Improved Apparatus for Moving Ignots or Blooms into Position for Passing through the Rolls of Rolling Mills.
Year: 1888

page_text: Date of Application, 25th July, 1888
Complete Specification Lelt, 26th Nov., 1888
Complete Specification Accepted, 8th Jan., 1889
Improved Apparatus for Moving Ignots or Blooms into Position for
Passing through the Rolls of Rolling Mills.
I, DAVID DAVY, of Park Iron Works, Sheffield, in the County of York, Engineer,
do hereby declare the nature of this invention to be as follows:-
This Invention relates to improvements in apparatus for moving ingots or blooms
into position for passing through rolling mills.
The apparatus is of the kind described in the specification of former Letters Patent
granted to me dated July 22nd 1886 No. 9515; and the present invention has for
its object to enable flat blooms to be turned on edge, or laid down flat, at any part
of the rolls, and to render the apparatus available for turning square ingots, blooms,
or billets, into the required position to suit the different grooves in the rolls during
the process of rolling.
The lever arms are connected to slides worked by steam or hydraulic cylinders,
as in the former case; and the invention consists in making the lever arms of Y form,
the principal centre of oscillation, that is to say the point at which the connecting
rods from the sliding crosshead worked by the upper cylinder is jointed to them,
being situated a little below the point of bifurcation. The bifurcated arms form a
sort of cradle to receive the bloom, ingot, or billet and are intended to act on the
bloom from opposite sides or in opposite directions, or to hold it cornerwise in the
case of an ingot, bloom, or billet, of square section for the purpose of running
through the V grooves of the rolls. These arms being at about 90° to each other,
the bloom if oblong in section may be turned from the flat to the edgewise position
or vice versa, by a motion of the lower arm of the levers through an arc of 90° (45°
at each side of the vertical) or if of square section, may be turned cornerwise by a
motion of the levers through an arc of 45°, and without the aid of a fixed fence, as
in the former case, so that the operation may be performed at any part of the feed
rollers.
The operative cylinders are provided with valves whereby their pistons may be
caused to move in the same or opposite directions simultaneously or independently,
according as the levers are required to be moved bodily across the set of feed rollers

page_text: in either direction, for the purpose of moving the ingot or bloom in a direction
transversely to its length, or to be oscillated on their principal centre or fulcrum for
the purpose of giving the desired turning or tilting motion to the bloom. The tilting
operation is performed by admitting water to the lower cylinder and locking the
fulcrum of the levers by confining the water in the upper cylinder. If steam,
instead of hydraulic, power be used in the operative cylinders, a water-controlling
cylinder would be used in connection with the levers for the purpose of locking
their fulcrum.
D. DAVY.
By A. M. & Wm. Clark,
53, Chancery Lane, London,
. Patent Agents.
COMPLETE SPECIFICATION.
Improved Apparatus for Moving Ingots or Blooms into Position for
Passing through the Rolls of Rolling Mills.
I. DAVID DAVY, of Park Iron Works, Sheffield, in the County of York, Engineer,
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 improvements in apparatus (applied in connection with
the feed rollers of a rolling mill) for traversing an ignot or bloom laterally upon
the feed rollers. into position for passing through the different grooves of the
rolling mill.
The apparatus is of the kind described in the specification of former Letters Patent
granted to me dated July 22nd 1886, No. 9515; and the present invention has for
its object to enable flat blooms to be turned on edge or laid down flat at any part of
the rolls and to render the apparatus available for turning square ingots, blooms, or
billets, into the required position to suit the different grooves in the rolls during the
process of rolling.
The apparatus, like that described in the specification of my former patent, consists
of a set of two or more levers projecting up between or in front and rear of the
feed rollers in such positions as to act on the ingot or bloom in a direction at right
angles to its length. These levers are connected to slides worked by steam or
bydraulic cylinders, as in the former case; and the invention consists in making the

