Improvements in and connected with Feed Water Regulators for Steam Boilers.
Year: 1897

page_text: Date of Application, 26th Mar., 1897
Complete Specification Left, 28th Dec., 1897-Accepted, 5th Feb., 1898
PROVISIONAL SPECIFICATION.
Improvements in and connected with Feed Water Regulators for
Steam Boilers.
I, JOSEPH WILLIAM REED, of Mayfield, Jarrow, in the County of Durham, Engineer,
do hereby declare the nature of this invention to be as follows:-
My invention relates to that type of feed regulators for steam boilers in which the
feed is controlled by a float regulating the amount of opening of a delivery valve
within the boiler, and is designed for use more particularly with boilers of the water
tube type, the object being to provide an apparatus whereby the water level may be
varied as desired, and which, though capable of automatic action is also adapted to be
under the direction of the attendant, and which is reliable, efficient, and not subject
to derangement.
According to my improvements, I employ a counterpoised float mounted on a lever
fulerumed on an oscillating valve casing containing a special regulating valve linked
to the float lever. The casing is connected to branches or junction castings on the
main supply pipe leading from the feed pump and on the distribution pipe, and is
capable of being oscillated and its contained valve independently operated by a rod
passing to the exterior of the boiler and under the control of the man in charge.
To this end, within the boiler, or in a water tube boiler within the upper steam or
water separator or drum, I arrange the valve casing or chest preferably cross-wise and
secure to the plating the branches for uniting its extremities to the inlet and distri-
bution pipe respectively. I use these branches as bearings for trunnions on the valve
casing, that at the inlet side being kept tight by means of a collar or enlargement on
the trunnion, bearing against the cover of the branch the contact surfaces being
spherically formed thereby admitting of the maintenance of the joint even should
the trunnion deviate from the correct line, while to complete the junction I arrange
a set screw so that its inner end, abutting against the trunnion extremity, sustains
the parts in the requisite positions with the aid of a lock nut or the like. Instead
of the bearing just described being made spherical, it may be ordinarily arranged,
conical or otherwise. The bearing of the outer trunnion need not be specially con-
structed as leakage at this part is of no moment, an easy fitting cylindrical joint
being sufficient.
In boilers where there is an auxiliary feed supply pipe in addition to a main, the
pipe from the auxiliary valve on the boiler front may join onto the branch or casting
forming the delivery trunnion bearing and thus constitute one common pipe for con-
veying the feed to the desired part of the boiler. This auxiliary supply pipe may,
however, be separately fitted.
On a standard fixed on or about the valve chest I pivot the lever which carries at
one end a hollow steel or solid float and at the other a weight counterbalancing same
and regulating its immersion, and I apply simple means, such as a stud fixed to
the valve chest and passing through an aperture in the lever and fitted with a collar
or collars and nut or nuts, for adjusting and limiting the vibration of the lever and
hence the amount of valve opening. I prefer to fit the float on that side of its
fulcrum remote from the front of the boiler, since by such location, I am enabled to

page_text: obtain a more compact disposition, while to shield it from the effects of violent ebul-
lition, and, especially in the case of marine boilers, wash of water, I surround it
with a perforated or openwork guard.
The valve may be a multiple piston valve with a corresponding number of
seatings, or it may be a single or double piston and single or double mitre valve com-
bined with corresponding seats or a combination of any suitable number of piston and
mitre valves, or I may employ flat faces and seats.
The water from the pump enters, by preference, between the valve seats and
escapes through separate passages to the distribution pipe; by thus increasing the
number of valve faces and seatings a corresponding increase of water passage is
obtained without increasing the diameter of the valve or amount of the lift. There-
fore as a small lift will only require a like movement of the float, less variation of
water level will serve to move the valve from full open to completely closed positions,
and usually the apparatus will automatically adjust itself to keep the regulator valve
just sufficiently open to preserve the pre-determined working water level.
In coupling the regulator valve to the float lever, I prolong it through the top of
its chest or casing and I employ, or prefer to employ thereat, a coned and spherical
and screwed connector and a screwed spindle with flat or squared part for operation
and with a link and check nut or nuts and by this arrangement, together with the
other adjustable parts before mentioned connecting with the float lever, the level can
be accurately regulated.
