" PROVEMENTS IN OBTAINING MOTIVE POWER
Year: 1872

page_text: LETTERS PATENT to Alfred George Brookes, of 62, Chancery Lane,
London, in the County of Middlesex, for the Invention of "Im-
" PROVEMENTS IN OBTAINING MOTIVE POWER." -A communication from
abroad by. Giesbert Hoevelmann, of Barmen, Prussia.
PROVISIONAL SPECIFICATION left by the said Alfred George Brookes
at the Office of the Commissioners of Patents, with his Petition,
on the 6th December 1872.
I, ALFRED GEORGE BROOKES, of 62, Chancery Lane, London, in the
5 County of Middlesex, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN OBTAINING MOTIVE POWER," (the same being a com-
munication to me, from abroad by Giesbert Hoevelmann, of Barmen,
Prussia), be as follows:-
F
The improvements relate to the employment of the gaseous products
arising from the combustion of fuel combined with steam as a means of
obtaining motive power.

page_text: In carrying out the Invention the fuel used in heating the water to
generate the steam is burned in a chamber or chambers within the boiler,
combustion being sustained by the aid of compressed air first supplied
with the water to the boiler, and then the air and the water separate, the
air passing to the fuel and the water by another conduit to the
part of the boiler.
upper 5
The gas generated by the consumption of the fuel is forced through
the water, and mixed with the steam produced therefrom is used as a
motive power.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Alfred George Brookes in the Great Seal Patent
Office on the 6th June 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ALFRED
GEORGE BROOKES, of 62, Chancery Lane, London, in the County of
Middlesex, send greeting.
.....
13
.
'WHEREAS 'Her most Excellent Majesty Queen Victoria, by. Her
Letters Patent, bearing date the Sixth day of December, in the year
of our Lord One thousand eight hundred and seventy-two, in the thirty-
sixth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Alfred George Brookes, Her special license
that I, the said Alfred George Brookes, my executors, administrators,
and assigns, or such others as I, the said Alfred George Brookes, my
executors, administrators, and assigns, should at any time agree with,
and no 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
OBTAINING MOTIVE POWER," the same being a communication to me from
abroad by Giesbert Hoevelmann, of Barmen, Prussia, upon-the condition
(amongst others) that I, the said Alfred George Brookes, 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 Seal
71
.

page_text: First. Forcing Pump and Parts connected therewith.―a, pump chamber
for the liquid; b, the piston; c, piston rod; d' and a suction valves;
e¹ and e³ suction or inlet pipes for the liquid taken from from the upper
part of the apparatus. The liquid is pressed into the box shaped
receptacle through the delivery valves f¹ and f¹. The cover of this
receptacle is furnished with the projecting parts h³, h², h³, h*, each one
with a hole (Figure 4) to allow the liquid to escape from the receptacle
On the surface of the
g in proportion to the motion of the piston.
projecting parts h³, h³, h³, h³, revolves the sheave i containing the
chambers k¹, k³, k³, k, etc. On this sheave is a cover / serving as
receiver of air, and by means of several connecting pieces at point z is
screwed on the cover plate g in such a manner however as not to prevent
the revolving motion of the sheave i. The bottom of the cover l, as shewn
by Figure 1, is double cased so as to form two separate compart-
ments m' and m². In m¹ above the holes in h¹, h³, h³, h, there are
smaller openings n¹, n³, n³, n', (Figure 3) for the following purpose: —
While the sheave i is revolving its chambers fill one after the other with
the liquid introduced through the holes h¹, h³, h³, h*. The cross section
of the chambers in sheave and its rotative velocity are regulated in
proportion to the quantity of liquid supplied by every stroke of the
pump in such a manner as to allow the liquid to rise only as far as the
bottom of the cover 2, or only to let a small portion of the liquid enter
through the holes n', n³, n³, n', into the smaller receptacles, from where it
A small cock
is conducted through a small pipe p into the reservoir q.
either self-acting or not regulates the flowing off of the liquid. The
chambers k¹, k², etc., thus filled with the liquid upon removing from the
projecting parts h¹, h², h³, h*, empty into the trough or basin q, and fill
with air. The revolving motion of the sheave continuing one chamber
after another is successively cut off from the surrounding air below by
one of the projecting parts, and above by the cover, and the air con-
tained in the chambers when entering into communication with the
rising liquid through the holes in the projecting parts h³, h³, h³, h*, and
through one of the holes of cover with the air already condensed
therein, becomes rapidly condensed and pressed into the receiver, causing
thus in the manner already described the liquid upon every further rotation
of the sheave i to run from the chamber into the basin q. From here as
has been already stated the pump takes back the liquid through the
suction pipes e¹ and e³, thus causing a continual circulation of the
liquid. By the proper choice and convenient arrangement of an uneven

