Year: 1887

page_text: Date of Application, 17th Dec., 1887
Specification Accepted, 27th 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 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 gas burners for heating and
cooking in such a manner that the supply of gas may be increased when the burner
is in active use, and reduced to a minimum when the burner is comparatively
dormant.
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 burner or gas stove
hot plate, a part of the burner being in section and shows the position of the moving
parts when no vessel or other object 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 or other object that is being heated, and Fig. 3 is a plan
of the complete burner or hot plate.-Fig. 4 is a part elevation and part sectional
elevation of a modification of Fig. 1. Fig. 5 is a part elevation and part sectional
elevation of a portion of the burner showing the position the moving parts assume
when the burner is in active use. Fig. 6 is a view taken at right angles to Fig. 5,
and Fig. 7 is a part plan of the modified arrangement with the upper ring N and
outer ring X removed.
The invention consists in the first place of attaching to the lower part of the ring
burner A a bridge piece B which supports two guides and D. To the bottom part
of the lower guide is hinged a weighted lever E. This lever supports a piece of
metal of the shape shown at F in the drawing and the upper and lower parts G and H
of which are round and works through holes in the guides C and D. The top of this
piece of metal is of mushroom shape as exhibited at J or other suitable form and is
raised slightly above the bars M. One end of the rod K has a slot formed in it so
that the piece of metal F may pass through it, the other end of the rod extending
to the gas supply pipe, or tap or cock, where it terminates in a fine conical point L.
The point of the rod enters the outlet of the cock or inlet supply pipe V to such an
extent that when the burner is not in active use the passage is nearly closed and

page_text: allows only just sufficient gas to pass as will keep the burner alight. The supply
pipe V is screwed into the mixing tube as seen in Figs. 1, 3 and 4 and may be
adjusted by simply screwing the pipe in or out so as to suit any variation in the
pressure of the gas supply, the back nut W being used to secure it in the position to
which it is adjusted.
The action is exceedingly simple. When a kettle or other vessel or object to be
heated is applied over the burner the bottom of the said vessel or object comes in
contact with the mushroom headed top J and forces down the piece of metal F, which
from its passing through the slot in the rod K and from its peculiar shape causes the
pointed end of the rod to be partially withdrawn from the outlet of the cock or inlet
pipe, whereupon a full supply of gas to the burner is afforded, but upon removing
the vessel or object the weight of the lever comes into action and causes the piece of
metal F to resume its former position, whereby the pointed rod is thrust into the
outlet of the cock or supply pipe and to such an extent as will limit the supply to the
required quantity.
In
The invention in the second place consists of a modification of the foregoing.
this case the bars M are attached to a separate ring N although not confined to that
particular form of section. This ring is mounted and pivotted upon two pivots O
and P, or is otherwise hinged or hung to the burner A. The ring is so hung that it
always tilts as shown in Fig. 4 when no weight is applied to it, but upon a vessel or
other object being placed on the ring X and bars M it pushes down one end of the
ring N until the whole assumes the horizontal as shown in Fig. 5, and in doing so
pushes down a curved piece of metal Q which as it passes through a hole or slot
formed at the end of a hollow rod R that works in guides U U, the other or conically
pointed end of the rod at S is withdrawn from the outlet of the cock or inlet supply
pipe V, so as to allow of a full supply of gas to pass to the burner. On removing the
vessel the ring N again tilts and draws up the piece of metal Q which has the effect of
thrusting the pointed end of the rod into the outlet of the cock or inlet pipe, when
only sufficient gas will pass through the hollow rod R as will supply the pilot light at
the opposite end T of the rod.
Although the foregoing description and the drawings refer particularly to ring
burners for boiling and cooking it will be easily understood that burners made on a
similar plan may by alteration of their form be adapted to heating tailors and other
irons, tinsmiths and plumbers stoves, and the instruments used by shoemakers and
bookbinders, and for other purposes.
By the adoption of either form of this apparatus great economy in the consumption
of gas is ensured.
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 construction of gas ring or other shaped burners in which there is a
combination of the weighted lever E with the piece of metal F and guides C and D
with the slotted and conically pointed rod K, which enters the outlet of the tap, cock
or inlet gas supply pipe, the whole being arranged as herein described and shown on
the drawings Figs. 1, 2 and 3.
2. The construction of gas ring or other shaped burners in which there is a
combination of the ring N with the piece of metal Q, and hollow rod R and with or
without the ring X, the whole being arranged as herein described and shown on the
drawings in Figs. 4, 5, 6 and 7.
1
1711 ... of Dogambar 1887