Improvements in Injectors for Raising and Forcing Fluids and Feeding Steam Boilers.
Year: 1895

page_text: Date of Application, 15th Jan., 1895
Complete Specification Left. Eth Nov., 1895-Accepted, 14th Dec., 1895
PROVISIONAL SPECIFICATION.
Improvements in Injectors for Raising and Forcing Fluids and
Feeding Steam Boilers.
We, EDWARD DAVIES of Plâs Dinam Llandinam in the County of Montgomery,
Engineer, and JAMES METCALFE, of 32 North Parade, Aberystwith, in the
County of Cardigan Engineer, do hereby declare the nature of the said invention,
to be as follows:-
Our invention relates to improved constructions of injectors.
Firstly. Our improvements relate to that construction of injectors, in which the
combining and receiving and discharging cones are formed in one piece, and in
which the exterior parts of the combining and receiving and discharging cones are
cylindrical.
The exterior of the combining cone fits and can slide to and fro in the casing and
to and from the steam cone, so that the space for water can be adjusted, and the
exterior of the receiving and discharging cone fits and can slide in a part forming
the lower end of the discharging cone.
The combined combining and receiving and discharging cones are slided to and
fro to adjust the water by a toothed pinion which gears with rack teeth formed on
the exterior cylindrical part of the combining cone, the toothed pinion being on a
cross shaft in bearings in the casing of the injector, the shaft being rotated by an
indexed hand-wheel on the exterior of the casing. The ordinary overflow from
the combining cone is through a cross slot in the lower end of the combining cone
between it and the entrance to the receiving cone.
Our improvements applied to such injectors as are constructed and arranged as
above described consist in making a part of the combining cone so as to be hinged
to it either above or below, the latter by preference, so that when this hinged part
or "flap" is shut close the bore or passage of the combining cone is complete, but
when open it allows the free escape of fluids necessary to start an injector to make
it automatic or re-starting.
The hinged flap will have opened sufficiently for overflow when its exterior
comes against the interior bore in the casing for the exterior of the combining
cone. We also apply the improvements under this head to exhaust steam injectors.
Secondly. Our invention relates to an improved construction of injectors in
which the combining and receiving and discharging cones are formed in one piece
or in parts screwed together having a cross slot for overflow between the end of the
combining and beginning of the receiving and discharging cones.
Such combined nozzles or cones are prepared to screw into the end of an injector
casing leaving annular cavities in the casing between the exterior of the nozzles
and interior of the casing for overflow, and for delivery, and having packing so
that when screwed into the casing, fluids cannot pass between the steam and water
and overflow cavity, and between the delivery and overflow cavity formed in the
casing.
Our improvements in the above described construction and arrangement of
injectors, consist in forming a part of the combining cone near the point or small
end of the steam nozzle so as to slide to and fro in the axial line of the bore of the

page_text: combining cone to a limited extent, there being a cross slot in the combining part of
the cone for the escape of fluids to make the injector automatic or re-starting.
The sliding part moves into one position when the injector is starting and remains
in such position until the jet is fully established during which time the fluid escapes
but when the jet is established the sliding part takes up the other position, closing
the outlet for overflow of fluids.
Thirdly. Our improvements consist in combining the automatic re-starting valve
arrangement referred to under the second head of our invention, with the combined
combining and receiving and discharging cones having a toothed rack upon it,
gearing with and actuated by a pinion on a shaft and an indexed hand-wheel
thereon on the exterior of the casing referred to under the first head of our
invention, in place of the hinged flap referred to under that head of our
invention.
Fourthly. The combinations under the first, second and third heads above
referred to are or may be used with or without a steam cone spindle.
Fifthly. Our invention consists in combining and arranging either of the
combinations under heads one, two and three, so as to form what are commonly
termed "combination injectors" in which the parts of injectors are combined and
arranged together in one casing so as to receive steam and water by one passage
and deliver water by another passage in the same junction with the boiler-our
improved combination injectors being made with or without steam cone spindles,
aud with a valve for controlling the supply of water, which valve can be opened
or screwed down upon its seating with a quick threaded screw upon the spindle.
Sixthly. Our invention consists in combining and forming by our improvements
hereinbefore referred to under the first, second, third and fourth heads combined
injectors commonly termed "double injectors" in the same casing or separate
casings, that is to say, one injector receives steam and the water supply, and
delivers its combined steam and water to another set of nozzles or cones, which
receives steam forming the second injector, having a back pressure valve between
the two injectors. The second injector is provided with an automatic overflow
valve, either weighted by a spring or by a diaphragm acted upon by the pressure
of the fluid in the delivery pipe. In our improved double injectors, the axes of the
cones or nozzles of the first injector is in a line, or parallel with or at an angle to
the axes of the cones or nozzles forming the second injector receiving the discharged
water and steam from the first injector.
