Improvements in Injectors.
Year: 1893

page_text: Date of Application, 6th Feb., 1893
Complete Specification Left, 30th Oct., 1893-Accepted, 2nd Dec., 1893
PROVISIONAL SPECIFICATION.
[Communicated from abroad by THE SHERWOOD MANUFACTURING COMPANY,
of Buffalo, in the County of Erie and State of New York, United States of
America.]
Improvements in Injectors.
1, HENRY HARRIS LAKE, of the Firm of Haseltine Lake & Co., Patent Agents,
45 Southampton Buildings, in the County of Middlesex, do hereby declare the
nature of this invention to be as follows:-
This invention relates to that class of injectors in which the water valve is moved
simultaneously with the steam valve. The objects of my invention are to provide
more satisfactory means for operating the water valve from the steam valve, and to
provide means whereby the waste of water incident to starting the injector is
reduced.
My improved injector comprises a shell, a steam chamber provided with a steam
inlet pipe a screw plug for closing the front end of the steam chamber, a water
chamber formed behind the steam chamber a steam nozzle projecting from the
steam chamber into the water chamber, a water inlet pipe which communicates with
the water chamber by a passage formed in a diaphragm which latter separates the
water inlet pipe from the water chamber.
The vacuum chamber is connected to the water chamber by a suction tube
leading from the water chamber to the vacuum chamber and arranged in line with
the steam nozzle.
A combining tube and also a delivery tube, are arranged in the rear of the
suction tube, and overflow openings in the said combining tube communicate with
the overflow chamber and the overflow passage and overflow valve.
The steam valve is arranged in the steam chamber and adapted to close against
a seat formed in the front end of the steam nozzle, whereby the supply of steam to
the nozzle is controlled. This valve is formed on the inner end of a screw threaded
stem which latter is arranged longitudinally with reference to the casing and passes
through the screw plug. The stem is provided at its outer end with a handle for
turning it when it is desired to move the steam valve toward or from its seat.
The water inlet valve is arranged in the water chamber and adapted to close
against a valve seat formed in the diaphragm around the front end of the water
passage which connects the water inlet pipe with the water chamber. The water
valve is provided on its rear end with a cylindrical plug which obstructs the passage
when the water valve is closed. When the water valve bears against its seat, the
supply of water to the water chamber is shut off. The water valve is secured to
the inner end of a valve rod or stem which is arranged parallel with the stem of the
steam valve and slides lengthwise through a screw plug closing the lower front
portion of the water chamber.
A yoke is provided whereby the rod of the water valve is connected with the
stem of the steam valve. This yoke is provided with a lower sleeve which is
secured to the outer end of the valve rod and an upper sleeve which embraces the
stem of the steam valve. This stem is capable of turning in the upper sleeve, but
the latter is held against lengthwise movement on the stem by the handle bearing
against the outer end of the upper sleeve and a shoulder formed on the stem and
bearing against the inner and the upper sleeve. By this means the turning of the
handle causes the steam and water valves to simultaneously recede from or approach
their respective seats.
During the initial opening movement of both valves only steam is admitted to the

page_text: nozzle, because the flow of the water into the water chamber is obstructed by the
plug which is still arranged in the passage. When the steam valve has been opened
sufficiently to admit a full supply of steam, the plug of the water valve is wholly
removed from the water passage which permits of an unobstructed flow of water to
the water chambers. If water were admitted to the water chamber at the same
time that the steam valve is opened, the steam pressure would be insufficient to
force the water into the boiler and the water would be discharged through the
overflow until the steam valve was opened far enough to obtain the amount of
pressure necessary to carry the water to the boiler. By connecting the water
valve with the steam valve so that they move together, and constructing the water
valve so that the passage controlled by it remains obstructed during the initial
position of the opening movement-of-the-steam valve, the-latter is opened to the
proper extent for forcing the water into the boiler before water is admitted into the
water chamber, thereby reducing the waste water attending the starting of
the injector.
•
Instead of arranging the plug or extension of the water valve on that side of the
valve which is turned toward the water inlet pipe, a cylindrical extension may be
arranged on that side of the valve which is turned toward the water chamber, which
extension moves in an extension of the water passage made of such length that the
extension of the valve does not clear the extension of the passage until the steam
valve has been sufficiently opened.
Dated this 6th day of February 1893
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Injectors.
I, HENRY HARRIS LAKE, of the Firm of Haseltine Lake & Co., Patent
Agents, 45 Southampton Buildings, in the County of Middlesex, do hereby declare
the nature of this invention, and in what manner the same is to be performed, to
be particularly described and ascertained, in and by the following statement :-
This invention relates to that class of injectors in which the water valve is
moved simultaneously with the steam valve. The objects of my invention are to
provide more satisfactory means for operating the water valve from the steam
valve, and to provide means whereby the waste of water incident to starting the
injector is reduced.
In the accompanying drawing,
Figure 1 is a longitudinal sectional elevation of an injector provided with my
improvements.
Figures 2 and 3 are vertical transverse sections on lines 2-2 and 3-3,
Figure 1, respectively.
Figures 4 and 5 are fragmentary longitudinal sections showing different positions
of the steam and water valves.
Figure 6 is a fragmentary longitudinal section showing a slightly modified
construction of the water valve.
Like letters of reference refer to like parts in the several figures.
A represents the shell of the injector; B the steam chamber provided with a
steam inlet pipe b, and b¹ a screw plug closing the front end of the steam chamber.
C represents the water chamber formed behind the steam chamber and c the
steam nozzle projecting from the steam chamber into the water chamber.
D represents the water inlet pipe which communicates with the water chamber by
a passage d formed in a diaphragm d' which latter separates the water inlet pipe
from the water chamber.
E represents the vacuum chamber, and e the suction tube leading from the

