IMPROVEMENTS IN GEAR FOR FEEDING AND TURNING STEEL INGOTS OR SLABS OR IRON BLOOMS IN CONNECTION WITH COGGING MILLS to be as follows:
Year: 1884

page_text: 1, JAMES RILEY, General Manager, to the Steel Company of Scotland Limited,
of 150 Hope Street, Glasgow, in the County of Lanark, North Britain do hereby
declare the nature of my said invention for "IMPROVEMENTS IN GEAR FOR FEEDING
AND TURNING STEEL INGOTS OR SLABS OR IRON BLOOMS IN CONNECTION WITH
COGGING MILLS to be as follows:-
"
My said Invention relates to cogging mills such as are used for reducing steel
ingots or iron blooms to slabs or masses of suitable form for subsequent treatment,
and my objects are to diminish the manual labor required and to expedite the
operation of the cogging mill.
In carrying out my Invention several horizontal feed rollers arranged in a
horizontal series are employed for feeding or moving the ingot, or bloom, or mass
of metal to and from the cogging rolls, these feed rollers being driven by bevil
wheels from a horizontal shaft which extends along one side of the machinery, and
which is driven in any convenient way admitting of quick reversing. The feed
rollers are spaced so that the ingot or mass may always rest on at least two of
them (excepting when passing between the cogging rolls) At the entering end of
the gear a cradle is provided for receiving the mass, which in the case of a steel
ingot, will be placed on it on end, being lifted out of the soaking pit by a crane
and swung round and lowered into the cradle. The cradle is then turned down
through a quarter of a circle to lay the ingot on its side upon the feed rollers one
of which acts on it through an opening in the back of the cradle; and the ingot is
then by the rotation of the feed rollers moved along out of the cradle and forward
to the middle pass of the cogging rolls. The cradle is mounted on a rocking shaft
and is moved by means of a lever fixed thereon and connected to the piston rod of
an hydraulic cylinder.
After going through the middle pass of the cogging rolls the ingot or slab is
moved back again to a position upon the feeding rollers where it is turned up on
edge for the purpose of being passed on edge through the second pass of the
cogging rolls which pass is at one side of the middle pass. This turning on edge is
accomplished by means of levers or arms moving between the feed rollers and
worked by hydraulic cylinders acting through connecting rods and levers, or
through chains and sectors. In turning the slab from the middle pass to the
Prins 671
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page_text: second pass a pair of levers is first raised to prevent the slab from slipping
sideways, and then a pair of levers lying under the slab are turned up whilst the
pair first raised are at the same time turned down again. This action turns the
slab on edge and into the position for passing through the second pass of
the cogging rolls. By a reversed action of the same two pairs of levers the slab
after passing through the second pass is turned back again and into the position
for passing through the first or middle pass; and afterwards two other pairs of
levers are brought into action for again turning the slab on edge and into the
position for passing through the third pass of the cogging rolls which pass is on
the other side of the middle pass. With the arrangements that have been described
the slab or mass of metal may be passed any number of times and in any order
through the different passes of the cogging rolls. If the cogging mill is made with
more than three passes a corresponding number of levers are provided.
A platform is arranged in a convenient position from which a controlling
operator can watch the working of the machinery and on this platform are fitted
the various levers or handles for moving the valves of the hydraulic cylinders and
the engaging and reversing mechanism through which the feed rollers are driven.

page_text: •
I, JAMES RILEY, General Manager to The Steel Company of Scotland, Limited
of 150 Hope Street, Glasgow, in the County of Lanark, North Britain, do hereby
declare the nature of my said invention for "IMPROVEMENTS IN GEAR FOR FEEDING
AND TURNING STEEL INGOTS OR SLABS OR IRON BLOOMS IN CONNECTION WITH
"
COGGING MILLS and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement, that is
to say :-
My said Invention relates to cogging mills such as are used for reducing steel
ingots or iron blooms to slabs or masses of suitable form for subsequent treatment,
and my objects are, to diminish the manual labor required and to expedite the
operation of the cogging mill.
In carrying out my Invention a horizontal series of horizontal feed rollers is used
for moving the ingot, or bloom, or mass of metal to and from the cogging rolls,
these feed rollers being spaced so that the ingot or mass may always rest on at
least two of them (excepting when passing between the cogging rolls). At the
entering end of the gear a craille is provided for receiving an ingot and laying it
down upon the feed rollers; and this cradle is mounted on a rocking shaft and
moved by means of an hydraulic cylinder.
After going through the middle pass of the cogging rolls as often as required, the
ingot or slab is moved to a position on the feed rollers where it is turned up on
edge for the purpose of being passed through the second pass of the cogging rolls,
which pass is at one side of the middle pass. This turning on edge is accomplished
by means of levers or arms moving between the feed rollers and worked by
bydraulic cylinders acting through connecting rods and levers, or through chains
and sectors. Other levers or arms worked by means of hydraulic cylinders are
provided for subsequently turning or moving the slab or mass for passing it
through the third pass which is ordinarily on the other side of the first pass; and
if the cogging mill is made with more than three passes corresponding levers are
provided. The slab or mass of metal may be passed any number of times and in
any order through the different passes of the cogging rolls.
A platform is arranged in a convenient position from which a controlling
operator can watch the working of the machinery; and on this platform are fitted
the various levers or handles for moving the valves of the hydraulic cylinders and
the engaging and reversing mechanism through which the feed rollers are driven.
And in order that my said Invention and the manner of performing the same
may be properly understood I hereunto append two sheets of explanatory drawings
to be hereinafter referred to and representing my improved apparatus.
Figure, 1, on sheet, 1, of the accompanying drawings is a sectional side elevation
and figure, 2, is a plan showing the cradle and apparatus connected therewith for
receiving the ingot or mass of metal and laying it down on the feed rollera.
Figures, 3, and 4, are a plan and a transverse vertical section of apparatus for

