Year: 1885

page_text: THOMAS SALKELD BORRADAILE, of 7 Union Court, Old Broad Street, in the
City of London, Gentleman, does hereby declare the nature of this invention to be
as follows:-
The object of this Invention is to provide an efficient means of regulating the
quantity of gas to be admitted to a gas burner, in accordance with the pressure
brought to bear on the gas within the main, and in a manner more accurate than
that in which such regulation takes place in any of the instruments at present in
use for regulating the admission of gas to burners. In the regulator constructed
according to my Invention, the whole of the moveable parts are enclosed within a
casing of cylindrical or other suitable shape, surmounted by any description of
burner and screwed upon the gas pipe in the usual way. This casing has three
circular perforations, varying in succession from the smallest diameter at the top to
the largest at the bottom, and called hereinafter the upper, the middle and the
lower perforation respectively. In the sides of the upper part of the casing, and
communicating with the upper perforation, I make two small apertures or orifices
which are wholly or partly closed or opened, as the case may be, by a tube sliding
within the upper and descending into the middle perforation, within which its
lower part is guided in a disc that rests upon a lining screwed into the lower part
or perforation of the casing. This lining itself forms the nut of the screw thread
surmounting the connecting piece which is screwed on to the gas pipe. Upon
this connecting piece I fix a circular top with two apertures in it, which circular
top being larger in diameter than the connecting piece, acts as a stop and prevents
the connecting piece from being screwed down too low. The upper sliding tube
I fit with a circular disc which itself moves up and down within the middle
perforation of the casing. Above this disc, the sliding tube has two apertures or
orifices in its sides, for the gas to pass through. Thus, there are in this regulator
three discs, the upper being part of the sliding tube, the middle resting on the
lining between the casing and the connecting piece, and the lower being fixed on
Price 871

page_text: the connecting piece itself. The middle disc is furnished with a tube within
which the sliding tube moves up and down, and with two apertures or orifices, and
so is the lower disc furnished with two orifices of the same kind, communicating
with the gas pipe upon which the connecting piece is screwed. If the middle disc
be made thick enough for the accurate guidance of the sliding tube, the aforesaid
tube within which the sliding tube moves up and down, may be dispensed with.
The gas coming from the gas-pipe first enters the last-named two orifices made
in the lower disc, and thence part of the gas passes through the apertures in the
middle disc below the upper disc. In doing so, it raises the sliding tube whereof
the upper disc forms a part. This portion of the gas does not get beyond the lower
surface of the sliding disc. The main portion of the gas passes straight into the
sliding tube itself and partly goes through the small apertures in the sides of the
upper part of the casing to the gas burner, and partly through the lateral orifices
in the sliding tube into the chamber formed by the middle perforation of the
casing. Within this chamber the gas produces a counter-pressure which counter-
balances the pressure beneath the upper or sliding disc and causes that disc to rise
or descend in proportion to the pressure and to the quantity of gas that passes
through the sliding tube. By this means the quantity of gas that goes to the
burner is regulated to a nicety. At the same time, the screw threads made inside
the casing and outside the lining, these two acting as nut and screw to one another,
enable the distance between the lower disc and the middle disc to be made larger
or smaller; and by means of this arrangement the correlative proportion of
pressure and quantity of gas within the body of the regulator may be adjusted in
such a manner as to admit of fixing the exact quantity of gas that is to reach the
burner.
By a variation in the construction of the regulator herein before described,
I suppress the middle and lower discs together with the lining between the casing
and the connecting piece, and I screw the connecting piece direct into the casing.
In that event. I form a tube closed at the bottom and furnished with a slot ; such
tube being inserted into the sliding disc, works in the same way as the slide tube
with its lower opening and two lateral orifices, and by being moved up and down
in the sliding disc, admits of the lower opening being enlarged or reduced, thus
varying the consumption of gas and simplifying the arrangement and combination
of the organs of the regulator constructed according to my Invention.
Thated this tooth days of NammL TUOR

