An Improvement in Heating Furnaces.
Year: 1895

page_text: Date of Application, 25th Mar., 1895
Complete Specification Left, 10th Dec., 1895-Accepted, 11th Jan., 1896
PROVISIONAL SPECIFICATION.
An Improvement in Heating Furnaces.
I, DOUGLAS VICKERS a Managing Director of Vickers Sons & Company
Limited, Sheffield, do hereby declare the nature of this invention to be as.
follows:-
This invention relates to the construction of a furnace specially adapted for
heating or reheating blooms, faggots, ingots or other pieces of iron or steel, the
furnace having an extended hearth, and being so arranged that while heated pieces
are successively removed from it, pieces to be heated are successively fed into it,
and subjected to the heat for a considerable time.
For this purpose, the furnace chamber is made somewhat in the form of a horse
shoe, that is to say it is a segment considerably greater than a semi-circle of an
annular chamber closed at both ends of the segment by doors; the fire is situated
at the side of the chamber next the one of these doors by which the heated pieces
are taken out of the chamber, and the chimney is situated at the side next the
other door by which the pieces to be heated are introduced into the chamber.
Thus the flames and hot gases sweep through the chamber from near the one
door to near the other. The floor or hearth of the furnace is an annular turntable,
preferably supported on a central hydraulic cylinder so that it can be raised or
lowered a little.
The stationary furnace chamber, has at its inner and outer peripheries rings of
metal extending down into annular troughs formed on the revolving floor, these
troughs being charged with sand or with water to prevent access of air between
the floor and the walls of the chamber.
Should any adhesion take place of the floor to the walls, the floor can be
lowered a little so as to separate the adhering parts, and can be raised again to
position by means of the hydraulic cylinder on which it is supported.
The piece to be introduced into the chamber for heating is placed on the segment
of the turntable floor exposed between the two doors and, as soon as a hot piece is
wanted at the mill hammer or other machine, the doors are raised and the turntable
floor is turned through a small angle. By this operation the piece to be heated is
passed into the furnace, and the already heated piece is passed out to be picked up
by a crane or otherwise.
Thus a continuous succession of pieces pass in at the door next the chimney,
travel round step by step and become hotter till they emerge fully heated from the
door next the furnace.
Dated this 25th day of March 1895.
ABEL & IMKAY,
Agents for the Applicant.

page_text: An Improvement in Heating Furnaces.
I, DOUGLAS VICKERS, a Managing Director of Vickers Sons & Company
Limited, Sheffield, 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 the construction of a furnace specially adapted for
heating or reheating blooms, faggots, ingots or other pieces of iron or steel, the
furnace having an extended hearth, and being so arranged that while heated pieces
are successively removed from it, pieces to be heated are successively fed into it, and
subjected to the heat for a considerable time.
For this purpose I construct the furnace as I shall describe referring to the
accompanying drawings. Fig. 1 is a vertical section and Fig. 2 is a sectional plan
on the line of Fig. 1.
The furnace chamber A is made somewhat in the form of a horse shoe, that is to
say it is a segment considerably greater than a semicircle of an annular chamber
closed at both ends of the segment by doors B'B' covering arched openings lower than
the vault of the chamber. The fire C is situated at the side of the chamber next
the one of these doors B¹ by which the heated pieces are taken out of the chamber,
and the chimney D is situated at the side next the other door B2 by which the
pieces to be heated are introduced into the chamber.
Thus the flames and hot gases sweep through the chamber from near the one
door to near the other. The floor or hearth of the furnace is an annular turo-
table E preferably supported on a central hydraulic cylinder F so that it can be
raised or lowered a little.
The stationary furnace chamber has at its inner and outer peripheries rings of
metal G and H extending down into annular troughs formed on the revolving floor,
these troughs being charged with sand or with water to prevent access of air
between the floor and the walls of the chamber.
Should any adhesion take place of the floor to the walls, the floor can be lowered
a little so as to separate the adhering parts, and can be raised again to position by
means of the hydraulic cylinder F on which it is supported.
The piece to be introduced into the chamber for heating is placed on the
segment K of the turntable floor which is exposed between the two doors and, as
soon as a hot piece is wanted at the mill hammer or other machine, the doors B¹ B²
are raised and the turntable floor is turned through a small angle. By this
operation the piece to be heated is passed into the furnace through the opening
at B2 and the already heated piece is passed out by B' to be picked up by a crane
or otherwise removed.
Thus a continuous succession of pieces pass in at the door next the chimney,
travel round step by step and become hotter and hotter till they emerge fully
heated from the door next the furnace.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
A heating furnace constructed and operating substantially as described with
reference to the accompanying drawings.
Dated this 10th day of December 1895.
ABEL & IMRAY,
Agents for the Applicant.