Improvements in Annealing Furnaces.
Year: 1889

page_text: This Specification was, upon the 6th day of April 1891, Amended under
Sections 18 to 21 of the Patents, Designs, and Trade Marks Act, 1883.
Date of Application, 26th Mar., 1889
Complete Specification Left, 9th Dec., 1889--Accepted, 15th Mar. 1890
PROVISIONAL SPECIFICATION.
Improvements in Annealing Furnaces.
We, ALFRED WILLIAM TURNER of Cobden Buildings Corporation Street Birming-
ham in the County of Warwick Mechanical Engineer and GEORGE TOMKINSON
Furnace Builder of 67 Parsonage Street Oldbury in the County of Stafford do
hereby declare the nature of this invention to be as follows:-
This invention consists in the following arrangement of parts forming and consti-
tuting an annealing furnace in which sheets castings, or other kinds of partly manutac-
tured metal can be placed for the purpose of annealing.
We build two side walls and two end walls forming an outer-room, the floor would
by preference be covered with bricks iron, or any other suitable material; within the
outer room we build two partition walls and one end wali forming an inner-room of
diminished dimensious.
The walls of the inner room would by preference be pierced or provided with a
series of holes or passages, the space between the outside of the walls of the inner
room and the inside of the walls of the outer room, may be of any suitable dimensions
by preference about one third of the width of the inner room.
In some cases in the space formed between the outside end wall face of the inner
room and the inside end wall face of the outer room, we form our fire or
furnace.
An arched roof is built to cover the inner and outer rooms, the arch rising from
the walls of the outer-room.
A suitable door or pair of doors is provided at the entrance end of the inner room;
flue passages are formed through the walls of the inner room, such flue passages
leading out through the floor or bottom of the outer-room and connected to suitable
flues, in conjunction with any ordinary chimney stack. Our improved annealing
furnace so constructed would be used in the following manner.
The sheets, castings, or other substance to be annealed would be passed through
the door or doors at the open end of the inner room and stacked or placed in the
inner room in any convenient manner, the doors would then be shut and a fire lighted
in the grate, provided between the outer back wall of the inner room and the inner
back wall of the outer-room.
The flames and heated gases would pass along the passages provided on each side
of the inner-room and would pass through the series of holes provided in the walls
of the inner-room and impinge on the material stacked in the inner room, the flames
and heated gases would pass out through the opening provided at the door end of the
inner-room wall and out through the floor of the outer room into flues connected
with main stack.
In some cases we dispense with the end wall of the inner room and provide a door
or pair of doors at each end of the inner room or annealing furnace, in such cases
we provide the furnace or grate underneath the floor of the outer room, the flames
and heated gases would then pass through holes provided in the floor of the outer-
room such flames and gases so introduced, would circulate between the inside of
the outer-room wall and the outside of the inner room wall and would pass through
CD77