On or in connection with the valve chest I fix an arm extending to about the level
of the float lever, and on it arrange a ball or like universal joint from which an
arm or protuberance projects into a cavity or bifurcation of the float lever, and I
arrange a shaft or rod, connecting with said joint, to pass through a stuffing box to
the outside of the boiler, whereat I form a bracket for supporting its extreme end on
which I fix a hand lever, and a sleeve threaded into a boss on the bracket, such sleeve
permitting the rotary movement of the rod but preventing any longitudinal motion,
except when desired. This sleeve abuts against the boss of the hand lever or other
appropriate stop on the rod and is provided with means, such as a hand wheel, or flat
parts for the fitment of a spanner, for turning it whereby the rod is moved longitudi-
nally thus oscillating the valve chest and connected parts to raise or lower the float
and so
vary the level at which the water causes the float to actuate the
regulator valve, a nut or the like and an index being provided to lock the sleeve and
retain the parts in the required position and indicate such.
Means are fitted in combination with the aforementioned hand lever for fixing it
in any desired position and for indicating the corresponding position of the valve; in
the mid-position of the handle, the apparatus is free and works automatically.
When the hand lever is operated to revolve the rod or shaft, the projection afore-
said, acting in conjunction with the recessed part of the float lever raises or lowers it
and consequently the valve, thereby enabling the attendant to satisfy himself that it
is in working order.
I have described one rod or shaft for varying the water level and testing the work-
ing of the valve which is a neat and convenient arrangement, but, if desired, I may
provide independent appliances for each operation; thus, I may fit on the valve box
a worm or similar wheel to gear with a worm fitted on a shaft suitably supported and
actuated from the outside of the boiler to effect the alteration of water level, and for
the manual movement of the valve, I may dispose on the float lever an arm or pro-
jection to work between two jaws formed on an adjustable vertical reciprocating
rod sliding in suitable fixed guides and jointed by a crank and connecting rod or
equivalently to the part rotary shaft or rod carried, in this instance, at its inner end
in a boss formed for example on the valve chest or otherwise conveniently, an
universal joint or joints of fitting construction being arranged to provide for the
oscillation of the valve casing and adjacent parts. When the external hand lever,
situated as before, is turned to one side or the other of its mid-position, the
shaft is rotated and the said jaws, engaging the projection on the float lever
raise or lower same and similarly close or open the valve.

page_text: The jaws are spaced sufficiently wide apart not to interfere with the free vibra-
tion of the flat and the automatic action of the regulator valve, except when
the outer handle is used as described.
When the water level is not required to be alterable, I fit only the valve
testing device just described and in so doing, I may arrange the supply and dis-
tribution pipes in line connecting with the valve chest situated longitudinally in
this case and dispose the float on the side of its fulcrum contiguous to the front of
the boiler.
With the improved apparatus herein described the whole of the working parts may
be kept quite free and so ensure immunity from sticking and at the same time
perfect control over the movement of the gear is afforded.
Dated this 95th day of March 1807
PRYOR & HARVEY,
Agents.
Improvements in and connected with Feed Water Regulators for
Steam Boilers.
I, JOSEPH WILLIAM REED, Engineer, of Mayfield, Jarrow, in the County of Durham,
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 :-
My invention relates to that type of feed regulators for steam boilers in which the
supply of feed water is controlled by a float regulating the amount of opening of a
delivery valve, both arranged within the boiler, and is designed for use more
particularly with boilers of the water tube type, the object being to provide an
apparatus whereby the water level, or the height of the water at which the regulator
shuts off the supply, may be varied as desired, and which, though capable of automatic
action, is also adapted to be under the direction of the attendant, and which is reliable,
efficient and not subject to derangement.
According to my improvements I employ a counterpoised float mounted on a lever
fulcrummed on an oscillating valve casing containing a regulating valve linked to the
float lever. The casing is connected to branches or junction castings on the main
supply pipe leading from the feed pump and on the distribution pipe and is capable
of being oscillated to vary the water level, and its contained valve independently
operated to test its working, by a rod passing to the exterior of the boiler and under
the control of the man in charge.
I will fully describe my invention with reference to the accompanying drawings
showing its application to a water tube boiler, only so much of the usual upper drum
being delineated as will suffice to enable my improvements to be readily understood.
Figs. 1 and 2 are respectively a side elevation and a plan, both partly in section, of
a general arrangement.
Fig. 3 is a transverse section on the line X-X in Fig. 2;
Fig. 4 is a plan and Fig. 5 an end elevation thereof, partly in section, these three
figures illustrating details on an enlarged scale.
