PROVEMENTS IN PUDDLING AND HEATING FURNACES AND OTHER FURNACES USED IN THE MANUFACTURE OF IRON AND STEEL, AND IN STEAM BOILER FURNACES
Year: 1877

page_text: PROVISIONAL SPECIFICATION left by Frank Deeley and John Garbett
IM-
at the Office of the Commissioners of Patents on the 11th December 1877,
FRANK DEELEY, of Brierley Hill, in the County of Stafford, Millwright, and
JOHN GARBETT, of Brierley Hill aforesaid, Bricklayer and Furnace Builder.
PROVEMENTS IN PUDDLING AND HEATING FURNACES AND OTHER FURNACES USED
IN THE MANUFACTURE OF IRON AND STEEL, AND IN STEAM BOILER FURNACES."
Our Invention consists of the improvements herein-after described in the con-
struction of puddling and heating furnaces and other furnaces used in the manu-
facture of iron and steel, and also in steam boiler furnaces, whereby a portion of
the gases ascending the stack or chimney of the furnace is returned to the fire-place
part of the furnace, and there mingling with the fresh air re-enters the furnace."
By this arrangement part of the gaseous matter leaving the furnace by the stack
or chimney is passed a second time through the furnace, and any unburned fuel
contained in it is utilized.
We will describe our Invention as applied to a puddling furnace used in the
manufacture of iron and steel. Near the top of the furnace stack or chimney, and
on opposite sides thereof we make two openings, and in the sides of the furnace near
the fire-place end we make two openings. The openings in the stack we connect
with those in the sides of the furnace by pipes or tubes, preferably of sheet iron.
At convenient points in these tubes we place dampers or valves, by which the said
pipes can be more or less closed at pleasure, and the quantity of gas passing through
them regulated.
By the combustion in the furnace a powerful ascending current of the products
of combustion and gaseous matter from the furnace is produced. This gaseous
current, when the damper at the top of the stack or chimney is raised to its full
extent, passes into the atmosphere, but when the damper at the top of the chimney
or stack is lowered so far as to obstruct more or less the ascending current part of
it descends the tubes described and re-entering the furnace any unburned gaseous
fuel contained in it is burned.
Considerable saving in fuel results from the use of our Invention.

page_text: The dampers or valves in the tubes in conjunction with the damper at the top
of the chimney or stack give the workman complete control over the working of
the furnace.
Although we prefer to employ two pipes for receiving the gaseous matter from
opposite sides, of the stack near the top, and for delivering it into the furnace at
opposite sides, yet we do not limit ourselves to the use of two pipes, nor to the
precise points at which the gaseous matter is taken from the stack and delivered
into the furnace, as these details may be varied to suit the particular furnace to
which our Invention may be applied.
The application of our Invention to furnaces used in the manufacture of iron and
steel other than puddling furnaces and its application to steam boiler furnaces
differs in no essential respects from its application to puddling furnaces.