Improvements in or applicable to Injectors for Raising and Forcing Fluids.
Year: 1895

page_text: Date of Application, 26th Jan., 1895
Complete Specification Left, 23rd Oct., 1895-Accepted, 30th Nov., 1895
PROVISIONAL SPECIFICATION.
Improvements in or applicable to Injectors for Raising and
Forcing Fluids.
We, JAMES GRESHAM, Managing Director, of the Firm of Gresham and
Craven Limited, of Craven Iron Works, Salford, Manchester, in the County of
Lancaster, Engineers, and GEORGE KIERNAN, of the same place, Manager, do
hereby declare the nature of the said invention, to be as follows:-
1. In the Complete Specification of Letters Patent numbered 3169 of the
year 1867 granted to James Gresham (one of the present applicants) injectors are
described in which the steam and water, which is to pass to the nozzles is regulated
or adjusted at starting the injector to work by one handle or lever, and our
invention refers to improved combinations and arrangements by which the steam
and water is regulated in like manner by one handle or lever.
The means of carrying out our invention may be varied, but one combination and
arrangement which we prefer as well as the entire apparatus forming an improved
"combination injector" is described as follows.
There is a casing having passages for the steam supply to and delivery from the
injector, which passages lead to a flange for junction with the boiler.
The longitudinal axis of the injector is in a horizontal plane, by preference, and
the steam and delivery passage leading to the said flange are in such plane as well
as the axes of two cone stop valves, one for steam and the other for the delivery
which valves are on screwed stems, guided in tubes screwed into the casing on one
side of the main casing.
The steam passes from the boiler through a hole in the flange along the passage
through the stop valve to an annular chamber in the main casing from which it can
go as hereinafter described to the steam nozzle.
The combined water and steam from the discharging nozzles, passes from an
annular chamber in the main casing to and through the stop valve and then along
the passage through one of the holes in the flange to the boiler.
The steam nozzle is formed on the inner tubular end of a screwed spindle, the
exterior end of which has the handle upon it for starting and regulating the.
injector.
The screwed spindle screws through a tubular part which screws into the end of
the main casing, and this tubular part has a shoulder upon its exterior near its inner
end which comes against and makes a joint with a shoulder in the interior of the
casing when the tubular part is screwed in.
In the outer end in the interior of the tubular part there is a seating for a cone
valve formed upon the spindle the tubular inner end of which forms the steam nozzle.
There are a number of holes through the tubular sides of the tubular part that
allow steam to pass from the annular chamber between the interior of the main.
casing and the exterior of the tubular part to the annular space on the inlet
side of the coue valve on the spindle having the tubular steam nozzle upon its
inner end.
There are also a number of holes laterally on the inner side of the cone valve on
the spindle that allow the steam which enters the interior of the tubular part when
the cone valve is opened, to pass to the interior of the steam nozzle which slides
and rotates when the spindle is screwed in or out through and is guided by a
1

page_text: nozzle screwed into the inner end of the tubular part, and the inner small end of
this guiding nozzle extends to the mouth or wide end of the combining cone.
There is a cap that screws into the end of the main casing in the outer end of
which cap the stuffing box is formed for packing the spindle."
With the arrangement described, the exterior of the steam nozzle is cylindrical
and fits and can slide in the guiding nozzle and may fit so as to prevent steam to a
great extent from passing between the exterior of the steam nozzle and interior of
the guiding nozzle, but should any steam pass between the exterior of the steam
nozzle and the guiding nozzle it goes directly to the combining cone and mixes
with the water and thus forms a part of the steam necessary to properly work the
injector.
The large end of the combining cone is secured in a partition in the main casing.
The movable smaller end of the combining cone is guided in a part screwed into
the end casing and is formed, constructed and arranged in a well known manner.
The delivery end of the casing is closed by a screw cap in an ordinary manner.
The automatic water and delivery valves are each on a stem guided in a part
each screwed into a branch from the upper side of the main casing.
The water and overflow branches are on the lower side of the main casing.
According to a modification of this part of our invention, there may be a small
annular space between the exterior of the steam nozzle and the said guiding nozzle
and thus there will be a central and annular steam jet both combining with the
water in the combining cone or nozzle.
In the combinations above and in those hereinafter described, internal packings
are entirely dispensed with, and as the central steam nozzle moves in and out with
the spindle and steam valve, the water and steam are both simultaneously regulated.