"
Seventhly. It is difficult for the drivers or firemen of locomotives to see or
ascertain when an injector is working "dry or without overflow, especially at
night and the discharge from the overflow from an injector is liable at times to
injure persons when the outlet is in the ordinary position. This part of our
invention refers to and consists in arrangements by which the overflow pipe from
the injector is brought to the front on the foot plate of the locomotive, and is made
to discharge into a funnel in full view and so as to be readily seen by the driver,
and is then conveyed from the funnel to be discharged downwards between the
rails. Or the overflow water from the injector is brought by a pipe to a position
where it will have to pass through a glass tube or box arranged so that its passage
can be seen when overflow is being discharged.
Or the overflow when existing is or may be made to enter a small cylinder and
act upon a piston or upon a vane or surface connected with an indicator, or other
arrangements may be used to carry out the object of this part of our invention.
Dated this 14th day of January 1895.

page_text: Improvements in Injectors for Raising and Forcing Fluids and
Feeding Steam Boilers.
We, EDWARD DAVIES of Plâs Dinam, Llandinam, in the County of Montgomery,
Engineer, and JAMES METCALFE, of 32 North Parade, Aberystwith, in the County
of Cardigan, Engineer, 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 :-
Our invention relates to improved constructions of injectors.
Firstly. Our improvements relate to that construction of injectors, in which the
combining and receiving and discharging cones are formed in one piece, and in
which the exterior parts of the combining and receiving and discharging cones
are cylindrical.
The exterior of the combining cone fits and can slide to and fro in the casing and
to and from the steam cone, so that the space for water can be adjusted, and the
exterior of the receiving and discharging cone fits and can slide in a part forming
the lower end of the discharging cone.
The combined combining and receiving and discharging cones are slided to and
fro to adjust the water by a toothed pinion which gears with rack teeth formed on
the exterior cylindrical part of the combining cone, the toothed pinion being on a
cross shaft in bearings in the casing of the injector, the shaft being rotated by an
indexed hand-wheel on the exterior of the casing.
The ordinary overflow from the combining cone is through a cross slot in
the lower end of the combining cone between it and the entrance to the receiving
cone.
Our improvements applied to such injectors as are constructed and arranged
as above described consist in making a part of the combining cone so as to be
hinged to it either above or below, the latter by preference, so that when this
hinged part or "flap" is shut close, the bure or passage of the combining cone is
complete, but when open, it allows the free escape of fluids necessary to start an
injector to make it automatic, or re-starting.
We
The hinged flap will have opened sufficiently for overflow when its exterior comes
against the interior bore in the casing for the exterior of the combining cone.
also apply the improvements under this head to exhaust steam injectors.
Secondly. Our invention relates to an improved construction of injectors in
which the combining and receiving and discharging cones are for.ned in one piece
or in parts screwed together having a cross slot for overflow between the end of
the combining and beginning of the receiving and discharging cones.
Such combined nozzles or cones are prepared to screw into the end of an
injector casing leaving annular cavities in the casing between the exterior of the
nozzles and interior of the casing for overflow, and for delivery, and having packing
so that when screwed into the casing, fluids cannot pass between the steam and
water and overflow cavity, and between the delivery and overflow cavity formed
in the casing.
Our improvements in the above described construction and arrangement of
injectors, consist in forming a part of the combining cone near the point or small
end of the steam nozzle so as to slide to and fro in the axial line of the bore of the
combining cone to a limited extent, there being a cross slot in the combining
part of the cone for the escape of fluids to make the injector automatic or
re-starting.
The sliding part moves into one position when the injector is starting and remains
in such position until the jet is fully established during which time the fluid escapes

page_text: but when the jet is established the sliding part takes up the other position, closing
the outlet for overflow of fluids.
Thirdly. Our improvements consist in combining the automatic re-starting valve
arrangement referred to under the second head of our invention, with the combined
combining and receiving and discharging cones having a toothed rack upon it,
gearing with and actuated by a pinion on a shaft and an indexed hand wheel
thereon on the exterior of the casing referred to under the first head of our
invention, in place of the hinged flap referred to under that head of our invention.
Fourthly. The combinations under the first, second and third heads above
referred to are or may be used with or without a steam cone spindle.
