Improvements in Water Return Systems for Steam Generators.
Year: 1897

page_text: Date of Application, 20th July, 1897--Accepted, 21st Aug.,
1897
COMPLETE SPECIFICATION.
Improvements in Water Return Systems for Steam Generators.
I, WILLIAM WHITELEY, of William Whiteley and Sons, Limited, of Prospect Iron
Works, Lockwood, Huddersfield, in the County of York, Machine Makers, do hereby
declare the nature of this invention (which invention has been communicated to me
by Edgar P. Holl, of 28, High Street, Hartford, in the County of Hartford, and
State of Connecticut, U.S.A., Steam Engineer) and in what manner the same is to
be performed, to be particularly described and ascertained in and by the following
statement:-
The invention relates to a system employed with steam plants, which establishes
and utilizes a flow of steam for returning water of condensation and entrainment from
a point below the water level in the generator, back into the generator against the
pressure therein.
The object of the invention is to produce a simple, inexpensive and efficient
water return system having sufficient range of capacity to be employed for returning
water of condensation and entrainment from either a single or a series of heaters,
from either a single or a series of engines, or from an aggregation of both heaters and
engines whether they utilize the steam under the same pressures, either high or low,
or under different pressures, both high and low.
The embodiments of the invention illustrated have a generator for producing
steam, a supply pipe leading from the generator for conducting steam to its work
and a pipe for returning the water of condensation and entrainment into the
generator, connected with the return system elements, which comprise means for
collecting the water of condensation and entrainment, a riser through which the
water is lifted, a stand pipe in which the water is accumulated, and a separator or
equivalent device with suitable vent and valves for inducing a vigorous flow of steam
and water up the riser and precipitating the water in the stand pipe, where it
accumulates until there is sufficient head to cause a flow through the water return
pipe into the generator, as more particularly hereinafter described and pointed out
in the claims.
Of the views, Fig. 1 shews an elevation of a system embodying the invention
arranged for use with heaters and engines, the valves in the pipes being so located
that the water of condensation and entrainment can be returned from either or both
the heaters or engines, whether they employ steam at the same or different pressures.
Fig. 2 shews an elevation of the system arranged for use in connection with steam
engines only. Fig. 3 shews an elevation of the system arranged for use in connection
with heating radiators only. Fig. 4 is a detail enlarged section of the separator that
is shewn as employed. Fig. 5 is a transverse section of the separator on plane
indicated by the broken line X, X, of Fig. 4. Fig. 6 is an enlarged longitudinal
section of a form of receiver that is used. And Fig. 7 is a transverse section of the
receiver on plane indicated by the broken line Y, Y, of Fig. 6.
The system may be used with any form of steam generator G, whether the generator
supplies steam under high or low pressures, to engines, pumps, heating radiators, feed
water heaters or other steam using devices. Leading from the generator is a steam
supply pipe 1, provided with a throttle valve 2 for controlling the passage of steam

page_text: from the generator. Leading into the generator is a water return pipe 3, provided
with a check valve 4 that opens toward the generator and a stop valve 5 that may be
used to cut off the flow of water to the generator. Connected with the return pipe 3
is an escape pipe 6 provided with a valve 7 that may be open for permitting the
escape of air when the system is started in operation.
As shown in Figs. 1 and 2, there may be connected with the supply pipe 1, branch
pipes 8 that lead to separators 9, which are adjacent to and communicate with
engines E. These branch pipes 8 are provided' with stop' valves 10. Leading from
these separators 9 are drip pipes 11 that communicate with a collector pipe 12.
As shewn in Figs. 1 and 3, connected with the supply pipe 1 there may be branch
pipes 13 that lead to heating radiators R, which are provided with ordinary inlet and
outlet valves. Leading from these radiators are drip pipes 14 that communicate-with
a pipe 15 leading to the collector pipe 12.
The collector pipe 12 communicates with a pipe 16, preferably through the receiver C.
If this system is provided for but a single radiator or a single engine, the
receiver C may be but a short section of ordinary pipe, or the pipe 12 may be
connected directly with the pipe 16, but where there are a number of steam using
devices from which the water of condensation and entrainment is to be collected the
receiver is made considerably larger in diameter than the collector pipe 12 and riser
pipe 16. Where a receiver is employed the collector pipe 12 may open directly.
therein, but it is preferred that the collector pipe 12 shall communicate with the
receiver through an ordinary ejector 17, and it is preferred to lead from the supply
pipe 1 to the ejector 17 a pipe 18 provided with a stop valve 19. This pipe is not
essential to the operation of the system but with it the system will operate more
efficiently, for it provides a short cut for a portion of the steam in order to equalize
the pressure and ensure a good flow of steam up the pipe 16. The equalizing pipe 18
may enter the receiver at any desired point above the water line therein, but it is
better to have this pipe communicate with the receiver through the ejector 17 so that
the flow of steam will aid the flow of water of condensation ond entrainment through
the collector pipe 12.