page_text: the holes provided in the inner room wall, and afterwards pass out into the stack in
the manner hereinbefore described.
By the use of our improved annealing furnace constructed in the manner
herein before described, a great amount of heat can be obtained in the inner room by
the combustion of a comparatively small amount of coal or cheap slack consequently
sheets castings or other substances can be annealed in our improved furnace at a less
cost than by the use of an ordinary annealing fornace.
Dated this 25th day of March 1889.
ALFRED WILLIAM TURNER,
Cobden Buildings, Corporation Street, Birmingham,
Agent for the Applicants.
COMPLETE SPECIFICATION (AMENDED).
Improvements in Annealing Furnaces.
We ALFRED WILLIAM TURNER of Cobden Buildings Corporation Street Birming
ham in the County of Warwick Mechanical Engineer, and GEORGE TOMKINSON,
Furnace Builder of 67 Parsonage Street Oidhury, in the County of Worcester do
bereby 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 consists in the following arrangement of parts forming and consti-
tuting an annealing furnace in which sheets castings, or other kinds of partly manu-
factured metal can be placed for the purpose of annealing.
We build the two side walls and two end walls forming an outer room, the floor
would by preference be covered with bricks, iron, or other suitable material; within
the outer room we build two partition walls and two end walls forming an inner room
of diminished dimensions.
The walls of the inner room would by preference be as hereinafter described and
shewn are pierced or provided with a series of holes or passages, the space between
the outside of the inner room and the inside of the walls of the outer, may be
of any suitable dimensions, by preference about one third of the width of the inner
room.
In some cases in the space formed between the outside end wall face of the
inner room and the inside end wall face of the outer room we form our fire or
furnace.
An arched roof is built to cover the inner and outer rooms, the arch rising from
the walls of the outer room.
A suitable door or pair of doors is or are provided at the entrance end of the inner
room flue passages are formed through the walls of the inner room as hereinafter
described and shewn, such flue passages leading out through the floor or bottom of
the outer room and connected to suitable flues in conjunction with any ordinary
chimney stack. Our improved annealing furnace so constructed would be used in
the following manner.
The sheets, castings, or other substanco to be annealed would be passed through
the door or doors at the open end of the inner room, in any convenient manner, the
doors would then be shut and a fire lighted on the grate j provided between the outer
back wall of the inner room and the inner back wall of the outer room.
The flames and heated gases would pass along the passages provided on each side of
the inner room and would then pass through the series of holes y provided in the
walls of the inner room and impinge on the material stacked in the inner room, the
flames and heated gases would pass out through the openings k k provided at
the door end of the inner room wall, and out through the floor of the outer room
at, into the flue connected with main stack.
In some cases we dispense with the end wall of the inner room and provide a door

page_text: or pair of doors at each end of the inner room or annealing furnace, in such cases we
provide the furnace or grate underneath the floor of the outer room, such flamos and
gases would then pass through the holes provided in the floor of the outer room, so that
such flames and gases so introduced, would circulate between the inside of the outer
room wall and the outside of the inner room wall, and afterwards pass out into the
stack in the manner herein before described.
We will now proceed to describe the accompanying drawings and the manner in
which the same refer to our invention.
Figure 1 represents a sectional side elevation of furnace.
Figure 2 represents a sectional plan of figure 1.
Figure 3 represents an end view of figure 1, partly in elevation and partly in
section.
Similar letters refer to similar parts throughout the several views.
a represents the outside walls, 6 represents the end walls, c represents the floor of
fire chamber d represents the entrance door, e represents the fire brick casing
extending over the inner surface of anneal annealing chamber, f represents the
partition walls, g represents the holes pierced through the partition walls, h¹ repre-
sents the bridges over which the flames pass from the fire grate, k¹ represents
the outlet passages provided at the door end of inner room, 2 represents the flues
leading to chimney stack.
A fire being lighted (as set forth in provisional specification) on the fire grate, the
flames and heated gases would pass over the bridges h h into the space spaces
between the inner room and the outer room, passing onward through the holes g
thus directing a fierce accumulation of heat on to the material stacked in the inner
chamber, the spent flames or heated gases would then be drawn into the flue
passages, thence into the flue, and out at the stack, or into any other passage
where it may be convenient to direct it, either to pass into the outside atmosphere
or to be chemically or otherwise dealt with.
We wish in this our complete specification to direct attention to the essential
part of our invention viz. "that the passing of the whole of the heated gases and
Hames through the series of holes, will strain off: hold back: or consume the smoke
in a manner that cannot be accomplished when a portion of the flames and gases
are allowed to roll over the top of a partition wall built in the old style and terminating
some distance from the roof of inner room.'
"
Having now particularly described and ascertained the nature of our said inven-
ion and in what manner the same is to be performed, we observe that we are
ware that perforations have been used or proposed to be used in the walls of annealing
hambers so that there could be a current in one direction or from one side or end to the
ther and to this in itself we lay no claim but we declare that what we claim is
The making of an annealing furnace with the walls of the inner room built up to
he roof or top of the furnace, such inner walls being perforated with holes or
assages so that the flames and heated gases produced on the fire grate of the furnace
ill be compelled to pass through the perforations formed in the walls of such inner
pom in order to reach the flue or flues connected with the stack or other equivalent
eceiver all in the manner hereinbefore described and shewn in the accompanying
rawings.
Dated this 4th day of December 1889.
ALFRED WILLIAM TURNER,
Cobden Buildings, Corporation Street, Birmingham,
Agent for the Applicants.