IMPROVEMENTS IN LENA SAD CREAM UNA DE UN COMPOSITION OF GAS
Year: 1872

page_text: LETTERS PATENT to James Henry Mills, of College Street, in the
City of London, Engineer, for the Invention of "IMPROVEMENTS IN
LENA SAD CREAM UNA DE UN COMPOSITION OF GAS"
PROVISIONAL SPECIFICATION left by the said James Henry Mills at
the Office of the Commissioners of Patents, with his Petition, on
the 8th April 1872.
·
I, JAMES HENRY MILLS, of College Street, in the City of London,
Engineer, do hereby declare the nature of the said Invention for "Im-'
PROVEMENTS IN APPARATUS FOR GENERATING HEAT BY THE COMBUSTION OF GAS,"
to be as follows (that is to say) :—
This Invention relates to means of supplying atmospheric air to gas
in combustion in such manner and proportion as will tend to perfect
the combustion of the gas, thereby greatly intensifying or increasing
the heat generated by the combustion of any given quantity thereof,
and the following is a simple method of carrying my Invention "into"
effect.

page_text: Over the nozzle of the burner to be used, and which may be provided
with any description or size of aperture required, I fix or attach a hollow
conc with its apex directed upwards, such cone: being so placed that its
bottom periphery will be considerably below the level of the aperture of
the burner through which the gas issues into the interior of the conc,
the apex of which may be expanded or shaped into any suitable or
required form of burner. The gas issuing from the first-described burner
into the interior of the cone will ascend and pass out of the aperture
provided for it in the apex thereof, where it will be ignited, and in its
passage will draw the atmosphere in at the bottom of the cone, in the
interior of which they will unite, and together pass out at the top for
combustion.
The passage through which the atmosphere is admitted
is so proportioned in relation to the size of the aperture for the exit of
the gas as to limit the supply of air to such proportion as will give
most beneficial results.
Another method by which I accomplish the same object is as follows:
-I construct a hollow bar of any desired sectional form, and with a
horizontal partition traversing its entire length so as to form therein two
chambers, one above or over the other, the atmosphere being admitted
into the lower of the said chambers, and the gas to be burnt into the
upper thereof. Into this bar I insert burners of the following construc-
tion: Into the upper plate or surface of the said bar, and communicating
with the upper of the said chambers into which the gas is admitted, I
screw a hollow burner provided at the top with any suitable aperture,
and from the interior of this burner a small tube passes down through
the upper into communication with the lower chamber into which the
air is admitted so as to allow the said air to pass up into the interior of
the burner, where the gas and it mix, and pass out together at the top
for combustion. The quantity of air admitted may be regulated by a
cock at the end of the said bar, and when desired may be increased by
forcing it in by a fan or other suitable contrivance, or steam may be
admitted either alone or in conjunction with air.,
V
It will be obvious that any number of either description of burner
herein described may be placed side by side so as to form together a
heating surface of any required area, and in such combination will form
and may be used as cooking stoves or for various heating purposes, and
on a larger scale and combined with the proper settings may even be
used as furnaces for steam boilers.

page_text: And here I would observe that either kind of burner herein described
may be used alone or in conjunction with the other, in which latter
case the pipes or hollow bars in which the burners are fixed are
placed side by side, or may even be formed together, so that either
description of burner, or both together, may be used as occasion may
require.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said James Henry Mills in the Great Seal Patent
Office on the 8th October 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JAMES
HENRY MILLS, of College Street, in the City of London, Engineer, send
greeting.
no
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Eighth day of April, in the year of our
Lord One thousand cight hundred and seventy-two, in the thirty-fifth
year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto me, the said James Henry Mills, Her special license that
I, the said James Henry Mills, my executors, administrators, and
assigns, or such others as I, the said James Henry Mills, my executors,
administrators, and assigns, should at any time agree with, and
others, from time to time and at all times thereafter during the term
therein expressed, should and lawfully might make, use, exercise, and
vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN
APPARATUS FOR GENERATING HEAT BY THE COMBUSTION OF GAS," upon the
condition (amongst others) that I, the said James Henry Mills, my
executors or administrators, by an instrument in writing under my, or
their, or one of their hands and seals, should particularly describe and
ascertain the nature of the said Invention, and in what manner the
same was to be performed, and cause the same to be filed in the Great
Scal Patent Office within six calendar months next and immediately
after the date of the said Letters Patent.
NOW KNOW YE, that I, the said James Henry Mills, do hereby
declare the nature of the said Invention, and in what manner the same
:

