Improvements in the Construction of Atmospheric Gas Stoves.
Year: 1893

page_text: Date of Application, 24th Oct., 1893-Accepted, 19th May, 1894
COMPLETE SPECIFICATION.
Improvements in the Construction of Atmospheric Gas Stoves.
I, THOMAS BATTY of Colchester in the County of Essex Congregational
Minister 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 object is to provide a convenient and effective apparatus for warming rooms
with radiant heat from a small supply of gas by obtaining perfect combustion and
great additional heat by means of a regenerative expansion chamber in which the
gas & air are detained before ignition & expanded by the dilatation of heat.
I construct a mixing chamber A. A. Fig. 1. with a tube in the centre tapering
from two inches to half an inch. Up this tube B. the gas from an ordinary burner
passes into the upper part of the chamber A. A. taking with it at full pressure
about seven times its volume of air. The bottom half of the said chamber is
slotted radially C. C. from the base, and as the gas forces its way upward it is
driven through the fine slots C. C. where it is ignited & consumed on the outside
of the chamber. The slotted burners are so placed that all the heat is directed to
play upon the mixing chamber in which the gas & air are detained & expanded to
two or three times their volume. By this means they are most perfectly mixed
and a large addition is made to the radiant heat given off from the surface of the
stove while the escape of unburnt gas & poisonous fumes is prevented.
For warming bed-rooms &c. I apply this method of construction by making a
stove of globular shape (Fig. 1.) which may be easily attached like an ordinary
globe to any gas-fitting & it converts the light into heat. The globe may be made
of thin steel or fire-proof porcelain and when placed on a bracket or pendant
fitting passing five or six feet of gas per hour becomes a powerful stove for quickly
warming rooms. The bevelled shape of the globe deflects the heat downward and
warms the room at the floor-level.
For offices and sitting rooins I construct in a similar manner a portable stove of
cylindrical shape Fig. 2. which is placed on the floor & supplied with gas by means
of a flexible tube. A cylinder B. B. of thin steel or fire-clay is made about
3 inches in diameter & 12 inches long & is slotted with fine knife cuts or.
perforations on the lower side as shown in section Fig. 2. and in the middle is
placed a tapering tube (C.) through which the gas passes into the upper part of
the mixing chamber & forces itself through the narrow slots or perforations where
it is ignited & consumed. This central tapering tube forms also a foot by which
the cylinder may be fastened to any convenient stand (D. D.) as shown in Fig. 2.
A plain or ornamental hood A. A. about six inches in diameter is placed over the
cylinder for the purpose of deflecting the heat downwards, and at the ends two
knobs E. E are placed which fix the hood to the stove & form handles by which
the stove can be moved from place to place.
The same method of construction is applied to upright stoves suitable for fire
grates Fig. 3 & 4. A curved shaped mixing chamber A. A. Fig. 3. is made above the
burners C. C. which are all placed in front to throw the heat forward & it is
deflected downward by the curved top of the chamber A. A. The gas enters the
mixing chamber by the jet tube B. & takes with it about 7 times its volume of air.
The continual pressure of the gas forces the mixed air & gas through the perforated
or slotted burners C. C. where it is consumed. While detained in the mixing
chamber A. it is expanded to 3 times its volume by the dilatation of heat arising
from contact with the burners C. C. & the radiant heat produced is proportionately

page_text: increased. If desired asbestos or some other incandescent material is used to
produce a bright front fire.
Having now particularly described & ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that I claim is
:-
1. The construction of an atmospheric gas stove of globular shape easily
attached to an ordinary gas fitting having slotted burners in the lower half of the
globe & having an expansion chamber placed above & in contact with the burners,
for the purpose of warming rooms as substantially herein described & shown in
Fig. 1.
2. The construction of a portable gas stove of cylindrical shape with slotted
'burners on the under part of the cylinder with an expansion chamber in the upper
part and with suitable hood to deflect the heat downward on the floor of a room
as substantially herein described and set forth in the accompanying drawings
Fig. 2.
3. The application of the same mode of construction to gas fires fixed in
ordinary grates as substantially herein described & set forth in drawings
Fig. 3 & 4.
THOS. BATTY,
Applicant.