CERTAIN IMPROVEMENTS IN STEAM BOILERS OR GENERATORS
Year: 1851

page_text: H
SPECI
UN.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN HICK,
of Bolton le Moors, in the County of Lancaster, Engineer, 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 Seventeenth July, One thousand eight hundred and fifty-one,
in the fifteenth year of Her reign, and in the year of our Lord One thousand
eight hundred and fifty-one, did, for Herself, Her heirs, and successors, give
and grant unto me, the said John Hick, Her especial license, full power, sole
privilege and authority, that I, the said John Hick, my exors, adiñors, and
assigns, and such others as I, the said John Hick, my exors, adññiors, and
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, and Wales, and the
Town of Berwick upon Tweed, my Invention of "CERTAIN IMPROVEMENTS IN
STEAM BOILERS OR GENERATORS;" in which said Letters Patent is contained a
proviso that 1, the said John Hick, shall cause a particular description of the
nature of my said Invention, and in what manner the same is to be performed,
to be enrolled in Her 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 Hick, do hereby declare that the nature of the said Invention, and the
manner in which the same is to be performed, is particularly described and

page_text: ascertained in and by the Drawings hereto annexed and the following explana-
tion thereof, that is to say:
My Invention applies to steam boilers or generators as employed either for
stationary or marine purposes, and consists in the employment or use of two
separate and distinct boilers or portions of boilers and in their arrangement, so
that one end of each of the said boilers forms a side or portion of a side of a
chamber, with which the internal flues and tubes of such boilers communicate,
and which chamber. I designate, a gas chamber, the remaining sides of such
gas chamber being formed of or lined with brick or other material having slow
powers of conducting heat, and which can therefore be raised to a much higher
degree of temperature than if such chamber were formed by the metal plates
of the boilers having their inner surfaces in immediate contact with the water
in such boilers. The first boiler is of the ordinary cylindrical construction,
having an internal flue or flues (containing the fire bars or grate) communi-
cating with the said gas chamber. The second, boiler is also cylindrical (of the
description commonly called multitubular, and similar to the boiler of an
ordinary locomotive steam engine,) containing many small pipes or tubes,
which communicate from the said gas chamber to the ordinary external flues
and chimney. The object of this arrangement is to effect a more perfect com-
bustion of the gases and smoke evolved from the fuel employed in the fire
grate of the first boiler, and by means of such more perfect combustion in the
gas chamber to generate and communicate to the second boiler a more intense
heat than could be obtained and communicated from such smoke and gases if
conveyed through such second boiler with such more perfect combustion
having been previously effected. It will be evident that the two boilers or
portions of boilers may be placed in different positions with regard to each
other; that is, they may be placed at right angles to each other, or side by
side, or one above the other, provided they are connected together by a
chamber of brickwork or other non-conducting material, but the position which
I prefer is in a right line with each other and on the same plan as represented
in the accompanying Drawing, of which the following is a description:-The
Drawing is made to represent a boiler of about fifty horses power, and is
drawn to a scale of about one inch to a foot, and has similar letters of reference
placed upon corresponding parts of the same in all the figures. Fig. 1 is a
longitudinal section of a steam or generator boiler constructed according to the
principles of my Invention; Fig. 2 is an end view of the same with the furnace
doors and fire bars removed; and Fig. 3' is a transverse section taken vertically
through the "
gas chamber." a, a, is a cylindrical boiler having internal flues,
b, b, containing the grates or fire bars c, c. d, d, is another boiler, also cylin-
.415

page_text: drical, but furnished with a number of small tubes e, e, e, e, similar to the boiler
of a locomotive engine, leading to the ordinary external flues f,f. g, g, is the
gas chamber" connecting the two boilers a and d together. It is formed of fire-
brick and is furnished with a man-way at h, in order to allow of convenient access
for inspection or for cleaning. i, i, is a feed pipe for supplying both boilers with
water; k, k, are safety valves; and 1, 1, is a pipe for the egress of the steam.
Having thus fully described the nature and objects of my said improvements,
together with the manner of carrying the same practically into effect, I would
remark, in conclusion, that I do not intend to confine myself to the particular
dimensions of the said boilers or portions of boilers, nor to the amount of space
left between them, nor to the peculiar position in which they may be placed
relatively to each other. As a matter of convenience also it may be useful in
some cases to connect the two boilers together by means of pipes passing
through or outside of the gas chamber, but their connection or disconnection
is not essential to my Invention, as the two boilers may (if so desired) be
connected with distinct engines and have no internal circulation of steam or
water with each other without departing from the spirit of my Invention; but
I do claim as my Invention the arrangement of two or more steam boilers of
generators with a gas chamber formed or lined and situated as herein-before
described, for effecting a more perfect combustion of the products of the fuel.
In witness whereof, I, the said John Hick, have hereunto set my hand
and seal, this Thirteenth day of January, in the year of our Lord One
thousand night hundred and fifty brun

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