GAS AND PETROLEUM STOVES
Year: 1886

page_text: Date of Application, 18th Sept., 1886.
Complete Left, 11th July, 1887.
Complete Accepted, 19th Aug., 1887.
I HENRY HARRISON DOTY, Gentleman of 446 Strand W.C. in the County of
Middlesex do hereby declare the nature of my invention for GAS AND PETROLEUM
STOVES to be as follows:-
My Invention relates to improvements in Gas and Petroleum Stoves for heating
purposes, and consists in the construction combination and arrangement of different
parts of heating Stoves and burners well known to the Trade, but constructed and
arranged by me in such a manner as I believe to produce a more simple economical
and effective radiator of heat than has hitherto been known or made: And for this
purpose I construct two oblong square metal boxes each from eighteen inches to three
or more feet in length. And from six inches to twelve or more inches in debth.
And from six to twelve inches or more in breadth.-In or through the bottom of one
of these boxes, I make a series of round or square openings or holes of different
diameters, in which to insert the ends of round or square pipes or cylinders to make
a close fitting joint :-These pipes or tubes are beaded near their ends :-i.e., having
a bead thrown outward in such a manner as to prevent the pipes entering the box
more than half an inch:-Or the beading may be thrown out at a sufficient distance
from the ends to receive close fitting ornamental bases or collars and caps, which
when placed on the pipes, will leave the ends of the pipes projecting about half an
inch beyond the bases collars or caps, so that on being inserted in the openings in
the boxes, the tubes or pipes will be prevented from entering the boxes beyond the
required distance of half an inch, as the bases, collars or caps impinging against the
lower or upper surfaces of the boxes will arrest their further entrance.
I construct one central opening, preferably of an oblong square shape of larger
dimention than the others in which I insert a main pipe beaded like the others: This
pipe forms the heating or combustion chamber, in which I place a gas or mineral oil
burner In one side of this main or central pipe, I make an opening for a hinged
door; This door having openings in which I insert "Talc" to expose the light in the
chamber when burning-On the upper side of the other or lower box, I make a
serries of openings to correspond with those in the bottom of the first or upper box
Price Rd)

page_text: in which I insert the other ends of the pipes, both ends of which are left open, and
of a uniform length of one to three or more feet:-I make the central oblong square
or round opening, for the combustion chamber in both the upper and lower surfaces
of the lower box, so the central pipe will pass clear through the lower box leaving a
clear opening up through this box or pipe into the upper box so that the current of
heated air passing up through this heating pipe or combustion chamber will pass up
into the upper box when the two boxes are connected together by means of the pipes
or tubes. In this upper box I construct a deflector of metal, which is secured in the
center of the box over the upper end of the combustion pipe, to spread the current of
heated air, which will then pass down through the smaller tubes into the lower box,
from which it is carried off into the fire place and chimney of the Room.
When the boxes and pipes or tubes are put together, they are secured in their
places by means of four metal rods with threads cut on the ends, the lower ends of
which receive nuts which may serve as ornamental legs on which the stove may stand,
and the upper ends of the rods to receive nuts or ornamental caps:-These rods pass
up through both boxes inside the tubes (at or near the corners of the boxes) which
connect the two boxes together.
In order to utilize the maximum of heat generated in this stove I employ a "Bunsen"
or air and gas burner, or I employ an ordinary petroleum burner with one or more
wicks.
I close an ordinary fire place by a sheet of metal, leaving only a small opening
in which to insert the exhaust tube or pipe leading from the back of the lower box
when the stove is standing on the hearth within the ordinary fender :-
The gas is supplied to the burner through a pipe which passes through the lower
or upper box or both boxes, and through one of the radiating tubes or pipes, which
heats the gas to a high degree of temperature, and causes it to expand and prepares it
for a more complete and economical combustion before it passes into the burner
where it is mingled with a proper proportion of heated air, and is then consumed
according to the well known principle of "Bunsen," giving the maximum amount of
heat and in the most economical manner.
I also adapt this principle to a circular or a hemispherical form of stoves to stand
within a fender of a fire place or in Halls and Rooms so as to produce the same
effect and at the same time give an ornamental appearance to the fireplace.

