Improvements in Injectors or Apparatus for Feeding Steam Boilers or Generators and for Raising and Forcing Liquids for other : Purposes.
Year: 1887

page_text: Date of Application, 20th Apr., 1887.
Complete Left, 20th Feb., 1888
Complete Accepted, 6th Apr., 1888
Improvements in Injectors or Apparatus for Feeding Steam Boilers
or Generators and for Raising and Forcing Liquids for other :
Purposes.
We, EDWARD DAVIES of Plas Dinam, Llandinam, in the County of Montgomery,
Engineer, and JAMES METCALFE, of 47 North Parade, Aberystwith, in the County of
Cardigan, Engineer, do hereby declare the nature of the said invention to be as
follows:-
In the specification of Letters Patent No. 316 A.D. 1880, granted to Edward
Davies (one of the present applicants) improvements are described in Injectors or
apparatus to be worked entirely by what is commonly understood as Exhaust steam
from a steam Engine or Engines (or by steam which has performed a previous use)
these improvements in Exhaust steam Injectors being made upon others for which
Letters Patent were granted to Edward Hamer, James Metcalfe and Edward Davies
Numbered 591 A.D. 1876 and 4014 A.D. 1877, and in the said specification No. 316
of 1880, of the said Edward Davies improvements are also described in what are
therein termed "supplementary Injectors," namely, Injectors operated by "live".
steam direct from a boiler, or steam at high pressure compared with what is
commonly understood as exhaust steam from a steam Engine or Engines (or steam that
has performed a previous use) such supplementary Injectors so operated being.
combined with Injectors capable of being worked entirely by exhaust steam from a steam
Enginelor Engines.
The object of such supplementary Injector was to make an Injector worked by
exhaust steam capable of feeding steam boilers working at greater pressure than the
Exhaust steam Injector was alone capable of supplying with feed water.
The exhaust steam Injector described in the said specification of Edward Davies
No. 316 A.D. 1880, was automatic, that is, if the jet discharged was interrupted from
any cause, manipulation was not required to restart it to work, but it restarted
automatically as long as there was a supply of Exhaust steam and water.
But when the Exhaust steam Injector was combined with the supplementary
Injector the latter required to be manipulated, that is, the cocks or valves connected
with the overflow or outlet from the supplementary Injector and the supply of "live"
steam had to be opened and closed as required to restart the combined Exhaust and
supplementary Injector after its jet had been interrupted.
The object of our present invention is to make combined Exhaust steam and

page_text: supplementary "live steam Injectors both automatically restarting in case the
discharged jet is interrupted as long as there is a proper supply of steam and
water.
When a combined Exhaust steam and supplementary Injector stops working, that is,
ceases to force the jet of heated water into the steam generator to be fed, the flap of
the combining cone in the exhaust steam Injector or its equivalent opens, the valve
also at its overflow outlet also opens and the stop valve between the two injectors for
preventing the return of the fluid (when used as we prefer) shuts, and when the stop
valve between the injectors is not used, the stop valve between the supplementary
injector and the boiler shuts.
The pressure in the. "throat " or smallest part of the combining and discharging
cones of the supplementary injector is greatest when it ceases to work, as long as the
steam supply continues, and this pressure in the said "throat" is least when the
supplementary injector is properly at work feeding the boiler, the pressures in other
parts under the circumstances above named also varies, but the greatest difference
of pressure is at the said "throat."
Our invention consists in arranging so that the movements of one of the parts above
named or the changing pressures under the circumstances above mentioned are
employed to operate piston in a cylinder or diaphragm in a casing or a Bourdon
ring or other equivalent, the piston or diaphragın or their equivalents being connected
with a valve or valves (actuated separately or simultaneously) for turning on or off
the supply of steam, and opening or closing the outlet from the overflow of the
supplementary injector.
The arrangements for this purpose according to our invention may be varied, but
one arrangement for accomplishing our invention, which is or may be used, is as follows.
According to our present experience we prefer to arrange the supplementary
Injector with its axis in a vertical position and with the stop valve between the exhaust
and supplementary Injectors in the lower end of the casing for the latter.
This stop valve has a facing on both sides so that when shut it comes against one
facing or seating to close the passage between the Exhaust and supplementary
Injectors; and when fully open it covers the inlet to a small passage.
This small passage is connected say to the cylinder or casing at the upper side of
the piston or diaphragm, and there is another small passage in constant communica-
tion with the discharge from the exhaust steam Injector, and this last named passage
is made to communicate with the cylinder or casing at the underside of the piston or
diaphragm. The piston or diaphragm rod has or may have two valves or cocks upon
or connected with it, one fitting a seating to close the passage from the overflow of the
supplementary Injector, the other valve fitting a seating to close the steam supply
passage to the supplementary Injector.
There is also a small passage between the passage to the upperside of the piston or
diaphragm and the overflow outlet from the supplementary Injector to the
atmosphere.
If the combined Injectors have ceased working the stop valve is shut and the greater
pressure on the supplementary Injector side of the stop valve acts upon the upper
side of the piston or diaphragm to move the valves to shut off the supplementary
supply of "live" steam and open the overflow, then the greater pressure ceases to be
on the upper side of the piston or diaphragm and the pressure upon the underside
thereof then predominates and this allows the stop valve to be slowly opened and the
steam to the supplementary Injector to be gradually turned on and the overflow outlet
to be closed in like manner, thus starting the supplementary Injector to work to force
the passing jet into the steam generator to be fed with water.
When the stop valve is fully opened the small passage leading to the upperside of
the piston or diaphragm, is closed, and the fluid no longer passes to the upperside of
the piston or diaphragm and should there be any small leakage it passes through the
small passage to the overflow outlet, and thus the pressure on the underside of the
piston or diaphragm when the Injector is fully at work, acts to keep the overflow
outlet closed and the steam supply open.

