IMPROVEMENTS IN THE PROAL
Year: 1875

page_text: LETTERS PATENT to James Jackson and Thomas Jackson, both of
the Springfield Ironworks, Newton Moor, Hyde, in the County of
Chester, Engineers, for the Invention of "IMPROVEMENTS IN THE
PROVISIONAL SPECIFICATION left by the said James Jackson and
-
.
Thomas Jackson at the Office of the Commissioners of Patents,
with their Petition, on the 11th November 1875.
We, JAMES JACKSON and THOMAS JACKSON, both of the Springfield
Ironworks, Newton Moor, Hyde, in the County of Chester, Engineers,
do hereby declare the nature of the said Invention for "IMPROVEMENTS
IN THE CONSTRUCTION OF INJECTORS, EJECTORS, AND EJECTOR CONDENSERS," to be
as follows: :-
Our improvements in the construction of injectors consist, first, in

page_text: the plug of which is fixed to the body of the injector; to this nozzle is
cast a projection through which a screw passes. The spindle is con-
nected to the plug above referred to. On starting the injector the
nozzle is lowered to open the valve to admit steam for drawing the
water. The steam thus admitted escapes in an annular film into the
combining cone, and thence into the overflow chamber and into
the receiving cone; this establishes a current of water from the water
reservoir. The steam nozzle is then lowered still more to increase the
steam opening and reduce the water opening, and when the overflow
ceases the full current of water is discharged into the boiler.
Our Invention may be modified by making the spindle hollow, and
making the upper part to fit accurately in the steam nozzle. The steam
passes into the centre of the spindle through lateral openings.
Our improvements in ejectors consist in the combination of two
steam nozzles, one of which fits within a second steam nozzle.
The 1
water or other fluid to be raised passes through the centre of the upper
nozzle and at the outside of both the nozzles; the steam by which the
current is induced passes through the first nozzle and around the outer
part of the second nozzle. This arrangement is suitable for low lifts.
For high lifts we employ a central steam nozzle as well as an outer 2
annular steam nozzle; also a combining cone with overflow valve and
receiving cone similar to those described in reference to the injector.
Our improvements in ejector condensers consist of an annular water
nozzle, and a central steam nozzle, and an annular steam passage. The
condensed steam, air, and water are discharged into a third conical a
nozzle, around which is a passage for uncondensed steam. The whole
apparatus is in communication with the discharge pipe.
.

page_text: Newton Moor, Hyde, in the County of Chester, Engineers, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Eleventh day of November, in the year
of our Lord One thousand eight hundred and seventy-five, in the
thirty-ninth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto us, the said James Jackson and Thomas
Jackson, Her special licence that we, the said James Jackson and
Thomas Jackson, our executors, administrators, and assigns, or such
others as we, the said James Jackson and Thomas Jackson, 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,
exercise, and vend, within the United Kingdom of Great Britain and
Ireland, the Channel Islands, and Isle of Man, an Invention for "IM-
PROVEMENTS IN THE CONSTRUCTION OF INJECTORS, EJECTORS, AND INJECTOR CON-
DENSERS," upon the condition (amongst others) that we, the said James
Jackson and Thomas Jackson, our executors or administrators, by an
instrument in writing under our, or their, or one of our or 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 James Jackson and Thomas
Jackson, 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) :-
Our improvements in the construction of injectors, consist in making
the upper end of the steam nozzle to form the seating of a valve, the
plug of which is fixed to the body of the injector.
Our improvements in the construction of ejectors consist in the com-
bination of two steam nozzles, one of which fits within a second steam
nozzle.
Our improvements in the construction of ejector condensers consist
of an annular water nozzle, a central steam nozzle, and a central steam
passage.

