Improvements relating to the Burners of Gas Stoves and Grills.
Year: 1894

page_text: Date of Application, 12th Apr., 1894
Complete Specification Left, 14th Jan.. 1895-Accepted, 16th Feb., 1895
Improvements relating to the Burners of Gas Stoves and Grills.
I WALTER JOHN FULLER of 170 Wellington Buildings, Pimlico, in the County
of London, Gas Engineer, do hereby declare the nature of this invention to be as
follows:-
My invention is designed to turn off the gas in a gas stove or grill automatically
(independently of the cock) when a cooking utensil is taken off the stove, and to
turn it on and light it when a utensil is placed on the stove, and 'for this purpose
I provide a special valve attachment. According to this invention I provide a
small chamber made preferably of brass for attachment to gas supply pipe and
having two outlets, the one not required being plugged off, and to the bottom of
the aforesaid chamber I fix the working portion of the appliance, which consists
of two vertical tubes one inside the other and a spindle running through the
inner tube.
The outer tube is closed at bottom and the lower end of the aforesaid spindle is
screwed therein. At the top of the aforesaid spindle is a cap provided with a
suitable seating. A short spindle extends from the bottom of the outer tube and
on to this is fixed an adjustable connection.
The bottom spindle passes through a suitable guide fixed underneath the afore-
said chamber.
The aforesaid seating is kept against the end of the supply pipe (which enters
the aforesaid chamber) by suitable means, and a lever is attached to the adjustable
connection aforesaid, which extends to the stove so that when the weight of a
cooking utensil comes on to said lever it will pull the spindle down, draw the afore-
said seating from the end of the supply pipe and allow the gas to enter the chamber
and supply the burner, near which I fit a pilot light, so that the gas is at once
lighted. In order to prevent escape of gas from the aforesaid chamber a small
quantity of glycerine or mercury must be poured between the aforesaid tubes and
the apparatus should be fixed vertically.
Dated this 19th day of Anril 1904
BROWNE & Co.,
9, Warwick Court, W.C., Agents for Applicant.
Improvements relating to the Burners of Gas Stoves and Grills.
I, WALTER JOHN FULLER, of 170 Wellington Buildings, Pimlico, in the County
of London, Gas Engineer, 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 the burners of gas stoves and grills and comprises the
novel arrangement of valve hereinafter described for preventing the waste of gas
when a cooking utensil or the like is removed from above the burner.
In carrying out my invention I provide a body or socket adapted to be placed
in, and form a part of, the gas supply pipe, the said socket having within it a

page_text: chamber adapted for the connection thereto of the pipe for conveying the gas to
the burner and being provided with a hole establishing communication between the
interior of the socket and the chamber, the said hole being normally closed by a
valve which is held against its seat by a weight or spring and moved away from its
seat by the depression of the usual headed rod in connection with the burner. To
prevent the leakage of gas around the valve stem, the latter is arranged within a
tube projecting into a mercury or other seal.
To enable my invention to be fully understood I will describe the same by
reference to the accompanying drawing, in which :-
Figure 1 is a sectional elevation of my improved gas controlling valve; and,
Figure 2 is a section on the line 2-2, Figure 1.
a is the body or socket, the two ends of which are adapted to be connected to
the main gas supply pipe in such a manner that the said socket practically forms a
part of the said pipe; and 6 is the chamber which is formed within the said body
the walls of the said chamber being preferably cast in one piece with the body.
7
c is the opening into the said chamber in which the pipe for conveying the gas to
the burner is fixed and d is the passage or opening through which the gas passes
into the chamber b, a valve seat e being formed around the lower end of the said
passage, as shewn in Figure 1; f is a plug screwed into an opening above the
passage d and serving when removed to allow the said passage to be cleaned and to
afford access to the interior of the chamber b. g is the valve (preferably provided
with an india rubber face) which, when bearing against the seat f, shuts off the
supply of gas to the chamber b, the stem h of the said valve sliding through a
frame or nut i, which is screwed into the socket a, and being provided with a
downwardly projecting tubular extension j.
kis a cup or tube sliding upon the tubular extension j and screwed onto the
lower end of the stem h of the valve g, the said cup serving to receive mercury or
other suitable liquid for forming a seal around the lower end of the tubular
extension j, so as to prevent the escape of gas between the latter and the said
valve stem.
I is a bell-cranked lever one arm of which is connected to the usual headed rod
(arranged adjacent to the burner in such a manner that it will be depressed when
the cooking utensil is pushed over the burner) and the other arm of which is
adjustably connected to a rod m forming an extension of the valve stem and
connected thereto by a nut n, which nut also serves as a lock nut for preventing
the stem from rotating relatively with the cup k.
o is a counterweight connected to the bell-cranked lever and serving to hold the
valve g against its seat when no cooking utensil is over the burner.
The valve mechanism hereinbefore described has the great advantage that it is
removed from a position adjacent to the burner where it is liable to become
deranged or rendered inoperative owing to the grease and dirt which are insepar-
able from a gas stove.
It is to be understood that a pilot light is arranged in conjunction with the
gas burner in the usual manner, the supply of gas for which is derived from any
suitable source.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I deciure that what I
claim is :-
1. A valve mechanism for use in conjunction with the burner of a gas stove and
grill, wherein a chamber is formed within a socket constituting a part of the main
gas supply pipe, the said chamber being placed in communication with the gas
burner and provided, with a passage closed by a valve within the socket, sub-
stantially as described.
2. In valve mechanism having a chamber arranged within a socket and a valve
operating as described, arranging the stem of the said valve to slide in a tube
projecting into the cup containing a liquid seal, substantially as described.

page_text: 3. The manufacture and use of the improved valve mechanism for use in con-
junction with the burner of a gas stove and grill, substantially as hereinbefore
described and illustrated in the accompanying drawing.
Dated the 14th day of January 1895.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.