The receiver inay be of any suitable construction but it is preferably a cylindrical
tank with ordinary inlet, outlet and blow off perforations. The inlet of the receiver,
as shewn in Fig. 6, is opposite the end of the ejector 17, while the outlet is occupied
by a pipe 20 having a vertically arranged series of orifices 21 in its wall.
The pipe
20 extends through the top of the receiver, and on the outside is provided with an
ordinary stuffing box. The lower end of the pipe 20, which is below the level of the
water line in the receiver, is closed and a part of the orifices 21 are below the water
line and a part above. Instead of a series of orifices a vertical slot that extends
through the wall of the pipe above and below the water line may be used. The stuffing
box for the pipe 20 is connected with a frame that is secured to the top of the receiver,
which frame has vertical arms 22 that carry a coupling 23. The lower end of the
coupling is provided with a stuffing box 24 for packing the upper end of the pipe 20,
and the upper end of the coupling is threaded for receiving the threaded end of the
pipe 16. The pipe 20 is screw threaded between the two stuffing boxes, and turning
on the threads of this part is a hand wheel. 25 which is held against longitudinal
movement by a part of the frame so that when the hand wheel is rotated the pipe 20
may be adjusted vertically.
The pipe 16, provided with a controlling valve 26, extends from the coupling 23
upwards to a point some distance above the water level in the generator and forms
what may be termed the riser. This riser communicates with a separator S which is
located above the water line in the generator and communicates with a stand pipe 27
that opens at its lower end into the return pipe 3.
The separator S may be of any suitable form but is preferably made, as sliewn'in
Figs. 4 and 5, with an inlet passage 28, to which is connected the riser 16, an outlet
passage 29 to which the stand pipe 27 is connected, and an outlet 30 to which an
exhaust pipe 31 is connected. The outlet 30 is restricted, that is, it has a much
smaller area than the inlet 28 and outlet 29. The separator is provided with

page_text: partitions or .baffle plates 32, which serve to form a tortuous passage for the steam
through the separator.
The pipe 31 from the outlet 30 may have a hand valve, but it is preferred to
provide. this pipe with an automatic reducing valve 33 of common construction,
which valve may be located close to the outlet 30 or at some distance therefrom.
This pipe 31 may open to the atmosphere so that steam passing through the
reducing valve inay escape directly, or the pipe may lead to a pump P, as shewn in
Fig. 1, or may be connected with a pipe 34 leading to the pipe 6 that opens to the
atmosphere, as shewn in Figs. 1 and 2, or it may lead to a feed water heater H, as
shewn in Fig. 2, or it may lead to a radiator R, as shewn in Fig. 3, which radiator
may exhaust through a pipe 34 and the pipe 6.
Suitable valves 35, 36, 37, are located in the pipes 31 and 34 to direct the flow of
the exhaust through the different passages, as desired.
If the system is arranged with both heaters and engines, as illustrated in Fig. 1, a
reducing valve 38 of common construction and a stop valve 39 may be placed between
the supply pipe 1 and the branch pipe 13, and a pipe 40 with a valve 41 may lead
around the reducing valve from the live steam equalizing pipe 18 to the branch
pipe 13.
A valve 42 may be located in the supply pipe 1 adjacent to the reducing
.valve. An equalizing pipe 43 with a valve 44 may be located so as to connect a
branch of the radiator supply pipe 13 directly with the pipe 15 that collects the drip
from the radiators. The pump P may be connected with the pipe 13 by a pipe 45
provided with a valve 46 and connecting the pump with the collector pipe 12 is the
pipe 47 with a valve 48. In the pipe 15 near the pump is a valve 49, and in the
collector pipe 12 near the pump is a valve 50.
. . If the system is arranged with only engines or only radiators or any series of
devices employing steam at the same pressures, as illustrated in Figs. 2 and 3, the
reducing valve 38 is not required. If it is desired to arrange the system for use
with only one engine or only one radiator, or similar device, a valve 51 can be
located in the supply pipe 1 and a valve 52 can be located in the collector pipe 12
to shut those pipes from communication with the pipes connected with the devices
not in use.