page_text: A spring is or may be used to assist to close the stop valve.
Instead of the passage leading to the upperside of the piston or diaphragm which
is closed and opened by the stop valve, a communication is or may be formed between
the "throat of the supplementary Injector (or any other part where the pressure
varies under the circumstances hereinbefore mentioned) and the upper side of the
piston or diaphragm and when the jet is not being fed into the steam generator the
pressure will be greatest above the piston or diaphragm and will shut off the steam and
open the overflow outlet accordingly, and when the jet commences to work the
pressure at the throat has diminished to its minimum, and the pressure at the underside
of the piston or diaphragm then predominates and moves the valves in the reverse
direction accordingly.
In some cases we only employ the arrangements above described to act upon
the valve to open and closo the overflow outlet, the steam supply to the supplementary
Injector in such cases being constant.
In place of using the stop valve between the two Injectors to admit and shut off the
fluid which is to pass from the delivery of the exhaust injector to the cylinder or
casing at the upper side of the said piston or diaphragm for actuating the "live"
steam and overflow valves the pressure of the fluid from the "throat" of the supple-
mentary injector is made to act upon a small piston in a cylinder, diaphragm in a
casing, or other equivalent, which small piston, diaphragm, or equivalent is arranged
to operate two valves, or open and close two openings or ports, but so that when one
valve or opening is closed the other will be opened; one of these valves or openings
is for the admission, and the other for the emission of the fluid which is to pass from
the delivery of the exhaust injector to and from the cylinder or casing: at the upper
side of the said piston or diaphragm for actuating the live steam and overflow valves,
the live steam valve being closed by the pressure of the steam acting upon it, or by
the steam and a spring or otherwise.
When the jet from the combined injector passing to the boiler is interrupted, the
greater pressure which then arises at the " throat" of the supplementary injector acts
upon the said small piston or diaphragm and shuts off the fluid passing to the uppor
side of the said piston or diaphragm for actuating the overflow and live steam valves,
and the pressure of the steam or a spring acting therewith is then allowed to close the
valve, and when the pressure in the "throat comes to its minimum the said small
piston or diaphragm reverses the operation or allows the operation of the valves to be
reversed, and the then greater pressure admitted to the casing or cylinder to act upon
the upper side of the piston or diaphragm opens the live steam valve and closes the
overflow valve.
The cylinder or casing on the underside of the piston or diaphragm for the live
steam and overflow valves is open to the atmosphere or to the overflow outlet.
The supplementary injector used is or may be arranged either with the steam
central or water central.
We sometimes combine our exhaust and supplementary injectors so that the liquid
from the Exhaust steam injector passes through a heating arrangement of pipes, coils
or channels surrounded or acted upon by exhaust steam or heat from the boiler flue
before passing to the supplementary injector.
We have hitherto only referred to injectors capable of being worked by, exhaust
steam.combined with supplementary steam injectors but our improvements in the
combined injectors are useful for some purposes when designed for the use of live
steam in both injectors as in such case by our improvements hotter water may be fed
to them than to ordinary arrangements of Injectors.
Dated this 19th day of Anril 1887
PETER J.. LIVSEY,
Agent.

page_text: COMPLETE SPECIFICATION.
Improvements in Injectors or Apparatus for Feeding Steam Boilers
or Generators and for Raising and Forcing Liquids for other
Purposes.
We EDWARD DAVIES of Plas Dinam Llandinam, in the County of Montgomery,
Engineer, and JAMES METCALFE late of 47 now of 28 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:-
In the Specification of Letters Patent No. 316 A.D. 1880 granted to Edward
Davies (one of the present applicants) improvements are described in Injectors or
apparatus to be worked entirely by what is commonly understood as Exhaust Steam
from a steam Engine or Engines (or by steam which has performed a previous use)
these improvements in Exhaust steam Injectors being made upon others for which
Letters Patent were granted to Edward Hamer, James Metcalfe and Edward Davies
Numbered 591 A.D. 1876 and 4014 A.D. 1877, and in the said specification No. 316
of 1880 of the said Edward Davies, improvements are also described in what are
therein termed "supplementary Injectors" namely Injectors operated by "live" steam
direct from a boiler or steam at high pressure compared with what is commonly
understood as exhaust steam from a steam Engine or Engines (or steam that has
performed a previous use) such supplementary Injectors so operated being combined
with Injectors capable of being worked entirely by exhaust steam from a Steam
Engine or Engines.
The object of such supplementary Injector was to make an Injector worked by exhaust
'steam capable of feeding steam boilers working at greater pressure than the Exhaust
steam Injector was alone capable of supplying with feed water.
The exhaust steam Injector described in the said specification of Edward Davies
No. 316 A.D. 1880 was automatic, that is, if the jet discharged was interrupted from
any cause, manipulation was not required to restart it to work, but it restarted
automatically as long as there was a supply of Exhaust steam and water.
But when the Exhaust steam Injector was combined with the supplementary
Injector the latter required to be manipulated, that is the cocks or valves connected
with the overflow or outlet from the supplementary Injector and the supply of "live"
steam had to be opened and closed as required to restart the combined Exhaust and
supplementary Injector after its jet had been interrupted.
The object of our present invention is to make combined Exhaust steam and supple-
mentary "live" steam Injectors both automatically restarting in case the discharged
jet is interrupted as long as there is a proper supply of steam and water.
When a combined Exhaust steam and supplementary Injector stops working, that is,
ceases to force the jet of heated water into the steam generator to be fed, the flap of
the combining cone in the exhaust steam Injector or its equivalent opens, the valve also
at its overflow outlet also opens and the stop valve between the two injectors for

page_text: preventing the return of the fluid (when used as we prefer) shuts and when the stop
valve between the Injectors is not used the stop valve between the supplementary
injector and the boiler shuts.
"
The pressure in the "throat or smallest part of the combining and discharging
cone of the supplementary injector is greatest when it ceases to work, as long as the
steam supply continues and this pressure in the said "throat" is least when the sup-
plementary injector is properly at work feeding the boiler, the pressure in other parts
under the circumstances above named also varies, but the greatest difference of
pressure is at the said throat.
The combinations and arrangements of mechanism for carrying out the object of
our invention, which after numerous experiments we have found to give the most
satisfactory results, will be most readily explained and understood by reference to the
accompanying drawings.
The terms "Exhaust Steam" and "Exhaust steam Injector" and "live steam,"
and "supplementary Injector "will be hereinafter used in the sense hereinbefore
defined.
Fig. 1 is a longitudinal section of a compound Exhaust and supplementary Injector
according to our invention.
The exhaust injector is or may be formed in one casing a and with a casing a¹ joined
to it for a diaphragm and valve, and the casing for the supplementary injector is or
may be formed in one piece b united by flanges or otherwise to the casing (a) for the
Exhaust Injector and there is also another casing c for the live steam and overflow
valves which is shown separate from but united by flanges to the casing b but may if
desired be formed in one casting with the casing b.
In the exhaust Injector casing, a² is the junction for the exhaust steam pipe, a³ the
branch for the water supply, a' the junction or branch for the overflow, which branch
is or may be screwed into the casing a and is or may be arranged to form a water
seal as is well understood, as is the branch or junction for the delivery of the com-
bined steam and water from the exhaust steam Injector to the supplementary
injector.
d is the exhaust steam cone or nozzle, d' its central solid cone spindle, e the com-
bining cone for exhaust steam and water, a part el of which combining cone is made
to hinge at e and open and shut, the projection e³ from one side of the hinged flap
coming against the inside of the casing a when the flap e' is opened to the full
extent.
The receiving or discharging cone ef screws into a projection from the combining
cone and the two are prevented from unscrewing by a check screw f¹.
The lower end of the discharging cone is enlarged to form a chamber having
slots 2 in its sides to allow the combined water and steam to pass first into an annular
chamber, and then into the discharging branch a³.
The lower end of the exterior of the chamber of the discharging cone is screwed to
screw into the lower end of the casing a and to allow of the combining cone e to be
adjusted to and from the exterior of the exhaust steam cone d to adjust the water
supply, and there is a screw plug f³ at the lower end of the discharging cone chamber
for examining the interior of the nozzles and removing obstructions should there
be any
The parts above referred to and shown in fig. 1 forming the Exhaust steam injector
are ordinary parts and are well known.
Within the discharge branch there is a stop valve
of well known arrangement
carried in a casing inserted in the discharge branch for preventing the return of the
fluid which has once passed this valve, then comes the nozzle h for combined water
and steam which enters a cone i open to a chamber formed within the casing b
supplied with live steam-The steam and discharging cone of the supplementary
Injector are formed in one piece which is screwed fluid tight into a midfeather in the
casing for the supplementary Injector, as shown, from which casing there is a flange
or junction 6 for the pipe which is to convey the combined exhaust and live steam and
water to the boiler.....
....i

