations abroad, our Invention
"AN IMPROVEMENT IN THE CONSTRUCTION OF BOILERS FOR STEAM ENGINES AND
OTHER PURPOSES WHERE STEAM IS REQUIRED;" in which said Letters Patent there
is contained a proviso obliging us, the said John Fisher and Joshua Horton,
or one of us, by an instrument in writing under our hands and seals, or under
the hand and seal of one of us, particularly to describe and ascertain the nature
of our said Invention, and in what manner the same is to be performed, and
of

page_text: to cause the same to be enrolled in His Majesty's High Court of Chancery
within two 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.
NOW KNOW YE, that in compliance with the said proviso, we, the said
John Fisher and Joshua Horton, do hereby declare that our said Invention
of "An Improvement in the Construction of Boilers for Steam Engines, and
other Purposes where Steam is required," are particularly described and ascer-
tained in and by the Drawings hereunto annexed, and the following description
thereof (that is to say.):-
Our said Invention consists in the placing of one or more-vessel-or-vessels,
either wholly or in part, within the water of the boiler, to receive from the boiler,
by means of a pipe or pipes. or other aperture or apertures communicating there-
with, the steam or a part of the steam arising from the water in the boiler, from
which vessel or vessels such steam is to be conducted or applied to the engine or
purpose required. The vessel or vessels to receive the steam, as before stated,
is or are to be so proportioned and fixed or placed as to leave a sufficiency of
room or space in the boiler to contain the water necessary to produce the
steam required, and that the water in the boiler may either wholly or in part
surround or apply to such vessel or vessels. In the Drawing annexed,
Figure 1 represents the section of a boiler with the vessel for receiving the
steam. Figure 2 is the end view of such boiler and steam vessel. A, A, A, A,
Figures 1 and 2, is the boiler; B, B, B, the steam vessel; C, C, C, C, the water
in the boiler, surrounding, or nearly surrounding, the steam vessel; D, D, the
part of the boiler to receive the steam as it rises from the water, whence it
passes into the steam vessel B, B, B, through the pipe E, E; F is a cock for
the purpose of letting out any water which may get into the steam vessel;
K is an occasional opening for emptying and cleansing the boiler; L, L, L, in
Figure 1, and L in Figure 2, aro man-holes or man-ways; M, M, in Figure 1,
represents the pipe to convey the steam to the engine, or other purpose
required; N, the safety valve, and O, O, the feeding pipe. The boiler, and
also the vessel or vessels for receiving the steam, may be made of iron, copper,
or other suitable metal or material, and manufactured in the way steam
toilers are usually made, and will readily admit of being made of various other
shapes or forms, and of being heated either by a fire applied externally to the
boiler, by its being placed in brickwork with flues, or by placing both fire and
flues judiciously in the cavity or space between the boiler and the steam vessel
or vessels, always taking care that such flues are properly surrounded with
water.

page_text: And our improved boiler may be used either for the generating of what is
commonly called low-pressure or high-pressure steam, taking care, however,
to select such shapes, forms, dimensions, and strength of materials as may be
suited for the intended purposes to which such boilers are to be applied.
We do not mean or intend hereby to claim as our Invention any of the
parts of this apparatus already known or in use; but we do hereby claim as our
Invention the introduction of the interior vessel or vessels to be supplied with
steam from the boiler, and to be surrounded wholly or in part by the water
contained in the boiler.
In witness whereof, we, the said John Fisher and Joshua Horton, have
hereunto set our hands and seals, this Sixth day of September, in the
year of our Lord One thousand eight hundred and twenty-three.
5
MARCAL DE gundred and twenty-three.
JOHN (L.B.) FISHER.
JOSHUA (LB.) HORTON, Jun'.
AND BE IT REMEMBERED, that on the Sixth day of September, in
the year of our Lord 1828, the aforesaid John Fisher and Joshua Horton came
before our said Lord the King in His Chancery, and acknowledged the Speci-
fication aforesaid, and all and every thing therein contained and specified, in
form above written. And also the Specification aforesaid was stampt
according to the tenor of the Statute made for that purpose.
Inrolled the Sixth day of September, in the year of our Lord One
thousand eight hundred and twenty-three.