If there is but one steam using device, the steam supply pipe 1 may end at the
valve 51 and the collector pipe 12 may end at the valve 52.
When the system arranged as shewn in Fig. 1, is employed with steam plants
using varying pressures of steam, for instance, with high pressure engines and low
pressure heating radiators, the valves 36, 41 and 49 are closed, all of the remaining
valves are opened.
After the air in the system at the start has escaped the valve 7 is also closed.
Steam from the generator passes through the supply pipe 1 to the branch pipes 8
and the separators 9 and in these separators the water of condensation and entrain-
ment is separated from the dry steain, the dry steam passing to the engines E and
the water flowing through the drip pipes 11 to the collector pipe 12.
From the supply pipe 1 steam also passes through the reducing valve 38, which
reduces the pressure, and then through the branches 13 to the radiators. The water
of condensation and entrainment from the radiators passes through the drip pipes 14
to the pipe 15, from which the pump passes it to the collector pipe 12.
The pump is only used when the steam is employed with the various devices at
different pressures, and its use is to get the water of condensation and entrainment
under low pressure from the radiator drip pipes into the collector pipe with the
water of condensation and entrainment under higher pressure from the engines. Soine
steam passes from the pipe 13 through the pipe 43 to the pipe 15 without passing
through the radiators, and while not essential to the working of the system, with
this pipe there is a shorter passage for the steam to the pipe 15, and therefore less
reduction of pressure due to friction and radiation and a more perfect circulation
through the lower pressure part of the system.
With this pipe the pressure in the pipe 15 will more nearly equal that in the
pipe 12 and there will be less work for the pump to perform.

page_text: From the collector pipe 12 the water of condensation and entrainment flows into
the receiver.
If all of the devices utilize steain at the same pressure, the valve 39 may be closed
so that steam will not pass through the reducing valve 38, and the valve 41 opened
so that steam can pass from the supply pipe I through the pipes 18 and 40 to the
radiator branch pipes 13. With steam in all of the devices at the same pressure it
will be unnecessary to utilize the pump, so that the valve 37 may be closed and the
valve 36 opened to divert exhaust steam from the-pump, and the valves 46 and 48
closed and the valve 49 opened so that water from the radiators will flow directly into
the collector pipe 12 without passing through the pump.
If the engines only are being used the valves 39 and 41 are closed to prevent steam
from passing to the branch pipes 13 that communicate with the radiators, and the
valves 37, 46, 48 and 49 are closed to prevent steam from passing through the pump and
back into the radiator part of the system, the rest of the valves, except of course 7,
being left open.
is
If the radiators only are being used under low pressure, the valves 19, 37, 42, 46, 48
and 50 are closed, the valves 39 and 41 being opened; then, from the supply pipe 1,
steam can only pass to the radiators through the reducing valve 38. The pump
not required if the radiators and engines utilize steam at the same pressure, or if
either the radiators or engines are used separately under generator pressure, or if
there are nothing but engines, as shewn in Fig. 2, or nothing but radiators, as shewn
in Fig. 3, in the plant from which the water is to be removed.
With the engine system of Fig. 2, steam from the generator passes through the
supply pipe 1 directly to the separators 9, which divert the dry steam to the engines
and send the water of condensation and entrainment into the collector pipe 12, from
which the water passes into the receiver.
With the heating system of Fig. 3, steam from the generator passes from the supply
pipe 1 directly to the branch pipes 13 and then through the radiators and drip
pipes 14 to the collector pipe 12, from which the water passes into the receiver.
In all of the arrangements illustrated, mingled steam and water from the collector
pipe 12 enter the receiver, the flow preferably being assisted by the movement of the
steam through the ejector 17. The water falls to the bottom of the receiver, where
it accumulates and forms a water level. The level of the water in the receiver will
depend on the position of the orifices in the pipe 20 but will never rise high enough
to close all of the orifices. By the use of the pipe 18 the pressure in the receiver is
maintained at substantially the pressure in the generator. The water passes into the
pipe 20 through the lower orifices while steam passes through the upper orifices and
carries the water in detached particles up the riser 16 into the separator S, where the
steam is separated from the water, the water being precipitated in the stand pipe 27
and the steam escaping to the exhaust pipe 31.
