Improvements in and connected with Cogging or Rolling Mills for Ingots, Slabs, or Masses of Steel or Iron.
Year: 1889

page_text: Date of Application, 6th Sept., 1889
Complete Specification Left, 5th June, 1890-Accepted, 5th July, 1890
PROVISIONAL SPECIFICATION.
Improvements in and connected with Cogging or Rolling Mills for
Ingots, Slabs, or Masses of Steel or Iron.
I, JAMES RILEY, General Manager to The Steel Company of Scotland, Limited
of 23 Royal Exchange Square, Glasgow, in the County of Lanark, North Britain,
do hereby declare the nature of this Invention to be as follows that is to say :-
My said Invention has for its object generally to improve the construction, arrange-
ment, and operation of cogging or rolling mills used in the manufacture of steel and
iron; and it comprises modifications or improvements of and additions to machinery
or apparatus for similar purposes described in my Patent Specification No. 10688
of 1884.
In my improved machinery two vertical rolls are combined with the usual hori-
zontal rolls, one of the vertical rolls being stationary in position, and the other being
movable to and from the stationary roll. The movable vertical roll is held in upper
and lower bearings which are adjustable in transverse guides in the housings, the
adjustment being effected by screw spindles driven by gearing which is arranged to
move them equally and simultaneously and also to impart equal movement inwards
and outwards to guides which, in concert with fixed guides at the side of the machine
at which the stationary vertical roll is placed, serve to guide the metal mass operated
on to and from both the vertical and horizontal rolls. The vertical rolls are arranged
to act on the metal mass on its passing from the horizontal rolls, and they are driven
at the same surface speed as the latter to avoid rubbing friction on the metal mass.
A transverse horizontal shaft drives the vertical rolls by means of bevil wheels, one
being movable on the shaft and driven by means of a groove to allow it to change
its position with the movable roll. The movable bevil wheel is kept in gear by means
of a short sleeve or tubular boss formed on it and having an external grooved thrust
journal which works in a grooved bearing block set on the upper end of the shaft or
top journal of the vertical roll. The transverse shaft with the driving bevil wheels
is arranged so that it can be easily lifted out of its bearings in the housings when
access to the vertical rolls is required for changing them or for other purposes.
A small steam engine is provided for actuating the gearing by which the movable
vertical roll and the guides on the same side are adjusted; and the same engine
supplies power whereby through suitable gearing the screws of the upper horizontal
roll are worked. The said screws are geared together by spurwheels held in a frame
which rises and descends with the screws, one of the spurwheels being driven by a
pinion which moves up and down a vertical shaft to which it is geared by a key and
groove.
The metal mass to be operated on is moved to and from the machine on rollers
which are simple antifriction rollers not driven by toothed gearing as in my former
arrangement. I may however, in some cases, have some driven rollers at the extreme
ends of the series. Hydraulic pushers are employed to move the metal mass along
on the antifriction carrying rollers. Each hydraulic pusher consists of a pushing
arm formed or fixed upon an hydraulic cylinder which is movable upon a fixed
piston and rod, and may be arranged at either side of the series of rollers, or above
them. A suitable pressure of water is constantly maintained in one end of the
cylinder, and the movements of the cylinder are obtained by admitting water under
pressure to and discharging it from the other end which is arranged to have a larger
effective area. The arm on each pusher can be turned with or on the cylinder to
raise its acting end to admit of its being placed at the outer end of a metal mass for
the purpose of pushing it towards the rolls; and to one or each of the arms there is
jointed a palm which can be turned down when required, for the purpose of pushing