page_text: 1, HENRY HARRISON DOTY of 446, Strand, London W.C. in the county of Middlesex,
Gentleman, 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 Invention relates to improvements in gas and petroleum stoves for heating
purposes, and the device according to my invention is constructed and arranged in
such a manner as I believe will produce a more simple, economical and effective
radiator of heat than has hitherto been known or made.
In order that my Invention may be the better understood I have appended the accom-
panying sheet of drawings in which Figure 1 is a sectional elevation of the device
drawn on line A. B. figure 3. Figure 2 is an end sectional elevation of the same,
drawn on line C. D. figure 1. Figure 3 is a horizontal section drawn on line
E. F. figure 4 and Figures 4 and 5 are respectively front and end elevations of the
improved stove.
In carrying out my invention I construct two rectangular metal boxes A. B., one
for the top and the other for the bottom of the stove, each of which would be, say
eighteen inches to three or more feet in length, from six to twelve inches or more in
depth and from six to twelve inches or more in breadth, or in like proportions
according to the requirements. In the under surface of the box A. and upper surface
of the box B I form a series of round or square holes, or openings c. c, figure 3 for
the insertion and close fitting therein of the ends of a corresponding number of round
or square tubes, pipes or cylinders C. C. Said pipes or tubes C. C. are beaded
outwards as at D. near their ends, so as to prevent the tubes or pipes C. from entering
the boxes more than about half an inch; or, the beading D may be thrown out at a
sufficient distance from the ends of said tubes or pipes C. to allow of the introduction
thereon, of ornamental bases, and collars or caps, which latter when placed upon the
pipes or tubes C. shall leave the ends thereof projecting about half an inch beyond
said bases, and collars or caps, so that upon insertion in the openings c in the boxes,
the tubes or pipes C. will be prevented from entering the boxes, beyond the requisite
distance of half an inch inasmuch as the bases, collars or caps impinging against the
under and upper surfaces respectively of the boxes A and B will arrest their further
entrance.
In addition to the tubes or pipes C. above referred to, I form openings e. preferably
of rectangular shape, centrally in both the top and bottom of the box of the box A,
for the reception of a similarly shaped main tube or pipe E, beaded in a similar
manner to that described in respect of the pipes or tubes C. Said pipe or tube E,
forms the heating or combustion chamber, within which is arranged a gas or mineral
oil burner F. On one of the sides of the main or central pipe E, an opening is formed

page_text: to which a hinged door G is adapted, in which latter is inserted a plate or sheet of
talc, or equivalent material, in order that the light in the chamber E. when burning,
may be exposed to view.
In the upper box A. and immediately over the combustion chamber E. I arrange
a deflector I. of metal, which is secured to the top of the box A. and is devised for
the purpose of distributing the current of heated air as it passes up from said com-
bustion chamber E. The two boxes A and B. and pipes C. and E. are secured together
in position by means of metal rods J. passing through the tubes C. at or near the
corners, and have screw threads cut on each end, to the lower parts of which are
screwed the nuts K, serving as ornamental legs to support the stove, the upper ends
being provided with ornamental finials L. In order to utilise the maximum amount
of heat generated in a stove constructed in the manner above described, I employ a
Bunsen or equivalent air and gas burner F. or I may use an ordinary petroleum
burner having one or more wicks.
.
When gas is employed, instead of the pipe N being arranged as shewn in full lines
in the drawing figures 1 and 2, it may, as indicated by the dotted lines N¹ in figure 1,
pass through the lower or upper box, or through both boxes, and thence through one
of the radiating tubes C., thus bringing the gas to a higher degree of temperature,
and causing it to expand, and preparing it for a more complete and economical com-
bustion before it enters the burner; where, mingling with a proper proportion of
heated air it is consumed according to the well known Bunsen principle, giving out
the maximum amount of heat in the most economical manner.
The air entering the pipe E at the lower end as indicated by the arrows, passes
upward, when, being obstructed in its passage by the deflector I, is distributed
throughout the upper box A, whence it passes into and down through the radiating
tubes or pipes C. as shown by the arrows figure 1. into the lower box B, from which
it is conveyed by the tube or pipe M figures 2, 3 and 5, into the fire place of the room
in which it is placed or into the open air.
In using the improved stove in an ordinary room, a sheet or plate of metal provided
with an opening for the reception of the exhaust pipe M is placed over the opening
of the grate, the improved stove being fixed in front thereof, and when constructed
to an ornamental and tasteful design, it imparts an attractive and elegant appearance
to the fireplace.
Having now particularly described and ascertained the nature of my said Invention
and in what manner the same is to be performed, I declare that what I claim is :-
The improved gas and petroleum stove, substantially as herein described and shown
in the accompanying drawings.