page_text: -
THOMAS SALKELD BORRADAILE, of 7 Union Court, Old Broad Street, 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 has for its object to provide an efficient means of regulating the
quantity of gas to be admitted to a gas burner, in accordance with the pressure
brought to bear on the gas within the main, and in a manner more accurate than
that in which such regulation takes place in any of the instruments at present in
use for regulating the admission of gas to burners. The mode and manner in which
I propose to carry my Invention into practice is shewn in the accompanying sheet
of drawings.
Figure 1. is an elevation and Figures 2 and 3 are longitudinal sections of a
regulator constructed according to my Invention. The body of the regulator
consists substantially of a casing A which has three circular perforations, ranging
in succession from the smallest diameter at the top to the largest at the bottom and
called hereinafter the upper, the middle, and the lower perforation respectively.
In the upper part of the casing B I provide two lateral apertures or orifices which,
as shewn in Figures 2 and 3, may be wholly or partly closed or opened, as the case
may be, by means of a tube C. This tube slides within the upper perforation B
and descends into the middle perforation D, and it is connected with, or fixed upon,
a disc E which rests upon a lining F screwed into the lower part or perforation G
of the casing A, which lining itself forms the nut of the screw-thread surmounting
the connecting piece H which is screwed on to the gas pipe. The circular top n
of the connecting piece has two apertures in it. The circular disc E connected with
the sliding tube O moves up and down within the middle perforation D, as shewn
in Figure 3, and the sliding tube itself has two lateral apertures, or orifices, above
the disc, for the gas to pass through, as shewn by the arrows. The middle disc m
which rests on the lining F is furnished with a vertical tube c within which the
aliding tube C moves up and down; and both the middle disc m and the lower
disc n, surmounting the connecting piece H, have two orifices each in them, which
communicate with the gas pipe upon which the connecting piece is screwed. The
tube may also slide within a tube e affixed to the disc E, as shewn in a longi-
tudinal section in Figure 4. The burner K is fixed upon the casing A in any
suitable manner, for example in the fashion shewn in Figures 2 and 3.
The motion of the gas, and the way in which it travels from the gas pipe to the
burner, are shewn by arrows in Figures 2 and 3. From the gas pipe it passes first
into the orifices made in the lower disc % One part of it then passes through the

page_text: apertures or orifices in the middle disc m and in doing so raises the upper disc E
with which the sliding tube C is connected. The sliding disc E having entered the
middle perforation D, its lower surface intercepts this portion of the gas, the
progress of which is thus stopped short, except that a small quantity passes
the circumference of the disc and finds its way into the chamber formed by the
middle perforation D. In the meanwhile, another portion of the gas that had
entered through the orifices in the disc n has found its way into the sliding tube C.
This second portion of the gas is divided in its turn. Part of it proceeds through
the orifices in the upper part B of the casing A straight to the burner K, and
another part through the lateral orifices in the sliding tube C into the chamber
formed by the middle perforation D. The counter-pressure produced by the gas
within the chamber D counterbalances the pressure beneath the sliding disc E and
causes this disc to rise or descend in proportion to the pressure and to the quantity
of gas that passes through the sliding tube C; so that the quantity of gas that goos
to the burner is thereby regulated to a nicety. At the same time, the screw-
threads made inside the lining F and outside the connecting piece H, acting as
male and female screw to one another, enable the distance between the discs m
and n to be enlarged or reduced, thus allowing a larger or a smaller quantity of
gas, as the case may be, to pass through the tube c and thence to the sliding tube C.
By this method the correlative proportion of pressure and quantity of gas within
the regulator may be adjusted with such extreme nicety as to allow of the exact
quantity of gas that is to reach the burner being regulated with the uttermost
accuracy.
Figure 5 is a side elevation, Figure 6 a longitudinal section and Figure 7 a
transversal or lateral section of a regulator constructed according to my Invention,
in which some of the parts shewn in Figures 1 to 4 are replaced by others. In this
arrangement, instead of three discs, I provide but one movable disc that comes
straight down upon the connecting piece H which is screwed upon the gas pipe.
This connecting piece has three canals or orifices in it, viz. two lateral ones, through
which a portion of the gas, having raised the disc E, enters the central chamber D
within which it forms a counter-pressure analogous to that produced by the gas in
the chamber D Figures 2 and 3, and one central canal or orifice through which the
gas finds its way into the sliding tube, then communicating with the counter-
pressure chamber D through the lateral openings described before and proceeding
through the lateral apertures or orifices in the upper part B of the casing A to the
burner K, in a manner similar to that shewn in Figures 2 and 3. In lieu of the
male and female screw arrangement shewn in Figures 2 and 3, I use a tap or cock L
by which the quantity of gas admitted to the sliding tube O through the central
çanal or orifice may be regulated to a nicety. Instead of this tap or cock L, &
screw L may be used in the manner shewn in a longitudinal section in Figure 8.
I do not mean to confine myself to the number and configuration of the orifices or
canals through which the gas is admitted to the regulator constructed according to
my Invention, nor yet to the exact mode and manner of varying the quantity of
gas admitted to such regulator, as illustrated in the accompanying sheet of drawings.
Thus, the lower part of the regulator may be so fixed as to turn without screwing
itself up and down; and one or more openings in the lower part of the regulator
may be brought into connection with the fixed tube c upon or within which the
sliding tube Č moves up or down.
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
claim is :-
1. The mode and manner of varying the quantity of gas passed through a
regulator by causing the tube connected with the movable disc to slide upon or
دينا

page_text: mechanical appliance, as shewn in Figures 6 and 7, or by means of a male and
female screw arrangement, as shewn in Figures 2 and 3 of the accompanying sheet
of drawings.
2. The mode and manner of forming a hollow chamber beneath the burner, as
shewn in Figures 2 and 3, for the purpose of expanding the gas before it reaches
the burner,
3. The mode and manner of changing the position of the sliding tube within the
disc or discs, as shewn in Figure 4 of the accompanying sheet of drawings.