IMPROVEMENTS IN STEAM ENGINES
Year: 1872

page_text: LETTERS PATENT to Jesse Newsome, Mechanical Engineer, and
Joseph Overend, Wool and Waste Dealer, both of Bradford, in the
County of York, for the Invention of "IMPROVEMENTS IN STEAM
ENGINES."
Sealed the 28th March 1873, and dated the 30th September 1872.
PROVISIONAL SPECIFICATION left by the said Jesse Newsome and
Joseph Overend at the Office of the Commissioners of Patents, with
their Petition, on the 30th September 1872.
We, JESSE NEWSOME, Mechanical Engineer, and JOSEPH OVEREND,
Wool and Waste Dealer, both of Bradford, in the County of York, do
hereby declare the nature of the said Invention for "IMPROVEMENTS IN
STEAM ENGINES," to be as follows :→
This Invention relates to the construction and working of steam.
engines so as to render the minimum quantity of steam available, and
so economize fuel.
In constructing steam engines according to this Invention we employ
triplicate cylinders, one worked by the steam at high pressure, the
remaining two cylinders being worked at low pressure by the exhaust.
steam from the first cylinder. The port ways lead or admit steam to the
bottom of the cylinders only, the cylinders' tops being open so as to.

page_text: admit of atmospheric pressure on the upper surface of the piston (a con-
denser and an air pump being employed in connection with the low
pressure cylinders).
The working of the engine is as follows:-The steam at high pressure
is admitted to the first cylinder, thence received by an exhaust vessel or {
receiver, and from thence at the reduced pressure is passed by pipe or
pipes to the other cylinders, into which it is admitted alternately, so as
to be acting upon one piston whilst the other is being depressed by the
action of the condenser. An air pump is used in connection with the two
last-mentioned cylinders in the usual manner.
1
We prefer to use, as above described, the three cylinders, but in
applying the Invention to existing engines having two cylinders we dis-
pense with the high-pressure cylinder and employ the two condensing
cylinders, as above described.
SPECIFICATION in pursuance of the conditions of the Letters Patent, 1
filed by the said Jesse Newsome and Joseph Overend in the Great
Seal Patent Office on the 28th March 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, JESSE
NEWSOME, Mechanical Engineer, and JOSEPH OVEREND, Wool and
Waste Dealer, both of Bradford, in the County of York, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Thirtieth day of September, 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 us, the said Jesse Newsome and Joseph Overend, Her 2
special licence that we, the said Jesse Newsome and Joseph Overend,
our executors, administrators, and assigns, or such others as we, the said
Jesse Newsome and Joseph Overend, 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 3
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 STEAM ENGINES,'
upon the
condition (amongst others) that wo, the said Jesse Newsome and
"

page_text: Joseph Overend, our executors or administrators, 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 within six calendar months
next and immediately after the date of the said Letters Patent.
NOW. KNOW YE, that we, the said Jesse Newsome and Joseph
Overend, 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, that is to
say :- -
This Invention relates to the construction and working of steam
engines so as to render the minimum quantity of steam available, and
so economize fuel.
In constructing steam engines according to this Invention we employ
triplicate cylinders, one worked by the steam at high pressure, the
remaining two cylinders being worked low pressure by the exhaust
steam from the first cylinders. The port ways lead or admit steam to the
bottom of the cylinders only, the tops of the cylinders being open so
as to admit of atmospheric pressure on the upper surface of the piston, a
condenser and an air pump being employed in connection with the low-
pressure cylinders.
The working of the engine is as follows:-The steam at high pressure
is admitted to the first cylinder, thence received by an exhaust vessel or
receiver, and from thence at the reduced pressure is passed by pipe or
pipes to the other cylinders, into which it is admitted alternately, so as
to be acting upon one piston whilst the other is being depressed by the
action of the condenser and pressure of the atmosphere. An air pump
is used in connection with the two last-mentioned cylinders in the usual
manner.
We prefer to use, as above described the three cylinders, but in
applying the Invention to existing engines having two cylinders we dis-
pense with the high-pressure. cylinder and employ the two condensing
cylinders, as above described.
Such being the nature of our said Invention we will now proceed to
fully describe the same, and in order that the nature and particulars of
the Invention may be fully understood.

page_text: In the construction of engines built specially to be worked according
to the principle of this Invention, we employ three cylinders, one of
which (by preference the centre cylinder) we supply and work by high-
pressure steam, the remaining two cylinders being worked at low
pressure by the exhaust steam from the first cylinder. The three pistons
are connected by suitable cranks to the crank shaft, on which shaft
are the eccentrics for working the valve gear, which is of the ordinary
construction, only that steam is admitted to the bottom only of the low-
pressure cylinders, these two cylinders being, as described, open at the
top, and a condenser and air pump working in connection with the said
low-pressure cylinders.
The working of the engine is as follows:-The steam at high pressure
is admitted to the first cylinder, then received by an exhaust vessel or
receiver, and from thence at the reduced pressure is passed by pipe or
pipes to the other cylinders, into which it is alternately admitted, so as 1
to be acting upon one piston whilst the other is being depressed by the
action of the condenser and the pressure of the atmosphere, an air
pump being employed in connection with the low-pressure cylinders as
usual.
When applying the Invention to existing engines we do not employ 2
the high-pressure cylinder above described, but arrange the valves and
valve gear to admit the steam as above described, and employing the
condensers and air pump, as above fully explained.
In witness whereof, I, the said Joseph Overend, for and on behalf of
myself and the said Jesse Newsome, have hercunto set my hand 2
and seal, this Twenty-seventh day of March, in the year of our
Lord One thousand eight hundred and seventy-three.