page_text: The casing b has passages. and junctions which form junctions with corresponding
passages for live steam and 63 for overflow in the casing c, in which casing seatings
are formed for a live steam and overflow valve and in this casing c a cylinder is bored
out for a piston which fits freely, and need not be perfectly steam tight in the said
cylinder.
The piston j, steam valve j', and overflow valve, are all upon the same rodj³ which
is guided in one part in a mid-feather formed between the live steam and overflow
passages 2 and 3 and by the piston in the said cylinder, and the overflow valve j
is screwed upon the end of the rod j³, as shown, access being given by a screw plug c
in the end of casing c.
The casing c, forms a junction by flanges with the casing a¹ in which there is a
cylindrical cavity for a diaphragm piston or disc plate k¹ which is on a rod or stem k²
sliding freely through a hole in a midfeather, the stem also passing through an orifice
in another midfeather having a valve seating formed in it for a cone valve ³ secured
by a screw nut to the end of the stem k² as shown.
There is a helical spring within the cylindrical cavity to act between the mid-
feather and disc or piston k¹ for the diaphragm, to close the valve k³ when not
otherwise acted upon.
On the outer end of the casing a¹ there is a diaphragm k formed of india rubber
or any other suitable elastic material the margin of which diaphragm is held by a
cover plate secured by screws to the end of the casing a'. A passage k is formed
in the casting a between the discharge passage as and the outer side of the
diaphragm k, the passage going through a hole in the margin of the diaphragm,
between the flanges, and then along a channel in the inside of the cover plate k so
that fluid can pass to the cavity between the cover plate ko and diaphragm k.
There is another passage c² formed in the casting c from one side of the overflow
passage to form a junction with the chamber k' between the two midfeathers in the
casing a¹, so that steam passing the valve ³ may go to the overflow passage b³.
We will now describe the operation of the mechanism.
The flap e¹ of the exhaust Injector is shown shut, as when working properly, the
stop valve g is shown shut, as when the exhaust injector is not working-The live
steam valve j and the diaphragm steam valve k³, are shown shut, and the overflow
valve is shown open, and whatever pressure there may be in the nozzles i and i¹ and
chambers connected therewith of the supplementary Injectors is free to escape at the
overflow outlet.
Assuming that the flap e¹ of the Exhaust injector has shut and that a pressure is
then formed it will open the valve g and pass to the diaphragm k and act upon it to
open the valve k³ and this will allow any live steam there may be in the chamber
between the valve k³ and the piston j to escape along the passage c² into the overflow
passage 63 so that the live steam in the passage 62 would then act to move the rod j³ to
open the steam valve j¹ and allow live steam to pass to the steam cone i and would
shut the overflow valve j2 and thus start the combined injectors to work, and as long as
the injectors continued properly at work the pressure on the diaphragm k would keep
the valve k³ open.
The piston is only an easy fit and has no tendency to stick fast and a small
quantity of steam will pass the sides of the piston or through a small hole j* provided
to allow steam to pass from the live steam passage 62 (from the boiler to) the
piston and to the chamber at the opposite side of it for the valve k³, and consequently,
as long as that valve is open, the small escape of live steam flows freely to the over-
flow passage ³, and combines with the fluid at the overflow in the chamber 64
of the supplementary Injector and thus its heating effect is not wasted and the
quantity is so small as not to interfere with the proper working of the combined
injectors.
Should the fluid jet fail from any cause, the stop valve g shuts the pressure acting
upon the diaphragm k becomes reduced or none, and the spring k¹ closes the valve k³
and prevents the steam from flowing through the passage to the overflow chamber b³,
then the live steam passing the piston j accumulates in the chamber of the valvė k³

page_text: and its pressure acts to move the piston j to shut the live steam valve j' and open the
overflow.
It will be seen that the piston j is of larger area than the steam valve, consequently.
the differential pressure acts to move the piston j to open the valve j', when the
steam pressure is prevented from accumulating in the chamber of the valve k³.
It will be seen that in this arrangement of apparatus there are no stuffing box
packing arrangements to prevent the free action of the valve, piston j, or rod j³,
and that the leakage of steam past the piston ; and past the rod j³, is not wasted but
flows to and combines with the fluid passing from the compound Injectors to the boiler.
Fig. 2 is a longitudinal section of a supplementary Injector combined with an
Exhaust Injector the lower part of the latter being only shown, this arrangement:
being a modification of that shown by fig. 1.
The Exhaust injector is the same as that illustrated by fig. 1, and the parts of the
supplementary injector are similar, or only differ from that shown by fig. 1 as herein-
after explained.
The steam and discharging cones i and of the supplementary Injector are screwed
into the casing b to form a chamber to receive the overflow from the "throat," at
which point there is a hole in the nozzle to allow fluid to pass from it to the.
chamber and connected with this chamber there is a pipe nipple for a union
coupling to secure one end of a pipe & the other end of which is secured to the flange
of the casing a so that this pressure from the "throat" of the supplementary
Injector can pass to the cavity between the diaphragm k and its cover plate k³.
The pipe, may, if desired, be connected directly with the "throat" of the supple-
mentary nozzles i and i dispensing with the annular chamber 64 in the casing b.
The outlet from the valve ³ may pass by a pipe to the atmosphere from the
chamber k'.
The live steam valve j¹ need not be a perfect fit or close the steam passage steam
tight when shut-The valve for the overflow is formed upon the end of the.
spindle and is coned as shown, so that when moved to shut the overflow, it
gradually closes the overflow outlet.
.:
In fig. 2 the parts are shown in the position with the overflow valve open, the
live steam valve is shut and the valve k³ is open, and the combined Injector is
supposed to have stopped working.
When the overflow valve is open the pressure in the. supplementary injector is
reduced to its lowest and the spring at that moment, will then act to close the
diaphragm valve k³ as then there is no pressure upon the diaphragın k, to counter-.
balance the pressure of the spring and open the valve, and when the valve k³ is thus
shut, the pressure of live steam leaking past, or passing through the small hole j*, in
the piston accumulates in the valve chamber k³, so as to move the piston j and open.
the live steam valve j¹ and close the overflow valve until the pressure rises in the
chamber communicating with the "throat" overflow and this acts upon tho
diaphragm k to open the valve k³ and allow the pressure to escape when the pressure
of the live steam acts upon the piston j to shut the live steam valve and open the
overflow valve; it will be seen that there is thus a reciprocating action given to
the piston j and connected valves, and the valve k³, which continues as long as the
combined injector is not working properly and passing the fluid jet to the boiler and
the speed of this reciprocating action depends upon the amount of leakage of steam
past the piston j, but the moment the fluid jet is fully established the pressure at the
"throat" of the supplementary Injector sinks to its lowest, and thus the pressure is:
taken off the diaphragm k the spring & having then sufficient elasticity to force back the.
k4
diaphragm k and close the valve k³, and thus allow the steam to accumulate in the
chamber and move the piston j to open the live steam valve j¹ and shut the overflow
valve and hold them so open and shut respectively, as long as the pressure at the
throat remains at its lowest normal pressure as when the jet is established and the
combined Injector is properly working.
It will be understood that in the modifications shown by figs. 1 and 2 pistons may,
be substituted for diaphragms, but we prefer the latter..

