improvements in Open-hearth Steel-melting Furnaces, and Regenerative Furnaces generally.
Year: 1894

page_text: Date of Application, 10th' Dec., 1894
Complete Specification. Left, 11th Apr., 1895-Accepted, 11th May, 1895
PROVISIONAL SPECIFICATION.
improvements in Open-hearth Steel-melting Furnaces, and
Regenerative Furnaces generally.
We SYDNEY JESSOP ROBINSON, and SAMUEL POPE both of Messrs. Wm.
Jessop & Sons Ld. Brightside Works, Sheffield, the former: Managing Director,
and the latter Siemens Manager, do hereby declare the nature of this invention to
be as follows
This invention relates to improvements in the construction and arrangement of
the ports or conduits for admitting gas and air into the furnace for combustion.
It consists in constructing the gas port which opens into the furnace in the usual
in a central position, and in arranging the air ports or conduits on each side
of the gas port, and converging towards its mouth in such a manner as to direct the
air which issues therefrom upon the stream of gas, so as to cause the air and gas to
mix, and effect quick combustion with a saving of fuel.
manner,
In carrying out the said improvement the furnace roof is not carried over the
said ports and this arrangement enables us to more readily get at the port covers
and the adjacent parts than heretofore for repairs and the like.
Dated the 8th day of December 1894.
ROBT. F. DRURY, C.P.A.,
Bank. Buildings, George Street, Sheffield, Agent for Applicants.
Improvements in Open-hearth Steel-melting- Furnaces, and
Regenerative Furnaces generally.
We, SYDNEY JESSOP ROBINSON, and SAMUEL POPE, both of Messrs. Wm.
Jessop & Sons, Ld., Brightside Works, Sheffield, the former Managing Director,
and the latter Siemens Manager, do hereby declare the nature of this invention
and in what manner the same has to be performed, to be particularly described and
ascertained in and by the following statement :-
Our invention relates to improvements in the construction of gas heated furnaces,
and refers more particularly to the arrangement of gas and air ports or conduits
which convey and admit the gas and air into the furnace chamber, and to the parts
of the furnace adjacent thereto, with the object of producing a more rapid and
complete combustion, and to render such parts more accessible than heretofore.
These improvements are illustrated in the annexed sheet of drawings, in
which :-
Fig. 1, represents elevation of an open hearth furnace for steel melting.
Fig. 2, plan of same with the roof removed.
Fig. 3, transverse section through 1, 2, 3, 4, in Fig. 1.
Fig. 4, transverse section through 5, 6, in Fig. 1.
In carrying out our invention in the construction of a furnace as shown in the
drawings, we construct the gas conduit and port G, which opens into the furnace
chamber, in the usual manner, aud preferably in a central position as shown.
This

page_text: conduit and port is in communication with any suitable gas producer. The air
ports or conduit terminals A, are arranged one on each side of, but a little above
the gas port G, and converging towards the mouth of the gas port in such a manner
that the heated air issuing therefrom is directed from both sides full upon the
stream of gas as it issues and rises from the gas port G, intermingling therewith in
such a manner as to effect perfect combustion, and resulting in a considerable saving
of fuel.
In carrying out the above described construction and combination of the gas and
air ports marked G, and A, we do not build the roof R, of the furnace over the said
ports as is usual in such furnaces and which necessitates the removal of a portion
of same whenever the said ports require examining or repairing, but we terminate
the roof R, at or about the point P, at each end and we cover the open tops of the
conduit terminals and ports with suitable removable coverings such as the blocks or
slabs S, which can be readily removed to permit the said conduits and ports to be
viewed or repaired.
The remaining parts of the furnace such as the bridge plate B, the air passage C,
charging doors D, floor F, are old.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is
11
1. In a gas heated furnace, the combination with a gas port G, of two air
ports A, which rise above and converge towards the gas port, for the purpose of
causing the issuing streams of gas and air to intermingle substantially as set
forth.
2. In a gas heated furnace, the combination of a central gas port G, with
converging air ports A, closed upon their top side with a readily removable
covering, and a roof R, which extends over the furnace chamber, but not over the
ports, substantially as and for the purpose specified and as shown.
Dated the 10th day of April 1895.
ROBT. F. DRURY, C.P.A.,
7
Bank Buildings, George Street, Sheffield, Agent for Applicants.