Improvements in Stoves.
Year: 1899

page_text: Date of Application, 13th June, 1899-Accepted, 22nd July, 1899
COMPLETE SPECIFICATION,
[Communicated from abroad by ABBOT AUGUSTUS LOW, citizen of the United
States, residing in City of New York, Borough of Brooklyn, County of
Kings and State of New York, Merchant, doing business at 31, Burling
Slip, New York City, N.Y.]
Improvements in Stoves.
I, WILLIAM HENRY BECK, of 115, Cannon Street, in the City of London,
Consulting Engineer and 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:-
"6
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My improvements are designed more particularly for use in conjunction with
what are known as box stoves in which wood is principally burned as fuel.
The invention is designed to attain more perfect combustion, and to regulate
and control the combustion within the fire chamber so that the fuel contained
therein may be burned gradually, from front to rear, when so desired, or the
whole mass of fuel be subjected to ignition from end to end, as in ordinary wood
burning stoves, if preferred. The invention consists in the special construction
and arrangement of parts hereinafter set forth and claimed.
In carrying out my invention I do not confine myself to any special form or.
construction of stove, but herein by way of illustration show the principle applied
to any ordinary wood stove of the box " class.
In the accompanying drawings,
"
Figure 1, is a top view of the stove provided with my flue plate; Figure 2,
a similar view with the flue plate removed; Figure 3, is a similar view of a
stove provided with my improvements showing the flue plate and cover swung
back at right angles to the stove; Figure 4, is a vertical central longitudinal
section; Figure 5, is a horizontal section upon plane of line 5, 5, Figure 4.
A, is the stove body enclosing the fire chamber B, and provided with the usual
door C, damper D), and ash pit cover E. F, is a thimble to which the stove pipe
is ordinarily applied when the stove is used without my attachments.
G, is the ordinary cover or top plate of the stove, provided with the holes g g¹,
and cover or covers 9, and being formed with a lateral extension ³, having a
stud 9, engaging with a recess go, said stud being designed to facilitate the
swinging outward of the plate G, and the extension being designed to support
the plate when so turned, as illustrated in Figure 3.
In applying my improvements to the store I attach the auxiliary thimble
plate H, to the rear of the stove top by means of clamps or bolts h¹, h, or by
equivalent means that will sustain said auxiliary thimble plate against displace-
ment. This auxiliary thimble plate H, is formed with the supplementary
thimble h, to which the stove pipe is applied.
I, is a flue plate fitting over and preferably resting upon the cover G, and also
fitting into or against, and forming a continuation of the auxiliary thimble
plate H.
It will be seen that the auxiliary thimble plate H, creates a flue space h²,
around the ordinary pipe thimble F, and that this space h², communicates with
the flue space i, in the fiue plate I, the sides and front wall of which enclose and
define the said flue space.
Provided in the wall of the flue i, for the purpose of controlling the admission

page_text: of air to the flue i, to effect the combustion of gases and carbon entering the
flue i, from the combustion chamber especially through the openings 9, 9¹, in
the top plate G, is a damper 22.
The flue plate 1, is formed with the holes 22, 23, closed by covers *, and the
ordinary thimble F, is closed by means of a special cover f, excepting when it
is desired to use the stove with a direct draft as under old conditions before the
application of my attachments. It is also formed with handles, by which
it may be bodily lifted from the cover G, when desired.
By way of illustrating the practical operation of my invention we will suppose
the parts to be in position with the smoke opening F, closed by cover f. The
combustion chamber having been charged with fuel the second hole g¹, in the
top plate G, is also closed with a cover g³, and the holes 2, 3, in the flue I, closed
with covers, 4. The fire being started under these conditions air for com-
bustion will enter primarily through the damper D, at the front and bottom
of the stove, the products of combustion passing upward through the opening 9,
where they encounter a secondary supply of air admitted through the supple-
mentary damper 2, in the flue plate I, thereby insuring the ignition of the hot
combustible gases and solids arising from the combustion chamber B. The final
products of combustion pass from the flue i, through the thimble plate H, into
the smoke pipes. Under these conditions the combustion of fuel will necessarily
be restricted mainly to the front portion of the chamber B, and the ignition of
fuel in the rear portion of the chamber will be prevented, or at least materially
retarded.
When the fuel in the front of the fire chamber B, is nearly consumed, or when
it is desired to extend the area of combustion further rearward, the cover g³,
is removed from the hole g¹, and placed upon the hole g, when the products of
combustion will pass into the flue i, through the opening g'; or if preferred both
the openings 7, 9, may remain uncovered, the resulting admixture of fresh air
with the unconsumed products of combustion tending to insure the perfect con-
sumption of the fuel prior to the escape of the products of combustion from the
flue i, into the pipe attached to the thimble h.
It is obvious that by the manipulation of the various dampers and covers
modified results may be attained, the position and extent of the fire being thus
subject to regulation. the essential feature in this connection being the direction
and control of the draught or induced air, and the attainment of practically
complete combustion, by means of the primary damper, the plurality of openings
in the stove and flue plates and the covers therefor, in conjunction with the
auxiliary flue provided with the auxiliary damper for admitting air to the hot
but unconsumed products of combustion.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be operated, I declare that what
I claim is:-
In a box stove the combination of the stove body A, formed with the smoke
opening F. the cover f. for closing said smoke opening F, the pipe thimble
plate H. rigidly attached to the stove body, the primary swinging top plate G,
provided with holes g, g¹, and covers g, the auxiliary flue plate I, upon the top
plate G, fitting to the open side of the thimble plate H, and formed with open-
ings, and damper ¹, for admitting air to support combustion, and the
covers,, the whole arranged and operating substantially in the manner and
for the purpose described.