Fifthly. Our invention consists in combining and arranging either of the
combinations under heads one, two and three so as to form what are commonly
termed "combination injectors" in which the parts of injectors are combined and
arranged together in one casing so as to receive steam and water by one passage
and deliver water by another passage in the same junction with the boiler. Our
improved combination injectors being made with or without steam cone spindles,
and with a valve for controlling the supply of water, which valve can be opened
or screwed down upon its seating with a quick threaded screw upon the spindle.
Sixthly. Our invention consists in combining and forming by our improvements
hereinbefore referred to under the first, second, third and fourth heads combined
injectors commonly termed "double injectors in the same casing or separate
casings, that is to say, one injector receives steam and the water supply, and
delivers its combined steam and water to another set of nozzles or cones, which
receives steam, forming the second injector having a back pressure valve between
the two injectors.
"
The second injector is provided with an automatic overflow valve, either weighted
by a spring or by a diaphragm acted upon by the pressure of the fluid in the
delivery pipe.
In our improved double injectors, the axes of the cones or nozzles of the first
injector is in a line, or parallel with or at an angle to the axes of the cones or
nozzles forming the second injector receiving the discharged water and steam from
the first injector.
"
Seventhly. It is difficult for the drivers or firemen of locomotives to see or
ascertain when an injector is working "dry or without overflow, especially at
night, and the discharge from the overflow from an injector is liable at times to
injure persons when the outlet is in the ordinary position.
This part of our invention refers to and consists in arrangements by which the
overflow pipe from the injector is brought to the front on the foot plate of the
locomotive, and is made to discharge into a funnel in full view and so as to be
readily seen by the driver, and is then conveyed from the funnel to be discharged
downwards between the rails.
Or the overflow water from the injector is brought by a pipe to a position where
it will have to pass through a glass tube or box arranged so that its passage can be
seen when overflow is being discharged.
Fig. 1, is a longitudinal section.
Fig. 2, a view looking from the delivery end of the injector, the parts shown in
section being on the line A-B. Fig. 1.
Fig. 3, is a view looking from the steam nozzle end of the injector, the parts
shown in section being on the line C-D Fig. 1.
Figs. 1, 2 and 3, illustrate one modification of our invention.
Fig. 4, is a longitudinal section, and Fig. 5 a similar view to Fig. 4, with the
cone steam spindle and its casing omitted.
The Figs. 1 to 5 inclusive illustrate the first part of our invention.
Fig. 6, is a longitudinal section, and
Fig. 7, a longitudinal section of the combining coue shown in Fig. 6, detached
from the casing in a plane at a right angle to that of the section of the same part
shown in Fig. 6.

page_text: our invention.
Fig. 10, is an elevation, the casing and other parts being shown in section, also
showing outside views of some of the internal parts in their position in the
casing, and
Fig. 11, is a longitudinal section in about the line A-B Fig. 10 in a plane at a
right angle to that of Fig. 10-these Figs. 10 and 11 illustrate the fifth part of our
invention.
Fig. 12, is a longitudinal section of a double injector.
Fig. 13, is a longitudinal section, and
Fig. 14, is a view looking from the delivery end of the injector the parts in
section being in about the line A-B Fig. 13, showing another modification of
double injector.
Fig. 15, is a detached longitudinal section of combined combining and discharging
cones with actuating pinion.
These Figs. 12 to 15 inclusive illustrate the sixth part of our invention.
Fig. 16, is a sectional elevation.
Figs. 17 and 18 similar elevations illustrating modes of carrying out the seventh
part of our invention.
Fig. 4, is a well known common type of injector having a cone steam spindle
with which injector our improvements are combined.
a, is the casing having a water branch junction a¹, an overflow branch junction a²,
and a delivery junction a³.
At the steam nozzle end there is also a flange junction a', for a casing a", in
which the steam cone spindle 6, is carried, in which casing there is a stuffing box
for packing the outer end of the cone spindle b, and there is also a junction
branch a, for the steam supply pipe. The steam nozzle c, has a flange at its
larger end by which it is held and secured between the flanged ends of the
casings a and a", when they are screwed together.
the
The interior of the casing a, is bored out to fit the cylindrical exterior of the
combining cone d, which is combined with the receiving and discharging cone e,
exterior of which is cylindrical and fits the bored out casing for it.
e, is the overflow orifice across the nozzles between the combining and receiving
cones or nozzles, and this orifice discharges into the overflow chamber a
The exterior of the combining cone d, has spur teeth d', formed on it which gear
with a spur pinion d³, having a shaft or pivot passing through a hole in the side of
the casing a.
The exterior end of the shaft or pivot for the pinion d, has a hand wheel (not
shown) secured upon it, which hand wheel is indexed and there is a finger
(not shown) secured to the exterior of the casing a, which points to this index on
the hand wheel, by turning which, the combined combining and receiving and
discharging nozzles can be slided to and fro in the bored out axis of the casing a,
to regulate the water and adjust it to the steam supply.
