Improvements in Furnaces, Stoves, and the like.
Year: 1890

page_text: Date of Application, 4th July, 1890-Accepted, 30th Aug., 1890
COMPLETE SPECIFICATION.
Improvements in Furnaces, Stoves, and the like.
I ELIJAH BIRDSALL WOOLSTON, of Marlton, in the County of Burlington and State of
New Jersey, United States of America, Doctor of Medicine and Surgery, do hereby
declare the nature of my invention for IMPROVEMENTS IN HEATERS, 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 a central-draft heating stove, and it has for its object the
more thorough and complete combustion of fuel. With these ends in view my inven-
tion consists in the peculiar features and combinations of parts more fully described
hereinafter, and pointed out in the claim.
In the accompanying drawings, the reference letter a denotes the main body portion
of any ordinary heating-stove, furnace, or similar heater, and b a horizontal grate
located within it. This grate is provided with a central opening c, surrounded by a
vertical cylinder d, having its upper portion provided with openings e.
A conical or
similarly-shaped deflector is placed over the upper end of the cylinder to deflect the
fuel around the central cylinder. This cap also acts as a shield to keep the fuel in the
feeder g from becoming overheated by the incoming air, which otherwise might pass
directly up into the feeder.
The feeder is located directly above the air-cylinder d which has its upper end
closed by the top h, so that the air is made to pass out laterally through the openings.
Now in this arrangement it will be seen that the air within the central cylinder
becomes highly heated by the surrounding fuel, thereby creating a strong draft and
supplying such a large amount of oxygen that the fuel becomes thoroughly heated
and perfectly consumed. The inflowing air passes out through the perforations in a
lateral direction and enters the fuel within the fire-pot m at a point beneath the over-
hanging edges of the cap, as shown by arrows.
The supply of air to the central chamber is regulated by means of the damper i,
which commands the lower end of the cylinder, and is operated by a laterally-extending
rod j, having a handle k upon its outer extremity. It is evident that many slight
changes which might suggest themselves to a skilled mechanic could be resorted to
without departing from the spirit and scope of my invention; hence I do not limit
myself to the exact construction shown; but,―
Having now particularly described and ascertained the nature of my said inven
tion, and in what manner the same is to be performed I declare that what I
claim is :-
The combination, in a stove, or similar device, of a fire-pot provided with a grate
having a central opening, a cylinder arranged in coincidence with the opening and
having a series of perforations around its upper portion, a cap or deflector placed over
its upper end and having its lower portion extending over the vertical sides of said.
cylinder, and a rotary damper commanding the lower end of the cylinder, all arranged
in the manner and for the purpose substantially as described.
Dated this 4th day of July 1890.
F. W. BARKER,
Applicant's Agent.