An Automatically Closing Gas Valve and Regulator.
Year: 1892

page_text: Date of Application, 6th Jan., 1892-Accepted, 27th Feb., 1892
COMPLETE SPECIFICATION.
An Automatically Closing Gas Valve and Regulator.
I CHARLES SPRATT of 9 Erlanger Road, New Cross Gate, in the County of
Kent, Electrician, do hereby declare the nature of my said invention and in
what manner the same is to be performed to be particularly described and
ascertained in and by the following statement:-
The principal object of this invention is to admit of any number of gas lights
being extinguished simultaneously by turning off the gas by a main cock; whilst
ensuring nevertheless that no escape shall take place when the gas is again turned
on at the main, providing at the same time means for regulating the quantity of
gas passing through such valve.
For this purpose an automatic cut off valve is provided in connection with
each burner or it may in some cases be in connection with a group of burners.
The manner in which I prefer to carry my invention into effect is shewn by the
accompanying drawings of which
Figs. 1-5 are sections of some of the principal pieces which may form parts of
the automatic valve according to my invention, and
Fig. 6 shows the complete valve.
Having reference to the drawings (Figs. 5 and 6) a forms the casing of the
valve and may be made in one piece from suitable material and screw threaded in
the manner of ordinary gas fittings, the inlet of gas being through a nipple or
nozzle (6). The upper part of Fig. 4 is a top view and the lower part a cross
section of a dome (c) consisting of a cylindrical disc provided with a downwardly
directed flange. To the disc is attached a cap (c) in such a manner that when
the dome is placed on the bottom of casing (a) the cap will drop over nozzle (b).
Gas now cannot enter except if the pressure of the gas be sufficient to overcome
the weight exerted on the cap. In the disc of (c) there are one or more per-
forations (2). A. cover (d) covers in the whole, and in the cover may be fixed an
ordinary burner (e) or the gas may be led to a distance for use. (f) is a pin fixed
and shaped in such a manner that when pushed or pressed it causes (c) to be
slightly tilted or raised in such a manner that gas will escape from underneath
the cap.
The working of the valve is as follows-
The pressure exerted by the gas on the internal surface of cap (c) being
insufficient for lifting the entire disc (c), it is first necessary, in order to admit gas,
to tilt the cap in such a manner that the gas can escape from underneath it and act
on the disc which it readily raises on account of its greater surface. As long as
the supply of gas is kept up disc (c) will remain suspended, the gas gradually
escaping through perforations in the disc or between the sides of the casing and
the cylindrical flange. When the gas is turned off that is to say no gas enters
y the nozzle (6) then cap c¹ by its own weight drops down over nozzle (b) so that
he passage of gas through same
urned on at the main the nozzle remains closed until pin (f) is again used to lift
closed and although the gas may be again
he cap valve off the nipple.
In order to regulate when desired the quantity of gas passing through the valve,
make one or more indents (a¹) in the edge of the casing (a), and corresponding
ndents (g) in the cap or cover (g) which serve to close the casing. By putting
he cover (g) on (a) in such a manner that indents (a¹) and (9') overlap each
ther more or less partially, the means of egress for the gas are more or less
estricted. For the purpose of making the regulation automatic I provide a
ng (4), with a cylindrical flange, corresponding in circumference to the interior
casing (a).

page_text: This ring (h) being placed inside the casing, when disc (c) is raised by the
pressure of the gas, ring (h) will be raised also, thereby closing more or less the
openings formed by (') and (a¹) and in consequence preventing a too ample supply
of gas (commonly termed flaring of the gas).
It is obvious that if the cap (c) were removed from the dome (c) the other parts
would still form a regulating valve but would not possess the property of closing
automatically, and it is likewise obvious that the relative position of regulator /
and cut off e may be reversed.
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 :
1) An automatically closing gas valve consisting essentially of a cap dropping
over the gas inlet when the supply is withdrawn, and readmitting the gas only
when acted upon by an exterior pin, lever or other agent substantially as described.
2) In such gas-valve the means for regulating the amount of gas supplied to the
burner either above or below the self closing cap consisting essentially in an
indented cover fitted on to the similarly indented casing in combination with a
ring closing the apertures formed by these indents, substantially as described.
Dated this 6th love of Tenue 1800
C. R. BONNE & Co.,
57 & 58, Chancery Lane, W.C., Authorised Patent and Trade Mark Agents.