The bore of the casing a, for the exterior of the discharging nozzle e, forms its
continuation and there is or may be a back pressure valve f, the stem f¹, of which
is guided in a socket carried ou arms from a ring f2, secured in the delivery end
of the casing, the valve f, seating against the end of the bore in the axis of the
injector, for the discharging nozzle.
Our improvements in this class of injector consist in forming the combined
combining and receiving and discharging nozzles & and e, with a hinged flap d³, on
the combining cone d, which may be hinged on a fulcrum d', near either the large
or small bore end of the combining cone d, but at the latter end by preference as
shown in Fig. 4. This flap d³, when closed as shown in Fig. 4, completes the bore
of the combining cone d, but in starting the injector it turns on its hinge and
can open until one end of its exterior comes against the interior bore of the casing
for the exterior of the combining nozzle d, and will then in such position allow a

page_text: free discharge of fluids until the jet is fully established when the partial vacuum
then formed within the combining cone d, will cause the flap d³, to close as shown
in Fig. 4, and complete the conical bore of the combining cone.
Fig. 5, shows an injector having our improvements combined therewith which is
the same as that shown by Fig. 4, but is without the casing a", and steam cone
spindle 6, the steam supply being brought directly to the junction flange a', at the
steam nozzle end of the casing.
Figs. 1, 2 and 3, also represent an injector having our improvements applied to it
which is similar to that shown by Figs. 4 and 5, except that a cock for turning on
and off, or regulating the water supply and a valve applied to the overflow
chamber a, is shown combined therewith.
The water cock g, is a cone plug cock fitting in the seating for it in the casing
and it is arranged and has its stem or spindle g', packed by a stuffing box, as shown
in Fig. 2.
The overflow valve h, is in a casting ', having three branches (see Fig. 3)—
one of which is screwed to screw into the hole in the casing a, from the overflow
chamber a*.
Another branch is screwed for a coupling which connects the end of the pipe h²,
with it for taking away the overflow, and the third branch is screw tapped for a
screw plug h³, in the axis of the inner end of which there is a hole to guide the
stem, of the valve which has its seating in the three branch casting. The
screw plug h³, can be screwed in to hold the valve h, against its seating, or screwed
out to allow the valve to open and close or to be removed.
Figs. 6 and 7 illustrate the second part of our invention.
a, is a casing having flange junctions for steam at, for water a', for overflow a²,
and for delivery a³.
C, is the steam nozzle; d, is the casting for the combining nozzle and its delivery
end screws on to the small bore end of the exterior of the receiving and discharging
nozzle e, which is formed on a casting that screws into the delivery end of the
casing a.
The combining, receiving and discharging nozzles are thus screwed
together and are screwed at the same time into the end of the casing a, in a well known
manner. The large bore end of the combining nozzle d, and the discharging nozzles e,
have respectively flanges do and e², which have in the edge of each, a groove for packing,
to fit fluid tight in the partitions to which they come opposite when screwed into
the casing a, which flanges and partitions separate the overflow chamber a, in the
casing from the steam and water chamber and delivery chamber.
There is or may be a back pressure valve f, in the delivery branch a³, arranged
the same as that herein before described and shown in Figs. 4 and 5. The casting
for the delivery nozzle e, has ports es, in its sides so that the fluid may pass to the
annular chamber a', round it and then to the delivery branch a³. The end of this
casting for the nozzle e, is also closed by a screw plug e¹, as shown.
According to our improvements we insert a short nozzle d, at the large end of
the casting do, for the combining cone, and upon the exterior of this short nozzle d,
fit a short tube d', which can slide along its exterior.
When the jet is established this sliding tube d', is in the position shown in
Figa. 6 and 7, the combining nozzle is thus made continuous and closed except that
there is a recess in it, but when starting the injector before the jet is fully established
this tube d', slides upon the exterior of the short nozzle d, and uncovers an opening
formed by a cross slot or hole do, through the casting d³, (see Fig. 7), when there is
a free escape for the fluids until the jet is fully established at which time the tube ď,
slides to its position shown in Figs. 6 and 7.
e, is the ordinary overflow orifice between the small ends of the combining and
receiving nozzles.
The discharged fluids from both cross slots d³ and e', enter the overflow chamber a®,
and pass away from the overflow branch a².
Figs. 8 and 9 represent two views of combined combining and receiving and

page_text: discharging nozzles detached from the injector casing having the sliding tubular
part d', upon the short nozzle d, forming the first part of the combining cone
described in reference to Fig. 6 and 7.
