IMPROVEMENTS IN PUDDLING AND HEATING FURNACES
Year: 1879

page_text: LETTERS PATENT to James Abbott, junior, of Ince, in the County of
Lancaster, Engineer, for the Invention of "IMPROVEMENTS IN PUDDLING
AND HEATING FURNACES."
PROVISIONAL, SPECIFICATION left by the said James Abbott at the Office
of the Coinmissioners of Patents on the 9th May 1879.
JAMES ABBOTT, junior, of Ince, in the, County of Lancaster, Engineer.
PROVEMENTS IN PUDDLING AND HEATING FURNACES."
"IM-
The object of the said Invention is to so construct the roofs or crowns of puddling
and heating furnaces that the products of combustion and heated gases shall be
directed on or caused to travel in direct contact with the whole of the surface of
the metal being puddled or treated.
The said Invention relates,-
First. To rocking or oscillating puddling furnaces in which the fire grate or
combustion chamber forms part of and moves with the furnace or hearth, and
consists in so constructing the roofs or crowns of such furnaces that the said roofs
or crowns shall be at the centre as low as or lower than at the sides, looked at
transversely..
The said arrangement of roof or crown causes the heated gases and products of
combustion to be directed on, or to travel in direct contact with the surface of the
metal being treated, and loss of heat is avoided.
Second. To furnaces generally, and consists in supporting one or more of the
longitudinal courses of brickwork from above by means of girders and hanging
bars or cramps. The brickwork is filled in from the supported courses to the sides,
or from one course to another, in any ordinary or desired manner. By the above
arrangement of construction 1 am enabled to make furnace crowns or roofs flat, or
nearly so, or arched downwards instead of upwards. The supporting girders and
hanging bars or cramps are above the furnace and are protected from the heat.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said James Abbott in the Great Seal Patent Office on the 8th November
1879.
JAMES ABBOTT, junior, of Ince, in the County of Lancaster, Engineer.
PROVEMENTS IN PUDDLING AND HEATING FURNACES."
"IM-
The object of the said Invention is to so construct the roofs or crowns of puddling
and heating furnaces that the products of combustion and heated gases shall be
directed on or caused to travel in direct contact with the whole of the surface of
the metal being puddled or treated.
The said Invention relates,―
First. To rocking or oscillating puddling furnaces in which the fire grate or
combustion chamber forms part of and moves with the furnace or hearth, and
consists in so constructing the roofs or crowns of such furnaces that the said roofs
or crowns shall be at the centre as low as or lower than at the sides, looked at
transversely.
The said arrangement of roof or crown causes the heated gases and products of
combustion to be directed on or to travel in direct contact with the surface of the
metal being treated, and loss of heat is avoided.
Second. To furnaces generally, and consists in supporting one or more of the
longitudinal courses of brickwork from above by means of girders and hanging bars
or cramps. The brickwork is filled in from the supported courses to the sides, or
from one course to another in any ordinary or desired manner. By the above
arrangement of construction I am enabled to make furnace crowns or roofs flat or
nearly so, or arched downwards instead of upwards. The supporting girders and
hanging bars or cramps are above the furnace, and are protected from the heat. .
DESCRIPTION OF THE DRAWINGS.
Fig. 1 is a transverse section, and Fig. 2 a longitudinal section of an oscillating
furnace constructed under the first part of my Invention. a is the crown of the
furnace curved downwards instead of upwards in the usual manner; b, key bricks
suspended by the rods c from the longitudinal curved metal bearer d; c, transverse
tie rods to resist the thrust of the arches f, f'. The body and remaining
portions of the furnace are constructed in the usual manner of rocking or
oscillating puddling furnaces.
Fig. 3 is a transverse section of a heating furnace of ordinary construction having
my improvements applied thereto and illustrative of the second part of my
Invention. Here there are two sets of key bricks b and three arches f, f', f³, thus
making the crown of the furnace almost flat.
Having now described and illustrated the said Invention in such manner that
others will be enabled to carry my improvements into effect, I claim,―
First. The improvements in the construction of rocking, oscillating, puddling, or
heating furnaces, substantially as set forth.
Second. The improvements in puddling or heating furnaces, substantially as set
forth.
In witness whereof, I, the said James Abbott, junior, have hereunto set my
hand and seal, this Seventh day of November, in the year of our Lord One
th
JAMES ABBOTT, JUNIOR. (L.S.)