Fig. 6 is a central vertical section of a form of regulator or delivery valve.
Figs. 7 and 8 are similar views to Figs. 1 and 2 of a modification and Figs. 9 and 10
are respectively an enlarged longitudinal section and an end elevation of details
of same.
Referring to Figs. 1 to 5, 1 is the steam and water chamber or upper drum of a
water tube boiler and within it I arrange a casing or chest 2, preferably crosswise, to

page_text: contain a delivery valve 3 whose movement is, as usual, subject to a float 4 rising
and falling coincident with the water level thereby closing and opening the valve to
regulate the water supply. The casing 2 is provided with hollow trunnions 5 and 6
which are respectively united to the ordinary inlet or main feed supply pipe 7 and the
distribution pipe 8 by branches or junctions 9 and 10 bolted to the plating of
the chamber 1. I use these branches 9 and 10 to form bearings for the
trunnions 5 and 6, adapting them so that the chest 2 may be oscillated thereon
from outside the chamber 1. When the valve 3 is closed by the float 4, the
pressure inside the supply pipe 5 connecting with the feed pump will, in the general
design of the latter, exceed that outside, therefore a tight joint is necessary at the
inlet side of the casing 2, for which purpose, without affecting free oscillation
thereat, I make the connection as shown clearly in Fig. 3. Here it will be seen
that I fix on the inlet trunnion 5, by screwing or otherwise, a collar or enlarge-
ment 11 arranged to bear against the inner surface of the cover 12 of the branch 9
and that I also form the contact surfaces spherically, thereby ensuring the mainten-
ance of the joint, even should the trunnion deviate from the correct line, while to com-
plete the junction I so arrange in the branch 9 a set screw 13 that its inner end abuts
and presses against the adjacent surface of the trunnion 5 thus sustaining the parts
in the requisite positions with the aid of a lock nut as shown. I find it best to
employ the spherical contact, but if desired it may be ordinarily arranged, conical or
otherwise.
The pipe 8 is, as customary, open ended or largely perforated and of a convenient
length for distributing the water, therefore as the pressure inside it will not appreciably
differ from that outside, the joint at the delivery side of the valve casing 2 need not
be specially formed, leakage. thereat being of no moment, hence a plain cylindrical
construction, such as is shown in Fig. 3 is sufficient.
In boilers where there is an auxiliary feed supply in addition to a main supply as
in Figs. 1 and 2 the pipe 14, conveying it from the auxiliary non-return valve 15, is or
may be joined to the branch 10 to constitute with the pipe 8, as shown, one common
distribution pipe, but it will be understood that only the water from the pipe 7 passes
through the valve 3.
The float 4 is represented as a hollow steel cylinder of the construction and type
generally employed for the purpose, though it may be of a solid or other form if
desired; it is carried at one end of a lever 16 furnished at the other with a balance
weight 17 to regulate. the amount of immersion in the water. The float lever 16 is
pivoted at 18 on a standard 19 formed on or fixed to the valve casing 2 so that when
the latter is oscillated the float gear accompanies it. I prefer to fit the float 4 on the
side of its fulcrum 18 remote from the front of the boiler as shown in Figs. 1 and 2,
since, by such location, I am enabled to obtain a very compact disposition of apparatus ;
further, to shield it from the effects of violent ebullition, and, especially in marine
boilers, from wash of water, I surround it with a guard 20 suitably supported in the
chamber and perforated or otherwise formed to secure a proper level of water
thereat.
The valve 3 may be a multiple piston valve with a corresponding number of seat-
ings, or it may be a single or double piston and single or double mitre valve com-
bined with corresponding seats or a combination of any suitable number of piston and
nitre valves, or I may employ flat faces and seats. The water from the pump enters,
by preference, between the valve seats and escapes through separate passages to the
distribution pipe; by thus increasing the number of valve facings and seatings a cor-
responding increase of water passage is obtained without increasing the diameter of
the valve or amount of the lift. Therefore, as a small lift will only require a like
movement of the float, less variation of the water level will serve to move the valve
from full open to completely closed positions and in ordinary operation the apparatus
will automatically adjust itself to keep the regulator valve just sufficiently open to
preserve the predetermined working water level.
