An Appliance for Preventing the Escape or Waste of Gas from Unclosed Burners or Taps from which the Flow has been Stopped and afterwards Turned On.
Year: 1891

page_text: Date of Application, 30th Nov., 1891
Complete Specification Left, 30th Aug., 1892-Accepted, 1st Oct., 1892
PROVISIONAL SPECIFICATION.
An Appliance for Preventing the Escape or Waste of Gas from
Unclosed Burners or Taps from which the Flow has been
Stopped and afterwards Turned On.
I, GEORGE GOLDSMITH, of No. 4 Cumberland Terrace, Lloyd Square,
Clerkenwell, in the County of London, Poor Law Officer, do hereby declare
the nature of this invention to be as follows:-
In warehouses or other buildings, a burner, or burners may inadvertently be left
lighted, the gas at night being turned off at the meter. When the gas is again
turned on, an escape ensues, and as sometimes happens, the room in which it occurs
may not be opened for some time, thus causing an accumulation of gas leading to
explosion or fire.
To prevent this, I introduce or place a small barrel or chamber in an upright
position between the tap and burner having within a cylindrical valve closed at the
top and having slots ports or openings in its circumference.
This valve sinks in a socket or tube when the gas is turned off. Immediately
above is a pivoted rod supporting a conical plug fitting an aperture in the top of
the barrel through which the gas flows to the burner. When the gas is turned on
again, its pressure forces the closed end of the valve against the rod and thus
presses the conical plug into the aperture. No gas can then pass to the burner
until the bottom of the rod is pulled aside by a horizontal rod regulated with a
spring and passing through the side of the barrel, and this renders personal
attention necessary.
On the accompanying sheet of explanatory drawings, 1 indicate in three sectional
views the nature of my invention :-A is the cylindrical barrel or chamber of brass,
or other suitable metal say about of an inch in length and of similar diameter, for
an ordinary gas burner, but which can be made to any size required to suit the
sectional area of a gas pipe. B is the valve (working within the tube or socket C)
with slots ports or openings d, d¹. D is a conical plug on the rod E working on
the pivot points e & f. F is a sliding horizontal rod holding the end of E in a ring
or eye and attached by a small spiral springs to the inside of the barrel A.
Fig. 1. shews the position of the above mentioned parts when the gas is burning.
Fig. 2. shews the position after the gas is turned off, when it is to be noted that
the valve B drops down, and the rod E attains a perpendicular position directly
over it.
Fig. 3. shews the position when the gas is again turned on, the rod E pressing up
the plug D, thus closing the chamber or barrel, and preventing escape of gas until
the horizontal rod F is pulled out again.
Fig. 4. is a view in plan of the rod F which is of rectangular section.
Dated this 20th don of November 1801

page_text: COMPLETE SPECIFICATION.
An Appliance for Preventing the Escape or Waste of Gas from
Unclosed Burners or Taps from which the Flow has been
Stopped and afterwards Turned On.
I, GEORGE GOLDSMITH, of No. 4 Cumberland Terrace, Lloyd Square,
Clerkenwell, in the County of London, Poor Law Officer, 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,
reference being had to the drawings filed with my Provisional Specification and
to the letters and figures marked thereon, that is to say :-
In warehouses or other buildings a gas burner or burners may, inadvertently, be
left lighted, the gas at night being turned off at the meter. When the gas is again.
turned on an escape ensues and, as sometimes happens, the room in which it occurs
may not be opened for some time, and thus an accumulation of gas occurs which
often leads to explosion or fire.
To prevent this danger arising I construct an appliance which I introduce or
place between the tap and the burner. This appliance consists of a small barrel
or chamber within which is a cylindrical valve closed at top and having slots,
ports, or openings in its circumference. This valve works in a socket or tube
within which it sinks when the gas is turned off. Immediately above is a pivotted
rod supporting a conical plug fitting an aperture in the top of the barrel or
chamber through which the gas flows to the burner. When the gas is turned
on again, its pressure forces up the valve and brings its closed end against the
extremity of the pivotted rod and thus presses the conical plug into the aperture.
No gas can then pass to the burner until the end of this rod is pulled aside so
as to allow the valve to rise sufficiently to uncover its ports. This is effected
by means of a spring controlled horizontal rod which passes through the side of
the barrel or chamber, and to operate which renders personal attention necessary.
And in order that this invention may be readily understood and carried into
effect, will now describe the same more fully with reference to the drawings filed
with my Provisional Specification.
Fig. 1 is a vertical section of the appliance showing the position the parts occupy
when the gas is burning;
Fig. 2 is a similar view but with the parts in the position they occupy when the
gas
turned off at the meter; and,
Fig. 3 is likewise a similar view, but with the parts in the position they occupy
when the gas is again turned on at the meter.
Fig. 4 shows separately the spring controlled horizontal rod.
A is the cylindrical barrel or chamber, which may be composed of brass or other
suitable material, and of a size proportionate to the sectional area of the gas pipe.
The lower end piece of this barrel is formed with a tube or socket C within which
is free to slide the cylindrical valve B having its upper end closed and its circum-
ference formed with slots, ports, or openings d, d¹. Situated immediately above
the valve B is a pendent rod E pivotted at to the lower extremity of a short rod
carried by the conical plug D, and said short rod is connected by a cross rod to a
pivot at e. this last mentioned rod being provided with a stop at its end to limit the
downward movement of the plug D and parts in connection therewith.
The
pendent rod E rests normally with its end above the valve B but can be drawn on
one side and out of the path of the valve B by means of the spring controlled rod F
having at its outer end a head and at its inner a loop (Fig. 4) with which the rod E
always engages.
Assuming the parts to be in the position shown by Fig. 1 (that is to say, when
the gas is turned on and burning), it will be seen that a free flow for the gas into
the chamber A is given through the ports d of the valve B, and to the burner

page_text: through the conical opening above the plug D. Should the gas now be turned off
at the meter, the valve B immediately sinks down into the socket C and the
horizontal rod F is projected forward under the influence of its spring, thereby
bringing the end of the rod E above the valve B, as shown at Fig. 2. When the
gas is now again turned on at the meter the valve B will be prevented from rising
sufficiently high to uncover its ports by reason of its coming against said rod E,
and consequently no flow of gas can take place into the chamber A and therefore
no gas can escape from the burner until the horizontal rod F is pulled out.
Instead of arranging the spring controlling the horizontal rod F within the
chamber A it may, if preferred, be arranged outside said chamber.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, 1 declare that what I
claim is :-
1. The construction of an appliance for preventing the escape or waste of gas
from unclosed burners or taps from which the flow has been stopped and afterwards
turned on, consisting of a chamber or barrel in which a valve is capable of being
operated by the pressure of the gas coming from the meter, together with means
for retarding the rise of said valve and for stopping the flow of gas when it is
turned off at the main and then turned on again, said means being so arranged that
they can be controlled from the outside for the purpose of permitting the gas to
flow to the burner when desired, substantially as described.
2. The appliance for preventing the escape or waste of gas from unclosed
burners or taps from which the flow has been stopped and afterwards turned on,
substantially as hereinbefore described and as shown with reference to the drawings
accompanying my Provisional Specification.
Dated this 30th day of August 1902.
ERNEST DE PASS,
78, Fleet Street, London, and 6, Victoria Street, Nottingham,
Agent for the Applicant.