METHOD OF CONSTRUCTING AND SETTING BOILERS OF ANY DIMENSION FOR THE USE OF FIRE ENGINES, SALT WORKS, BREWHOUSES, DISTILLERS, SOAP-HOUSES, SUGAR- HOUSES, AND SUGAR WORKS
Year: 1773

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CHRISTOPHER
CHRYSEL, of the Parish of Saint George, in the County of Gloucester,
Engineer, send greeting.
+
WHEREAS His most Excellent Majesty King George the Third hath been
graciously pleased, by His Letters Patent under the Great Seal of Great
Britain, bearing date the Seventh day of November, in the fourteenth year
of His said Majesty's reign; to give and grant: unto me, the said Christopher
Chrysel, my executors, administrators, and assigns, His special licence, full
power, sole privilege and authority, that I, the said Christopher Chrysel, my
executors, administrators, and assigns, and every of them, by myself or them-
selves, or by my or their deputy or deputies, servants or agents, or such others
as I, the said Christopher Chrysell, my executors, administrators, and assigns,
should at any time agree with, and no others, should and lawfully might, from
time to time and at all times hereafter during the term of years therein
expressed, make, use, exercise, and vend, within that part of Great Britain
called England, the Dominion of Wales, and Town of Berwick upon Tweed,
and also within the. Colonics and Plantations abroad, iny new invented
"METHOD OF CONSTRUCTING AND SETTING BOILERS OF ANY DIMENSION FOR THE USE
OF FIRE ENGINES, SALT WORKS, BREWHOUSES, DISTILLERS, SOAP-HOUSES, SUGAR-
HOUSES, AND SUGAR WORKS," in such manner as to me, my executors, adminis-
trators, and assigns, or any of them, should in their discretions seem meet;
and that I, the said Christopher Chrysel, my executors, administrators," and
assigns, should and lawfully might have and enjoy the whole profit, 'benefit,

page_text: cominodity, and advantage from time to time coming, growing, accruing, and
arising by reason of the said Invention, to have, hold, exercise, and enjoy the
said licence, powers, priviledges, and advantages therein granted unto me, the
said Christopher Chrysel, my executors, administrators, and assigns, for and
during and unto the full end and term of fourteen years from the date of the
said Letters Patent next and immediately ensuing, and fully to be compleat
and ended, according to the Statute in such case made and provided; and
whereas, in the said Letters Patent, there is contained a proviso that I, the
said Christopher Chrysel, should particularly describe and ascertain the nature
of my said Invention, and in what manner the same is performed, by an
instrument in writing under my hand and seal, and cause the same to be
inrolled in the High Court of Chancery within four calendar months next
after the date of the said Letters Patent, as in and by the said Letters Patent,
relation being thereunto had, will more fully and at large appear.
NOW KNOW YE, that in obedience to the said Letters Patent, and the
proviso therein contained, I, the said Christopher Crysel, do hereby declare
my said new invented method of constructing and setting boilers, is made
and performed in manner following (that is to say):-
The boilers, coppers, and pans, containing four or more feet deep of water
or liquors, are to be changed into shallow boilers of about one foot in depth
and of a convenient length and breadth, containing either. the same quantity
of water or liquors, or double or treble the quantity, which will make no
difference in the quantity of fuel required. But in the boilers of the fire
engines the depth of the shallow boilers must be about two feet and an half,
whereof half a foot is assigned to the depth of the water, and two feet for the
confinement of the steam. Thus changing the large deep boilers, coppers, and
pans into proportionable shallow boilers is the first part, and of very great
advantage, paving the way for the second part, which is properly the principal
cause, as it is the means of saving of one half part of the coals and fuel other-
wise burnt, and of a quicker dispatch of business in every respect, by a pecu-
liar method of setting the said shallow boilers upon a small furnace and
serpentine flue contrived in such manner that the fire goes out of the furnace
in full flames under the whole bottom of the shallow boiler for about a hundred
feet ascending to the top of the chimney. The furnace flue and chimney are
according to the smaller or larger dimensions of the shallow boilers in a
geometrical proportion one with the other; two regulators are also added, one
for regulating the access of the free air, and the other for regulating the exit
of the fire flames and smoak. The materials unto furnace flue and chimney
are good fire bricks, Stourbridge and Windsor loom; the whole may be fitted.

page_text: up and adjusted to any purpose, and different degrees of fire and fuel, such as
cominon pit coals, turf pits, faggots, split wood, and the like, may be used for
different intents and purposes. But when candle, coals, coaks, or charcoal are
the fuel used, there will be a great advantage by building a coal magazine con-
taining about a ton, more or less, whereby the fire will be constantly supplied
without assistance, and will last 24, 36, 48, or 60 hours, according to the given
degree of fire, without any addition of fuel during that time, so that the
workmen may sleep all night without fear of the fire going out, the boiler
growing cold, or the business stopping.
In witness whereof, I have hereunto set my hand and seal, the Eighth
day of March, in the fourteenth year of the reign of our Sovereign
Lord George the Third, by the grace of God of Great Britain, France,
and Ireland, King, Defender of the Faith, and so forth, and in the
year of our Lord One thousand seven hundred and seventy-four.
AND BE IT REMEMBERED, that on the Eighth day of March, in the
year of our Lord 1774, the aforesaid Christopher Chrysel came before our
said Lord the King in His Chancery, and acknowledged the Specification
aforesaid, and all and everything therein contained and specified, in form
above written. And also the Specification aforesaid was stampt according to
the tenor of the Statute made in the Sixth year of the reign of the late King
and Queen William and Mary of England, and so forth.
Irolled the Eighth day of March, in the year of our Lord One thousand
seven hundred and seventy four.