Within the interior bore of the casing a, made of suitable size these combined
combining and receiving and discharging nozzles Figs. 8 and 9, with sliding tube d",
may be substituted for those having the hinged flap d³, shown in Figs. 1, 4 and 5
according to the third part of our invention.
Fig. 4, and the preceding explanation and Figs. 10 and 11 to be hereinafter
described illustrate how cone steam spindles b, may be combined with injectors
having our improvements applied to them according to the fourth part of our
invention.
Figs. 10 and 11 illustrate the fifth part of our invention.
a, is the casing of the combination injector; as, the flange by which it is united
to the boiler from which it receives its steam and to which it supplies feed water.
The hole a', in the casing for delivery has a seating for a cone faced valve i, on
a stem or spindle it, which stem screws through a bush 2, screwing steam tight into
the casing a.
The outer end of the stem i, of the valve i, has a nut ³, secured upon it by
rotating which the valve can be opened and closed.
The hole in the delivery end of the casing a, which is opposite the discharging
nozzle e, closed by a screw plug a, fluid tight and the discharged fluid goes along
a passage a, in the casing to a back pressure valve, having its seating on the
casing a, the stem f³, of this valve being guided in a hole in a screw plug f2,
screwing fluid tight into the end of the casing a. The discharged fluid after passing
this valve f, goes along a passage formed in the casing a, to the chamber for the
stop valve i
The passage a", for steam from the boiler has a seating formed in it for a cone
faced valvej, on the end of a spindle, which is screwed and screws through a
tube 2, screwed fluid tight into a hole in the casing a, and in this tube j, a
stuffing box, is formed for packing the outer end of the spindle j¹; j³, being the
screw for forcing in the packing material.
j, is a hand wheel secured on the outer end of the spindle j, by rotating which
the valve j, can be opened or closed and the steam supply adjusted.
The steam passes from the chamber of the valvej, by a passage aº, formed in
the casing to the steam nozzle c, which in this case is formed with a cylindrical
part c', at its large bore end in the outer end of which a stuffing box is formed for
a cone steam spindle b.
There is a flange c², round the large bore end of the steam cone or nozzle having
a groove round it for packing material so that when the steam cone c, is screwed
into the casing, its cylindrical end makes a fluid tight joint with the end of the
casing a, the flange part 2, will make a fluid tight joint with the partition in
the interior of the casing a, which partition separates the chamber or cavity a', for
steam from the chamber or cavity a³, for water.
There are holes c³, in the sides of the cylindrical part at the outer end of the
steam cone c, which come opposite an annular cavity a', within the bore of
the easing into which cavity the steam enters from the passage a, and can
pass through these slots or holes ³, into the interior of the steam cone c.
The steam cone spindle b, can be slided in and out through its stuffing box to
adjust the supply of steam by auy suitable means, a lever ', is shown in
Figs. 10 and 11 having its fulcrum 2, on a bracket secured to or on a projection 5,
from the side of the casing a.
The end of this lever b', is connected with the outer
end of the steam cone spindle b, by a slot in the forked end of the lever and a cross
pin 63, in the outer end of the steam cone spindle b.
There is or may be a segment ab, from the bracket as, carrying the fulcrum of
the lever 61, indexed or toothed for a pointer or catch jointed or secured to the
lever b', to show the extent to which the spindle b, is inserted into the conical bore
of the steam nozzle c.

page_text: a', Fig. 10, is the water supply branch from the casing a, prepared for a screw
coupling by which it is connected with the water supply pipe k.
There is a flap valve g, hinged at g', to a ring g², and closing against a facing on
the ring as shown in Fig. 10, and this ring 92, is inserted fluid tight in a recess
formed for it in the casing a.
There is a pin or projection g³, from this valve g, which will come against the
interior of the casing when the valve has opened to the extent desired.
There is a hole in the casing opposite the Hap valve, giving access to it which
is closed by a serew plug a'.
Any other suitable valve may be substituted for the flap valve g.
The combined combining and receiving and discharging nozzles with a hinged
flap d³, (supposed removed in Fig. 10) such as that described in reference to
Figs. 1 to 5 inclusive is combined with this injector, which is adjusted by
a pinion d², and hand wheel as hereinbefore explained in reference to Figs. 1 to 5
inclusive.
The passage a, from the overflow chamber a, is in the casing and at its outlet
there is a hinged flap valve h, hinged to and coming against a facing on the
casing a, (though any other suitable valve may be substituted) and access is
given to this flap valve h, through a hole in the casing a, closed by a screw
plug a'.
The overflow branch a², from the casing is prepared for a coupling to unite it
with the pipe ², taking the overflow away.
