Improvements in Apparatus for Regulating the Supply of Com- bustible Liquid or Vapour to Liquid Fuel Burners.
Year: 1897

page_text: Date of Application, 12th Nov., 1897
Complete Specification Left, 11th Aug., 1898-Accepted, 22nd Oct.,
1898
Date of Application, 12th Nov., 1897
Complete Specification Left, 11th Aug., 1898-Accepted, 22nd Oct., 1898
Improvements in Apparatus for Regulating the Supply of Com-
bustible Liquid or Vapour to Liquid Fuel Burners.
We, HENRY ALONZO HOUSE, Junior, of East Cowes, in the Isle of Wight,
Engineer, and ROBERT RINTOUL SYMON, of 20, Abchurch Lane, in the City of
London, Gentleman, do hereby declare the nature of this invention to be as
follows:-
This invention relates to improvements in apparatus of the kind described
in the Specification of a Patent dated 22nd September 1892 No. 16,909 and
more particularly to the apparatus illustrated in Figure 6 of the drawings
accompanying the said specification, for the purpose of regulating the supply of
combustible vapour to liquid fuel burners employed in the furnaces of steam
boilers by means of an expansible and collapsible chamber subject to the varying
pressure of the steam in the boiler whereby a tap or valve regulating the supply
of combustible vapour to the burner is opened or closed according as such pressure
decreases or increases. In this arrangement described in the aforesaid specifica-
tion and shown in the said figure of the drawings the expansible and collapsible
chamber is connected to the operating lever or handle of the tap or valve by
means of a pin-jointed link, but as in practice it is found that the movement
of the valve necessary to give a comparatively large variation in the quantity
of combustible material passing, especially when the apparatus is employed to
regulate the quantity of liquid fuel passing to the burner, is exceedingly small
the use of pin-jointed links or other jointed connections necessarily gives so much
play in the parts that the requisite exactitude in the movement of the tap or
valve cannot be thereby obtained. The object of the present invention is to provide
means for effecting the movement of the valve with certainty, and to the exact
extent required without the use of jointed parts which are subject to wear and
tear and irregular and uncertain action, and for this purpose we employ the
following arrangements:
We employ an expansible and collapsible chamber of any suitable kind, but
preferably one in which a flexible diaphragm is employed as the moving part.
This chamber communicates with the boiler to the liquid fuel burner of which the
supply of combustible liquid or vapour is to be regulated. The diaphragm is
constantly pressed inward by a spring, but as the pressure in the chamber varies
according to the pressure in the boiler the diaphragm is expanded or collapsed
so as to balance the tension of the spring in the well known manner.
In the pipe
leading the combustible liquid or vapour, as the case may be, to the burner, is
placed a valve the spindle of which is prolonged out through a stuffing box or
other equivalent device for preventing the escape of liquid or vapour past the
said spindle, and through suitable guides, and its outer end abuts directly or
indirectly against the diaphragm or other movable part of the expansible and
collapsible chamber, being pressed against the same by the aforesaid spring, or
it may be otherwise attached directly to the diaphragm. When there is not

page_text: pressure enough in the aforesaid chamber to press out the diaphragm or other
movable part against the resistance of the spring the valve remains raised from
its seat and the maximum quantity of liquid or vapour can pass to the burner;
but as the pressure increases the diaphragm or other movable part is pressed
outwards against the resistance of the spring, and the valve is moved towards
its seat reducing the quantity of liquid or vapour passing to the burner; and
when a prearranged pressure in the boiler is reached or exceeded the valve is
entirely closed so as to shut off the supply of liquid or vapour completely. But
in most cases it is desirable to so construct the valve or its seat that a small
passage is always left open to allow of the passage of sufficient liquid or vapour
to the burner to supply a small flame so as to avoid the necessity of relighting
every time a certain pressure in the boiler is reached or exceeded.
The apparatus may be fitted up in any suitable framework or casing according
to circumstances.
The apparatus above described is applicable to all cases where it is desired
to regulate automatically the supply of combustible liquid or vapour to burners
employed in the furnaces of steam boilers, whether such boilers are used for
stationary, marine, motor-car' or other purposes.
In connection with the regulating valve we also employ, when necessary; a
straining apparatus for removing any foreign substances from the combustible
oil before it reaches the said valve, in order to reduce, as far as possible, the chance
of choking, the latter; but we prefer, when using such straining, apparatus,. to
apply thereto a bye-pass valve by means of which the oil can be conveyed to, the
regulating valve without passing throughout the, strainer in the event of the latter.
becoming so charged with dirt that the oil will not pass through it at the required.
speed.
.
گرا
Improvements in Apparatus for Regulating the Supply of Com.
bustible Liquid or Vapour to Liquid Fuel Burners..
We, HENRY ALONZO HOUSE, Junior, of East Cowes, in the Isle of Wight,.
Engineer, and ROBERT RINTOUL SYMON, of 20, Abchurch Lane, in the City, of
London, Gentleman, 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:-*
'
"
This invention relates to improvements. in apparatus of the kind described
in the Specification of a Patent dated 22nd September 1892, No. 16,909, and
more. particularly to the apparatus illustrated in Figure 6. of the drawings
accompanying the said specification, for the purpose of regulating the supply of
combustible vapour to liquid fuel burners employed in the furnaces" of steam
boilers by means of an expansible and collapsible chamber subject to the varying
pressure of the steam: in the boiler whereby a tap or valve regulating the supply
of combustible vapour to the burner is opened or closed according as such pressure
decreases or increases. In the arrangement described in the aforesaid specifica-
tion and shown in the said Figure of the drawings, the expansible and collapsible
ཀ་ clc
101.
j'