2. The parts according to another modification of our invention are or may also
be arranged with the valve on the spindle and steam nozzle on its end sliding
through a tubular guiding nozzle so that the valve spindle when moved outwards
will open the steam and regulate the water at the same time, the steam nozzle
extending some distance into the combining cone when the steam valve on the
spindle is closed.
3. According to another modification of our invention, the water is regulated by
a self-closing valve in the water branch. The steam nozzle is arranged to rotate
but not to move endways in the casing, and it fits squares on the tubular inner end
of the spindle actuating the steam valve, which end of the spindle can thus slide in
and out of the square hole in the steam nozzle which has a cam on its exterior, that
acts upon a projection from the water valve, and allows it to open to the extent
required.
4. According to another modification of our invention both the steam and water
branches have self-closing valves and the tubular steam nozzle is carried by and
rotates with the spindle and there is a cam on the spindle and one on the exterior
of the steam nozzle which cams operate when the spindle is rotated, (it does not
move end ways) to open the steam self-closing valve and allow the water valve to
open to the extent required.
5. According to another modification of our invention there is a self-closing
valve in the water branch allowed to open by a cam as above explained, on the
exterior of the steam nozzle which rotates but does not move endways, the steam
valve on the spindle (which rotates only) being a disc which uncovers steam ports
more or less when the spindle is rotated so that the steam and water is regulated by
rotating the spindle by the same handle.
6. By another modification of our invention, a screwed steam valve spindle has
its interior end tubular and screw tapped to fit the outer end of a tubular steam
nozzle, which is prevented from revolving with the screwed steam spindle by the
point of a set screw entering a slot in its side consequently the steam nozzle slides
in and out through its nozzle guide when the steam valve spindle is screwed in or
out so that both steam and water are adjusted simultaneously by the movement of
one handle.

page_text: 7. Our invention relates to and consists in arrangements by which leakage of
steam, from the stean chamber supplying the steam nozzle of an injector past the
exterior of the nozzle in a tube through which it slides, is intercepted by a groove
on the exterior of the steam nozzle and conveyed by holes through the sides of the
steam nozzle into its interior to pass on and form a part of the steam jet.
Dated this Twenty-fifth day of January 1895.
Improvements in or applicable to Injectors for Raising and
Forcing Fluids.
We, JAMES GRESHAM, Managing Director of the Firm of Gresham and Craven
Limited, of Craven Iron Works, Salford, Manchester, in the County of Lancaster,
Engineers, and GEORGE KIERNAN, of the same place, Manager 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:
1. In the Complete Specification of Letters Patent numbered 3169 of the
year 1867 granted to James Gresham (one of the present applicants) injectors are
described in which the steam and water which is to pass to the nozzles is regulated
or adjusted at starting the injector to work by one handle or lever, and our
invention refers to improved combinations and arrangements by which the steam
and water is regulated in like manner by one handle or lever.
The means of carrying out our invention may be varied, but one combination and
arrangement which we prefer as well as the entire apparatus forming an improved
"combination injector "is described as follows:-
There is a casing having passages for the steam supply to, and delivery from the
injector, which passages lead to a flange for junction with the boiler.
The longitudinal axis of the injector is in a horizontal plane, by preference, and
the steam and delivery passages leading to the said flange are in such plane as well.
as the axes of two stop valves, one for steam and the other for the delivery, which
valves are on screwed stems, guided in tubes screwed into the casing on one side of
the main casing.
The steam passes from the boiler through a hole in the flange along the passage
through the stop valve to an annular chamber in the main casing from which it can'
go as hereinafter described to the steam nozzle.
The combined water and steam from the discharging nozzles, passes from an
annular chamber in the main casing to and through the stop valve, and then
along the passage through one of the holes in the flange to the boiler.
The steam nozzle is formed on the inner tubular end of a screwed spindle, the
exterior end of which has the handle upon it for starting and regulating the
injector.
The screwed spindle screws through a tubular part which screws into the end of
the main casing, and this tubular part has a shoulder upon its exterior near its
inner end which comes against and makes a joint with a shoulder in the interior of
the casing when the tubular part is screwed in.
In the outer end in the interior of the tubular part there is a seating for a cone
valve formed upon the spindle the tubular inner end of which forms the steam nozzle.
There are a number of holes through the tubular sides of the tubular part that
allow steam to pass from the annular chamber between the interior of the main
casing and the exterior of the tubular part to the annular space on the inlet side
of the cone valve on the spindle having the tubular steam nozzle upon its
inner end.