page_text: turning the ingot or mass of metal and placing it in positions for going through the
several passes of the cogging rolls. Figure, 5, is a transverse vertical section of a
modification of the ingot-turning apparatus. Figure, 6, on sheet, 2, is a sectional
side elevation and figure, 7, is a plan showing the general arrangement of the
cogging mill with the feed rollers and other parts; whilst figure, 8, is an end
elevation corresponding to figures, 6, and 7; these three figures, 6, 7, and 8, being
incomplete diagrams with only the main parts shown. Figure, 9, is a plan,
figure, 10, a transverse vertical section, and figure, 11, a longitudinal vertical section
showing another modification of the ingot-turning apparatus. In these drawings
the same reference numerals are used to mark the same or like parts wherever they
are repeated.
The cradle, 15, figures, 1, 2, 6, 7, in which the ingot, 16, is placed in a vertical
position, is an iron structure of a form which will be best understood from the
drawings, and is fixed on a rocking shaft, 17, carried in bearings on a box-like bed
frame, 18. The rocking shaft, 17, has also fixed on it a pair of levers, 19, which
are connected by rods, 20, to a crosshead, 21, fixed on the outer end of the ram, 22,
of an hydraulic cylinder, 23, this cylinder being fixed to or made in one piece with,
an oppositely placed cylinder, 24, the ram, 25, of which is connected by side.
bars, 20, to the crosshead, 21; of the other ram. By means of one, 24, of the
hydraulic cylinders and the intermediate connections referred to the cradle, 15, is,
turned through a quarter of the circle so as to lay, the ingot, 16, on its side, and;
when so laid it rests on two of the feed rollers, 27. The ingot, 16, bears. on the,
first of the feed rollers, 27, through an.opening made for the purpose in the back of
the cradle, 15, and the cradle turns down sufficiently for the ingot to be free of all
parts of the back, when resting on the feed rollers, 27. After the ingot, 16, has
passed out of the cradle, 15, by the action of the feed rollers, 27, the cradle can, by
means of the other hydraulic cylinder, 23, be turned up again into its position for:
receiving the next ingot.
The feed rollers, 27, are driven by means of gearing which is not shown, but
which consists of bevil wheels on the rollers and on a longitudinal shaft in con-
nection with which quick reversing gear is provided. The ingot, 16, is laid down
on the feed rollers, 27, so as to be carried by them to the middle pass, 28, (figure, 8,)
of the cogging rolls, 29; and in entering between between the rolls is guided by
the usual vertical side plates, 30. The rolls, 29, are however made without the
ordinary projecting and meeting flanges on each side of the pass, 28, such flanges.
being unsuitable when working with apparatus which is to so great an extent
automatic; and smaller lateral guide plates, 31, are placed between the rolls and so
as to entend from the ordinary guide plates, 30, on one side of the rolls to those on
the other side. These smaller guide plates, 31, are checked into and supported by
the larger guide plates, 30; and the rolls, 29, are turned of slightly reduced
diameter just outside of the pass, 28, so as not to bear on the smaller guide
plates, 31, when they are at their closest position. The series of feed rollers, 27, is
continued beyond the cogging rolls, 29, to receive the ingot or slab when passed in-
one direction 'tlirough the rolls and to return it back again.
.
When the slab is to be turned and transferred to the second pass the feed.
rollers, 27, are worked so as to place it over two levers, 32, figures, 3; and 4; placed·
in spaces between the feed rollers, 27, and carried on centre studs or pins, 33; but
before being acted on by these levers, 32, two smaller levers, 34, carried on the
same centres, 33, are first raised into the erect position in which, one of them is
shown in figure, 4, to prevent the slab, from slipping sideways. The levers, 32, are
then raised whilst the other pair, 34, are at the same time turned down again.
This action turns the slab on edge and into the position for passing through the
second pass, 35, of the cogging rolls, 29. The levers, 32, are made with arms, 36,
which are connected together by a cross bar, 37; and this cross bar is connected by
a pair of, rods, 38, to a crosshead, 39, fixed on the piston rod, 40, of an hydraulic
cylinder, 41. In the modification shown in figures, 3, and 4, the smaller levers, 34,
are worked by means of oscillating hydraulic cylinders, 42, carried by the lever

