Improvements in Puddling Furnaces.
Year: 1893

page_text: Date of Application, 21st Mar., 1893-Accepted, 29th Apr., 1893
COMPLETE SPECIFICATION.
[Communicated from abroad by JACOB ROBERTS, of Catasauqua, County of
Lehigh, State of Pennsylvania, United States of America, Horseshoe
Manufacturer.]
Improvements in Puddling Furnaces.
I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co., Patent Agents
45 Southampton Buildings in the County of Middlesex, do hereby 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 relates to puddling furnaces and it consists essentially of the
combination with the furnace of ports or ducts for admitting air or oxygen in the
top or roof of the puddling or heating chamber and ports or ducts for admitting
air or oxygen to the rear and near the bottom of the puddling or heating chamber.
It is an important feature to introduce the air or oxygen at the bottom as well
as at the top of the puddling or heating chamber, as it obviates what is generally
termed a cutting flame, which is liable to injure the iron or other metal in the
furnace.
In the accompanying drawing,
Figure 1 is a side elevation of a furnace embodying the improvement. Figure 2
is an end view. Figure 3 is a transverse longitudinal section.
Referring by letter to the drawing, A designates the wall or casing of the furnace
having the fire chamber A' in its front end, and the puddling or heating chamber A'
rearwards of the fire chamber. The fire chamber is provided with the usual grate a
and ash pit a', and a passage for the products of combustion is established between
the fire chamber and puddling or heating chamber through the opening a³ over the
bridge wall A'.
The puddling or heating chamber A² communicates with an uptake or flue A*.
The above describes the general construction of a furnace. The following
describes the invention as connected therewith.
B designates an air or oxygen box, here shown as extending across the roof b of
the furnace. Ports b' extend through the roof b and provide a passage for air or
oxygen to the chamber A. The ports 6', it will be observed, enter the puddling
or heating chamber some distance rearwards of the bridge wall A³, and direct the
air or oxygen directly downwards into the puddling chamber.
Air or oxygen may be introduced under suitable pressure through a pipe b'
entering the box B and provided with a suitable valve b³.
Other streams of air or oxygen are forced under suitable pressure, into the
puddling or heating chamber A through ports or ducts 6. These ports or ducts b*
enter the chamber A' through its rear wall and near its bottom 6, adjacent to the
uptake.
The ports or ducts, as shown herein, may communicate with pipes or flues B
extending along the upper part of the furnace and down the rear portion, in which
event the air or oxygen will be heated before it is admitted to the chamber A'.
The pipes or flues B will communicate with a suitable supply apparatus through the
pipe B provided with a cut off valve 6º.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, as communicated to me by my
foreign correspondent, I declare that what I claim is :
1. A furnace having a fire chamber and puddling or heating chamber partially
separated by a bridge wall, ports or passages for air or oxygen communicating
with the puddling or heating chamber at its top and rearwards of the bridge wall,
CD

page_text: and directing the air or oxygen directly downwards into the puddling or heating
chamber and ports or passages for air or oxygen communicating with the rear
portion of said puddling or heating chamber near its bottom, substantially as
specified.
2. A furnace having a fire chamber and puddling or heating chamber, partially
separated by a bridge wall, ports or passages for air or oxygen communicating with
the puddling or heating chamber at its top and rearwards of the bridge wall, and
directing the air or oxygen directly downwards into the puddling or heating
chamber, ports or passages communicating with the rear portion of said puddling
or heating chamber near its bottom and pipes or flues extending along the walls of
the furnace and communicating with said last named ports or passages, substantially
as specified.
Dated this 21st day of March 1893
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.