IMPROVEMENTS IN CON- DENSERS FOR STEAM PUMPING ENGINES
Year: 1874

page_text: LETTERS PATENT to Frederick Ebenezer Saxby, of Liverpool, in the
County of Lancaster, for the Invention of "IMPROVEMENTS IN CON-
DENSERS FOR STEAM PUMPING ENGINES."
Scaled the 5th March 1875, and dated tho 24th December 1874.
PROVISIONAL SPECIFICATION left by the said Frederick Ebenezer
Saxby at the Office of the Commissioners of Patents, with his
Petition, on the 24th December 1874.
I, FREDERICK EBENEZER SAXBY, of Liverpool, in the County of
Lancaster, do hereby declare the nature of the said Invention for
“ IMPROVEMENTS IN CONDENSERS FOR STEAM PUMPING ENGINES,” to be as
follows:-
=
:
My Invention relates to improvements in that class of condensers
generally used for steam pumping engines where a vacuum is created by
the intermingling and condensing of the exhaust steam with and by
the suction or inlet water of the pump during its passage through such
condenser.

page_text: ▲ condenser for steam pumping engines constructed according to my
Invention consists of a cylindrical or other suitably shaped vessel, having
at the top or near the top a suction or inlet pipe, boing a branch with
flange, and at the bottom or near the bottom thereof a branch with
flange to connect the condenser to the suction pipe or orifice of tho
pump. The top of the condenser is also provided with a branch and
flange to connect the condenser to the exhaust steam pipe of the engine.
The exhaust steam pipe is bolted or otherwise attached to the branch on
the top of the condenser, and discharges or exhausts into a pipo which
passes through the same brauch, and projects internally into the con-
denser. Round this internal pipe I fit a conical india-rubber valve, which
can be attached to the sides of the condenser by a flange or other pro-
vision provided for that purpose below the suction or inlet orifice. The
valve so fitted leaves a tapered space between the valve and the internal
pipo before mentioned leading from the exhaust steam pipe. The valvo
may be made of india-rubber sufficiently strong to grip the internal pipo
and causo a vacuum in the condenser when the pump is going. The
action, being the suction of the pump, causes a vacuum in the condenser
sufficiently strong to open tho india-rubber conical valve. The inlet
water is then drawn through the valve, and also the exhaust steam is
drawn through the internal pipe, the steam and water intermingling, tho
steam condenses and is drawn away with the inlet water to the pump.
The exhaust steam pipe is provided with a cock to exhaust into the
atmosphere or into the condenser, as is usual in such cases.

page_text: successors, give and grant unto me, the said Frederick Ebonezer Saxby,
Her special licence that I, the said Frederick Ebenezer Saxby, my
executors, administrators, and assigns, or such others as I, the said
Frederick Ebenezer Saxby, 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 CONDENSERS FOR STEAM PUMPING
ENGINES," upon the condition (amongst others) that I, the said Frederick
Ebenezer Saxby, my exccutors or administrators, by an instrument in
writing under my, or their, or one of their hands and scals, 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 I, the said Frederick Ebenezer Saxby, do
hereby declare the nature of my said Invention, and in what manner
the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:-
My Invention relates to improvements in that class of condensers
generally used for steam pumping engines where a vacuum is created by
the intermingling and condensing of the exhaust steam with and by
the suction or inlet water of the pump during its passage through such
condenser.
A condenser for steam pumping engines constructed according to my
Invention consists of a cylindrical or other suitably shaped vessol, having
at the top or near the top a suction or inlet pipe, being a branch with
flange, and at the bottom or near the bottom thereof a branch with
flange to connect the condenser to the suction pipe or orifice of the
pump. The top of the condenser is also provided with a branch and
flange to connect the condenser to the exhaust steam pipe of the engine.
The exhaust steam pipe is bolted or otherwise attached to the branch on
the top of the condenser, and discharges or exhausts into a pipe which
passes through the same branch, and projects internally into the con-
denser. Round this internal 'pipe I fit a conical india-rubber valve,
which can be attached to a flange or other provision provided for that
purpose below the suction or inlet orifice. The valve so fitted leaves a

page_text: tapered space between the valve and the internal pipe before mentioned
leading from the exhaust steam pipe. The valve may be made of india-
rubber sufficiently strong to grip the internal pipe and cause a vacuum
in the condenser when the pump is going. The action, being the
suction of the pump, causes a vacuum in the condenser sufficiently
strong to open the india-rubber conical valve. The inlet water is then
drawn through the valve, and also the exhaust steam is drawn through
the internal pipe, the steam and water intermingling, the steam condenses
and is drawn away with the inlet water to the pump. The exhaust steam
pipe is provided with a cock to exhaust into the atmosphere, or into the
condenser, as is usual in such cases.
The before-going being the nature, object, and purposes of this my
Invention, I will now proceed to describe more in detail how the same
may be carried out into practical effect, and for that purpose I have
hereunto attached a Sheet of Drawings marked with letters and figures
of reference corresponding with those in the following explanation. Like
letters and figures marked on the Drawings are used to denote similar
parts. The Drawings are shown half size:-
Figure 1 represents a sectional clevation of a condenser; Figuro 2, a
plan shown half in section through the line a, b, Figure 1.
Upon reference it will be seen that A is the body or main chamber of
the condenser; B, the upper chamber of the condenser; C, the water
suction or inlet pipe to the condenser; D is the exhaust steam inlet pipe
from the cylinder of the steam pump; E is the suction pipe of the pump
connecting the pump to the condenser; F is an internal pipe or nozzlo
leading from the steam inlet D into the main body of the condenser A ;
I is a spindlo for regulating the pipo F, the spindle being worked by
the wheel I; K is a conical india-rubber valve which passes round the
pipe E, leaving a space P for the inlet water to pass, as shown by the
arrows S.
The conical india-rubber valve K is attached by bolts or
otherwise to the flange forming the under part of the upper chamber B
of the condenser.
f
In action the pump forms a vacuum in the condenser A, and the
water is drawn through the pipe C, the upper chamber B of the con-
denser, and the passage P, and discharges in a straight column, as shown
by the arrows W. The water draws the exhaust steam with it, and
condenses it, and thus forms a vacuum on the exhaust side of the piston

page_text: of the engine. The flow of water and operation of the condenser can be
regulated by the wheel I, which adjusts tho internal pipe F as required.
The pipe D is fitted with a suitable cock for exhausting the steam from
the steam pump into the air or into the condenser as required, and as
usual in such cases.
Having now fully described and ascertained the nature, object, and
purposes of this my Invention, and shown how the same may be carried
out into practical effect, I would have it understood that I do not confinc
myself to the particular size, arrangement, and dimensions as shown in
the Drawings, as the same can be considerably varied without departing
from my Invention, as will be readily understood, but what I claim as
my Invention and secured to me by Letters Patent as aforesaid is,―
Firstly. The improvements in condensers for steam pumping engines,
substantially as described in the before-going Specification and shown.in
the accompanying Drawings.
Secondly. In a condenser the india-rubber valve or pipe K leading
from an upper chamber B of the condenser and communicating with the
water suction or inlet pipe, and in combination with the internal nozzlo
pipe F leading from the exhaust steam pipe of the steam engine, sub-
stantially in the manner and for the purposes set forth and shown in the
before-going Specification and Drawings.
In witness whereof, I, the said Frederick Ebenezer Saxby, have
hereunto set my hand and seal, this Twenty-first day of June,
in the year of our Lord One thousand eight hundred and seventy-
five.