IMPROVED MEANS AND APPARATUS FOR UBTAINING MOTIVE POWER AND ECONOMIZING FUEL.
Year: 1874

page_text: LETTERS PATENT to George Johnson, of Wheatley, near Halifax, in
the County of York, and James Shaw, of Brighouse, in the said
County, Cotton, Spinners, for the Invention of " IMPROVED MEANS AND
APPARATUS FOR UBTAINING MOTIVE POWER AND ECONOMIZING FUEL.
PROVISIONAL SPECIFICATION left by the said George Johnson and
James Shaw at the Office of the Commissioners of Patents, with
their Petition, on the 7th March 1874.
We, GEORGE JOHNSON, of Wheatley, near Halifax, in the County of
York, and JAMES SHAW, of Brighouse, in the said County, Cotton
Spinners, do hereby declare the nature of the said Invention for
"IMPROVED MEANS AND APPARATUS FOR OBTAINING MOTIVE POWER AND ECONO-
MIZING FUEL," to be as follows:-
This Invention has for its object the construction and employment
of apparatus for raising steam and for utilizing the gasses arising from
the combustion of fuel; so as to economize fuel.

page_text: We employ by preference upright boilers enclosed by brickwork built
concentric therewith, such boilers having two, three, or more water spaces
connected by means of circulating pipes, the upper portion of the boiler
forming a water and the steam space; the heated gases, after circulating
through and around the lower water spaces pass through a central flue
in the upper water and steam space, from whence they pass to a con-
denser tank containing water, upon the surface of which the said heated
gases are discharged, heating the surface water contained in this vessel.
This tank contains also two vessels to act as condensers for condensing
the steam from the engine; these consist of concentric cylinders forming
a steam-tight compartment, having entrance and exit pipes at the top
and bottom. The exhaust steam is admitted to the condenser through the
entrance pipe placed near the top of the condenser, and the exit pipe
near the bottom of the condenser is provided with a valve and air pump
through which the condensed water is carried off.
A syphon or syphon pipes is or are employed for carrying off a portion
of the surface water from the condenser, so as to admit of the intro-
duction of more water to the bottom of the tank, maintaining one
uniform level within the condenser, such heated surface water being for
the feed of the boiler or othe purpose. A compound engine would be
employed in connection with the above apparatus, the steam from the
smaller or high pressure cylinder will be discharged along with the
heated gases upon the surface water contained in the condenser tank,
and exhausted therefrom by means of the vacuum formed in the con-
denser cylinders, an air pump and valve being employed in connection
with the condensers, as above described.
TO ALL TO WHOM THESE PRESENTS SHALL COME, WC, GEORGE
JOHNSON, of Wheatley, near Halifax, in the County of York, and JAMES
SHAW, of Brighouse, in the said County, Cotton Spinners, send.
grcoting.

page_text: WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Seventh day of March, in the year of
our Lord One thousand eight hundred and seventy-four, in the thirty-
seventh year of Her reign, did, for Herself, Her heirs and successors,
5 give and grant unto us, the said George Johnson and James Shaw,
Her special licence that we, the said George Johnson and James Shaw,
our executors, administrators, and assigns, or such others as we, the said
George Johnson and James Shaw, our 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, excrcise, and vend, within the United
Kingdom of Great Britain and Ireland, the Channel Islands, and Isle
of Man, an Invention for "IMPROVED MEANS AND APPARATUS FOR OBTAINING
MOTIVE POWER AND ECONOMIZING FUEL," upon the condition (amongst others)
6 that we, the said George Johnson and James Shaw, our executors or ad-,
ministrators, by an instrument in writing under our, 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 Patent
Office on or before the Thirtieth day of September 1874.
.
NOW KNOW YE, that we, the said George Johnson and James Shaw,
do hereby declare the nature of our said Invention, and in what
manner the same is to be performed, to be particularly described and
ascertained in and by the following statement and accompanying Sheets
of Drawings, that is to say:-
? This Invention has for its object the construction and employment of
apparatus for condensing the exhaust steam from steam engines, so as
to economize fucl.
We employ a tank which contains one or more vessels to act as.
condensers for condensing the steam from the engine. These consist of.
concentric cylinders, forming a steam-tight compartment having
entrance and exit pipes at the top and bottom; the exhaust steam is
admitted to the condenser through the entrance pipe placed near the.
top of the condenser, and the exit pipe near the bottom of the condenser
is provided with a valve and air pump, through which the condensed
water is carried off.

page_text: of the water from the condenser cylinder, so as to admit of the intro-
duction of more water to the bottom of the tank, maintaining one uniform
level within the condenser cistern, such heated surface water being
for the feed of the boiler or other purpose. A compound engine would
be employed in connection with the above apparatus.
In order that this Invention may be more clearly understood we have
hereunto annexed two Sheets of Drawings illustrative of the same, and
have marked them with figures and letters of reference, the same letter
referring to the same part in the various views or Figures.
Fig. 1 is an elevation of a compound engine with our improvements
attached thereto; Fig. 2 is a plan view of same.
Steam exhausted by the small cylinder A is conveyed into the large
cylinder B, and gives motion to the working parts thereof, the exhaust
steam being discharged through the two pipes C and D into the con-.
denser D', which is placed in a tank E, water being conveyed into the
tank by any suitable means; F is an exit pipe, communicating by
pipes F, F, with the bottom of the condenser, and through which the
condensed water is by means of an air pump G conveyed into a receiver
or vessel H and returned again into the tank through the pipe J; J¹ is
a pipe for conveying water into the pipe F for the purpose of completing
the condensation should it be required before passing into the air pump;
K is a syphon pipe for carrying off the water from the tank when such
has got above the desired level; L is a pipe for conveying the heated
surface water to feed the boiler or other purpose.
It will have been noticed by the practical observer that we are
cnabled by our arrangement of condenser to have a larger amount of
cooling surface than has hitherto been obtained, and at the same time.
I have the water on the surface of the cistern or tank E in a heated state
whilst the water at the bottom is cool, and thus obtain a greater vacuum
than by the processes heretofore employed. In carrying out this In-
vention we prefer to use compound engines, running the smaller or
high-pressure piston three strokes to the low pressure one.
Having thus described the nature of this our said Invention, and
shewn by Drawings in what manner the same is to be performed, we
would have it understood that we do not confine ourselves to the precise
details herein set forth, but what we claim as our Invention is means
:

page_text: and apparatus for condensing exhaust steam, substantially as shewn and
described.
In witness whereof, we, the said George Johnson and James Shaw,
have hereunto set our hands and seals, this Fifth day of
September, in the year of our Lord One thousand eight hundred
and seventy-four.
Witness,
W*. TASKER,
Patent Agent,
Halifax & Bradford.
GEORGE JOHNSON. (L.S.)
JAMES SHAW.
(L.S.)