page_text: rams, 36, their rams, 43, being jointed directly to the levers, 34. The water is led
to and from the oscillating cylinders, 42, by a combination of jointed piping partly
indicated by dotted lines in the figures, and for which flexible tubing may be
substituted if desired. With the arrangement that has been described the levers, 32,
and 34, move together when turning over the slab, without the rams, 43 having to
change their positions in their cylinders, 42, and these cylinders have only to
operate for turning the levers, 34, down out of the way and for raising them into
the erect position when required.
By a reversed action of the two pairs of levers, 32, 34, the slab after passing
through the second pass, 35, is turned back again and into the middle position;
and afterwards two other pairs of similarly arranged levers, 44, 45, are brought
into action for again turning the slab on edge, but on the other side of the middle
position and into the position for passing through the third pass, 46, of the
cogging rolls, 29. The levers, 44; are formed with arms, 47, connected by a cross
bar, 49, which is connected by rods, 50, to a crosshead, 51, on the piston rod, 52,
of an hydraulic cylinder, 53, and the smaller levers, 45, are jointed to rams, 54,
of. oscillating hydraulic cylinders, 55, carried by the lever arms, 47, the water
connections being similar to those on the other side.
Instead of the smaller levers, 34, and 45, being worked by oscillating cylinders, 42,
and 55, carried by the lever arms, 36, and 47, they may be worked by means of
stationary cylinders, 56, and 57, as shown in figure, 5. This modified arrangement,
whilst dispensing with the jointed piping of the previously described arrangement,
requires the working of these cylinders as well as those, 41, and 53, of the larger
levers, 32, 44, when turning over the slab. In the modification shown in figure, 5,
the several hydraulic cylinders, 41, 53, 56, 57, consist of pairs of single-acting
cylinders with the two rams of each pair acting through the same crosshead
whereas the hydraulic cylinders, 41, and 53, shown in figures, 3, and 4, are each a
double-acting cylinder with a piston. In figures, 6, 7, and 8, the parts so far as
shown for working the ingot-turning or slab-turning levers are the same as those
shown in figure, 5.
;
As hereinbefore stated the hydraulic cylinders may be arranged to act through
chains instead of connecting rods and levers, and a mode of arranging the parts
of such a modification is shown in figures, 9, 10, and 11, as applied to the smaller
levers, 34, used when turning the ingot or slab into or out of the position for the
second pass, 35. The two levers, 34, are formed with sectors, 58, having pulley-
like rims, and chains, 59, connected to these sectors pass round various guide
pulleys, 60, and then round pulleys, 61, carried by a crosshead, 62, fixed to the
ram of an hydraulic cylinder, 63, their other ends being fixed to lugs formed on
the sides of the cylinder. The levers, 34, with their sectors, 58, tend to turn
down by their own weight and are raised by the action of the chains, 59, when
the ram of the bydraulic cylinder, 63, is moved outwards.
In all the modifications the levers, 34, 45, which work in combination with
other levers, 32, 44, respectively, when turning the metal mass or slab, and which
when so working are at right angles or nearly so to such levers, 32, 44, are movable
relatively to them, and so that they can be turned out of the way; and this is an
important feature having practical advantages, because with two connected lever
arms formed in one piece or kept rigidly at right angles to each other it is almost
impossible to prevent the metal mass or slab from encountering one or other of the
arms when being moved along by the feed rollers.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed I have to state that
I do not restrict myself to the precise details herein described or delineated but
I declare that what I claim is
1- The combination of parts forming the cradle apparatus for receiving the
ingot or metal mass and laying it down upon the feed rollers of the cogging mill
substantially as hereinbefore described.

page_text: 2-The arranging or combining together of the parts of gear for feeding and
turning steel ingots.or metal masses in connection with cogging mills substantially
in the improved manner hereinbefore described.
'
3 The application of sets of levers for turning ingots or metal masses in
connection with cogging mills, each set consisting of two or more pairs of levers,
and the two levers (32 and 34, or 44 and 45,) of each pair being arranged so as to
be capable of combined and independent action substantially as and for the
purposes herein before described.
4 The substitution of the smaller guide plates (31) for the ordinary flanges of
the cogging rolls substantially as and for the purposes liereinbefore described, "that
is to say, for the purpose of facilitating the operation of the improved feeding and
turning gear."