Year: 1897

page_text: Date of Application, 17th Feb., 1897-Accepted, 29th May,
1897
We, WILLIAM HENRY PECK, and DAVID REED W. PATTERSON, of Pittsburg,
in the County of Allegheny, and State of Pennsylvania, United States of America,
Merchants, 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 invention relates to certain new and useful improvements in furnaces, and
has for its object to construct a device whereby the smoke will be entirely consumed
before it reaches the stack; furthermore, the utilization and developement of all
the units of heat, and to prevent the fire coming in direct contact with the
boiler.
A further object of the invention is to construct a furnace as above described,
wherein equally as good results may be obtained from coal, oil or gas, the peculiar
construction securing a higher degree of heat and retaining the same, than is
accomplished by the ordinary construction.
A still further object of the invention is to construct a furnace combining the
above advantages which will be extremely simple in its construction, strong,
durable, effectual in its operation, and comparatively inexpensive to manufacture;
furthermore, a furnace whereby the grate bars may be dispensed with if so
desired.
With the above and other objects in view, the invention finally consists in the
novel construction, combination and arrangement of parts to be hereinafter more
specifically described, and particularly pointed out in the claims.
In describing the invention in detail, reference is had to the accompanying
drawings forming a part of this specification, and wherein like letters of reference
indicate similar parts throughout the several views, in which :-
Fig. 1, is a front elevation of our improved furnace, partly in section to show
the throats and manner of securing the rings.
Fig. 2, is a side elevation of a boiler with the supporting walls and casing in
section.
Fig. 3, is a view of a portion of the supporting wall and rings or casing.
Fig. 4 is a transverse section showing the application of the rings to a Cornish
boiler.
In these drawings, a, represents the boiler, b, the line or supporting wall, said
boiler being provided with lugs c, c, to engage the wall b, as in the ordinary
construction, to support the boiler. At the inner side of the line or supporting
wall b, is a supporting wall or brace d, having an inwardly projecting lug or flange e,
abutting against the casing f, provided around the boiler. This casing, is
preferably formed of fire brick clay in a semi-circular shape, and is provided with
a flange g, at the top of each side and rests on the braces or inner side wall d, said
casing being formed in sections, each section being grooved or recessed as shown
at h, so as to permit the one section to lap on the adjacent one, the joints being
filled with cement or other suitable material to make the same fire-proof. An
arched wall h¹, is supported by the front wall 2, and the bridge wall j, covering
the combustion chamber i, and a similar wall ', is supported at the rear of the
partition k, k, and by the rear wall ', these two walls serving to support the
casing f, at the front and rear of the partitions, the said partitions forming throate
112 031

page_text: or passage ways 1, 1, from the combustion chamber to the retort m, the grate bars
are designated by the reference letters n, n, and may be constructed and supported
in any of the well known manners, and a series of air ducts o, o, are arranged from
the front of the furnace to the throats, admitting sufficient air to form a perfect
combustion.
The operation of our improved furnace will be readily apparent from the views
of the same that we have shown in the drawings, and a more concise description of
the same is deemed unnecessary, but we desire to point out some of the many
advantages obtained by the use of the same, first among which is the fact that by
our improved construction, the fire is prevented from coming in direct contact with
the boiler, the flame striking the casing f, heating the same, and producing a
uniform and continuous heat between the casing and the boiler, and by reason of
the increased combustion converting the smoke by the time it reaches the retort to
a gas, which passes in at the flues at the rear of the boiler, and through the same
to the smoke stack.
The casing is adapted to be placed a short distance (say two inches) from the
boiler, thus obtaining and maintaining a much greater degree of heat, and further
the boiler is preserved by reason of the flame being prevented from coming in direct
contact therewith, resulting in a prevention of any sudden expansion or contraction
of the boiler, increasing the combustion, and reducing the smoke to a gas before it
reaches the flues.
By reason the high degree of heat entering into and retained by the casing
constituting the covering of the boiler, the heat is retained uniform and constant
throughout in its action on the boiler thereby obtaining the aforesaid results and by
the covering of the grate bars with the fire brick or other suitable material, will
permit of coal, oil or gas being used in the furnace with equal results.
Our construction of a furnace is particularly adapted to the use of powdered
coal fed to the furnace by a blast, by which an intense degree of heat is obtained
the boiler by reason of the casing being amply protected from the high degree of
heat, and by our arrangement and construction, the change to lump or slack coal,
or to oil or gas can be readily and quickly made as provision has been made for
the grate bars.
We also desire to call attention to the fact that this construction of a furnace
may be particularly adapted for use on the Galloway, Cornish, and marine
boilers as well as upon the type of boilers we have shown herein, the general
principle of the construction being particularly the same for the above mentioned
boilers.
It will be noted that various changes may be made in the details of construction,
without departing from the general spirit of my invention.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that
what we claim is :-
1. In a furnace, the casing for the boiler, said casing composed of fire brick clay
or other suitable material, and supported by side walls forming passage ways beneath
the boiler, substantially as shown and described.
2. In a furnace, a semi-circular casing formed in sections over-lapping each
other and supported by a lug or flange engaging in the side wall, said lug or flange
extending in close proximity to the boiler shell to hold the casing in position,
substantially as shown and described.
3. In a furnace, the casing around the boiler, arched walls, partitions and side
walls for supporting the same, side partitions forming throats or passage ways and
a series of air inlets to the said throats to complete the combustion, substantially
as shown and described.
4. In a furnace, the boiler provided with a casing supported by side walls,
partitions arranged underneath said casing to form passage ways from the com-
bustion chamber, a series of flues or ducts leading to said passage ways, and arched

page_text: walls over the combustion chamber and retort reducing the smoke to a gas before
the same reaches the flues, substantially as shown and described.
5. In a furnace, a casing surrounding the boiler said casing formed in sections
over-lapping each other and supported by partitions, side walls and a flange, said
flange engaging in the side walls and extending towards the boiler to hold same in
position, substantially as shown and described.
Dated this Twenty-second day of January AD 1897
WILLIAM H. PECK.
DAVID R. W. PATTERSON.