In place of the combining cones with a hinged flap d³, shown in Figs. 10 and 11,
combining cones with a sliding tube d, as explained by reference to Figs. 6 and 7
and 8 and 9, may be substituted.
Fig. 12, illustrates one modification showing a double injector according to the
sixth part of our invention.
a, is the casing formed in one casting, which has a flange junction a*, at one end
for a flanged casting 1, connected by a screw union with the steam pipe l, for
supplying both steam nozzles of the double injector.
The casing a, has also a junction branch a¹, prepared for a union to couple up
with the water supply pipe k, and two overflow junctions or branches one for each
injector.
The overflow for the first injector in which the water enters has a casting h
screwed into it which casting has a seating formed in it for a
cone faced
valve h, the stem *, of which is guided in a hollow screw plug ³, screwing into
the casting .
When overflow takes place it passes through the valve ½, and out of the spout h*,
from the casting h³.
The overflow from the second injector receiving fluid from the first injector when
it leaves the overflow chamber a, passes a valve, opening outwards which valve
has its seating in the casing a, and this valve is on a stem or spindle, the inner end
of which is guided in a hole in a bar crossing the opening having the valve seating.
The outer end of the stem has a head h, and the stem or spindle part at that end is
guided in a hole in a bush a", screwing into the casing a.
The outer face of the head ', comes against a diaphragm 7, of suitable
material, the margins of which are secured fluid tight by bolts or screws between a
flange on the junction for the overflow and a cap plate a", between the inside
of which and the outside of the diaphragm ', there is a cavity ³, which
communicates by a small metal bent pipe, with the annular cavity a', in the
casing a, for the delivery as shown in dotted line, the ends of the pipe h, being
connected by suitable screwed nipples inserted one in the lid a", and the other in
the side of the casing a, for union couplings one on each end of the pipe h³.
Thus arranged this overflow valve 1, is not allowed to open when the full
pressure of the established jet is in the delivery cavity a', of the injector, and as
such pressure does not exist in that cavity while the jet is starting and is not fully
established the valve h, is allowed to open by the pressure acting upon it in the

page_text: overflow chamber a, which pressure becomes less or least when the jet is rully
established and the pressure in the delivery cavity a', is least when the jet is
not established and is at its greatest when the jet is fully established.
The overflow from the second injector passes out at the branch a³, and to the
overflow pipe .
The delivery branch from the casing a, is from the side supposed to be cut away
in Fig. 12, by the section, and has a back pressure valve in it similar to the
valve f, in the delivery branch of the injector illustrated by Fig. 6 of the drawings
hereinbefore described.
The combined combining and receiving and discharging nozzles in the first
injector to receive water, has a hinged flap d³, combining cone and is constructe
and arranged and actuated similar in this respect to those herein before described
and shown in Figs. 1, 4 and 5 and Figs. 10 and 11, the water being regulated by
the hand wheel and pinion d2, and rack.
At the casing at the end of the discharging cone of the first injector to receive
water there is a back pressure valve having its seating at the end of the
discharging cone as shown.
The stein, of this valve f, is guided in a hollow plug 2, screwing fluid tight
into the end of the casing a.
If required a helical spring f³, may be placed round the stem f¹, of the valve f.
one end abutting against the inner end of the screw plug 3, and the other end
against the back of the valve f, to assist to close the valve in the case of a return
of the fluid.
, is the steam nozzle for the first injector to receive water.
From the back pressure valve f, the fluid discharged goes by a passage aº, in the
casing to the chamber in the casing for the steam nozzle c, and combining cone of
the second injector.
The combining cone with a hinged flap d³, and receiving and discharging cones
for the second injector are constructed and arranged as in the well known exhaust
steam injector and screw into the delivery end of the casing in like manner.
Figs. 13 and 14 illustrate another modification under the sixth head of our
invention, forming a double injector, one injector being supplied with exhaust
steam or both exhaust and live steam and the other with live steam forming a
live steam injector supplementary to an exhaust injector which is to feed water
against higher pressures than a simple exhaust injector can by itself overcome.
a, is the casing-It has a junction flange a', at one end for exhaust steam and
live steam a junction flange a', for live steam to the supplementary live steam
injector a branch a², for overflow from the exhaust injector and a branch a", for
overflow from the supplementary live steam injector, a branch for water a¹, to the
exhaust steam injector and one a³, for delivery from the supplementary live steam
injector.
The flange junction a', for the live steam supplementary injector forms a junction
with a flange casting 1, having a branch screwed for a union for the steam
pipe 1.