Fig. 3 illustrates the valve 3, as a combined single piston and single mitre valve
while Fig. 6 represents it as consisting of four mitre valves. The water from the

page_text: pump enters the casing 2 at 21 between the valve seats via the ordinary nou-return
valve 22 on the boiler end, the pipe 7 and trunnion 5 and it escapes through the
passages 23 and 24 and trunnion 6 to the distribution pipe 8.
The valve 3 is coupled to the float lever 16 at the point 25 and to this end, as will
be best seen in Fig. 3, I prolong its upper part 26 through the top of casing 2 where
it is made an easy fit as a slight leakage thereat is not material. In the upper side of
this extension 26 1 form a spherical recess 27 of small depth, to receive the rounded
point of the coned end 28 of a threaded spindle 29. The upper surface 30 of the
part 28 is also spherically formed, preferably with a common centre to the terminal
curve, and on this surface 30 a cap 31 with a spherical upper interior is fitted and
screwed or otherwise adjustably connected to the valve extremity 26 and there locked
by a pin 32. The spindle 29 provided with operating means, such as the flat parts 33,
is screwed and secured by a nut in a head piece or link 34 pinued at 25 to the lever 16
thus completing the connection between the latter and the valve 3. By this arrange-
ment the distance apart of the float lever 16 and the valve 3 can be varied by operating
the spindle 29 to screw it in or out of the head piece 34, the spherical surfaces on its
end 28 allowing of such movement exclusive of the valve 3, and also the independent
rotation of the latter on its seating.
On the valve chest 2 I fix a stud 35 to project through a hole of larger diameter in
the float lever 16 and fit at its free end a collar and nuts as shown at 36, but when the
valve is of a piston type wholly, then another collar on the stud is necessary at the
underside of the lever 16. Thus by adjusting the parts at 36 in conjunction with
the aforesaid means connecting with the valve 3 the vibration of the float 4 and
lever 16 can be limited or set to vary the valve opening or lift and so regulate the
float level access to the boiler for the purpose being obtained when required through
a manhole.
An aperture 37, of sufficient area to admit of the valve 3 being lifted and lowered
through same, is or may be made in the float lever 16 whereby the valve can be
conveniently removed and replaced when desired.
For communicating the applied external force to effect the oscillation of the casing 2
or to test the working of the valve 3, I fix to the casing 2 an arm 38 extending up-
wardly to about the level of the float lever 16 and on this arm I fit an universal joint
of any appropriate construction which has the undermentioned parts suitably con-
nected to it; in the example I show this joint as consisting of a ball 39 fitting a cor-
responding seat formed in the arm 38 wherein it is secured by a cap 40 and bolts.
An arm or protuberance 41, joined to the ball 39, projects into a cavity or bifurca-
tion 42 in the float lever 16 as best shown in Figs. 4 and 5 (the cap 40 is removed in
Fig. 5) and at or about right angles to the part 41 and connecting also with the
ball 39 I arrange a rod or shaft 43 continued out of the chamber 1 through a stuffing
box 44 whereon I form a bracket 45 for supporting its outer end whereat 1 key a
hand lever 46 and arrange a sleeve 47 externally threaded to suit a boss into which it
is screwed on the bracket 45. This sleeve 47 is fitted loosely on the shaft 43 so as to
permit the rotary movement of same, but prevent any longitudinal or endwise motion
except when desired, and it abuts, at one end, against the boss of the hand lever 46,
which is convenient though a flange or stop may be specially applied on the shaft 43
to form the abutment, and at its other end against a collar 48 at the extreme end of
the shaft 43 while for operation a canted head 49 or other equivalent device, such as
a pulley, or hand wheel is provided on it.
The hand lever 40 is for testing the working of the valve 3 by imparting to the
shaft 43 a rotary motion and the sleeve is for communicating a straight movement to
the same in the direction of its longitudinal axis to alter the water level, both
motions, however, being quite independent of one another.
To accomplish the latter result, the sleeve 47 is turned, by a spanner for instance
operating on its canted head 49, whereby; due to its abutment at the lever 46; the
shaft 43 is moved endwise and, consequent on the latter's connection with the valve
casing 2 through the arm 38, the casing is oscillated and also the float gear by reason
of its fitment thereon, hence such oscillation. will raise or lower the level of the float 4

page_text: thereby altering the height at which the water will subsequently cause it to close the
valve 3. On moving the hand lever 46 to one side or the other of its mid-position the
shaft 43 is partly revolved and the arm 41, through the ball 39, actuated to engage,
in vibrating up or down in the cavity 42, the top or bottom of the float lever 16, thus
raising or lowering the adjacent arm of same to open or close the valve 3 whereby the
attendant can satisfy himself that the valve is working properly, the universal joint
at the end of the shaft 43 ensuring no interference in this respect on the impartation
of the axial movement aforesaid.