page_text: number of condensing chambers with an even number of the holes k',
h, h, h, a quick succession of condensation of the air is obtained so
much as to keep the tension of air in the receiver and in the pipes as.
constant as to render a special regulator superfluous.
It is still to be mentioned that the pump for feeding the boiler,, as
shewn in Figure 1, forces the water through opening r into the receiver 9,
from there it flows out at point 8 and at point into the above-
mentioned chamber m³ of the cover 1, thus cooling the working parts of
the apparatus while growing warm itself, until it enters the boiler at
point.
The way of working the pump depends upon local circumstances.
The steam engine represented in the Drawing is designed to serve the
working of the pump only. The engine is not connected with any other
machinery, and is furnished with a regulator, viz., revolving sheave,
neither of which I have described in particular, as the Invention as com-
municated to me applies only to the means of condensing the air and
not to the method in which the pump and sheave are worked.
(2). Boiler to Contain the Fuel, etc.—The circular chamber A contains.
the fuel, which is admitted through the aperture B in sufficient quantity
for a day's work, after which this opening is shut. In proportion to the
gradual combustion the fuel through a circular aperture C drops into
the fire-box D which is surrounded by the air chamber, and constructed
on the inner side with fire-bricks disposed in such a manner as to form a
ring provided with holes. F. The condensed air requisite for combustion
is from the above-described blowing apparatus introduced first at
point G into the chamber A, and then expelled at point H; from here
it enters at point F into a lower chamber forming a reservoir, from
which again it escapes at point K in order to be conducted at point L,
that is to say, by the part C to the fuel. The gases resulting from com-
bustion (heating gases), the ashes, the cinders all pass through the
openings F into the above-mentioned fireproof ring, cinders and ashes
drop into the bottom part of the boiler M, from which they are removed
after every day's work through the opening N. The gases resulting from
combustion (beating gases) rise to the chamber O, from which they are
let out through pipe P to evaporate the water.
(3). Boiler to Evaporate the Water, etc.-The Drawing represents firc-

page_text: separately. The water admitted at point B¹ is exposed to the influence
of the heating gases in the circular chamber X, the water flowing con-
tinually through the openings Y mingles with the heating gases' washing
and cooling them, and with them passes through the annular aperture S
into the evaporation chamber E. From there the vapours mingled with
the cooled gases are conveyed through the outlet pipes into the engine,
and in this manner they are employed as a motive power.
Having thus described the Invention as communicated to me, and the
means of carrying the same into effect, I would have it understood that
I do not wish to be limited to the precise details shewn and described,
as the same may be varied without departing from the peculiar character
of the Invention; but what I claim is,-
First. The adaptation or combination of means by which condensed
air may be applied in obtaining motive power, substantially as described.
Secondly. I claim the employing condensed air for combustion of fuel
in a fire-box hermetically closed, and the introduction into water of the
heated gases in order to obtain motive power by the combination of the
resulting vapours and gases; substantially as described.
In witness whereof, I, the said Alfred George Brookes, liave here-
unto set my hand and seal, this Fifth day of June, in the year
of our Lord One thousand eight hundred and seventy-three.
ALFRED GEORGE BROOKES. (L.S.)