The overflow branch a³, from the exhaust injector (in which there is an overflow
flap valve like the valve h, Fig. 11) has a flange junction for connection with a
flange casting m³, having a branch prepared for a union coupling for the overflow
pipe h².
The water branch a¹, overflow branch a', from the live steam supplementary
injector and the delivery branch a³, from that injector are prepared for union
couplings respectively for pipes to carry away fluids therefrom-The delivery
branch a³, has a back pressure valve f, in it having its seating in the casing a, the
stem of this valve f¹, being guided in a hollow plug f2, screwing fluid tight in
the casing a.
The outlet from the chamber a³, in the casing for the overflow from the
supplementary live steam injector has an automatic valve, actuatel by a
diaphragm, and the pressure of water in its delivery cavity, which valve and
1

page_text: diaphragm and pipe for pressure is arranged the same as that herein before
described in connection with the second injector of the double injector illustrated
by Fig. 12 (see Fig. 14) but the pipe for pressure to act on the diaphragm between
the cavity for the diaphragm and the delivery from the injector is not shown
in Figs. 13 and 14.
The exhaust steam nozzle e, is fitted and arranged to slide to and fro in the bore
of the casing a, so that it may be adjusted for water in respect of the combining
cone d. This adjustment is by a pin n', formed on the inner end of a spindle n,
and excentric thereto.
This excentric pin n', fits in a hole in a piece that can slide in a slot across
the exterior side of the steam cone c¹.
The inner end of the spindle n, has its bearing in a hole in the casing a, and
there is a collar upon it at that end coming against the bottom of the recess
forming a stuffing box round the spindle n, the packing for which box is
compressed by a tubular screw 2, through which the spindle passes, which
tubular screw screws into the casing a.
On the outer end of the spindle n, a hand wheel (not shown) is secured for
adjusting the water and this hand wheel has or may have an inlex formed upon it
for a finger secured to the casing a, to point at what extent of opening there is for
water.
There is a flanged casting a, to secure to the end of the flange at, for exhaust
steam, and this flanged casting a', has a cross bar a", into the boss in the centre of
which a small nozzle p, for live steam is screwed fluid tight, which small nozzle
comes into the centre of the nozzle e, for exhaust steam.
The cross bar a", is hollow and is supplied by live steam, by a small pipe (not
shown) between it and the live steam branch 1, for the supplementary live steam
injector.
There is a hinged flap combining cone, and receiving and discharging cone or
nozzle connected together in a well known manner and screwed into the end of
the casing for the exhaust injector-the collar, on the exterior of the
discharging cone being screwed and screwing into the casing a.
There is a back pressure valve f, having its seating on the end of the
discharging cone and the stem f', of this valve is guided in a hollow plug f2,
screwing fluid tight into the end of the casing a. There is a helical spring f³,
round this stem f¹, as explained in reference to the valve f, Fig. 12.
The fluid discharged by the exhaust steam injector, passes into two cavities a",
in the casing a, between the bores in the casing for the nozzles of each injector
(see Fig. 14) and then these two cavities av, unite and form one passage, and
then forms a junction with the chamber in the casing round the steam nozzle c,
of the supplementary live steam injector, and passes through its nozzles to the
delivery.
The nozzles for the supplementary live steam injector have a hinged flap
combining cone and the nozzles are constructed and arranged and inserted at
the end of the casing same as those of the well known exhaust steam injector.
If desired, combined hinged flap combining and receiving and discharging
cones like Fig. 15, may be substituted for the nozzles in the exhaust steam
injector part of the double injector.
In this case the movable steam cone c', and arrangements for actuating it are
dispensed with as it is then a fixed exhaust steam nozzle and the water is then
adjusted by the toothed pinions d', and rack, on the exterior of the combining cone
as herein before described in reference to Figs. 1 to 5 inclusive and Figs. 10 and 11.
The steam and water branches of the injector illustrated by Figs. 13 and 14 or
the pipes connected therewith may have cone cocks (as indicated by peculiar
dotted line marked a³ and a") or other suitable valves for turning on and off
the supply of steam and water and the handles of these cocks are or may be
connected by a rod jointed to each handle so as to be simultaneously opened and
closed.

page_text: The arrangement and construction of nozzles illustrated by Figs. 8 and 9 may
be also substituted for the arrangement of exhaust steam nozzles shown by Fig. 13,
or those illustrated by Fig. 15.
The injectors hereinbefore described and illustrated by reference to Figs. 1, 2
and 3, Fig. 4, Fig. 5, Figs. 10 and 11, and Fig. 12, though shown proportioned for
live steam injectors may be used for exhaust steam with the bores of the nozzles
suitably proportioned for exhaust steam.