page_text: is to be performed, to be particularly described and ascertained in and
by the following statement thereof, that is to say :-
This Invention relates to improvements in apparatus for gencrating
heat by the combustion of gas.
And in order that my Invention may be clearly understood and readily
carried into effect I will proceed to describe the same with the aid of the
accompanying Drawings, reference being had to the letters and figures
marked thereon, and in which Figure 1 is a plan of a gas stove or
furnace constructed according to my Invention; Figure 2 a front
elevation of same on an enlarged scale; Figure 3 a section taken on the
líne A, B, Figure 2; and Figures 4 and 5 sections taken respectively on
the lines C, D, E, F, Figure 1.
.
Figure 6 is a plan of a similar stove or furnace, but designed specially
for a circular or vertical boiler. In each case the same letter wherever
it occurs indicates the same or corresponding parts.
:
I construct a tube or hollow bar (G) by preference of rectangular
form, and divide the same into three compartments (G¹, G³, G³,) each of
which is also by preference rectangular, thus forming three hollow tubes
in one, although when desired they may be constructed separately and
placed or used together in the positions and manner shewn, and may be
of any other sectional form found convenient, but I prefer the arrange-
ment herein set forth. These tubes (G) are for the purpose of supplying
gas and air or steam to suitable burners, as more fully herein-after
described, and are placed side by side in a suitable frame (H) for the
purpose of making up the required heating surface, and are themselves
supplied in their said several compartments (G', G, G³,) by feed pipes
(I, I, I). Into the largest (G¹) of the said compartments or tubes I
screw burners (J) of the description illustrated and shewn full size, and
in section at Figure 4, and which are as follows:-Into the top of the
said tube (G¹) I screw a nipple (J) provided at its upper end with any
description and size of aperture, and having around it certain slots (K).
Over this nipple I screw a hollow cone (L) with its apex directed
upwards, and so placed that its bottom periphery will be considerably
below the level of the aperture of the said nipple (J) through which the
gas issues into the upper part of the said cone, which is expanded or
formed as shewn. The gas passing up the said nipple (J) into the
upper part of the burner for combustion draws the air in at the said
slots (K), and mixing with it they pass on together for combustion. It

page_text: :
will be seen that by raising or lowering the said cone on the said nipple
by screwing it up or down, the size of the slots or openings (K) for the
passage of the air may be increased or diminished, and thus the amount
of air admitted be regulated at pleasure. Into the two smaller (G², G³),
of the said tubes I fix burners of the description illustrated and shewn
full size and in section at Figure 5, and which are as follows:- Into the
top plate of and communicating with the upper tube (G2) into which
the gas to be consumed is admitted I screw a burner (M), provided at
its 'upper end with any suitable aperture for the exit of the gas to be
consumed, and from the interior of this burner (M) a small tube (N)
passes down through the upper into communication with the lower
tube (G), into which air or steam, superheated or otherwise, is admitted
or forced at any required pressure, whence it passes up the said tube (N)
into the interior of the said burner (M), where the gas and it-mix and
pass out together at the top for combustion..
t
,,
It will be seen from the Drawings that the whole of the tubes (G') are
supplied with gas by means of the pipe I', that the tubes G² are supplied
with gas by means of the pipe I³, and that the tubes G³ are supplied
with air or steam as required by means of the pipe I³, the supply in each
case being regulated by cocks O¹, 0³, 0³.
It will also be seen that the burners J may be used independently of
the burners M, or the latter independently of the former, or both com-
bined, as circumstances or occasion may render desirable.
Stoves or furnaces may also be constructed with either description of
burner alone, but are more effective when combined and more adapted
for getting up steam, for which purpose those herein described are
specially applicable, and although adapted for various purposes such as
for cooking, warming, &c., are specially designed for use in conjunction
with a steam boiler, for which Letters Patent were granted to me on the
8th April 1872, No. 1039.
Having therefore thus particularly described and ascertained the nature
of this my said Invention, and the manner in which the same is to or
may be performed, I would observe in conclusion that I do not confine
myself to the precise details herein set forth, as the same may be modified
in various ways without departing from the principle or main features
of my said Invention; but what I claim as my Invention and desire to

page_text: secure by the herein-before in part recited Letters Patent is, improve-
ments in apparatus for generating heat by the combustion of gas
substantially as and for the purpose or purposes herein-before set forth
and described.
In witness wherof, I, the said James Henry Mills, have hereunto
set my hand and seal, this Eighth day of October, in the year
of our Lord One thousand eight hundred and seventy-two.
Witness,
John W¼. Gray, C.E.,
Patent Agent,
23, Billiter Street, E.C.
JA³. HY. MILLS. (L.S.)