IMPROVEMENTS IN FURNACES FOR HEATING AND WELDING TUBES, AND FOR OTHER PURPOSES OF HEATING."
Year: 1881

page_text: LETTERS PATENT to William Dutton, of Walsall, in the County of Stafford,
Manager, and Moses Croft, of the same Place, Furnace Builder, for an Invention
of "IMPROVEMENTS IN FURNACES FOR HEATING AND WELDING TUBES, AND
FOR OTHER PURPOSES OF HEATING."
PROVISIONAL SPECIFICATION left by the said William Dutton and Moses
Croft at the Office of the Commissioners of Patents on the 1st April 1881.
WILLIAM DUTTON, of Walsall, in the County of Stafford, Manager, and Moses
CROFT, of the same Place, Furnace Builder. "IMPROVEMENTS IN FURNACES FOR
HEATING AND WELDING TUBES, AND FOR OTHER PURPOSES OF HEATING."
This Invention consists in constructing furnaces in such manner that by
introducing currents of heated air above the furnace bed it is caused to mingle
with the smoke and consume the same, thus allowing slack to be used in place of
coal. With this view we construct a furnace with hollow side walls or flues therein,
which flues conduct air from below the bed of the fire or ash hole, whence it is
conducted over the crown of the furnace, and by apertures in the crown it is
brought down into and amongst the smoke and gases, causing their complete
combustion, and generating extreme beat, which is carried away by any suitable
duct or flue into the heating or welding chamber. A perforated casting of inclined
bars is fixed at the feed hole to send the fresh fuel onto the hot fire.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said William Dutton and Moses Croft in the Great Seal Patent Office on
the 22nd September 1881.
WILLIAM DUTTON, of Walsall, in the County of Stafford, Manager, and MOSES
CROFT, of the same Place, Furnace Builder. "IMPROVEMENTS IN FURNACES FOR
HEATING AND WELDING TUBES, AND FOR OTHER PURPOSES OF HEATING."
This Invention consists in constructing furnaces in such manner
that by
introducing currents of heated air above the furnace bed such heated air is caused
to mingle with the smoke and gases, producing more perfect combustion, and thus
allowing slack to be used in place of larger coal.
With this view we construct a furnace with hollow side walls or pipes or flues
constructed within such walls, which flues convey hot air from below the bed of
the fire or ash hole, whence it is conducted by the flues over the crown of the
furnace, and by apertures in the crown is brought down into and amongst the
smoke and gases, causing their complete combustion, and generating extreme heat,
which may be conveyed by any suitable duct or flue into the heating or welding
chamber. A perforated casting of inclined bars is fixed at the feed hole to send the
fresh fuel onto the hot fire.
Having thus described the nature of the said Invention, and in what inanner the
same is to be performed, we claim, the improvements in furnaces in which hot air
is conveyed from beneath the bed of the fire over and through the crown of the
furnace by means of hollow walls, pipes, or flues, and thence into the heating or
welding chamber, as herein more fully set forth and specified.
In witness whereof, we, the said William Dutton and Moses Croft, have
hereunto set our hands and seals, this Seventh day of September, in the
year of our Lord One thousand eight hundred and eighty one.
WILLIAM DUTTON.
MOSES CROFT.
(L.S.)
(L. S.)