An index disc .50, sliding on the shaft 43 and registering with a scale on the
bracket 45, is provided at the end of the sleeve 47 as shown in Figs. 1 and 2 so that
when the latter is operated the index 50 is moved correspondingly along the scale so
indicating the amount of oscillation given to the valve casing 2 and the float gear
borne thereon and hence the alteration of water level such position being maintained
by the aid of a check nut 51 which may have arms or be in the form of a wheel or
pulley for convenient manipulation. The movement of the hand lever 46 is governed
by a handle plate 52 formed as an extension of the bracket 45, a pin 53 passing
through holes in the plate and lever serving to hold the latter in the required position.
When the lever is turned to one side or the other of its mid-position and fixed there,
the valve 3 is held open or shut, which is useful in cases of accident or breakage, but
when secured in the mid-position, the apparatus is free and operates automatically
which is the normal condition of working. It will be understood, of course, that
other similar operating, indicating and locking devices may be employed and
disposed to suit different cases, those shown being only by way of illustration.
The foregoing is my preferred form of feed regulating apparatus but it may be
modified as circumstances vary; for instance it is sometimes not necessary that the
water level should be alterable from the outside of the boiler the valve testing device
being only required and in such an event that already explained may be fitted or a
slight modification of it as exemplified in Figs. 7 to 10 where the reference numerals
designate the same parts as those already used.
Herein it will be seen that I arrange the supply pipe 7 and the distribution pipe 8
in line uniting with each side of the valve chest 2 situated longitudinally instead of
transversely and appropriately attached to the plating of chamber 1 so as to be
incapable of rotary movement, and dispose the float 4 on the side of its fulcrum 18
contiguous to the front of the boiler. Further, instead of bifurcating the float
lever 16 to coact with a projection on the shaft 43 I reverse this by fixing on its side
a projection 54 to intervene between jaws 55, 55, constituting a cavity on a rod 56.
This rod 56 is guided at its upper end in a bracket 57 fixed to one side of the
standard 19 while its other end, which is forked, is connected by a pin 58 to one end
of a lever 59 keyed on the shaft 43 supported at its inner end in a boss 60 on the
casing 2, or it might be on a part adjacent thereto, and passed as before, to
the exterior of the boiler through the stuffing box 44, where it is provided with
the handle 46 controllable as to its motions by the pin 53 and the handle plate 52,
formed now as an extension of the stuffing box 44.
By operating the handle 46 in the aforementioned manner, the shaft 43 is partly
revolved and likewise the lever 59 which reciprocates the rod 56, whereupon one or
other of the jaws 55 engage the float lever projection 54 in the bifurcation thereby
lifting or depressing the float lever 16 and consequently closing or opening the
valve 3. The jaws 55 are spaced sufficiently wide apart so as not to interfere with
the free movement of the float lever 16 and hence the automatic action of the
apparatus, except when the external handle 46 is moved.
As will be seen in Fig. 9 I provide the aforesaid means for connecting the valve 3
to the float lever 16 at 25 and at the casing 2 for limiting the vibration of the
float 4, but in addition, I attach the rod 56 to its fork by a screwed joint, as shown,
to permit of its adjustment along with the said parts to attain the object before
stated.
".
The auxiliary feed water supply 14 is separately fitted in this design as it might
also be in that illustrated in Figs. 1 and 2, if desired.

page_text: In the form of regulator first herein described 1 employ one rod or shaft 43 for
the dual purpose of oscillating the casing 2 and moving the valve 3, which is very
neat and handy, but of course the same objects may be accomplished in other
equivalent ways such as the provision of distinct appliances for each operation as
will be obvious without further illustration by drawings. For example I may fit on
the casing 2 a worm wheel to gear with a worin fixed on or revolved by the shaft 43,
suitably actuated from the outside of the boiler to effect the oscillation of the valve
chest and the float gear thereon to alter the water level, while I may, to test the
working of the valve 3, employ the apparatus explained in reference to Figs. 7 to 10
but provide the ball joint shown in Figs. 1 to 5, or other form of universal joint, in
connection with the shaft 43 at its bearing. 60, or where required, to permit of the.
oscillation of the casing 2.
