Year: 1894

page_text: Date of Application, 12th Mar., 1894-Accepted, 5th May, 1894
A communication from CHRISTIAN WILLE, of Hanover-Linden, Empire
of Germany.
I, Alfred JulIUS BOULT of 323 High Holborn in the County of Middlesex,
Chartered Patent Agent, 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 device for smokeless combustion in stoves consists essentially as illustrated
in the accompanying drawings, of a cover p placed above the fire-chamber F,
turning on a pivot b with a free central opening; the said cover being operated
from the outside of the stove by a regulating lever pivotted to a suitable support,
in combination with an arm a link t and arm h² in such manner that as shown the
damper may be held fast either in the closed or horizontal position or in the open
vertical position as shown respectively in Figs. 2 and 3, or, if required half-opened,
intermediately between the two. The perforated cover may be arched in form as
shown in the drawings, in order that, if the fire-chamber should by chance be
overcharged, the fuel may be pressed inwards to the centre of the opening, so as to
assure the proper closure of the fire-space. The cover itself consists preferably
of a shaped and moulded plate of refractory material (chamotte) encircled by a
grooved iron frame into which it is pressed so as to form an integral part thereof.
The fuel-feed door f is connected with the regulating hand-lever h by means
of the link and arm in such manner that when the door is opened the
cover p is also opened and vice versa, so that during the charging of the stove
the cover offers no hindrance. The cover and door may at any moment be
temporarily disconnected, if desired, by the simple dislodgement of a joint-pin.
The fuel-feed door independently of the said opening and closing device, is
also provided with an adjustable air opening s'.
Furthermore, the rock-shaft a of the hand regulating lever his connected with
the adjustable louvre-grating r of a door f at the lower part of the fire chamber
by means of the arın h rod or link and lever h, in such manner that when
the cover p and fuel-feed door f are opened the louvres of the vertical grate are
closed and vice versa, the object being to cut off the supply of air from beneath
during charging, and re-instate it subsequently for the combustion of the fuel.
Figures 4 and 5 represent this vertical louvre-grating r when open and closed,
respectively.
After the kindling of the fire the louvre-grating remains open until the mass of
the fuel-charge has become incandescent, when it is closed; and thereafter the
heated fire-chamber F serves to volatilise and convert into gas all the subsequent
charges of the stove, inasmuch as if the supply of air from beneath is cut off, the coal
only undergoes a coking process. The gasified hydrocarbons and other gases would
escape by the chimney in the form of smoke, were not fresh air conveyed to them
by the sliding-valve of the door f. On the escape of the combustion products from
the fire-chamber F by the central aperture of p they are thoroughly consumed in the
combustion-chamber, properly speaking.
By this arrangement thoroughly complete combustion is attained; as a consequence
of the coking the formation of cinder is prevented, and, as the result of thorough
combustion, only a powdery almost white ash is found in the ash-box; while no
soot accumulates in the chimney, whence no smoke at all issues, or, if any, only a
very light scarcely visible vapour.

page_text: Having now particularly described and ascertained the nature of this said
invention as communicated to me by my foreign correspondent, and in what manner
the same is to be performed, I declare that what I claim is :-
1. The combination with a stove of a perforated cover such as p placed above the
fire-chamber and separating it from the combustion chamber, the said cover being
adjustable by means of levers arms and rods such as hht a fuel-feed door fin
the wall of the combustion chamber provided with a regulating valve s¹ a link t
arm h³ by which the door is operated simultaneously with cover p by hand-lever h
a vertical louvre-grater in the wall of the fire-box so arranged as to be adjustable
and operated or regulated by arm and lever hand and rod t which connect it
with the hand-lever h in such manner that the opening of the fuel-feed door f lifts
the perforated cover p and closes the louvre-grater and vice versa and the door f
and louvre-grater can be moved and adjusted independently of each other and of
the cover p.
2. In a stove having separate fire and combustion chambers the combination of a
fuel-feed door giving access to the combustion chamber and a perforated cover
separating the fire and combustion chambers so connected together that by one
movement the fuel door and the cover are opened to give access to the fire chamber
substantially as described and illustrated in the accompanying drawings.
3. In a stove having separate fire and combustion chambers the combination of a
movable fuel feed door giving access to the combustion chamber a movable
perforated cover separating the fire and combustion chambers and an air admission
valve to the fire chamber so connected together that by one movement the fuel door
and the cover are opened to give access to the fire chamber and the air admission
valve to the fire chamber is closed substantially as described and illustrated in the
accompanying drawings.
4. The combination and arrangement of parts constituting the complete stove
substantially as described and illustrated in the accompanying drawings.
Dated this 19th dox of March 1801
W. P. THOMPSON & BOULT,
London, Nottingham, Liverpool, and Manchester,
Agents for the Applicant.
W. P. THOMPSON & BOULT,
London, Nottingham, Liverpool, and Manchester,
Agents for the Applicant.