The flow of steam through the riser is induced and maintained by the escape of
steam through the valve 33 or other suitable vent in the exhaust pipe 31, or upper
end of the riser 16, and by adjusting this escape outlet the flow of steam may be
regulated.
With an automatic reducing valve of common construction there will be the
necessary escape of steam to secure the proper continuous flow of steam and water up
through the riser, and thus the flow up the riser will be automatically maintained
regardless of the steam pressure in the generator.
The escape of steam from the valve 33 is so small compared with the amount of
steam the riser 16 is capable of supplying that the pressure in the separator and on
top of the column of water that accumulates in the stand pipe 27 is not appreciably
reduced as a result of the escape of steam through the valve 33 but is inaintained
at substantially the pressure of the steam in the receiver. Of course, there is a slight
decrease in pressure, due to friction, radiation, and similar factors, but with the
equalizing pipes this does not materially lower the pressure in the separator below
that in the generator.
The water from the separator accumulates in the stand pipe 27 and establishes a

page_text: water level therein. In practice the pressure in the separator and on the water
column in the stand pipe 27 is somewhat less than the generator pressure because of
the loss due to friction, radiation and the like, and consequently the water will
accumulate in the stand pipe until it rises higher than the water level in the
generator before the weight of the water column, together with the pressure in the
separator, will overbalance the generator pressure and open the check valve 4.
When the water column reaches such a height that its weight, together with the
pressure in the separator, overcomes the generator pressure, the water will flow
through the check valve into the generator.
The steam
In starting the system the valve 7 is opened and air allowed to escape.
escaping through the pipe 31 may be exhausted into the atmosphere directly or it
may be used to heat feed water, for running a pump, or for any other purpose
desired. The equalizing pipe 18 is not essential but by its use a shorter passage for
the steam to the receiver and riser is provided and there is, therefore, less reduction
in pressure in the receiver due to friction and radiation and a more effective pressure
obtained for carrying up the particles of water through the riser, which ensures a
better and more free circulation through the system. By the employment of this
equalizing pipe 18 the pressure in the separator and on top of the column of water is
maintained at more nearly the pressure in the generator, so that the water in the
stand pipe does not rise very high above the water level in the generator, and a
comparatively short stand pipe may be used. By the use of the ejector 17 the
collection of water of condensation and entrainment is facilitated, and by the use of
a comparatively large receiver a considerable quantity of water can be collected and
subjected to the action of the current of steam which carries it to the separator. By
adjusting the valve 33 or vent from the separator, the flow of steam up the riser
may be regulated and controlled to suit the conditions under which the system is
used.
With this system there is a vigorous, rapid and continuous flow of steam through
the riser, which catches up from the receiver and carries with it water in the form of
detached particles.
This flow of steam is enough to prevent the accumulation of sufficient amount of
water in the receiver to interrupt the operation of the system.
The flow of steam and water up the riser is not limited to the amount of
condensation nor is it dependent on such a varying factor as condensation.
If there is a large amount of water of condensation and entrainment to be returned
the flow of steam can be regulated so that a larger quantity of water can be lifted
from the riser than at other times. There is nothing in this system to get
out of order and it operates smoothly and uniformly. The capacity of a
system working as described is practically unlimited and it can be applied to all the
varying classes of steam plants, and its use results in a saving of energy with a
consequent increase of efficiency of the plant.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
Firstly. The combination with a generator, of a steam supply pipe leading there-
from; a water return pipe leading thereto, one or more steam using devices
communicating with the steam supply pipe, a drip pipe for collecting the water of
condensation and entrainment, a riser communicating with the drip pipe, a stand
pipe communicating with the riser and with the water return pipe, and a separator
communicating with the riser and with the stand pipe for inducing a flow of steam
and water through the riser, substantially as specified.
Secondly. The combination with a generator, of a steam supply pipe leading
therefrom, a water return pipe leading thereto, one or more steam using devices
communicating with the steam supply pipe, a drip pipe for collecting the water of
condensation and entrainment, a receiver communicating with the drip pipe, a riser
communicating with the receiver, a stand pipe communicating with the riser and

page_text: with the water return pipe; and a separator communicating with the riser and with
the stand pipe for inducing a flow of steam and water through the riser, substantially
as specified.
"
Thirdly. The combination with a generator, of a steam supply pipe leading
therefrom, a water return pipe leading thereto, one or more steam using devices.