With my improved feed water regulating apparatus the whole of the working parts
are kept quite free and in practice I find there is absolute immunity from sticking
while the attendant is afforded perfect control over the gear thereby rendering it of
especial value in boilers, such as the water tube .type, where the amount of water
contained is small in comparison to their power.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what I
claim is:
1/ Automatic feed regulators for water tube and other boilers wherein the supply
of water is passed through a delivery valve subject to the control of a float operated
lever borne on the said valye's casing which is supported by hollow trunnions bearing
in branches connected to the main supply and distribution pipes so as to be capable
of oscillation from the exterior of the boiler for the purpose of varying the water
level or the height of the water at which the float shuts off the supply, as set forth.
2/ Feed water regulators of the kind specified in the preceding clain in which the
lever carrying the float controlling the opening and closing of the delivery valve is
fulcrummed on, and is moved concomitantly with, the said valve's casing connected
to a shaft or rod continued through a stuffing box to the exterior of the boiler
whereat it is furnished with a sleeve or operating device by which the shaft can
be moved endwise to oscillate the valve casing, as and for the purpose set forth.
3/ In feed water regulators of the type herein referred to, the use, for testing the
working of the delivery valve, of means comprising a bifurcation in, or a projection
on, the float lever coacting respectively with a projection or a reciprocating bifurcated
rod, connecting with a shaft or rod supported at one end on or about the valve casing
and extended to the exterior of the boiler where it is provided with an operating
handle, all combined, arranged and operating substantially as described and illustrated
in Figs. 1 to 5 and in Figs. 7 to 10 of the accompanying drawings.
4/ Automatic feed regulators for water tube and other boilers consisting of a
delivery valve for regulating the supply of feed water under the control of a float and
lever fulcrummed on said valve's casing which is provided with trunnions bearing in
branches permitting its oscillation and uniting it to the main supply and distribution
pipes, a bifurcation in the float. lever, an arm connecting with a shaft attached to the
valve casing by an universal joint and extended to and supported at the exterior of
the boiler, and a hand lever and a sleeve on said shaft, the whole being combined,
constructed and adapted to operate to effect the alteration of the water level and the
testing of the delivery valve from the outside of the boiler by one shaft substantially
as described and illustrated in Figs. 1 to 5.
5/ Automatic feed regulators for water tube and other boilers consisting of a
delivery valve for regulating the supply of feed water under the control of a float and
lever fulcrummed on said valve casing which is provided with trunnions bearing in
branches uniting it to the main supply and distribution pipes and permitting its
oscillation, a worm wheel on the valve casing to gear with a worm connected to a
shaft carried on or about the valve casing and extended to and supported at the
exterior of the boiler and a handle or operating device on said shaft all in combination

page_text: with another similarly fitted shaft connecting with a reciprocating bifurcated rod,
and a projection on the float lever, the whole being constructed and adapted to
operate to effect the alteration of the water level and the testing of the delivery valve
from the outside of the boiler by two distinct shafts substantially as described and in
part illustrated in Figs. 7 to 10.
6/ In feed water regulators of the type herein referred to, the use, for regulating
the water supply of a delivery valve having a spherical recess in one end and two or
more faces with corresponding seats on its casing in combination with spherical
surfaces on a screwed adjusting spindle that connects it to the float lever whereby
large water passage is obtained with small diameter or lift and the valve can be
independently rotated on its seat all arranged substantially as described and shown in
the accompanying drawings, especially Figs. 3, 6 and 9.
7/ In-feed water regulators of the type herein referred to, the means for varying the
amount of delivery valve opening or lift comprising the parts 26, 28, 29, 31 and 34
connecting with the valve.3 in combination with the stud 35 connecting with the
float lever 16 all arranged and operating substantially as described and illustrated,
especially with reference to Figs. 3 and 9 of the annexed drawings.
8/ The several arrangements of apparatus constituting my improvements in and
connected with feed water regulators for steam boilers constructed and operating as
herein described and shown in the accompanying drawings.
Dated this 25tu way of December 1997..
"
For the Applicant,
PRYOR & HARVEY,
Agents, 3, St. Nicholas' Buildings, Newcastle-on-Tyne,