page_text: WHICH Bes and rates, when the spinate is screwed in or out througe and is guided
by a nozzle screwed into the inner end of the tubular part, and the inner small
end of this guiding nozzle extends to the mouth or wide end of the combining
cone.
There is a cap that screws into the end of the main casing in the outer end of
which cap the stuffing box is formed for packing the spindle.
With the arrangement described, the exterior of the steam nozzle is cylindrical
and fits and can slide in the guiding nozzle and may fit so as to prevent steam to a
great extent from passing between the exterior of the steam nozzle and interior of
the guiding nozzle, but should any steam pass between the exterior of the steam
nozzle and the guiding nozzle it goes directly to the combining cone and mixes
with the water and thus forms a part of the steam necessary to properly work the
injector.
The large end of the combining cone is secured in a partition in the main
casing.
The movable smaller end of the combining cone is guided in a part screwed
into the end casing and is formed, constructed and arranged in a well known
manner.
The delivery end of the casing is closed by a screw cap in an ordinary manner.
The automatic water and delivery valves are each on a stem guided in a part each
screwed into a branch from the upper side of the main casing.
The water and overflow branches are on the lower side of the main casing.
According to a modification of this part of our invention there may be a
small annular space between the exterior of the steam nozzle and the said guiding
nozzle and thus there will be a central and annular steam jet both combining with
the water in the combining cone or nozzle.
In the combinations above and in those hereinafter described internal packings
are entirely dispensed with, and as the central steam nozzle moves in and out
with the spindle and steam valve, the water and steam are both simultaneously
regulated.
2. The parts according to another modification of our invention are or may also
be arranged with the valve on the spindle and steam nozzle on its end sliding
through a tubular guiding nozzle so that the valve spindle when moved outwards
will open the steam and regulate the water at the same time, the steam nozzle
extending some distance into the combining cone when the steam valve on the
spindle is closed.
3. By another modification of our invention, a screwed steam valve spindle has its
interior end tubular and screw tapped to fit the outer end of a tubular steam
nozzle, which is prevented from revolving with the screwed steam spindle by the
point of a set screw entering a slot in its side consequently the steam nozzle slides
in and out through its nozzle guide when the steam valve spindle is screwed in or
out so that both steam and water are adjusted simultaneously by the movement of
one handle.
Fig. 1, is a section through the longitudinal axis of an injector in a plane passing
through the axis of the junctions for the feed water and overflow pipes or in the
line E-F Fig. 3.
Fig. 2, is a longitudinal section in the line G-H Fig. 4, of the casing with the
outside views of the nozzles or parts screwed into the casing.
Fig. 3, is a cross section on the line C-D Figs. 1 and 2, outside views of some of
the internal parts being shown.
Fig. 4, is a cross section on the line A-B Figs. 1 and 2, outside views of some of
the interior parts being shown.
Fig. 5, is a longitudinal section of the modification of an injector at the steam
nozzle end.

page_text: Fig. 6, is a similar view to Fig. 5, of another modification of an injector.
Fig. 7, is a longitudinal section of another modification of our invention.
Figs. 1, 2, 3 and 4 illustrate an injector according to the first head of our
invention.
a, is the casing of the injector, and on this casing, there is a flange a', having
openings which communicate with the boiler to which the injector is to be secured
fluid tight.
One opening (a², see Fig. 2) is for steam which enters a cavity or passage a³, the
outlet from which is faced to form a seating for a cone faced valve b, upon the end
of a screw spindle 6', which screws into a bush 62, which bush is screwed on its
exterior to screw into the casing a, fluid tight when the collar 63, on the bush comes
against the casing a.
The exterior end of the spindle 6', is made square for a key, and the interior end
is grooved to fit as fluid tight as possible into the interior end of the bush, and to
check the passage of steam. When the valve b, is screwed inwards against its facing,
it is closed against steam from the boiler. When the valve spindle b', is screwed
outwards to the fullest extent there is a facing on the back of the valve b, that
seats against a facing on the inner end of the bush 62, so that steam cannot
pass
spindle b. This last named position of the valve 6, is its normal one when the
injector is working, and the valve only need be shut when the nozzles are being
examined or repaired.
the
The other port or opening at, (Fig. 2) communicates with a passage aº, leading
to a valve c, arranged exactly the same as that (6) for steam from the boiler above.
described, this valve c, when closed prevents water passing from the boiler to the
injector.
On the casing a, there is a branch as, (see Figs. 1 and 3) for a screw plug d,
which when screwed into the branch is fluid tight.