page_text: Fig. 3 is a longitudinal section of a compound Exhaust steam and supplementary
Injector illustrating another modification of our invention applicable where the live
or supplementary boiler steam comes in the centre of the jet and is introduced by a
nozzle passing through the exhaust steam nozzle.
The parts of the Exhaust steam injector are as hereinbefore described and illustrated
by fig. 1 with the following exceptions.
There is the ordinary overflow orifice at the end of the hinged flap e¹, then a short
receiving cone fx formed in a tubular part f* that is screwed into the projection
from the exhaust combining cone (e).
Within the part f* there is another receiving or discharging cone f screwed, as
shown, inserted through the hole for the screw plug f³ at the end of the part 4.
Between the second receiving cone'f and the first short receiving cone fx there is an
overflow space or orifice, and the overflow fluid can pass into the chamber surrounding
the second nozzle fand out through slots f in the sides to an annular cavity fe
formed between the part f4 and the inside of the casing a.
From this annular chamber there is a passage to the overflow outlet valve.
There is also a passage from the overflow chamber of the combining nozzle e to an
overflow outlet valve.
The combined fluid jet escapes as usual through slots f² in the part finto an
annular chamber between the casing and the part f* and then passes out at the
discharge branch a³.
The nozzle 3 for the live steam is screwed into a branch from a passage 62 formed
in a casing a jointed by flanges to the end of the casing a, and the live steam comes
along a passage also. marked 62 formed in the side of the casing a from the live
steam supply passage (also marked 62) formed in the valve casing c which is secured
by flanges and screws to a facing formed on the side of the casing a the passages in
the valve casing c forming a junction with those formed in the casing a for live
steam and overflow.
The live steam pipe is joined to the casing c and the steam after passing the
valve goes through the passages (62).
The fluid from the exhaust overflow goes along the passage 3 then through the
overflow valve j and valve 2 to the outlet.
The second overflow has its passage to the valve and past it to the outlet.
The valve casing c has five cylindrical openings all in the same axial line, and
there is a spindle or rod j³ with two pistons and three piston like valves formed or
secured upon it.
The live steam valve is a disc screwed upon the end of the spindle or rod j³ and
it can partly enter the hole for it in the casing c and when within the hole it fits it
(but need not be perfectly steam tight) and practically closes it and prevents the
passage of steam except a slight leakage owing to its easy fit.
Next to the live steam valvej¹ on the rod there is a piston ; which fits as near as
possible the cylindrical hole for it in the casing c. It is perfectly free to move, but
need not be necessarily steam tight.
The valve disc jt next to the piston j fits the hole for it in the casing e as explained in
reference to the live steam valve j¹ and the valve is slightly coned, so as when moved
to close the opening in the casing c to gradually reduce the area of the orifice for the
escape of fluid until it entirely shuts the opening fluid tight. The piston or head .
on the lower end of the rod is guided in a bush screwed into the casing c, as shown,
and against its end a diaphragm n comes, the margin of which is secured fluid tight
against the casing c by a cover plate ct secured by screws.
There is a passage as formed, as shown, between the annular discharge chamber a
from the exhaust injector and the outside of the diaphragm n, so that the
fluid from the discharge chamber acts upon the piston or disc jo, end of the rod j³,
pressure of
to move it to close the two overflow valves and 4 and open the live steam
valve, and the pressure of the live steam acts to move the valve rod in the
contrary direction.
The live steam valve disc j! is the smallest in diameter, the piston j is a little.

page_text: larger, the disc valve for the first overflow is a little larger still, and the disc for
the second overflow and for any leakage past the valve j* when closed is the largest
in diameter.
There is or may he a screw plug c¹ in the casing to give access to the live steam
valve j¹.
In a compound exhaust and supplementary live steam Injector arranged as shown
in fig. 3 the jet of fluid put in motion is or may be so hot that an ordinary overflow
outlet valve would not close, as the hot jet would produce pressure above that of the
atmosphere rather than a partial vacuum as in the ordinary Injector worked by
exhaust steam only and the object of our invention as illustrated by the modification
shown by fig. 3 is to first give a free outlet for starting the fluid jet into motion,
then to gradually close the outlet from the first overflow and lastly entirely close
the outlets from both the first and second overflows when the jet has been fully
established.
As before said the pressure of the live steam acts to close the valve passage for live
steam and open the overflow outlet valves and this will be the position of the valves
when there is not sufficient pressure in the injector nozzles.
When exhaust steam and water is turned on pressure is formed in the chamber a
and the diaphragm n is then acted upon to move the rod j³, and cause the lower edgo
of live steam valve j¹ to partly uncover the live steam valve orifice, this adds greater
pressure and then the rod 3 is moved still further to open the live steam valve and
close the overflow valves, but the overflow valve is first closed and lastly the second
overflow valve 2 is closed, fluid tight when the jet is fully established.
Should the fluid jet fail the pressure on the diaphragm n sinks and the pressure of
the live steam shuts it and opens the overflow, and the starting movements of the
diaphragm n and valves operated thereon are repeated as explained.
Any slight leakage of live steam past the piston ; passes to the fluid jet at the over-
flows and does not interfere with the proper working of the injector. d² is an ordinary
throttle valve.
Fig. 4 is a longitudinal section illustrating the application of the diaphragm n
and connected valve arrangement to operate a live steam and overflow valve for a
supplementary injector when such supplementary live steam injector takes the fluid
jet after passing through an Exhaust Steam Injector which is or may be the same as
that shown by fig. 1 but is not shown in fig. 4.
In this modification of our invention the casing for the valve and that (b) for the
nozzles of the supplementary live steam injector are shown as one casting.
his the nozzle which receives the fluid jet from the exhaust injector i the steam
cone, the overflow orifice between the steam cone and the discharging cone and 64
the overflow chamber, 63 passage from overflow past the overflow valve to the out-
let, the passage for live steam through the valve j¹ to the chamber round the live steam
nozzle, c is a screw plug in the casing b to give access to the live steam valve j',
n diaphragm to act upon the piston or disc end je of the valve rod j³, as is a passage
formed in the casting from the chamber at the delivery end of the cone through a
hole in the margin of the diaphragm n to the cavity between it and the cover plate c¹
secured by screws to the casing.
The diaphragm n and connected valves are shown in the position they occupy when
the jet through the combined injectors is fully established, that is with the live steam
valve j¹ open and the overflow valve j² shut.
The automatic arrangements herein before described and illustrated by figs. 1, 2, 3
and 4 for operating both the live steam and overflow valves may be used for actuating
the live steam valve only, if desired, the overflow valve or outlet being in such case
controlled by a separate arrangement, or the said automatic arrangements are or may
be used for operating the overflow valves j and 2 only, when a live steam valve is
not used.
Fig. 5, is a longitudinal section illustrating a modification of our invention where
the live steam valve is actuated by the stop valve between the exhaust and