-communicating with the steam supply pipe, a drip pipe for collecting the water of
condensation and entrainment, a receiver communicating with the drip pipe, said
receiver having an adjustable outlet, a riser communicating with the outlet of the
receiver, a stand pipe communicating with the riser and with the water return pipe,
and a separator communicating with the riser and with the stand pipe for inducing a
flow of steam and water through the riser, substantially as specified.
↓
Fourthly. The combination with a generator, of a steam supply pipe leading
therefrom, a water return pipe leading thereto, one or more steam using devices
- communicating with the steam supply pipe, a drip pipe for collecting, the water of
condensation and entrainment, an equalizing pipe communicating with the steam.
supply pipe and with the drip pipe, a riser communicating with the drip pipe, a
stand pipe communicating with the riser and with the water return pipe, and a
separator communicating with the riser and with the stand pipe for inducing a flow
of steam and water through the riser, substantially as specified.
Fifthly. The combination with a generator, of a steam supply pipe leading
therefrom, a water return pipe leading thereto, one or more steam using devices
communicating with the steam supply pipe, a drip pipe for collecting the water of
condensation and entrainment, an equalizing pipe communicating with the steam
supply pipe and with the drip pipe, an ejector cominunicating with the equalizing
pipe and the drip pipe, a riser communicating with the ejector, a stand pipe
communicating with the riser and with the water return pipe, and a separator
communicating with the riser and with the stand pipe for inducing a flow of steam
and water through the riser, substantially as specified.
Sixthly. The combination with a generator, of a steam sapply pipe leading
therefrom, a water return pipe leading thereto, one or more steam using devices
communicating with the steam supply pipe, a drip pipe for collecting the water of
condensation and entrainment, an equalizing pipe communicating with the steam
supply pipe and with the drip pipe, an ejector cominunicating with the collector pipe
and equalizing pipe, a receiver communicating with the ejector, a riser communicating
with the receiver, a stand pipe communicating with the riser and with the water
return pipe, and a separator communicating with the riser and with the stand pipe for
inducing a flow of steam and water through the riser, substantially as specified.
Seventhly. The combination with a generator, of a steam supply pipe leading
therefrom, a water return pipe leading thereto, one or more steam using devices
communicating with the steam supply pipe, a drip pipe for collecting the water
of condensation and entrainment, a riser communicating with the drip pipe, a stand
pipe communicating with the riser and with the water return pipe, a separator
communicating with the riser and with the stand pipe for inducing a flow of steam
and water through the riser, and an exhaust pipe leading from the separator,
substantially as specified.
Eighthly. The combination with a generator,, of a steam supply pipe leading
therefrom, a water return pipe leading thereto, one or more steam using devices
communicating with the steam supply pipe, a drip pipe for collecting the water of
condensation and entrainment, a riser communicating with the drip pipe, a stand
pipe communicating with the riser and with the water return pipe, a separator
communicating with the riser and with the stand pipe for inducing a flow of steam
and water through the riser, an exhaust pipe leading from the separator, and an
adjustable valve located in the exhaust pipe, substantially as, specified.
.
2 Ninthly. The combination with a generator, of a steam supply pipe leading
therefrom, a water return pipe leading thereto, one or more steam using devices
communicating with the steam supply pipe, a drip pipe for collecting the water of
4 condensation and, entrainment, a riser, communicating with the drip pipe, a stand

page_text: pipe communicating with the riser and with the water return pipe, a separator
communicating with the riser and with the stand pipe for inducing a flow of steam
and water through the riser, an exhaust pipe leading from the separator, and a
reducing valve located in the exhaust pipe, substantially as specified.
Ténthly. The combination with a generator, of a steam supply pipe leading"
therefrom, a water return pipe leading thereto, one or more steam using devices'
communicating with the steam supply pipe, a drip pipe for collecting the water of
condensation and entrainment, a pump adapted to be connected with the drip pipe, a
riser communicating with the drip pipe, a stand pipe communicating with the riser
and with the water return pipe, and a separator communicating with the riser and
with the stand pipe for inducing a flow of steam and water through the riser,
substantially as specified.
Eleventhly. The combination with a generator, of a steam supply pipe leading
therefrom, a water return pipe leading thereto, steam using devices communicating
with the steam supply pipe, drip pipes leading from the steam using devices, a pipe
for collecting the water of condensation and entrainment communicating with the
drip pipes, an equalizing pipe connected between a steam supply pipe and a drip
pipe, a riser communicating with the collector pipe, a stand pipe communicating
with the riser and with the water return pipe, and a separator communicating with
the riser and with the stand pipe for inducing a flow of steam and water through the
riser, substantially as specified.