This screw plug d, (shown in section in Fig. 1, and by an outside view in Fig. 3).
forms a guide for the stem d', of a flat faced disc valve d. The stem of the.
valve d, is screwed with a square thread to allow fluid to pass along its sides
when moving in or out of the guiding hole in the screw plug d.
In the casing a, there is a seating formed for the flat faced disc valve d³, and
from this seating there is a passage a', formed on the exterior of the interior
casing (see Fig. 3) from the branch a³, on the casing a, for the water supply
pipe d³
This valve, lifts and opens to allow the water to pass to the steam and combining
nozzles and closes against its return.
Another branch a³, on the casing is for the delivery valve.
This valve is a flat faced disc valve on a stem e¹, guided in a screw plug e³,
screwing into the branch a, of the casing and is arranged in a manner similar to
the valve d², for water except as follows.
There are cross ribs e³, on the back of the valve e, which act as a stop to the left
of the valve when against the inner end of the screw plug e², and the seating for the
valve is made separate from the casing a, and is formed by a ring e, which is
screwed into a hole in the casing, the interior of the ring e, on which the seating is
formed being hexagonal or of some other sided figure to fit a corresponding tool
for screwing the ring seating e, into the hole for it in the casing.
This valve e, lifts and opens to allow the water delivered from the injector to
pass to the boiler through the passages a", (Fig. 4) and as, and port a', and closes
against its return.
The steam nozzle f, is a tube on the end of a screwed spindle f¹, which screws
into and through a bush or tubular part f2, which has a collar f³, near one end,
which collar is screwed to screw into the casing a.
When screwed into the casing to its fullest extent, there is a collar, near the
inner end of the tube f, which makes a fluid tight joint with an internal flange or:
shoulder in the interior of the casing a.

page_text: The outer end of the spindle 1, is plain and its square threaded screwed part f,
is in about the middle of the spindle and it is put and screwed into the tubular
part f, from its inner end.
The spindle f¹, is enlarged to form a collar or valve, and has a facing formed
on the outer side of this collar which fits a seating formed on the interior of the
tubular part. This collar or valve fe, has two holes f, across it which are open
to the space, in the interior of the tubular part 2, and into the tubular part f,
of the spindle forming the steam nozzle.
The exterior of the steam nozzle f, is cylindrical and fits and slides through a
guiding nozzle f, screwing fluid tight into the end of the tube part f', a shoulder
on this nozzle f, coming against the end of the tube part and making a fluid tight
joint therewith.
Should any steam pass between the exterior of the steam nozzle f, and the interior
of the guiding nozzle f, it forms a part of that passing to the combining cone.
There is a tubular part fa, screwed on its exterior and screwing into the end of
the casing a, this tubular part fa, has a collar or shoulder fb, which when the part
is screwed fully in makes a fluid tight joint against the end of the casing a. In the
outer end of this tubular part f, through which the plain part of the spindle f¹,
passes, a stuffing box is formed and the packing material is compressed in the gland
by a part, which is forced inwards by a cap fd, screwing on the exterior of the
part fa, in which the stuffing box is formed. The outer end of the spindle f¹, has
a square upon it for a handle or hand wheel fo, for rotating the spindle f¹. It will
thus be seen that the spindle f¹, and end of the casing is made fluid tight.
There is an annular cavity ab, between the exterior of the tubular part f², and
the interior of the casing a, and steam from the boiler after passing the valve b,
can enter this annular space a", (see Fig. 2) and it can pass from this space through
a series of holes fd, in the tubular part 2, to the annular space a, between the
iuterior of the tubular part 2, and the spindle f, but while the valve f, on the
spindle 1, is shut as shown in Fig. 1, the steam cannot pass to the steam nozzle f
But when the spindle f¹, is screwed inwards the valve f, upon it opens, and
steam is then admitted into the annular space f8, inside the valve within the tubular
part 2, and between its interior and the exterior of the tubular nozzle f, and the
steam passes from this space through the holes f', into the steam nozzle f, and goes
into the combining cone and draws in water from the pipe d³, through the valve d².
The first and wide part of the combining cone g, fits fluid tight into a bored out
partition in the injector casing a, a shoulder g, at the smaller end of the bore
coming against the partition in the casing a, and round the exterior of the nozzle
there is a groove 92, into which the end of a screw 93, that screws through the side
of the casing a, can enter, this screw when screwed fully up being fluid tight (see
Fig. 2). The movable part of the combining cone or nozzle g, is formed with a
broad flange 9, at one end and a smaller flange 9, at the other end.
