IMPROVEMENTS IN EJECTOR-CONDENSERS, AND IN EXHAUSTING LIQUIDS AND FLUIDS FROM CONDENSERS AND OTHER CHAMBERS."
Year: 1869

page_text: LETTERS PATENT to Andrew Barclay, of Kilmarnock, in the County
of Ayr, North Britain, for the Invention of "IMPROVEMENTS IN
EJECTOR-CONDENSERS, AND IN EXHAUSTING LIQUIDS AND FLUIDS FROM
CONDENSERS AND OTHER CHAMBERS."
PROVISIONAL SPECIFICATION left by the said Andrew Barclay at the
...Oflice of the Commissioners of Patents, with his Petition, on the
2nd February 1869.
I; ANDREW BARCLAY, of Kilmarnock, in the County of Ayr, North
Britain, do hereby declare the nature of the said Invention of "IйPROVE-
MENTS IN EJECTOR-CONDENSERS, AND IN EXHAUSTING LIQUIDS. AND FLUIDS FROM
CONDENSERS AND OTHER CHAMBERS," to be as follows, that is to say:-
The first part of this Invention relates to an improvement upon some
of the instruments for condensing steam (known as ejector-condensers)
for which Letters Patent were granted to Andrew Barclay on or about
the 11th day of April 1868, and numbered 1216. The instruments now
[Price Gd.]

page_text: referred to are those shown on Sheet 1 of the Drawings appended to
the Specification of the Letters Patent herein-before referred to.
The improvement under this head of the Invention consists in leading
a steam pipe, supplied with steam from a boiler, down through the
centre of the nozzles of the ejectors or condensers or ejector-condensers,
under which various names these instruments are known. By means of
this pipe
a small supply of steam can be carried through the instru-
ment at such times as may be required to ensure its operation.
The second part of this Invention relates to the application of an
ordinary ejector for the purpose of withdrawing the water and air from a
steam engine condenser in place of using an air pump for effecting these
operations. The ejector is applied by attaching its suction pipe to the
bottom of the condenser, whilst the blow through pipe is attached to the
top of the condenser. When steam is admitted through the ejector
from a boiler or generator or other source the water will be drawn out
of the condenser by the pipe attached to the bottom of that vessel,
whilst the air is drawn out by the pipe attached to the top of the con-
denser, and in this manner a vacuum is formed therein. The same
arrangement may also be adopted for withdrawing liquids and fluids
generally from other chambers.
SPECIFICATION filed in pursuance of the conditions of the Letters
Patent, and of an Order of the Lord Chancellor, by the said Andrew
Barclay in the Great Seal Patent Office on the 1st September 1869.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ANDREW
BARCLAY, of Kilmarnock, in the County of Ayr, North Britain, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Second day of February, in the
year of our Lord One thousand eight hundred and sixty-nine, in the
thirty-second year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said Andrew Barclay, Her special
license that I, the said Andrew Barclay, my executors, administrators,
and assigns, or such others as I, the said Andrew Barclay, my executors,
administrators, or assigns, should at any time agree with, and no

page_text: 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
EJECTOR-CONDENSERS, AND IN EXHAUSTING LIQUIDS AND FLUIDS FROM CON-
DENSERS AND OTHER CHAMBERS," upon the condition (amongst others) that
I, the said Andrew Barclay, by an instrument in writing under my
hand and seal, should particularly describe and ascertain the nature
of the said Invention, and in what manner the same was
to be per-
formied, and cause the same to be filed in the Great Seal Patent Office
within seven calendar months next and immediately after the date of the
said Letters Patent.
NOW KNOW YE, that 1, the said Andrew Barclay, do hereby declare
the nature of my said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the
following statement, reference being had to the accompanying Drawings
and to the letters and figures marked thereon, that is to say:-
The first part of this Invention relates to an improvement upon some
of the instruments for condensing steam (known as ejector-condensers)
for which Letters Patent were granted to Andrew Barclay on or about
the Eleventh day of April One thousand eight hundred and sixty-eight,
and numbered 1216. The instruments now referred to are those shown
on Sheet 1 of the Drawings appended to the Specification of the Letters
Patent herein-before referred to
The improvements under this head of the Invention consist in leading
a steam pipe supplied with steam from a boiler down through the
centre of the nozzles of the ejectors or condensers or ejector-condensers,
under which various names these instruments are known. By means of
this pipe a small supply of steam can be carried through the instrument
at such times as may be required to ensure its operation.
The second part of this Invention relates to the application of an
ordinary ejector for the purpose of withdrawing the water and air from a
steam engine condenser in place of using an air pump for effecting these
operations. The ejector is applied by attaching its suction pipe to the
bottom of the condenser, whilst the blow through pipe is attached to the
top of the condenser. When steam is admitted through the ejector from
a boiler or generator or other source the water will be drawn out of the
condenser by the pipe attached to the bottom of that vessel, whilst the