Twelvthly. The combination with a generator, of a steam supply pipe leading
therefrom, a water return pipe leading thereto, steam using devices, communicating
with the steam supply pipe, a reducing valve located between the steam supply pipe
and part of the steam using devices, a drip pipe for collecting the water of
condensation and entrainment, a riser communicating with the drip pipe, a stand
pipe communicating with the riser and with the water return pipe, and a separator
communicating with the riser and with the stand pipe for inducing a flow of steam
and water through the riser, substantially as specified.
7
T
Thirteenthly. The combination with a generator, of a high pressure steam pipe
communicating therewith, a low pressure steam pipe, a reducing valve between the
high pressure and low pressure pipes, a receiver, means for delivering the water of
condensation and entrainment from both the high pressure and low pressure steam
pipes into said receiver, and means for returning the water from the receiver to the
generator, substantially as specified.
:
Fourteenthly. The combination with a generator, one or more high pressure steam
using devices, one or more low pressure steam using devices, means for supplying
steam to said devices from the generator, a receiver, means for delivering the water
of condensation and entrainment from the steam using devices into the receiver, a
riser.communicating with the receiver and extending above the water level in the
generator, a valved outlet for the escape of steam from the riser, and a stand pipe
communicating with the riser and with the generator, substantially as specified..
Fifteenthly. The combination with one or more high pressure steam using devices
and one or more low pressure steam using devices, of a receiver located below said
steam using devices, a pipe for delivering the water of condensation and entrainment
from the high pressure steam using devices into the receiver, a pump for delivering
the water of condensation and entrainment from the low pressure steam using
devices to the receiver, a riser communicating with the receiver, a valved outlet for
the escape of steam from the riser, and a stand pipe communicating with the riser
and with the generator, substantially as specified.
Sixteenthly. The combination with a generator, of a pipe leading therefrom, a
series of high pressure steam using devices communicating with said pipe, a reducing
valve communicating with said pipe, a supply pipe leading from said reducing valve,
a series of low pressure steam using devices, a drip pipe for receiving the water of
condensation and entrainment from the low pressure devices, an equalizing pipe
between the supply and drip pipes of the low pressure devices, a drip pipe for all
the high pressure devices, means for forcing the water from the low pressure drip

page_text: pipe into the high pressure drip pipe, a receiver for receiving the water from the
high and low pressure drip pipes, and means for returning the water from the receiver
to the generator, substantially as specified.
Seventeenthly. The combination with a steam generator, of a steam supply pipe
leading therefrom, a riser communicating with said pipe, a separator communicating
with said riser and provided with a restricted outlet for steam, a stand pipe
communicating with said separator, and return pipe leading from said stand pipe
to said generator, substantially as specified.
Eighteenthly. A separator provided with an inlet for steam and water, a water
outlet and a restricted steam outlet whereby a constant flow of mingled steam and
water through the inlet is ensured and the pressure of the separator maintained,
substantially as specified.
Nineteenthly. A separator provided with an inlet for steam and water, a water
outlet and a steam outlet, said steam outlet being provided with an automatic reducing
valve whereby a constant flow of mingled steain and water through the inlet is
ensured and the pressure in the separator maintained, substantially as specified.
Twentiethly. The combination with a receiver for receiving the water of
condensation and entrainment from a series of steam using devices, of a riser
communicating with said receiver, an outlet for steam from said riser, and means for
controlling the escape of steam from said outlet, substantially as specified.
Twenty-firstly. The combination with a receiver for receiving the water of
condensation and entrainment from a series of steam using devices, of a riser
communicating with said receiver, a separator communicating with said riser and
provided with an outlet for steam, and means for automatically controlling the escape
of steam from said outlet, substantially as specified.
Twenty-secondly. A steam and water receiver adapted to be connected to a steam
return system, provided with a vertically adjustable outlet pipe, substantially as
specified.
Twenty-thirdly. A steam and water receiver adapted to be connected to a steam
return system, provided with an outlet pipe having a vertically arranged elongated
opening therein, substantially as specified.
Twenty-fourthly. The combination with a steam supply and steam using plant,
riser
of a pipe for collecting the water of condensation and entrainment; a
communicating with said pipe, an outlet for steam from said riser, means for
controlling the escape of steam from outlet, and a stand pipe communicating with
said riser, and with the generator, substantially as specified.
Dated this 19th day of July 1897.
TASKER & CROSSLEY,
Huddersfield, Patent Agents.