On its exterior it has a series of spirally formed ribs g', which are cylindrical on
their outer edges and fit and slide freely in a tube hereinafter described.
The ribs g', extend outwards where they are out of the tube and form a step to
act as a stop against the end of the tube when the movable part 9, of the combining
nozzle is at its greatest distance from the fixed part of the combining cone g, so
that there is always a free outlet for fluids from the tube which will assist to bring
the movable part 9, of the combining cone or nozzle to the position in which it is
shown in Fig. 1, when the jet is fully established.
The tubular part h, forming the guide for the movable part of the combining
cone g, and also the receiving and discharging cone ', is formed in one tubular
casting, having near its outer end a ring ², connected to the outer part of the
tube h, by webs 3, leaving with the exception of these webs an annular space *,
between the inside of the ring 2, and the exterior of the tube ', forming the
discharging cone.
This ring h², is screwed on its exterior to screw into the casing a, and there is a

page_text: shoulder h, on the exterior of the tubular part h, which comes against and makes
a fluid tight joint with a partition in the casing a.
This arrangement forms an annular cavity, between the exterior of the tube.h,
and the interior of the casing for overflow which passes to the branch a, and to the
pipe ad. There is an annular cavity h', between the exterior of the tube /', and
the interior of the casing a, to receive the fluid from the end of the discharging
cone ', which fluid then passes through the valve e, and valve c, and passages aª
and a, to the boiler.
The delivery end of the casing a, is closed by a screw cap a°, screwing fluid tight
into the end of the casing a.
All the screw bushes, screw caps, nozzles, which have to screw in, are made
with squares or flats for a wrench so that they may be screwed into their places.
Fig. 5, illustrates a modification applied to the steam nozzle end of the injector,
the other parts of which may be arranged and constructed as hereinbefore described
in reference to Figs. 1 to 4 inclusive.
In the modification illustrated by Figs. 1 to 4 inclusive the steam nozzle moves
towards and into the combining cone when the steam is admitted by screwing the
spindle f¹, inwards.
In the modification illustrated by Fig. 5, the steam nozzle is withdrawn from
the combining cone when the steam is admitted by screwing the spindle
outwards.
In this modification there is a tubular part f, with a guiding nozzle f³, for the
steam nozzle or cone f, and this tubular part 2, has a screwed collar 3,
upon it
that screws into the end of the casing a, and when screwed home a shoulder f*,
upon it makes a fluid tight joint with a partition in the casing. Between the
exterior of this tubular part 2, and the interior of the casing there is an annular
cavity ab, to which steam passes as explained in reference to the modification herein-
before described by reference to Figs. 1 to 4 inclusive, and there are holes fd,
through the sides of the tubular part, for steam to pass from this exterior annular
cavity to an interior one a, round the spindle f¹, the tubular inner end of which
forms the steam nozzle or cone.
On the spindle, a cone valve f, is formed having a seating in the tubular part f³,
and when the valve fe, is opened by screwing out the spindle f¹, steam can enter
an annular cavity f8, round the tubular nozzle and into its interior, through holes f³,
in its sides.
The spindle f¹, bas square screw threads, upon it that screw into the tubular
part f
The plain part of the spindle f¹, is packed by a stuffing box which is similarly
arranged and constructed to that hereinbefore described in reference to the
modification illustrated by Figs. 1 to 4 inclusive.
There is a handle fe, on the square on the outer end of the spindle having a.
pointing finger f', which points to an index which may be formed round the exterior
of the tube f, screwing into the end of the casing a.
Fig. 6, illustrates another modification of the steam nozzle end of an injector
according to our invention.
f, is a tubular part having a screwed collar f³, screwing into the end of the
casing a, when screwed home a shoulder f, upon the tubular part f2, makes a fluid
tight joint with a partition in the casing.
Between this tubular part f2, and the interior of the casing a, there is an annular
cavity a, into which the steam enters as before explained in respect to the modifi-
cation Figs. 1 to 4. The spindle f¹, is screwed and screws into the tube f, and
the inner end of the spindle forms a valve f, having its seating in the interior of
the tube, and round this valve f, there is an annular cavity a, into which steam
can enter from the cavity ab, by a diagonal hole a.
The inner end of the exterior of the steam nozzle f, is cylindrical and fits
the nozzle f, on the end of the inner end of the tubular part f³, and can slide
in and out of it. The outer end of the steam nozzle f, has a coarse pitched

page_text: thread f, formed on its exterior that screws into the hole in the end of the
spindle f¹.