page_text: supplementary Injectors and the overflow outlet for starting the injector is actuated
by a diaphragm operated upon by pressure from the throat at the nozzles of the
supplementary Injector.
The exhaust injector is the same as that shown in fig. 1. The casings for the stop
valve g and live steam valve or valves, and passages for live steam, and combined
exhaust steam and water and for the supplementary injector passages and
overflow valve mechanism, are or may be formed and constructed and united
together by flanges, as shown, and which will be readily understood by inspecting the
figure.
The stop valve g is arranged in the casing in a passage for the discharged fluid
from the exhaust injector with the axis of the valve parallel to the longitudinal axis
of the Exhaust Injector.
The valveg is an ordinary stop valve with guiding wings and it opens when the pressure
of the fluid in the Exhaust Injector is sufficient to lift it, and it closes, by its gravity
(when arranged so to act) and if required by the assistance of a spring, and any back
pressure in the supplementary injector, when the pressure of fluid in the Exhaust
injector becomes insufficient to keep it open.
When the stop valve g is shut there is a slight clearance between it and the end of
a spindle guided in a part c*.
The upper end of the spindle 12 has a small cone valve 1 formed upon it, which has
a seating formed for it in a cap valve which latter has a seating for it formed
on a midfeather in the casing, a screw plug c³ in the casing giving access to the
valves.
On the spindle 12 of the small valve 1, within the cap 1, there is a small collar 13
secured which has or may have projecting wings on the sides to guide the cap valve l¹
and form spaces for steam to pass from the small valve between the collar and cap
valve when the small valve is lifted.
The projections on the upper side of the collar 13 do not come against the underside
of the cap valve until the spindle 12 has lifted a short distance.
There is also another collar 14 secured on the valve spindle 12 which forms a stop,
when its upper face comes against the end of the boss for guiding the spindle 12, to
limit the lift of the stop valve g, and this collar when so acting as a stop also acts
to prevent a leakage of steam past the spindle 12, but should there be any little leakage
of steam this will not affect the proper working of the supplementary injector.
The live steam comes along the passage through the valve and valves and
along the passages also marked 2 after leaving the valves to the steam cone i of the
supplementary injector.
12
There is a hole 22 at the "throat" of the nozzles i and of the supplementary
injector opening into a chamber * in the casing b, which communicates by a pipe m¹
(or a passage may be used instead, formed in the casings) with one side of a
diaphragm m which acts upon a piston or disc plate m² connected with a spindle m³
from it which disc or piston plate is acted upon by a spring m¹ to close the valve m³
screwed upon the end of the spindle m³ as shown, this valve m³ having its seating
formed on the casing me to which access is given by the serew plug m'.
The action of this compound Injector is as follows.
When there is no fluid pressure in the nozzles of the injectors the movable parts
are in the position shown, and when the exhaust injector gives sufficient fluid
pressure, the stop valve g lifts, and it can readily overcome the pressure of the live
steam acting to close the small valve i owing to the smallness of the area of that
valve and thus at first a small quantity only of live steam is turned on, and this
and the pressure of fluid from the exhaust injector forms a pressure in the "throat
and chamber 6 for the throat of the supplementary Injector nozzle, this pressure
passing through the pipe m¹ (or any suitable passage), to the diaphragm m to act
upon and open the overflow valve m.
"9
But it should be noted here that the fluid pressure alone from the exhaust
injector can pass the stop valve 9 before the live steam is lifted as it can open

page_text: g
slightly before lifting the small live steam valve and thus fluid pressure sufficient
to act upon the diaphragm m to open the overflow valve m³ is obtained before the
live steam adds to the pressure. As the flow of the fluid passing the stop valve
increases, it is lifted to its full extent when the live steam cap valve ¹ is opened
as well as the small valve and this gives the full supply of live steam, and when
the jet begins to be fully established through both Injectors, the pressure at the
"throat" of the supplementary injector sinks to its lowest working pressure which
acting upon the diaphragm m is insufficient to prevent the then superior pressure
of the spring m froin closing the overflow valve m³ the pressure of the fluid upon
the overflow valve also acting to close it.
When the jet ceases to work properly the pressure rises to its highest at the throat
of the supplementary nozzles and the stop valve g and live steam valves and shut
and then the overflow valve m³ will shut when the fluid pressure in the throat of the
supplementary Injector sinks so as not to be able to counteract the spring m* which
thus acts to close the overflow valve.
Instead of the diaphragm m a piston may be used but we prefer the diaphragm.
The stop valve (9) may also be arranged in the delivery branch from the Exhaust
injector with its axis at a right angle to that of the longitudinal axis of the exhaust
injector and one arm of a bell crank lever may be connected to move with the stop
valve which may be assisted to close by a spring the other arm of the bell crank lever
is arranged to act upon the spindle (12) for actuating the live steam valves and 1.
Fig. 6 is a longitudinal section of a compound exhaust and double live steam
injector.
The exhaust part of the Injector is the same as fig. 1 with the exception that there
is a central live steam nozzle within the Exhaust steam cone d the bore of which
nozzle is of very small area having a throat a distance back from its discharging
end and from this narrow or "throat" part it expands as shown.
It will be seen that the live steam from this central nozzle discharges within another
nozzle screwed upon the end of the live steam branch supply pipe a³.
This second live steam nozzle has slits or openings ³ in its sides communicating
with the space for exhaust steam in the exhaust steam nozzle d.
The auxiliary steam nozzle i extends below the exhaust steam nozzle & into the
combining cone e and the bore of the auxiliary steam nozzle is parallel for a part
of its length at its discharging end as shown.
In this arrangement and form of central live steam nozzle 3 and auxiliary nozzle 4,
the live steam first acts to draw in the exhaust steam and add to its velocity and thus
partly mixes with the exhaust steam before it comes in contact with the water to
be propelled.
A good result is obtained with the exhaust injector as shown by fig. 6 without the
supplementary live steam injector in the casing b which is shown combined with the
compound exhaust and central jet live steam injector in the casing a and aº, as will
be understood by inspecting the drawings from the explanation of the figures
hereinbefore described.
The overflow or starting valve m³ is shut by a spring m and the pressure of the
fluid acting upon the valve me, and it is opened by the pressure of the fluid from the
throat of the supplementary live steam injector acting between the cover plate m*
and the diaphragm m by flowing along a passage m' from the overflow chamber 64 to
the outside of the diaphragm m.
When the valve m is opened to its full extent the boss of the diaphragm disc m²
rests or may rest upon a seating on the midfeather m³ to prevent fluid from passing
to the under side of the diaphragm m but this is of no importance as the hole m³
allows all fluid that may enter to pass out through it.
The overflow passes out of the casing me at b³.
The parts are shown in the position they occupy when the compound injector is
properly working, as then there is the least pressure in the overflow chamber band
the spring m and pressure of the discharged fluid acting upon the overflow valve m³..