page_text: air is drawn out by the pipe attached to the top of the condenser, and in
this manner a vacuum is formed therein. The same arrangement may
also be adopted for withdrawing liquids and fluids generally from other
chambers.
And in order that my said Invention may be completely understood, I
now proceed more particularly to set forth the manner of carrying the
same into practical effect, reference being had to the Figures upon the two
explanatory Sheets of Drawings which I have hereunto appended, that is
to say, by means of the two Figures on Sheet 1, and by Figure 1, Sheet 2,
the first part of my present Invention is illustrated, and the second part
by Figure 2, Sheet 2.
Figure 1, Sheet 1, is a vertical section of an ejector-condenser similar
to Figure 1, Sheet 1, of the Drawings appended to the Specification of
Letters Patent granted to me, and bearing date the Eleventh day of
April One thousand eight hundred and sixty-eight, numbered 1216, and
Figure 2, Sheet 1, of the Drawings hereunto appended is also a vertical
section of another arrangement of ejector-condenser, similar to Figure 2
on the same Sheet of Drawings herein-before referred to, that is to say,
that the said Drawings correspond excepting in so far that in Sheet 1 of
the Drawings hereunto appended the steam pipe passing down through
the nozzles of the apparatus of which the first part of my present
Invention consists is added.
In Figure 1 the steam pipe alluded to is marked a, and in this Figure
it is shown with its extremity drawn up or slightly above the extremity
of the nozzle E, but as the central pipe a, which communicates with the
boiler by the branch 2, is provided with a regulating screw y at the upper
end the position of the extremity of the pipe a relatively with the steam
nozzle E or combining nozzle F can be varied as required, it being
explained that when in action the extremity of the pipe a projects
through, that is, beyond the extremity of the nozzle E and into the
nozzle F, or beyond that nozzle if desired. At Figure 2, Sheet 1, the ejector
or ejector-condenser is shown in operation, and the pipe which com-
municates to the boiler by the branch z is therefore lowered by means of
the screw y into a working position; in this case it is shown as pro-
jecting into the combining nozzle F. The branch z is provided with a
stop-cock, not shown in the Drawings, by which the steam from the
boiler can be shut off and admitted as required.

page_text: The same improvement may also be advantageously employed with
those ejectors or ejector-condensers which have not a receiving chamber
for the steam nor a vacuum chamber beyond the nozzle, as shown in
both Figures in Sheet 1 of my Drawings, and without which chambers
the apparatus corresponds to that shown at Figure 6 of the Drawings
attached to the Specification of Letters Patent granted to me in the year
One thousand eight hundred and sixty-four, Number 1151, and to
illustrate my present improvement so applied I have hereunto appended
the Drawing Figure 1, Sheet 2, which corresponds to Figure 6, in the
Sheet of Drawings of the Specification of Letters Patent, Number 1151,
One thousand eight hundred and sixty-four, herein-before referred to,
and in which the central or additional steam pipe a passing through the
nozzles is shown; this pipe being provided with an adjusting screw (not
shown in the Drawings) at the upper end and placed in connection withi
a steam boiler, as at 2, Figures 1 and 2, Sheet 1, or by a flexible joint
or in any other convenient manner, being also provided with a stop-
cock by means of which steam can be allowed to pass through it or not as
required. It being further explained that in this as in the two preceding
Figures 1 and 2, Sheet 1, the central steam pipe may project when the
apparatus is in operation either through, that is, beyond the first nozzle a
into the nozzle b, or through, that is, beyond the nozzle 6 into the
nozzle c, or beyond the nozzle c and into the receiving nozzle or
throat d.
The second part of my improvements are illustrated at Figure 2, Sheet 2,
namely, the application of an ejector in substitution for an air for
pump
drawing off the injection water, water of condensation, and the air
from an ordinary condenser. In this Figure the condenser is marked A,
B the exhaust pipe from the engine cylinder or cylinders, and C the
injection pipe. The ejector is marked D, the water passage E of which
is connected to the lower part of the condenser A by the branch F, and
the overflow chamber G is connected to the upper part or air space of
the condenser by the pipe H. Sufficient steam to put the ejector D
into operation is admitted into the apparatus by the branch I; when
therefore the apparatus is in action the injection water passing in
through C and lodging in the condenser A is withdrawn through the
passage E, and the air and uncondensed vapour from the upper part of
the condenser are withdrawn by the rushing action of the water jet at a
through the pipe or passage H. In this manner the injection water,

page_text: water of condensation, uncondensed vapour, and air are all ejected through
the discharge throat O.
Having now described the nature of my said Invention, and the
system, mode, or manner in or under which the same is or may be used
or practically carried into effect, I wish to observe in conclusion that
what I consider novel and original, and therefore claim as the Invention
secured to me by the herein-before in part recited Letters Patent is,--
First, The employment of a central pipe passing down through the
centre of the nozzles of ejectors or condensers or ejector-condensers,
substantially as herein-before described and shown at a, Figures 1 and 2,
Sheet 1, and Figure 1, Sheet 2, of the Drawings hereunto appended.
Second. The application of an ejector in substitution of an air pump
for withdrawing the water, air, and uncondensed vapour from steam-
engine condensers or other chambers, as herein-before described and
shown at Figure 2, Sheet 2, of the Drawings hereunto appended.
In witness whereof, I, the said Andrew Barclay, have hereunto set
my hand and seal, this Twenty-eighth day of August One thousand
eight hundred and sixty-nine.
ANDREW BARCLAY. (L..s.)