Improvements in Apparatus for Automatically Controlling the Supply of Gas to Atmospheric Gas Burners.
Year: 1887

page_text: Date of Application, 13th May, 1887
Complete Left, 13th Feb., 1888
Complete Accepted, 6th Apr., 1888
Improvements in Apparatus for Automatically Controlling the
Supply of Gas to Atmospheric Gas Burners.
We, THOMAS FLETCHER and ALFRED CLARE both of Thynne Street Warrington
in the County of Lancaster Manufacturers of Gas Apparatus, do hereby declare the
nature of this invention to be as follows:-
This Invention relates to atmospheric gas burners employed for boiling water
cooking and the like purposes and it has for its object to effect the automatic control
of the gas supply so that the flame may be turned up or lighted when a vessel is
placed upon the burner and lowered or extinguished when the vessel is removed
therefrom.
These Improvements consist in controlling the supply of gas by means of a
specially constructed valve operated by a lever link or arm and in the combination
therewith of a hood or bonnet formed upon the end of the injection tube above the
valve.
The valve is formed or placed behind the jet, and is most conveniently constructed
to resemble a cross of which the horizontal members are the nozzle and jet and the
vertical members a hollow cylinder or tube closed at the top within which is a
cylindrical plunger or rani. A comparatively deep annular groove is turned or
formed in the ram in such a position that when the ram is in a certain position the
annular groove forms in line with the nozzle and jet a way or passage for the gras but
when it is raised or lowered the way or passage through the valve is closed to the
required extent by the body of the ram, the annular groove and the travel of the
ram being so adjusted and arranged that at the lower or higher position just
sufficient gas passes through the valve to keep the flame burning low if no pilot light
is used or to be entirely closed when a pilot is used to relight the burner when the
vessel is placed on it. The lower part of the ram may advantageously have one or
more small annular grooves turned or formed therein as we find that this precaution
diminishes the risk of leakage of gas from the valve. The lower end of the ram

page_text: below the body of the valve, is connected with an arm link or lever one end of which
projects above the level of the burner so that when a vessel is placed thereon the
projecting part is depressed and the other end and with it the ram is raised the
contrary motion resulting when the vessel is removed. When desirable the motion
of the ram can be reversed by dividing the arm into two parts each being so pivoted
as to reverse the motion. The motions thus imparted to the valve cause a full supply
of gas to pass to the burner when it is in use and either total extinction or a minimum
supply at other times so long as the gas is turned on.
At or near the end of the injection tube and above the valve a hood bonnet or
similar enlargement is formed for the collection of any gas which may leak from the
valve and from whence it is drawn by the air and gas passing to the burner.
Dated this 19th day of Mov A D 1887
WILLIAM E. HEYS,
Agent for the Applicants.

page_text: Supply of Gas to Atmospheric Gas Burners.
We, THOMAS FLETCHER and ALFRED CLARE both of Thynne Street Warrington
in the County of Lancaster Manufacturers of Gas Apparatus, 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 atmospheric gas burners employed for boiling water
cooking and the like purposes and it has for its object to effect the automatic control
of the gas supply so that the flame may be turned up or lighted when a vessel is
placed upon the burner and lowered or extinguished when the vessel is removed
therefrom.
These Improvements consist in controlling the supply of gas by means of a
specially constructed valve operated by a lever link or arm and in the combination
therewith of a hood or bonnet formed upon the end of the injection tube above the
valve.
And in order that our Invention may be more fully understood we have hereunto
appended a sheet of drawings to which reference is hereinafter made.
Fig. 1 is a section of an atmospheric gas burner furnished with our improved
automatic controlling apparatus and Fig. 2 is a plan of the operating lever.
A, is the burner; B is the injection tube; C is the controlling lever; D is the
plunger or ram of the valve H; E is the fulcrum of the lever C; F is the gas jet,
and G is a hood or bonnet over the valve.
The valve H is formed or placed behind the jet F, and is most conveniently
constructed in the form of a cross of which the horizontal members are the nozzle
and jet, and the vertical members a hollow cylinder or tube closed at the top and
within which works the cylindrical ram or plunger D. A comparatively deep annular
groove is turned or formed in the ram so that when the ram is in a certain position
the annular groove forms in line with the nozzle or jet, a way or passage for the gas,
but when it is raised or lowered, the way or passage through the valve is closed to
the required extent by the body of the ram, the annular groove and the travel of the
ram being so adjusted or arranged that at the lower or higher position just sufficient
gus passes through the valve to keep the flame burning low if no pilot light be used,
or to be entirely closed when a pilot is used to re-light the burner when the vessel is
placed on it. The lower part of the ram may advantageously have one or more
small annular grooves turned or formed therein as we find that this precaution
diminishes the risk of leakage of gas from the valve.
The lower end of the ram is connected to one end of the lever C, the other end of
which projects above the burner A so that when a vessel is placed thereon the
projecting end is depressed and the other end, and with it the ram, is raised; the
contrary motion resulting when the vessel is removed. If desirable the motion of

page_text: T
the ram may be reversed by dividing the arm or lever C, into two parts each being so
pivoted as to reverse the motion. The motions thus imparted to the ram cause a full
supply of gas to pass to the burner when it is in use and either total extinction or a
minimum supply at other times so long as the gas is turned on.
At or near the end of the injection tube B and above the valve H, a hood, bonnet,
or similar enlargement G is formed for the collection of any gas which may escape
from the valve and from whence it is drawn by the air and gas passing to the
burner.
Having now particularly described and ascertained the nature of our said
Invention and in what 'manner the same is to be performed we declare that what
we claim is :-
(1.) The arrangement and combination with a gas burner, of a lever operated by a
vessel or other object placed over or upon the burner, and a valve having a vertical
ram or plunger for controlling the gas supply; substantially as hereinbefore described
and as illustrated by the accompanying drawings.
(2.) The arrangement and combination of a gas burner with a lever operated by a
vessel or other article placed over or upon the burner, a valve having a vertical ram
or plunger actuated by the lever and a hood or bonnet; substantially as and for the
purposes herein before described and as illustrated by the accompanying drawings.
Doted this 10th day of Fehrn AD 1888