page_text: keep it closed, but when the injector ceases to work the pressure in the chamber ¿ª
increases and acts upon the diaphragm to open the valve m³.
Fig. 7 is a longitudinal section of another arrangement of supplementary injector
supposed to be combined with an Exhaust steam injector partly shown.
The overflow valve m³ in this case communicates with and is acted upon by the
pressure of fluid in the overflow chamber 64 which tends to open it with the assistance
of the spring in which is or may be used.
The diaphragm m is of such area that when the injector is working properly the
pressure from the delivery b¹ (or from the live steam passage if preferred) passing
through the pipe m¹ and acting upon the diaphragm m will counteract the pressure in
the overflow chamber 4 (which is then the least) tending to open the valve m³, and
when the injector fails to work, the pressure in the chamber is greatest and acts
upon the valve m' to open it against the pressure upon the diaphragm m and
spring m
Fig. 8 is a longitudinal section of a supplementary injector, combined with an
exhaust steam injector like that shown by fig. 1 which is partly shown in fig. 8 and
fig. 9 is a cross section at A. B fig. 8.
The steam nozzle i of the supplementary is formed in two parts one i secured in the
casing b, and the other part screwed into a part forming the receiving and
discharging cone i¹.
The last named parts have two enlargements which fit so as to slide freely in the
hored out interior casing b.
The enlarged discharging end of the discharging cone i forms a piston or guide.
boss to slide in the bore of the casing b another enlargement 7 has projections
(see fig. 9) to fit the bored out casing and act as guides to keep it central and the disc
face of the enlargement forms a valve when close against a seating 65 formed in the
casing as shown in fig. 8.
That end of the part of the steam coneix which is movable, is also enlarged as
shown to form a disc and comes close against a seating on the disc part of i when
the injector is working properly but leaves a cavity between the part i and i* into
which the fluid can enter when the jet ceases to work properly.
There are projections" on the back side of the disc to act as stops, when they
come against the shoulders on the casing b, to the end movement of nozzle i* from the
nozzle i.
It will be seen that the pressure of the fluid discharged acts upon the piston like
enlargement to keep its face against its seating and the disc face against its
seating on the disc of i and when the jet fails its pressure gets into the cavity between i
and and acting then on a greater area than that of the valve or piston part forces
apart the nozzles i and i* and allows the fluid to pass out at the overflow b³ and past
the valve .
There is or may be an elastic washer or ring to come between the face of the piston
or valve face and its seating 65 to give a slight elasticity to ensure that both valve
facings and are against their seatings.
Or a thin elastic washer of metal is secured to the seating face of the disc
valve the margin of which elastic washer comes against the seating 65 when
shut and its elasticity allows the other valve to come closer against its
seating.
The margin of the elastic washer will be pressed firmly against the seating by the
pressure of the fluid (passing freely through the hole 1 in the enlargement )
discharged from the injector at 61 when working properly..
Fig. 10 is a longitudinal section of a compound Exhaust and supplementary live
steam Injector.
The exhaust injector in casing a has two overflows, that is, it has the ordinary
Exhaust overflow and another.
The two overflow orifices are arranged similarly to the two shown in fig. 3 except
that the outlet from the ordinary exhaust overflow from a is allowed to escape through

page_text: a valve p actuated by a diaphragm p¹ the fluid pressure acting negatively or positively
upon the diaphragm is conveyed by a pipe p² or passage from a chamber e in
communication with the interior of the nozzle e, in and between the exterior of the
exhaust combining cone e and the interior of the casing a to the cavity between the
cover plate p³ and the diaphragm pl which is attached by a washer and screw to
the stem of the valve p which is guided in its movements as shown-When the
injector is working properly a partial vacuum is formed in the cavity on the back of
the diaphragm p¹, and the pressure of the fluid in the overflow passage (which may
be below or above the atmospheric pressure) can act under the diaphragm p¹ and on
the upper side of the valve p and the pressure of the atmosphere on the underside of
the valve p acts to close it being assisted by the partial vacuum on the upperside of
the diaphragm p¹."
When the jet fails the partial vacuum on the upperside of the diaphragm plis
destroyed and the greater pressure then in the overflow passage opens the valve p and
allows the fluid to pass out.
The second overflow, between the nozzles fx and fis formed by an arrangement of
parts similar to that shown in fig. 3 and this overflow can enter a chamber from
which there is no outlet, this chamber f being connected by a pipe or passage p³ with
a diaphragm m of the valve m³ arranged in other respects same as that for the
overflow of the supplementary injector shown by fig. 6.
The supplementary Injector shown by fig. 10 has two live steam nozzles i and ¿¹³ to
which there is a constant supply of live steam which in both cases acts on the exterior
of the fluid jet from the exhaust injector.
The arrangement of these nozzles of the supplementary injector will be readily
understood from the previously described examples by inspecting the figure, 62 being
the junction for live steam.
Fig. 11 shows a supplementary live steam injector also with two constantly supplied
live steam nozzles 3 and i but it will be seen that the first live steam nozzle 3 is
central and the other at i is on the exterior of the liquid jet.
It will also be seen that the water cone q is screwed in projections from the
steam cone i which has slits q¹ in its sides to allow the live steam to pass to the steam
cone i..
The overflow valve m³ is arranged same as that shown in fig. 6.
Fig. 12 is a longitudinal section of an Exhaust steam Injector with two live steam
nozzles one live steam nozzle in the centre of the Exhaust steam cone, and the other
supplying steam on the exterior of the liquid jet after it has left the combining cone
both live steam nozzles have a constant supply.
её
The central live steam nozzle and auxiliary nozzle are arranged within the exhaust
steam nozzle d as shown in fig. 6.
There is an ordinary overflow outlet a from the exhaust-The discharge from the
combining cone e enters a nozzle f7 screwed into a projection from the combining
cone e, and the cone 7 enters a cone i.
There are slits es that allow live steam to flow from a passage 6² which supplies
steam to both live steam nozzles.
Between the nozzle
chamber 64.
and there is an overflow space 2 and an overflow
a is the outlet branch for the fluid to the boiler.
The overflow outlet in the modification fig. 12 is controlled by a valve'm³ and
diaphragm same as that shown in fig. 7.
Fig. 13 is intended to represent an injector same as that shown by fig. 12 but with
the overflow taken from the casing after the fluid has passed through all the nozzles and
with the overflow valve m governed by the fluid pressure at the throat by a diaphragmi
arranged as in fig. 6.
Fig. 14 illustrates another mode of controlling the overflow from a combined
exhaust and supplementary Injector-The fluid after passing all the nozzles of the
injectors leaves through a passage a¹¹ and stop valve g¹.

