A New or Improved Gas Heater or Stove, applicable for Use with Ordinary Gas Brackets.
Year: 1896

page_text: Date of Application, 15th Dec., 1896-Accepted, 6th Mar., 1897
COMPLETE SPECIFICATION.
A New or Improved Gas Heater or Stove, applicable for Use with
Ordinary Gas Brackets.
We, JOHN WENDELL CARTER Inventor of No. 4084 Jefferson Avenue,
Brooklyn, and OTTO GOETZE, Commission Merchant, of No. 5 Remsen Street,
Brooklyn, New York, both in the United States of America, 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 a gas-heating device of that class which is applied
to the burner of a gas-bracket and which is based on the principle of the
"Bunsen burner" so that it burns with an exterior blue heating flame and which
can be lighted as soon as the gas is turned on and be turned off at any time
without causing any smell by escaping gas; and in which the gas and air-
mixture is supplied to the burner openings and the so-called "firing back"
entirely prevented and a perfectly safe, convenient, and powerful gas heater for
rooms obtained. The invention consists of a gas-heating stove applied to gas burners
comprising an interior shell provided with a cylindrical central portion a hemi-
spherical upper shell provided with a suitable handle and an exterior shell having
a central flue extending therein and open at the upper and lower ends said shell
being provided with openings for the flame and a suitable tripod for supporting the
heating device on the gas burner as will be fully described hereinafter and the
novel features thereof finally pointed out in the claims.
In the accompanying drawings:-
Fig. 1 represents a perspective view of this gas heating stove shown as applied
to a gas bracket.
Fig. 2 is a vertical central section of the same drawn on a somewhat larger
scale.
Fig. 3 is a detail horizontal section on line 3-3 Fig. 2.
Similar letters of reference indicate corresponding parts throughout.
Referring to the drawings-A represents an ordinary gas bracket or fixture and
B the burner of the same. On a suitable tripod C which is attached to the
pedestal of the burner is supported this gas heating stove or apparatus.
This gas heating stove consists advantageously of three main portions namely
an exterior hemispherical lower shell D having a small flaring base D₁ an interior
smaller shell E supported by the latter and which is provided with a central
cylindrical portion E which is open at the lower end and closed at the upper end
said closed end serving as a deflector for the gas and air-mixture supplied to said
central cylindrical portion and an exterior hemispherical upper shell F. The
upper part F of the exterior shell is spun of suitable sheet metal and provided with
a handle G at its upper end so that the entire device can be readily lifted off from
the gas burner or placed in position on the same. The inner shell E is sprung by
a circumferential flauge e at its upper edge into the circumferential head f formed
at the bottom of the upper shell F the circumferential head tightly closed in a
suitable manner so that the inner shell E and the outer lower shell are firmly
retained in position by the outer upper shell F.
The base D' is provided with a central flue D' arranged concentric to the burner
and the central cylindrical portion El so that the gas emitted from the burner tip
is mixed in its upward passage with the air drawn in through the flue D³ from the
outside and then passed around the upper edge of the flue D' into the annular

page_text: space between the interior flue of the outer shell and the cylindrical portion of the
inner shell E to the space between the lower part of the inner and outer shells E
and F until the gas and air-mixture is enitted through openings d in the middle
part of the outer lower shell D as shown clearly in Fig. 1. The outer shell may
be sprung tightly over the flue D2 and fit snugly against the base D' or it may be
rigidly attached to the flue. As soon as the escaping gas is lighted the air required
to be mixed with the gas is readily drawn in so that the escaping gas and air-
mixture burns with the blue heating flame of the well-known Bunsen burner forming
thus a number of jets around the outer burner by which one continuous sheet of
-blue heating flame is produced.
By this construction the dangerous accumulation of the explosive gas and air
mixture is prevented and the mixture conducted as quickly as possible to the jet
openings d so that the heater can be readily lighted as soon as the gas is turned on
while there is no gas in the heating device when the gas is turned off. By the
arrangement of the cylindrical portion E¹ of the shell E which acts in the nature
of a closed deflector the gas and air mixture is compelled to pass first in outward
and then in downward direction through the channel formed by the inner flue D
of the outer shell so that the gas and air mixture is heated up in its course to the
jet openings d and the perfect combustion of the gas and air mixture in connection
with the exterior air thereby obtained. As the entire surface of the gas heater is
heated contact with the air is obtained so that a very effective gas heating device is
furnished.
This gas heating device can be readily applied to any gas bracket without danger
producing a very efficient and economical gas stove for heating ordinary rooms.
No so-called "back firing" or "explosions "are produced in this heater as the gas
and air are thoroughly mixed in their course from the burner tip to the jet openings
in the outer shell and are thoroughly mixed and prevented from passing to the
interior of the body of the heater so that any experienced person can readily and
without danger use the heater.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. A gas-heating stove consisting of an outer cup-shaped shell provided with an
ascending flue extending upward from its bottom and open at both ends and
adapted to receive a gas pipe an inner cup-shaped shell disposed in said outer shell
and united therewith at its upper edge said inner shell being provided with a
descending flue closed at its upper end and surrounding said ascending flue
forming a mixing space between them a shallow mixing chamber being formed at
the lower part of the stove between said shells into which chamber said descending
flue opens, said outer shell being provided with jet openings substantially as set
forth.
2. A gas heating stove consisting of an outer cup-shaped shell provided with an
ascending flue extending upward from its bottom and open at both ends and
adapted to receive a gas pipe an inner cup-shaped shell disposed in said outer shell
and united therewith at its upper edge said inner shell being provided with a
descending flue closed at its upper end and surrounding said ascending flue forming
a mixing space between them a shallow mixing chamber being formed at the lower
part of the stove between said shells into which chamber said descending flue opens,
said outer shell being provided with jet openings and a dome-shaped top fitting
tightly over said cup-shaped shells substantially as set forth.
Dated this 11th day of December 1896.
TONGUE & BIRKBECK,
Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Applicants.