Fig. 16, is a sectional elevation showing a part of the casing at the overflow
outlet or outlet valve of an injector, illustrating one mode of carrying out the seventh
part of our invention.
a, is a part of the casing of the injector supposed to be at its overflow; h, a flap
valve closing the outlet from the overflow chamber-a screw plug a', screwing into
the branch a, from the casing a, and giving access to the flap valve h, the
overflow branch a³, from the casing being prepared for a union coupling, the
pipe 2, with it, for carrying away the overflow.
In the branch a², below the valve h, a small trough q, is formed into which any
overflow will first come, until the trough is filled, then it will overflow and pass
out at the branch a².
Whenever there is overflow much or little, the trough 7, will be more or less
full and there is a passage from this trough to a nozzle q', through which overflow
from the nozzle is discharged and is seen as it escapes from the nozzle g¹.
The discharged fluid may be caught in a trough 92, on the exterior of the
branch a², for overflow and taken back into the overflow branch a². By this
arrangement it will be readily seen whether or not the injector is working "dry"
or if there is an overflow.
If the injector is in a position not to be readily seen by the engine driver, a
small pipe may be connected with the trough g, and taken to a point where
discharge from the overflow can be seen when it exists, provided the overflow
at the injector is at a higher level than the outlet end of the small pipe so that
the fluid can run down the small pipe to the point where it is to be discharged, so
as to be seen.
Another arrangement for showing the discharge of water from the overflow is
shown by Fig. 17.
In this the end of a pipe ², from the overflow, discharges into a funnel 9, so
that such discharge can be seen.
Another arrangement is shown by Fig. 18.
In this modification there is a
break in the metal of the overflow pipe 2, in which a short length of glass
tube g, is substituted, this glass tube being covered and protected by a thin metal
tube q', in which there is a hole or holes 7, through which and the side of the
glass tube 93, water can be seen when passing down the pipe.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is
1. The combination of a hinged flap (d³) sliding tube (7) or equivalent
automatic supplementary overflow with combined combining and receiving and
discharging cones or nozzles, arranged to move in the axial line of the nozzles
to and from the steam cone or nozzle to adjust the water to the steam, substantially
as hereinbefore described and illustrated by the drawings.
2. The combination of a sliding tube (d) on the exterior of the first part of
the combining cone to cover and uncover a supplementary overflow from the
combining cone or nozzle substantially as herein before described and illustrated by
Figs. 6 and 7 of the drawings.
3. The combination and arrangement of injectors with or without steam cone
spindles substantially as hereinbefore described and illustrated by Figs. 1, 2 and 3
by Fig. 4, and by Fig. 5, and when modified by substituting for the adjustable
combined combining and receiving and discharging cones or nozzles having a

page_text: hinged flap (d) shown in those figures, adjustable combined combining and
receiving or discharging cones or nozzles having the sliding tube (d') substantially
as herein before described and illustrated by reference to Figs. 8 and 9 of the
drawings.
4. The combination and arrangement of injectors with or without a steam conc
spindle substantially as hereinbefore described and illustrated by Figs. 6 and 7 of
the drawings.
5. The combination and arrangement of "combination injectors" having
adjustable combined combining and receiving and discharging cones or nozzles
with a hinged flap (d³) upon the combining cone or nozzle substantially as
herein before described and illustrated by Figs. 10 and 11 of the drawings or
when modified by substituting for the hinged flap nozzle the sliding tube (d)
or its equivalent substantially as herein before described and illustrated by reference
to Figs. 8 and 9 of the drawings.
6. The combination and arrangement of double automatic and adjustable
injectors in one casing substantially as hereinbefore described and illustrated by
Fig. 12 of the drawings.
7. The combination and arrangement of double automatic and adjustable
injectors in one casing forming a combined exhaust and live steam supplementary
injector substantially as hereinbefore described and illustrated by Figs. 13 and 14
and when modified by substituting the nozzles illustrated by Fig. 15, for the
hinged flap combining cone or nozzle substantially as herein before described.
8. The combinations of arrangements with injectors for readily showing when
there is overflow from them when working substantially as hereinbefore described
and illustrated by Figs. 16, 17 and 18 of the drawings.
9. The combination with combined exhaust and supplementary live steam
injectors of a cock or valve in each branch or pipe for supplying live steam and
water to the injectors, which cocks or valves a" and as, for live steam and water
are connected so as to be simultaneously opened and closed by one movement
substantially as hereinbefore described in reference to the double injector illustrated
by Figs. 13 and 14 of the drawings.
Dated this Seventh day of November 1895.
PETER J. LIVSEY,
Agent.