page_text: The passage a branches into one where there is a large cone valve r on one end of
a stem, upon the other end of which there is a small valve »².
The small valve 2 comes into the passage a5 for fluid which has passed the stop
valve g¹ going to the boiler.
and are screw plugs in the casing to give access to the valves.
?"
It will be seen that the large valve r is open and that the fluid can escape at the
overflow the boiler pressure acting upon the small valve 12 is constant and tends to
shut it and open the large valve r but when the pressure of the jet is established and
is sufficient to open the stop valve gl and pass to the boiler it acts on the greater area
of the large valve r to close it and the overflow outlet 63 against the boiler pressure
acting upon the smaller area of the valve -The overflow valve r when closed also
prevents the passage of fluid past the stem r¹.
Fig. 15 illustrates another overflow or starting valve governed by a stop valve gl
acted upon by the pressure of the fluid in the boiler which is being fed-This
arrangement of stop valve is combined with Exhaust and supplementary injectors
whether the live steam supply is constant or is governed by automatic mechanism.
It will be seen that the stop valve g¹ is on a stem ¹ sliding freely in a guiding boss
formed within the casings in which there is a seating for the stop valve g¹ and also
a seating for a small valve loose and free to slide on a reduced part of the stem l
of the valve g¹, the small valve r being retained by a screw nut 7 on the end of the
stem.
.
2"
63 is the overflow outlet, is a screw nut plug to give access to the stop valve g¹,
61 is a branch to the boiler.
As long as the jet is established and the fluid from the injectors is passing to the
boiler the stop valve g₁ is open, and the screw nut is drawn against the end of the
small valve to keep the overflow outlet 63 closed, but if the fluid ceases to pass to
the boiler, the fluid pressure in the boiler closes the stop valve g¹ and then the small
part of the stem slides through the small valve › until its shoulder comes against and
opens the small valve r to let the fluid pass out at the overflow b³.
Fig. 16 is a longitudinal section of an Exhaust and supplementary live steam
Injector, the exhaust injector is only partly shown, and may be an ordinary Exhaust
Injector or one similar to that shown by fig. 10.
b is the casing, b² junction for live steam, 63 overflow passage, 64 overflow chamber,
6 junction for delivery to boiler, nozzle receiving fluid from the exhaust injector,
i steam nozzle, ¹ discharging nozzle, 22 overflow orifice in nozzles, 12 other overflow
orifices.
In the casing there are seatings for two overflow valves, one it is upon the end of
a rod, and the other 2 is also upon the rod -The valve is a disc and fits the hole
for it but need not be fluid tight, the other valve 2 when closed shuts close against its
seating.
The rod has a piston or disc jo screwed upon it, and is arranged to slide and be
guided in a hole in the casing as shown.
There is a cap screwed over the piston, as shown against which a diaphragm n comes,
the margins of which are secured against the end of the casing by a cover plate c
and the cavity between the diaphragm n and cover plate c* is made to communicate
by a pipe with the Exhaust Injector at or near some point near its throat as in fig. 10
sheet 5.
On inspecting fig. 16 it will be seen that the overflow chamber b₁ communicates
with the outlet of the valve it and that there is a passage from the casing at the
discharge end of the cone i¹ having its outlet through the valve through which valve
the fluid from the valve jt also passes.
Both overflow valves j and 2 are shown shut, as when the injector is working
properly, as then the pressure of fluid in the exhaust injector, near its throat, at which
point the pipe from the diaphragm is connected is at its lowest, and acts with little or
no pressure upon the diaphragm n, consequently the pressure of the atmosphere
entering through the outlet passage acts upon the inside of the diaphragm n and holds

page_text: the valve 2 shut and the valve closed (the pressure acting upon the inner side of
the overflow valves also assists to close them) but when the jet ceases to pass to the
boiler the pressure on the outside of diaphragm n is then in excess and opens the
valves and but first opens the valve j and then the valve j*, and in starting
the injectors to work when tho jet is established the valve j is first shut and then the
valve j².
The extra overflow orifices (fig. 16 may also be used if desired, in the nozzles of
the supplementary live steam injectors, in the modifications illustrated by figs. 1, 4,
7 and 12, and in the second live steam injector fig. 18.
Fig. 17 is a longitudinal section of a double live-steam injector according to our
invention designed for supplying boilers with very hot water.
The live steam supply to the first injector is constant, and that to the second is
controlled by a valve which acts automatically and the arrangement of this valve, and
the stop valve which actuates it, and also the arrangement of the overflow or starting
valve is similar to that hereinbefore described and shown by fig. 5.
a is the casing for the first live steam injector, d the steam nozzle, e the combining
cone, the discharging cone, a³ the water branch, 2 the live steam passages to the
steam cones d and i in both injectors the nozzle i being a central steam nozzle, g is
the stop valve, 12 spindle acted upon by the valve g, cx boss to guide spindle 12;
14 and 13 collars on spindle 12; small and large steam valves; discharging cone
in casing b, overflow orifice in nozzle, 64 overflow chamber, 61 junction to boiler,
m³ overflow valve, m³ its spindle, m diaphragm, m¹ passage from 6 to outside of
diaphragm m, m2 disc and m spring, which in some cases may be dispensed with.
Where the hole m' in the casing (see fig. 6) is not shown it may be used, or the
spindle m³ is made free in the midfeather through which it passes to allow air.
to pass.
In starting the injector a jet will first be established through the injector nozzles
to the overflow at 63 by the constantly acting live steam in the first injector, then the
second central live steam supply to the nozzle i will be gradually turned on by the
automatic action of the stop valve g upon the two live steam valves / and 1.
When the injector stops working the steam to the nozzle i will be automatically
shut off.
The first live steam injector in casing a of fig. 17 may have an overflow at the
« throat," between e and f, and an outlet therefrom, as in ordinary live steam injectors,
and in this case either of the arrangements of live steam injectors and connected valve
mechanism, shown by figs. 1 and 2, are or may be applied to, and combined therewith,
in place of the second live steam injector and connected valve mechanism, shown
in fig. 17.
Fig. 18 is a longitudinal section of another modification of double live steam
injector; in which the nozzles and valve mechanism are all in one casing a a³ branch
for water, 62 live steam passages, 63 overflow passage, d first live steam nozzle in the
centre having a constant supply, e cover plate in which the steam passage is formed,
the combining cone, and discharging cone, i second live steam cone supplying
steam to the exterior of the fluid jet, this steam being automatically controlled.
overflow orifice, & overflow chamber, 63 overflow passage i discharging cone of
second live steam injector, 6 delivery to boiler, j¹ steain valve, j piston on rod j³,
2 overflow valve, je disc or boss on the end of the rod j³, n diaphragm, c¹ cover plate,
a passage between the casing at the discharge end of the nozzle ¹ and n the
diaphragmn.
The diaphragm n, rod j³ and valves ; and are arranged and operated as herein-
before described in reference to figs. 3 and 4 and as shown by fig. 4 of the drawings.
The action of the combined live steam injectors is the same as that shown by
fig. 17.-The live steam constantly flowing into the nozzle d, first establishes the jet
through the overflow 63, then the pressure of the jet thus established acts through the
passage a³ upon the diaphragm n first to slowly open the steam valve j¹, and lastly to
close the overflow valve j².