The steam nozzle f, is prevented from rotating by the point of a screw j, screwing
through the side of the tubular part f³, and entering a slot in the lengthway of the
nozzle f.
"
Thus when the spindle f¹, is rotated to open the valve 6, and turn on the steam
(which passes into the cavity f, and through holes f, into the nozzle f) the
steam nozzle f, is screwed towards the combining cone g.
The plain outward end of the spindle f¹, is packed by a gland similar to that.
hereinbefore described in reference to the modification Figs. 1 to 4 and Fig. 5.
Fig. 7, is the longitudinal section of an injector according to another modification
of our invention.
The spindle f¹, for the steam nozzle screws into a casing a³, and the outer or
plain end of the spindle is packed by a stuffing box formed by the inner end of the
casing a, a washer a", and a screwed tube a', screwing into the end of the casing.
The outer end of the spindle f¹, has a square formed upon it for a handle or
hand wheel fe. That part of the casing for the spindle f¹, has the junction
branch a', upon it for the steam supply pipe and it has also a junction flange by
which it can be united by screws or bolts to a flange on the end of the other part a,
of the casing of the injector, which part has junction flanges a³, for the water
supply; a, for the overflow and a delivery from the injector.
There is a disc flat faced valve f, on the spindle 1, which is tubular on the
inner side of the valve f, and this tubular part f, is screwed at the end, so that
the steam cone or nozzle f, may be screwed into it fluid tight.
On the inner side of the valve fe, there are holes f, which allow steam to pass
from the outside to the inside of the tubular part f¹, of the spindle and thus to the
steam nozzle f. In the end of the second part of the casing a, there is a tubular
part terminating inwards in a nozzle f, round the exterior of the central steam
nozzle f, and in this tubular part f, there is a ring f' forming a guide for the
exterior tubular part of the spindle, this ring f', being connected by webs with the
interior of the tube f³, leaving an annular space f³, (excepting the connecting
webs) between the exterior of the ring f', and the interior of the tube ƒ³.
The large end of the tube f², fits tightly into the end of the casing a, and it has
a collar 3, that comes against the end of the casing and a shoulder on the end of
the casing a, comes against this collar f³, when the two parts at and a, of the
casings are secured together and thus keeps the tube f³, in its correct position in
the casing a.
The end of the tube 2, forms the seating for the valve f, on the spindle ƒ³,
and when the valve spindle f¹, is screwed outwards steam can enter the annular
space ƒ³, round the tubular part f³, of the spindle and pass from it through the
holes f, into the steam nozzle f.
Steam can also pass through the annular space f³, between the ring f', and
tube f³, and can escape from the small annular space, between the inside of the
nozzle of the tube, and the exterior of the steam nozzle f, and pass to and
combine with the water entering the combining cone g.
The end of the steam nozzle f, when the screw spindle f¹, is screwed in to shut
off the steam, is in the position shown in the drawing and when the spindle f¹, is
screwed outwards to admit steam, the nozzle f, is withdrawn more or less from the
combining cone g.
The fixed part of the combining cone 9, and the movable part 9, and the receiving
and discharging cones or nozzles ¹, are constructed and secured in the casing a,
a manner similar to those parts in the injector hereinbefore described and illustrated
by Figs. 1 and 2, the difference will be seen by inspecting the Figs. 1 and 2 and
comparing with Fig. 7.
The spindle, and its connected nozzles may be used combined with the
casing a, and casing a, and other parts of the injector hereinbefore described by:
reference to Figs. 1 to 4 inclusive.

page_text: 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, arrangement and construction of steam nozzles and actuating
mechanism substantially as herein before described and illustrated by Figs. 1, 2,
3 and 4, of the drawings also as herein before described and illustrated by Figs. 5,
6 and 7, of the drawings.
2. The combination, arrangement and construction of injectors, substantially as
hereinbefore described and illustrated by Figs. 1, 2, 3 and 4 of the drawings.
3. The combination and arrangement of injectors substantially as hereinbefore
described and illustrated by Figs. 1, 2, 3 and 4, of the drawings when modified by
substituting either of the steam nozzle combinations hereinbefore described and
illustrated by Figs. 5, 6 or 7 of the drawings for the parts having the same
functions in the modification illustrated by Figs. 1, 2, 3 and 4.
4. The combination and arrangement of parts forming an injector substantially
as hereinbefore described and illustrated by Fig. 7, of the drawings.
Dated this Twenty-second day of October 1895.
PETER J. LIVSEY,
Agent.