Improvements in Puddling, Melting, Heating, and other Furnaces.
Year: 1892

page_text: Date of Application, 6th Aug., 1892-Accepted, 10th Sept., 1892
COMPLETE SPECIFICATION.
Improvements in Puddling, Melting, Heating, and other Furnaces.
We, DANIEL PARRY of 114 Coleman Street Wolverhampton, Iron Works
Manager, and BARNABAS FREDERICK KELLY of Wellington House, Bilston,
Gentleman, both in the County of Stafford, do hereby declare the nature of our said
invention and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement:—
Our invention has for its object improvements in puddling melting heating and
other furnaces, by which we are enabled to economise fuel to a considerable extent in
a most simple and inexpensive manner and without the aid of injectors fans blowers
or any other mechanical aid.
In order that our invention may be clearly understood and more easily carried
into practice we have appended hereunto two double-sized sheets of drawings upon
which we have shown our improvements applied to an ordinary beating furnace and
from which their application to other furnaces will be readily understood by any
practical furnace builder.
Figure 1, is a sectional plan of a heating furnace taken just above the doors on
line 5-6 Figure 3.
Figure 2, is a longitudinal part section through the same furnace on line 1—2.
Figure 3, is a cross section on the line 3-4.
In carrying our invention into effect we build our furnace such as shown for
illustration in the accompanying drawings with the fire place A heating chamber B
ash pit D and bridge E with surrounding walls F and plates K in the usual way,
the fire hole being at J and the door to heating chamber at H.
A
Upon one side of the furnace we form the horizontal flue P which runs the full
length of the heating chamber and may either be formed in the brickwork or with a
cast iron square or tube lining as shown and this flue is turned up vertically at pl
where it stands up with the open end p³ for the admission of a current of air.
similar flue P is formed at the fire end and turned round along the remaining
portion of the length of the furnace obtaining air at one end from a vertical flue
at p and another similar flue is provided which is built in above the fire door at P4
and obtains its air from a vertical flue at p. The other ends of the horizontal
flues P and P are connected with the vertical flue T and the end of the flue P' with
vertical flue T which is carried up and over the top of the furnace at T2 thus
collecting all the air from the flues P, P³, & P, into a position immediately above
the apertures which are formed in the crown of the furnace close to and on the
fire place side of the bridge E. The flue T above the crown may be formed of a
channel section iron, as shown cased with brickwork or it may be formed of brick-
work alone and we may use more or less of the flues P, P³, & P, as may be desired.
The flues instead of being turned up vertically may be continued through the brick-
work and plates K in an horizontal direction until they project out at the side of the
furnace with an open end for the admission of air.
We thus obtain a current of air which becomes heated in its passage along the
flues and which being carried over the furnace passes through the crown so as to be
concentrated upon the unconsumed gases as they rise from the fire to the bridge by
which means the heated air and unconsumed gases are thoroughly and effectively
mixed as they pass the bridge with the result that a thorough combustion of these
gases is thereby obtained and an increased heat through the whole length of the
furnace is the natural result.
We are aware that heated air has been caused to pass through perforations in the
crowns of furnaces previously but such arrangements have proved a failure by

page_text: reason of the heated air being brought to bear upon the unconsumed gases in a
scattered or wrong position and by an imperfect current of heated air.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
In puddling melting heating & other furnaces the air flues in combination with
the apertures substantially such as and for the purpose herein set forth and shown
upon the accompanying drawings.
Dated this ith dow of An 1900
GEORGE BARKER,
77, Colmore Row, Birmingham, Agent.