A NEW OR IMPROVED HEATING STOUR ST
Year: 1883

page_text: LETTERS PATENT to Arthur Challis Kennard of Falkirk in the County of
Stirling North Britain for an Invention of A NEW OR IMPROVED HEATING
STOUR
PROVISIONAL SPECIFICATION left by the said Arthur Challis Kennard
at the Office of the Commissioners of Patents on the 17th October 1883.
ARTHUR CHALLIS KENNARD of Falkirk in the County of Stirling North Britain
"A NEW OR IMPROVED HEATING STOVE"
My invention relates to a construction of heating stove whereby I am enabled
to utilise almost the whole of the heat of combustion by causing the hot products
to circulate through chambers exposing a large conducting and radiating surface,
these chambers being so arranged as to be accessible throughout their interior for
cleansing, and being so connected with each other and the discharge flue that, by
means of suitable dampers, a direct passage can be given for the products of
combustion to the flue, when required for starting or moderating the action of the
stove. For this purpose, I provide an externally ribbed combustion chamber lined
with refractory material and furnished with a feeding door at the top and with an
adjustable air supply orifice at the bottom. From the upper part of the combustion
chamber there is a direct passage to the discharge flue, but this passage is in free
communication laterally with several successive metal chambers, each presenting,
like the combustion chamber, external ribs or fins so as to give increased radiating
surface, and each divided by partitions into three compartments which communicate
at the bottom. In the direct passage at the top are fitted throttle valves which
can be turned so as either to give free passage to the flue, or to interrupt the
direct passage, so that the products of combustion are caused to circulate down the
middle and up the side compartments of the first chamber, down the side
compartments of the second chamber which communicate at the top with the side
compartments of the first, up the middle of the second chamber, and so on till they
reach the flue by a zig-zag route. Obviously the directions of the currents might
be inverted or varied to suit the number and positions of the several chambers.
At the top of each chamber there is a cleaning orifice closed by a removeable cover
placed in a sand joint, and also at the lower parts of the chambers there are
cleaning orifices closed by hinged doors

page_text: "
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Arthur Challis Kennard in the Patent Office on the 16th April
1884.
ARTHUR CHALLIS KENNARD of Falkirk in the County of Stirling, North
Britain. "A NEW OR IMPROVED HEATING STOVE
"
My invention relates to a construction of heating stove whereby I am enabled
to utilise almost the whole of the heat of combustion by causing the hot products
to circulate through chambers exposing a very large conducting and radiating
surface, these chambers being so arranged as to be accessible throughout their
interiors for cleansing, and being so connected with each other and the discharge
flue that, by means of suitable dampers, a direct passage can be given for the
products of combustion to the flue when required for starting or moderating the
action of the stove. For this purpose, I provide an externally ribbed combustion
chamber lined with refractory material and furnished with a feeding door at the
top and with an adjustable air supply orifice at the bottom. From the upper part
of the combustion chamber there is a direct passage to the discharge flue, but this
passage is in free communication laterally with several successive metal chambers,
each presenting, like the combustion chamber, external ribs or fins, so as to give
increased radiating surface, and each divided by partitions into three compartments
which communicate at the bottom. In the direct passage at the top are fitted
throttle valves which can be turned so as to either give free passage to the flue, or
to interrupt the direct passage, so that the products of combustion are caused to
circulate down the middle and up the side compartments of the first chamber,
down the side compartments of the second chamber (which communicate at the
top with the side compartments of the first), up the middle of the second chamber,
and so on till they reach the flue by a zig-zag route. Obviously the directions of
the currents might be inverted or varied to suit the number and positions of the
several chambers. At the top of each chamber there is a cleaning orifice closed by
a removeable cover placed in a sand joint, and also, at the lower parts of the
chambers, there are cleaning orifices closed by hinged doors.
Fig. 1 of the accompanying drawings is a side view, fig. 2 is a longitudinal
section and fig. 3 is a transverse section on X X of fig. 4 which is a sectional plan
of the upper part of a stove according to my invention. A is the fire box internally
lined with refractory material and having externally projecting ribs to give
increased radiating surface. A¹ is the feeding door at the top and A' is the door
for giving access to the lower part of the fire box and for regulating the air supply.
From the upper part of the fire box at B a direct flue passage extends to the
chimney outlet B₁, and this passage communicates with a series of chambers having
central compartments C¹ C &c, each extending down to the bottom of the stove
and there communicating laterally with a compartment D1 D2 &c at its one side
and also with a compartment E¹ E &c at its other side. Each succeeding pair of
these side compartments communicate at the top, for example D' with D³,
D' with D, E with E' and E' with E. In the passage B to B are placed valves
or dampers F, which may be turned so as to open direct passage from the fire box
Or the valves may
to the chimney, as may be required on first kindling the fire.
be turned to the position shewn in fig. 4, so as to close the direct passage, the
hot products of combustion being thus caused to circulate down and up the
compartments C D and E of the several chambers, as indicated by the arrows.
These chambers are preferably made with external projecting ribs G for the
purpose of increasing the radiating surface. At the top of each chamber having

page_text: its three adjacent compartments for instance C'D' and E¹, there is a cover H
which has a lip entering a groove so as to form a sand joint. Also, at the bottom
of each pair of succeeding chambers and on each side, for instance D1 and D' or
E and E, there is a door K. By removing the covers H and opening the doors K,
complete access is given to the interiors of all the chambers for cleaning. Fig. 5 is a
front view and fig. 6 a side view, fig. 7 is a longitudinal section and fig 8 a sectional
plan of a stove of smaller size and more simple arrangement than that previously
described, having only one chamber in three compartments, two D and E at the
side down which the hot products of combustion descend from the fire box
outlets B; and one central compartment Cup which they ascend to the chimney
outlet B'. Fig. 9 is a front view, fig. 10 a section on X X, fig. 11 a section on Y Y
and fig. 12 a section on Z Z, and fig. 13 is a sectional plan of the upper part of a
stove having three partitioned chambers arranged at the sides and back of the
fire-box A. The course of the products of combustion is indicated by the arrows,
at the one side from the fire box by the passage B* down D', up D', down D³ and
up C to the chimney outlet B¹ and similarly at the other side.
In figs 5 to 8 and in figs 9 to 13, the parts corresponding to those described with
reference to figs. 1 to 4 are marked by similar letters.
Having thus described the nature of my invention and in what manner the
same is to be performed, I claim―
The construction and use of a heating stove wherein a fire box is arranged in
combination with sets of vertical partitioned chambers, through which the hot
products of combustion are caused to descend and ascend, these chambers having
covers and doors giving access to them, substantially as herein described with
reference to the accompanying drawings.
In Witness whereof, I the said Arthur Challis Kennard have hereunto set my
hand and seal this Ninth day of April, in the year of our Lord, one thousand eight
hundred and eighty-three
תנזווIB
זזת.
THUR CHALLIS
תזוזות
(cam)