page_text: chamber is connected to the operating lever or handle of the tap or valve by.
means of a pin-jointed, link; but as in practice it is found that the movement
of the, tap or valve necessary to give a comparatively large variation in the
quantity of combustible material passing is exceedingly small, the use of pin-
jointed links or other jointed connections necessarily gives so much play in the
parts that the requisite exactitude, in the movement of the tap or valve cannot be
thereby obtained. The object of, the present invention is to provide means for
effecting the movement of the valve with certainty, and to the exact extent
required without the use of jointed parts which are subject to wear and tear
and irregular and uncertain action. For this purpose we employ the arrange-
ments shown in the accompanying sheet of drawings in which Figure 1. is an
elevation and Figure 2 a section taken on the line XX of Figure 1 of an
apparatus constructed in accordance with the present invention. ' !
A is a chamber provided with a flexible diaphragm-B. This chamber A com-
municates by the passage C with the steam boiler, (not shown in the drawings)
to the liquid fuel burner of which the supply of combustible liquid or vapour
is to be regulated. The diaphragm B is constantly pressed inward, that is to
say upwards in Figure 2 towards and against the part A2 of the cover A¹ of
the chamber A, by a spring D. the pressure of which can be adjusted within.
certain limits by screwing the screwed plug E up or down in the cross-bar F. of,
the supporting frame G." As the pressure in the chamber A varies according.
to the pressure in the boiler, the diaphragm is expanded or collapsed so as to
balance the tension of the spring D in the well-known manner. In the passage Ḥ
leading, the combustible liquid or vapour, as the case may be, to the burner, is.
placed a valve I the spindle J of which is prolonged out through a, stuffing.
box K or other equivalent device for preventing the escape of liquid or vapour
past the said spindle, and. through the plug E which serves also as a guide for
the said spindle, and its outer end abuts against the diaphragm B, being pressed
against the same by the spring D acting on the curved disc L to which the
spindle J is rivetted, or the spindle may be attached directly to the diaphragm.
if preferred.
When there is not pressure enough in the chamber. A to press out the dia-
phragm B against the resistance of the counter-balancing spring D, the valve I,
remains raised from its seat M, and the maximum quantity of liquid or vapour
can pass to the burner; but when the pressure in the boiler exceeds a certain
amount the diaphragm is pressed outwards against the resistance of the spring,
and the valve I is moved towards its seat thereby reducing the quantity of liquid.
or vapour passing to the burner; and when a pre-arranged pressure in the boiler
is reached or exceeded the valve I is entirely closed so as to shut off the supply
of liquid or vapour completely. But in most cases it is desirable to so construct
the valve or its seat that a small passage, such as the passage N in the valve
for example, is always left open to allow of the passage of sufficient liquid or
vapour to the burner to supply a small flame so as to avoid the necessity of
relighting the burner by hand every time a certain pressure in the boiler is
reached or exceeded.
Instead of the chamber. A being provided, with a diaphragm B as above
described, it may be made as a bored-out cylindrical chamber and be provided
with a piston which is pressed constantly outwards by the spring D and is acted
upon in the opposite direction by the pressure. of steam entering through the
passage C. Or any other form of collapsible and expansible chamber may be
employed in connection with the regulating valve I and spring D.
The apparatus above described is applicable to all cases where it is desired
to regulate automatically the supply of combustible liquid or vapour to burners
employed in the furnaces of steam boilers, whether such boilers are used for
stationary, marine, motor-car or other purposes.
In connection with the regulator valve above described we employ, when
necessary, a straining apparatus, consisting of a box P provided with a strainer Q

page_text: for removing any foreign substances from the combustible oil before it reaches
the valve I in order to reduce, as far as possible, the chance of choking the
latter; but we prefer, when using such straining apparatus, to apply thereto a
bye-pass valve K by opening which the oil can be allowed to pass to the valve I
without passing through the strainer Q, in the event of the latter becoming so
charged with dirt that the oil will not pass through it at the required speed.
Instead of pressing the end of the valve spindle J against the diaphragm B
by means of the counterbalancing spring D, a special spring, (not shown in the
drawings) may be employed for that purpose, the spring D being used only for
pressing the diaphragm or other movable part of the chamber inwards against
the pressure in the latter.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, we declare that what
we claim is:
First. An apparatus for regulating the supply of combustible liquid or vapour
to a liquid fuel burner, which consists of an expansible and collapsible chamber
subject to the varying pressure of the steam in the boiler which is heated by
the burner, a regulating valve operated directly by the movable part of such
chamber without the intervention of pin-jointed links or connections, and a
spring adapted to counter-balance more or less of the pressure in the chamber
substantially as described.
Second. In an apparatus of the kind forming the subject-matter of the first
claiming clause hereof for regulating the supply of combustible liquid or vapour
to a liquid fuel burner maintaining the regulating valve, or the spindle thereof,
constantly in contact with the movable part of the expansible and collapsible
chamber by means of the counter-balancing or other spring, without the inter-
vention of pin-jointed links or connections, substantially as described.
Third. In an apparatus of the kind forming the subject-matter of the first
claiming clause hereof for regulating the supply of combustible liquid or vapour
to a liquid fuel burner, connecting the regulating valve, or the spindle thereof,
directly to the movable part of the expansible and collapsible chamber, without
the intervention of pin-jointed links or connections, substantially as described.
Fourth. In an apparatus for regulating the supply of combustible liquid
vapour to a liquid fuel burner, the use of a strainer and bye-pass valve in con-
nection with the oil or vapour inlet passage to the regulating valve, substantially
as described,
or