Year: 1887

page_text: Date of Application, 4th Mar.. 1887
Complete Left, 3rd Dec., 1887
Complete Accepted, 6th Jan., 1888
We HENRY JOHN DAVIS of 200 Camberwell Road, and HENRY. CHARLES TURNER
of 54 Shenley Road, both in the County of Surrey, Gas Engineers, do hereby declare
the nature of this invention to be as follows:-
This invention has for its object the construction of apparatus whereby the quantity
of gas supplied to the burner of a gas-stove hot-plate may be increased when the said
hot-plate is in active use, and reduced to a minimum when the hot-plate is not actively
engaged.
•
The invention consists in attaching to the lower part of the ring burner a bridge-
piece to which is pivotted or hinged a bent weighted lever. One end of this lever
projects slightly above the bars of the hot-plate, and has a mushroom or other suitably
shaped top, while the other extremity of the lever is furnished with a counterpoise
weight. This lever is also provided with a projecting arm, the end of which enters a
slot formed in a rod that passes through a hole in the bridge-piece, the other end of
the rod passing through the burner and extending to the gas supply tap or cock where
it terminates in a fine conical point. The point of the rod enters the outlet of the
cock to such an extent that when the burner is not in active use, the passage is nearly
closed and allows only just sufficient gas to pass as will keep the burner alight.
The action is exceedingly simple. When a kettle or other apparatus to be heated
is applied over the burner the bottom of the said kettle comes in contact with the
mushroom beaded top of the lever, which causes the pointed end of the rod to be
partially withdrawn from the outlet of the tap, whereupon a full supply of gas to the
burner is afforded, but upon removing the kettle, the counterpoise weight comes into
action and causes the conically pointed rod to enter further into the outlet of the cock
and to such an extent as will shut off the supply to the required quantity. By the
adoption of this apparatus great economy in the consumption of gas is ensured.
Dated this 4th day of March 1887.

page_text: We HENRY JOHN DAVIS of 200 Camberwell Road, and HENRY CHARLES TURNER
of 54 Shenley Road, both in the County of Surrey, Gas Engineers, 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 the construction of apparatus whereby the quantity
of gas supplied to the burner of a gas stove hot-plate may be increased when the said
hot-plate is in active use and reduced to a minimum when the hot-plate is not actively
engaged.
In order that the invention may be easily understood drawings are attached hereto
of which the following is a description. Fig. 1 is an elevation of a gas stove hot-
plate or ring burner, a part of the burner being in section and shows the position of
the moving parts when no vessel is being heated. Fig. 2 is an elevation of the
moving parts in the position they assume when the mushroom top is pressed down by
the weight of the vessel that is being heated, and Fig. 3 is a plan of the complete hot-
plate or burner.
The invention consists in attaching to the lower part of the ring burner A a bridge
piece B to which is pivotted or hinged a bent or other suitably shaped weighted
lever C. One end of this lever has attached to it an upright rod D which projects
slightly above the bars E of the hot-plate, and has a mushroom or other suitably
shaped top F, while the other extremity of the lever is furnished with a counterpoise
weight G. This lever is also provided with a projecting arm H, the end of which
enters a slot I formed in a rod J that passes through a hole in the bridge piece, the
other end of the rod passing through the burner and extending to the gas supply tap
or cock where it terminates in a fine conical point K. The point of the rod enters the
outlet of the cock or inlet-supply pipe to such an extent that when the burner is not
in active use the passage is nearly closed and allows only just sufficient gas to pass
as will keep the burner alight.
The action is exceedingly simple. When a kettle or other apparatus to be heated
is applied over the burner the bottom of the said kettle comes in contact with the
mushroom headed top F of the upright part attached to the lever and causes the
pointed end of the rod to be partially withdrawn from the outlet of the tap or inlet pipe
whereupon a full supply of gas to the burner is afforded, but upon removing the kettle
the counterpoise weight comes in action and causes the conically pointed rod to enter
further into the outlet of the cock or supply pipe and to such an extent as will shut
off the supply to the required quantity. By the adoption of this apparatus great
economy in the consumption of gas is ensured.

page_text: 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.
The construction of gas stove hot plates or ring burners in which there is a
combination of the weighted lever C having an upright mushroom headed rod D, and
armi H with the slotted and conically pointed rod J which enters the outlet of the tap
or inlet gas supply pipe, the whole being arranged as herein described and shown on
the drawings.
W. H. BENNETT,
Agent for the Applicants.