page_text: levers of Y form so that the bifurcated arms constitute a sort of cradle to receive the
bioom, ingot, or billet, and act on it from opposite sides or in opposite directions or
hold it cornerwise (if of square section) for the purpose of guiding it through
the V-grooves of the rolls.
Reference is to be had to the accompanying drawings forming part of this specifi-
cation wherein figure 1 represents a sectional front view of a rolling mill (for rolling
blooms of square section) one of the set of forked lovers being shewn and the other
being supposed to be directly in line with and in front of or behind, the one shown.
Figures 2 and 3 shew the said lever in different positions. Figure 4 is a similar
view to figure 1, of a mill for rolling blooms of oblong section, the forked lever
being of modified construction. Figure 5 is an edge view, and figure 6 a section, of
the lever on line 1-1 figure 4. Figure 7 is a section on line 2—2. Figure 8
illustrates the purpose of the modification as applied to blooms of square section.
The same letters of reference indicate like parts in all the figures.
As in the specification of my former patent, A is one of the ordinary set of feed
rollers upon which the ingot or bloom I is received preparatory to being passed or
repassed between the pair of mill-rolls B, all these being of the ordinary form and
operated in the usual way.
O is one of a set forked or Y-shaped levers working across the set of feed rollers,
the levers, which move together as one, being at a suitable distance apart to act on
the bloom, and for that purpose projecting upwards between or otherwise in relation to
the feed rollers. Each lever is pivoted, at a point a situated near its bifurcation, to
slide blocks D working along guides E situated between two of the feed rollers and
parallel thereto. The slide blocks D of the levers are connected by links f with a
common cross-head F worked by a steam or hydraulic cylinder, as in my former
specification, whereby the slide blocks D and levers C may be traversed quite across
the set of feed rollers A from or beyond the one side to or beyond the other.
lower arms of the forked levers C are directly connected by links g to another cross-
head G worked by another cylinder parallel to the first, the general operation of
which is similar to that described in my former specification.
The
The arms cc of each lever are about 90° to each other, so that when the one arm
is horizontal the other will stand up vertically for the purpose of traversing the
bloom bodily sideways along the feed rollers in the one direction or the other, as
shewn in full and dotted lines in figure 1, either arm being thus caused to stand up
by a motion of the lower arm c¹ through an arc of 90° (45° at each side of the vertical)
for turning the bloom. Or a bloom of square section may be held cornerwise for
the purpose of passing it through V grooved rollers, as shown in figure 3. As the
bloom rests in the arms c as in a cradle, the operation of turning it may be performed
without the aid of a fixed fence, as described in my former specification, and may
therefore be done at any intermediate point of the rollers although in some cases the
fences would still be retained, as shewn at H figure 4, to assist in keeping the bloom
in an edgewise position.
Each lever may be in one piece, as shewn in figure 1, but it may be constructed of
two members CC, as shewn in figures 4 to 7, pivoted together on the fulcrum d,
each member comprising one arm c and one-half of the lower arm c¹ and being
independently movable about the fulcrum d in the one, but not in the other, direction.
That is to say the arm c of the one, may approach the arm c of the other, lever but
motion in the opposite direction is prevented. For this purpose the link g is connected
to a pair of arms g¹ pivoted upon the fulcrum pin d and received between the lower
arms c', as shewn in figure 7, so that in whichever direction the arms gl may be moved
for the purpose of oscillating the forked lever they will carry with them the arm c
which is to be acted on for the purpose of tilting the bloom, the two members c c and
the arms g' then acting together as one. The object of this divided construction is to
enable the forked levers to pass underneath the bloom in case of need in order to act on
the bloom in the desired direction.
'
Figure 8 represents the forked lever in the act of thus passing underneath the
bloom from the dotted position shewn at the right hand side thereof. It will be seen

page_text: that as the forked lever is moved bodily to the left, the back of the upright arm c
strikes the bloom and is tilted on the fulcrum d so as to pass under the bloom, as
shewn in the successive positions to the right hand side thereof, where, as soon as it is
clear of the bloom, it is caused to assume its proper upright position at the left hand
side of the bloom, owing to the preponderance of weight of the tail end c¹.
The operative cylinders are provided with valves whereby their pistons may be
caused to move in the same or opposite directions simultaneously or independently,
according as the levers are required. to be moved bodily across the set of feed rollers
in either direction for the purpose of moving the ingot or bloom in a direction
transversely to its length, or to be oscillated on their principal centro or fulcrum for.
the purpose of giving the desired turning or tilting motion to the bloom. The tilting
oporation is performed by admitting water to the lower cylinder and locking the
fulcrum of the levers by confining the water in the upper cylinder. If steam, instead
of hydraulic, power be used in the operative cylinders, a water-controlling cylinder
would be used in connection with the levers for the purpose of locking their
fulcrum.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is
The herein-described construction of the levers of the herein-described ingot or
bloom-traversing apparatus for rolling mills that is to say with double or bifurcated
upper arms adapted to receive the ingot or bloom between them and to act thereon
from opposite sides or in opposite directions, substantially as, and for the purposes,
specified.
Dated this 24th day of November 1888.
D. DAVY.
By A. M. & Wm. Clark,
53, Chancery Lane, London,
Patent Agents.
D. DAVY.
By A. M. & Wm. Clark,
53, Chancery Lane, London,
Patent Agents.