page_text: Stops worth over now valve
urst opens and then the
steam valvej shuts.
The live steam injector in casing 6 of figs. 8 and 9 is or may be substituted in some
cases in place of the second live steam injectors shown in figs. 17 and 18.
Fig. 19 is a longitudinal section showing a combined Exhaust steam injector, and
a supplementary live steam injector, with arrangements for heating the jet while
passing from one injector to the other.
The Exhaust Injector is the same as that shown by fig. 1 and the supplementary
live steam injector is similar to that shown by fig. 6.
.
But we do not confine ourselves to the particular construction of the exhaust steam
or supplementary Injectors which may be varied as this part of our invention consists
in heating the current or jet while passing between the two Injectors by any suitable
arrangement of pipes or apparatus which heating pipes are exposed on their exterior,
when the water is in their interior, and on their interior, when the water is on the
exterior, to the action of the surplus exhaust steam or waste heat from flues..
As illustrated the jet from the exhaust injector is passed through a coil of pipes t to
the supplementary injector this coil of pipes being enclosed in a chamber t¹ through
which the surplus exhaust steam is made to pass.
The exhaust injector may be placed say on a Locomotive at any convenient part
and then a pipe from it is or may be taken to a coil in the smoke box exposed to the
waste heat therein and the pipe then passes to the supplementary Injector.
We wish it to be understood that by the term Exhaust steam Injector we not only
include such Injectors where the cone for combining the exhaust steam and water is
made with a hinged flap to allow a free outlet for fluid in starting the jet to work but
any equivalent arrangements to the hinged flap cone having the same object.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is,
1. In Exhaust steam and supplementary live steam injectors, the use of a
diaphragm or piston for actuating a valve which allows steain to escape, when the
live steam valve is to open, and prevents its escape when the live steam valve is to
shut (as herein before described in reference to fig. 1) and which valve in another
modification allows steam to escape when the live steam valve is to shut and prevents
its escape when the live steam valve is to open (as hereinbefore described in reference
to fig. 2) substantially as hereinbefore described and illustrated by figs. 1 and 2.
2. In exhaust steam and supplementary live steam Injectors, the use of a diaphragm
or piston for automatically actuating both the live steam valve and overflow or
starting valve, substantially as hereinbefore described and illustrated by figs. 1, 23
and 4 of the drawings.
3. In combined Exhaust steam and supplementary live steam injectors the arrange-
ments and combinations of automatic mechanism for actuating the live steam valve
substantially as hereinbefore described in reference to figs. 1, 2, 3 and 4 of the drawings.
4. The combinations and arrangements of combined automatic Exhaust steam and
supplementary live steam Injectors substantially as hereinbefore described and
illustrated by figs. 1, 2, 3 and 4 of the drawings.
5. In combined Exhaust steam and supplementary live steam injectors, the two
overflows both automatically controlled from the same diaphragm or piston, sub-
stantially as hereinbefore described and illustrated by fig. 3 of the drawings.
6. In automatic exhaust steam and live steam injectors, and also in live steam
injectors where two or more are combined together the arrangement and mode of
actuating overflow or starting valves (3 or jor both 2 and 4) by a diaphragm or
piston, substantially as hereinbefore described and illustrated by figs. 3, 4, 16 and 18
of the drawings.
7. The controlling of the live steam and overflow outlets by discs ( and j*) which
can enter freely and practically close the passage for fluid without being necessarily

page_text: fluid tight substantially as hereinbefore described in reference to figs. 2, 3 and 4 of
the drawings.
8. In Exhaust steam and supplementary live steam injectors the arrangement of the
live steam valve without stuffing box or boxes and taking any little steam that escapes
past the valve rod when the jet is established to the passing jet substantially as herein-
before described and illustrated by figs. 1, 2, 3, 4 and 5.
9. In Exhaust steam and supplementary live steam Injectors having two overflow
outlets closed automatically by a diaphragm or piston, the closing of one overflow
outlet before the other substantially as hereinbefore described and illustrated by
figs. 3 and 16 of the drawings.
10. In compound exhaust steam and supplementary Injectors the use of the stop
valve (9) for controlling the live steam valve or valves substantially as hereinbefore
described and illustrated by fig. 5 of the drawings.
11. The combination and arrangement of the parts of an Exhaust steam and supple-
mentary live steami injector substantially as hereinbefore described and illustrated by
fig. 5 of the drawings.
12. In Exhaust steam and supplementary live steam Injectors automatically
actuating an overflow or starting valve (when such valves are actuated separately) by
a diaphragm or piston substantially as hereinbefore described and illustrated by
figs. 5, 6, 7 and 8 of the drawings.
13. The combination of a live steam nozzle in the centre of the Exhaust steam
nozzle with a supplementary live steam injector substantially as herein before described
and illustrated by fig. 6 of the drawings.
14. The combinations of automatic Exhaust steam and supplementary live steam
Injectors substantially as hereinbefore described and illustrated by figs. 6, 7, 8 and 9
of the drawings.
15. The combination with Exhaust steam and supplementary live steam injectors
where the outlet from the ordinary overflow of the exhaust injector is controlled by a
diaphragm and also where both the overflow outlet, last mentioned, is controlled by
a diaphragm, and that overflow from the supplementary live steam injector combined
therewith, is controlled by another diaphragm substantially as herein before described
and illustrated by fig. 10 of the drawings.
16. The combination of Exhaust steam and supplementary live steam injectors,
where there are two live steam cones substantially as hereinbefore described and
illustrated by figs. 10 and 11 of the drawings.
17. The combination and arrangement of automatic Exhaust steam and supple-
mentary live steam Injectors substantially as herein before described and illustrated
by figs. 10 and 11 of the drawings or with an exhaust injector with or without the
valve p fig. 10.
18. The combination and arrangement of automatic Exhaust steam and double
live steam injectors substantially as hereinbefore described and illustrated by fig. 12
of the drawings, or as modified as illustrated by fig. 13 of the drawings.
19. The combination with Exhaust steam and supplementary live steam Injectors
of arrangements of overflow or starting valves arranged substantially as hereinbefore
described and illustrated by figs. 14 and 15 of the drawings.
20. The combination of an Exhaust steam Injector and live steam injector with two
overflows automatically operated substantially as hereinbefore described and illustrated
by fig. 16 of the drawings.
21. The combinations and arrangements of double live steam injectors, where the
steam to the second live steam nozzle is controlled automatically, substantially as
hereinbefore described and illustrated by figs. 17 and 18 of the drawings.
22. The combinations and arrangements of double live steam injectors substantially
as herein before described and illustrated by figs. 17 and 18 of the drawings.
23. In double live steam injectors an automatic starting valve (m³ or 2) when
actuated by a diaphragm or piston as hereinbefore described and illustrated by figs. 17
and 18 of the drawings.

page_text: 24. The combination of live steam injectors, when the first live steam injector fig. 17
is applied to and combined with the live steam injectors and connected valve mechanism
shown in figs. 1 and 2 as hereinbefore explained.
25. In live steam injectors the combination of the live steam injector shown by
figs. 8 and 9 with either of the first live steam injectors in figs. 17 and 18 as herein-
before explained.
26. In combination with Exhaust steam and supplementary live steam injectors,
arrangements for heating the fluid after passing the exhaust injector and before
entering the supplementary live steam injector substantially as hereinbefore described
and illustrated by fig. 19 of the drawings.
ليود
1000
PETER J. LIVSEY,
Agent.