page_text: ater chamber to the vacuum chamber and arranged in
ozzle.
Time WIGIL
SUCALLE
F represents the combining tube and G the delivery tube, both arranged in
ear of the suction tube, and g represents the overflow openings communicating with
he overflow chamber f. H represents the overflow passage and the overflow
valve.
I represents the steam valve arranged in the steam chamber and adapted to
close against a seat i formed in the front end of the steam nozzle, whereby the
supply of steam to the nozzle is controlled. This valve is formed on the inner
end of a screw threaded stem j which latter is arranged longitudinally with
reference to the casing and passes through the screw plug The stem is
provided at its outer end with a handle j¹ for turning it when it is desired to move
the steam valve toward or from its seat.
K represents the water inlet valve arranged in the water chamber and adapted
to close against a valve seat / formed in the diaphragm d¹ around the front end of
the passage d, which connects the water inlet pipe with the water chamber. The
water valve is provided on its rear end with a cylindrical plug m which obstructs
the passage d when the water valve is closed. When the water valve bears against
its seat, as represented in Figure 1, the supply of water to the water chamber is
shut off. In the position of the water valve represented in Figure 4, the water
valve is opened, but its plug is still arranged in the passage d, whereby the flow of
water is obstructed. As represented in Figure 5, the water valve and its plug are
wholly removed from the seat and passage, which permits of a full supply of
water to the water chamber. The water valve is secured to the inner end of a
valve rod or stem n which is arranged parallel with the stem of the steam valve
and slides lengthwise through a screw plug n¹ closing the lower front portion of
the water chamber.
p
o represents a yoke whereby the rod of the water valve is connected with the
which is
stem of the steam valve. This yoke is provided with a lower sleeve
secured to the outer end of the valve rod and an upper sleeve p' which embraces
the stem of the steam valve. This stem is capable of turning in the upper
sleeve pl, but the latter is held against lengthwise movement on the stem by the
handle bearing against the outer end of the upper sleeve and a shoulder g
formed on the stem and bearing against the inner end and the upper sleeve. By
this means the turning of the handle causes the steam and water valves to simul-
taneously recede from or approach their respective seats.
In the position of the parts représented in Figure 1, the steam and water valves
are both closed. Upon turning the handle in the proper direction, both the steam
and water valves recede from their seats. During the initial opening movement
of both valves only steam is admitted to the nozzle, because the flow of the water
into the water chamber is obstructed by the plug which is still arranged in the
When the steam valve has been opened
passage d, as represented in Figure 4.
sufficiently to admit a full supply of steam, the plug of the water valve is wholly
removed from the water passage, as represented in Figure 5, permitting an
5 unobstructed flow of water to the water chamber. If water were admitted to the
water chamber at the same time that the steam valve is opened, the steam pressure
would be insufficient to force the water into the boiler and the wafer would be
discharged through the overflow until the steam valve was opened far enough to
obtain the amount of pressure necessary to carry the water to the boiler. By
0 connecting the water valve with the steam valve so that they move together and
constructing the water valve so that the passage controlled by it remains obstructed
during the initial portion of the opening movement of the steam valve, the latter
is opened to the proper extent for forcing the water into the boiler before water
is admitted into the water chamber, thereby reducing the waste water attending
55 the starting of the injector.
Instead of arranging the plug or extension m of the water valve on that side of
the valve which is turned toward the water inlet pipe, a cylindrical extension m¹

page_text: may be arranged on that side of the valve which is turned toward the water
chamber, which extension moves in an extension m² of the water passage made of
such length that the extension m¹ of the valve does not clear the extension m² of
the passage until the steam valve has been sufficiently opened. This construction
is represented in Figure 6.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, as communicated to me
by my foreign correspondents, I declare that what I claim is :-
1. The combination with the steam nozzle, the steam valve provided with a
screw threaded stem capable of rotative and longitudinal movement, the water
chamber, the water inlet pipe and the diaphragm arranged between the water inlet
pipe and the water chamber and provided with a water passage, of a water
inlet valve adapted to close said passage and provided with a stem capable of
longitudinal movement, and a yoke secured to the stem of the water valve and
provided with a sleeve in which the stem of the steam valve turns and which is
held against longitudinal movement on said stem, substantially as set forth.
2. The combination with the steam nozzle, the steam valve and the water
chamber provided with a water inlet passage, of a water inlet valve provided with
an extension which obstructs the water passage during the initial portion of the
opening movement of the water valve, and connecting mechanism whereby both
valves are operated simultaneously, substantially as set forth.
3. The combination with the steam nozzle, and the steam valve, of a water
chamber provided with a water inlet passage, a water valve provided with a
cylindrical plug projecting into said passage, and connecting mechanism whereby
both valves are operated simultaneously, substantially as set forth.
Dated this 30th day of October 1892
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.