page_text: And in order that our Invention may be fully understood and readily
carried into operation we will proceed to describe the accompanying
Sheet of Drawings.
Fig. 1 is a vertical section, and Fig. 2 a plan in section of one of our
improved injectors. a is the outer casing, bolted together in two parts;
6 is the steam nozzle, the upper end of which forms the seating for the
valve c which is screwed into the upper part of the casing; to the
nozzle 6 is cast a projection through which the screw d passes; the solid
spindle e is cast or fixed to the valve c. On starting the injector the
nozzle 6 is lowered by turning the hand wheel on the screw d, or by
any other equivalent, to open the valve c to admit steam for drawing
the water; the steam thus admitted escapes in an annular film into the
combining cone f, and thence into the overflow chamber g, and into the
receiving cone h; this establishes a current of water from the water
reservoir. The steam nozzle is then lowered still more to increase the
steam opening and reduce the water opening, and when the overflow
ceases the full current of water is discharged into the boiler. By this
arrangement one handle serves to regulate the openings for the passage
of the steam and water according to the varying pressures.
Our Invention may be modified by making the spindle e hollow, as
shewn in Fig. 3, and making the upper part to fit accurately in the
steam nozzle b. The steam passes into the centre of the spindle through
the lateral openings e¹.
Fig. 4 represents a modification of our improved injector, particularly
adapted for locomotive engines or in other places where a head of water
is available. In this view a is the outer casing; b, the steam nozzle;
f, the combination cone; 9, the overflow chamber; and h, the receiving
cone. On starting this injector the steam is admitted to the nozzle bas
usual until the overflow ceases. The necessary adjustment for varying
pressures is made by regulating the opening of the steam and water
valves.
Fig. 5 represents an elevation, and Fig. 6 a plan of our improved
ejector suitable for low lifts. a is the outer casing; i, the lower steam
nozzle j, the upper steam nozzle; k, the water nozzle placed within
the upper steam nozzle j. The steam is admitted through the branch
pipes and m; the water or other fluid to be raised passes through the

page_text: nozzle in the centre of the upper nozzle j, and at the outside of both
the nozzles the steam by which the current is induced passes through
the first nozzle and around the outer part of the second nozzle.
For high lifts we employ the arrangement shewn in Fig. 7. In this
case the steam enters the central nozzle n to draw the water and then
through the branch pipe m to the outer nozzle j; the fluid to be raised
then enters the combining cone f which is provided with the overflow
chamber g and valve g³, and passes into the receiving cone h. These
parts are similar to those described in reference to the injector.
Our improvements in the construction of ejector condensers are
shewn in Figs. 8 and 9. In these views a is the outer casing; o is an
annular water nozzle; and p, the central steam nozzle, around which is
an annular steam passage. The condensed. steam, air, and water from
the cylinder are discharged into the third conical nozzle q, around which
is a passage for uncondensed steam; the whole apparatus is in com-
munication with the discharge pipe. On starting, fresh steam from the
boiler is admitted to the nozzler to establish a current of water through
the apparatus, and when the engine to which the apparatus is connected
is at work the exhaust steam becomes condensed by the water and
induces a current which is sufficiently strong to overcome the resistance
of the atmosphere, thereby keeping up the requisite partial vacuum in
the cylinder.
Having thus stated the nature and particulars of our Invention, we
declare that we claim,-
First. The general combination and arrangement of the parts forming
our improved injectors, whereby the turning of one handle regulates the
openings for steam and water to suit varying pressures, as shewn and
described in reference to Figs. 1, 2, 3, and 4, and particularly making
the upper end of the steam nozzle to form the seating of the steam
valve.
Secondly. The general combination and arrangement of the parts
forming our improved ejectors, as shewn and described in reference to
Figs. 5, 6, and 7, and particularly the use of two steam nozzles, one of
which fits within the other.
• 11

page_text: parts forming our improved ejector condenser, as shewn and described
in reference to Figs. 8 and 9.
In witness whereof, we, the said James Jackson and Thomas
Jackson, have hereto set our hands and seals, this Fourth day
of May, One thousand eight hundred and seventy-six.