Improvements in Furnaces for Melting, Heating, or Annealing Metals, Metallic Alloys, and the like.
Year: 1894

page_text: Date of Application, 13th June, 1894
Complete Specification. Left, 3rd Aug., 1894-Accepted, 8th Sept., 1894
PROVISIONAL. SPECIFICATION.
Improvements in Furnaces for Melting, Heating, or Annealing
Metals, Metallic Alloys, and the like.
I JAMES JOHN WILLIAM CARR, of Woodland Works, Smethwick, in the
County of Stafford, Bell and. Brass Founder do hereby declare the nature of this
invention to be as follows:-
This invention relates to improvements in the construction and arrangement of
furnaces for melting, heating or annealing metals, metallic alloys and the like, .
and more particularly having relation to the furnace shown. and described. in
Specification No. 2486 of 1880.
It consists primarily in providing an improved arrangement of flues leading.
from the said furnace; also improved facilities for removing, and replacing burnt
or worn brickwork from or near the combustion part of the furnace; also the
general improved construction of the casing for the furnace.
I make the casing of wrought iron or steel plates so as to be much lighter than
the cast iron now in use. Four of such plates are used cousisting of back and
front and the two sides, which are suitably bolted together. Two of such plates,
(say side plates) are furnished with vertical angle iron strips which are rivetted or
bolted (former preferred) along their edges,, and extend downwards, to sorve as
legs to support the whole at a suitable height from the ground. At their lower
ends these strips are suitably shaped to serve as feet thereto. To the other angle
surface of these strips are bolted the front and back plates, thus forming the
corner connections.. The bearers for carrying the fire bars are carried upon
brackets. (formed upon or rivetted to the side plates) or angle strips, having, an
open. horizontal and verticali slot in which latter the bearers rest.
At the bottom of the: side. and front and back plates are prepared projections
or brackets upon which are carried. plates around the inside of the casing to
support the brickwork lining, such. brickwork being carried close up to the casing,
for allowing a space between it and the casing as may be desired. At about half
way in the height of such brickwork. I provide similar projections or lugs or other
convenient device to support a second set of plates which shall support the brick-
work above them so that if it.is found necessary at any time to remove and renew
such lower part of the lining it may be done without disturbing the upper part.
This may be effected from below or from. the upper (interior) part of the furnace,
but preferably I provide that in one or more of the casing plates an opening, shall
be made, so that through such opening or openings the necessary, brickwork repairs
shall be readily effected. This hole is then covered by a plate being bolted to the
main plate.
Again. Hitherto such furnaces, have been provided' with one ceutral back flue
leading to chimney; but instead of this: I provide near the top of the furnace or
smaller flue one upon each side.leading from the furnace and afterwards meeting.
together or passing independently on to the chimney. This divides the flames as
they pass upwards, and by so doing effects a better distribution of heat, and lessens
the escape of heat into the flues and thus economizes fuel. Suitable ironwork is
made upon the upper part of the casing to carry the extended brickwork necessary
to form. these side flues. Thus by these means much economy both in fuel' and
also in brickwork lining is effected while the construction is further such as to

page_text: present less liability to breakage, ready removal of bearers and bars, when in use
if required, and easily taken to pieces for transit in a portable form.
Dated this 12th day of June 1894.
CHARLES T. POWELL,
Applicant's Agent.

page_text: apper (interior) part of the furnace, but preferably I provide that in one or more
of the casing plates an opening 28, shall be made, so that through such opening or
openings the necessary brickwork repairs shall be readily effected. This hole is
then covered by a plate 29, being bolted to the main plate.
Again. Hitherto such furnaces have been provided with one central back flue
leading to chimney; but instead of this, I provide near the top of the furnace two
smaller flues 30, 31, one upon each side, leading from the furnace 34, and after-
wards meeting together or passing independently on to the chimney flue 32. This
divides the flames as they pass upwards in the furnace, and by so doing effects a better
distribution of heat, and lessens the amount of escape of heat into the flues and thus
economizes fuel. Suitable ironwork 33, is made upon the upper part of the casing
to carry the extended brickwork necessary to form the side flues. Thus by these
means much economy both in fuel and also in brickwork lining is effected while the
construction is further such as to present less liability to breakage, ready removal
of bearers and bars, when in use if required, and easily taken to pieces for transit
in a portable form.
Having now particularly described and ascertained the nature of this my said
invention, and in what manner the same is to be performed, I declare that what I
claim is
1. The improved combination and arrangement of the flues as herein described
and illustrated, that is to say the flues 30 and 31, with the furnace 34 and
chimney 32, substantially as set forth.
2. The combination with such furnaces of the intermediate lining supporting
plate or plates 27, carried upon lugs or projections 26, substantially as and for the
purposes shown and specified.
3. The general combination of the constructional arrangement of the side and
back and front plates, with the angle iron supports, bearers and bars, and lining
plates, substantially as described and illustrated.
Dated this 2nd day of August 1894.
CHARLES T. POWELL,
12, Cherry Street, Birmingham, Applicant's Agent.