page_text: a metal mass quite through one pair of rolls to the other pair. The jointed palm is
also made with a claw at its end to enable it to take hold of the inner end of a metal
mass or plate for the purpose of withdrawing it from the rolls. Hydraulic gear is by
preference used for turning each pushing arm with or on its cylinder.
At what may be called the entering end of the series of carrying rollers I arrange
a cradle of the kind described in my earlier specification hereinbefore referred to, for
receiving an ingot or metal mass in a vertical position and laying it down on the
carrying rollers this cradle being modified to allow of the pushing arm passing
through, and so that a part can be folded out of the way in certain cases.
With my improved arrangements it is not necessary to turn an ingot or metal mass
on edge, and the cost and wear and tear of appliances for that purpose are saved;
and loss of time in turning on edge is avoided. The flat surfaces or edges may be
acted on together or separately. Shocks and strains on toothed gearing for driving
carrying rollers are avoided; and generally the strains and liabilities to derangements
and breakages are much reduce.l.
Dated this Fifth law of Santambor 188a
EDMUND HUNT,
Applicant's Agent.
COMPLETE SPECIFICATION.
Improvements in and connected with Cogging or Rolling Mills for
Ingots, Slabs, or Masses of Steel or Iron.
I, JAMES RILEY, General Manager to the Steel Company of Scotland, Limited,
of 23 Royal Exchange Square, Glasgow, in the County of Lanark, North Britain,
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, that is to say :-
My said Invention has for its object generally to improve the construction, arrange-
ment, and operation of cogging or rolling mills used in the manufacture of steel and
iron; and it comprises modifications or improvements of and additions to machinery
or apparatus for similar purposes described in my Patent Specification, No. 10688
of 1884.
In my improved machinery two vertical rolls are combined with the usual hori-
zontal rolls, one of the vertical rolls being stationary in position, and the other being
movable towards and away from the stationary roll. A small steam engine is provided
for actuating gearing by which the movable vertical roll and lateral guides or
fences on the same side of the mill are adjusted. The metal mass to be operated
on is moved to and from the mill on rollers which are simple antifriction rollers not
driven by toothed gearing as in my former arrangement. I may, however, in some
cases have at the extreme ends of the series of rollers, either some driven rollers or
equivalent mechanism to carry metal masses from a crane to the rolling mill, and to
carry them from the rolling mill to shearing or other machines or apparatus.
Hydraulic pushers are employed to move the metal mass along on the antifriction
carrying rollers; and at what may be called the entering end of the series of carrying
rollers I arrange a cradle of the kind described in my earlier specification hereinbefore
to, for receiving an ingot or metal mass in a vertical position and laying it down
upon carrying rollers, this cradle being modified if necessary to allow of the hydraulic
pusher passing through, and so that a part can be folded out of the way in certain
cases.
With my improved arrangements it is not necessary to turn an ingot or metal mass
on edge, and the cost and wear and tear of appliances for that purpose are saved;
and loss of time in turning on edge is avoided. The flat surfaces and edges may
be acted on together or separately. Shocks and strains on toothed gearing for
driving carrying rollers are avoided; and generally the strains and liabilities to
derangements and breakages are much reduced.
And in order that my said Invention and the manner of performing the same may

page_text: be properly understood.I hereunto append two sheets of explanatory drawings to be
hereinafter referred to and representing a cogging mill and accessory machinery as
constructed with one modification of my improvements.
. Figures, 1, and 2, on sheet, 1. of the drawings are a plan and a side elevation;
and figure, 3, on sheet, 2, is an enlarged transverse vertical section showing the
manner of carrying, adjusting, and driving the movable vertical roll. In these
drawings the same reference letters and numerals and their combinations are used
to mark the same or like parts wherever they are repeated.
The massive housings or main frames, A, in which are held the two horizontal
rolls, B, C, as in an ordinary cogging mill, are, at one side of the horizontal rolls,
extended to carry two vertical rolls, of which one. (at the upper side in figure, 1, but
hid by gearing and other parts) is in a stationary position whilst the other, D, (at the
lower side in figure, 1, and not seen in that figure but shown separately in figure 3).
is adjustable inwards and outwards. The movable vertical roll, D, is held in upper
and lower bearings, D 1, D 2, which are adjustable in transverse guides in the
housings, A, the adjustment being effected by screw spindles, E, driven by gearing
which is arranged to move them equally and simultaneously, and also to impart
equal movement inwards and outwards to guides or fences, F, which, in concert
with fixed guides, F 1, at the side of the machine at which the stationary vertical roll
is placed, serve to guide the metal mass operated on to and froin both the vertical and
horizontal rolls. The screw spindles, E, work through internally screwed bushes, E 1,
fixed in the housing, A, and are turned by spurwheels, E 2, E3, by means of
feathers in the eyes of these wheels and which engage in longitudinal grooves in the
screw spindles. The wheels, E 2, E 3, are geared together by an intermediate spur-
wheel, E 4, and the three wheels are kept in position by an external yoke, E 5,
secured on the stud on which the intermediate wheel, E 4, turns. The lowest
spurwheel, E 2, has fixed to or formed in one piece with it a bevil wheel, E 6,
which gears with bevil wheels, E 7, on longitudinal shafts, E S. by which the
adjusting motion is transmitted to the movable fences, F. The driving motion is
imparted to the lower screw spindle or shaft, E, which is extended to a steam engine.
The steam engine is not shown in the drawings but any convenient arrangement may
be employed.
The vertical rolls are arranged to act on the metal mass on its passing from the
horizontal rolls, and they are driven at the same surface speed as the latter to avoid
rubbing friction on the metal mass. A transverse horizontal shaft, G, drives the
vertical rolls, by means of bevil wheels, G 1, G 2, one, G 2, being movable on the
shaft, and driven by means of a groove and feather to allow it to change its position
with the movable roll, D. The movable bevil wheel, G 2, is kept in gear with the
bevil wheel, G 3, on the movable vertical roll, D, by means of a short sleeve or
tubular boss forined on it and having an external groove thrust journal which works
in a grooved bearing block, G 4, made in halves bolted together, and set on the upper
end of the top journal of the vertical roll, D. The transverse shaft, G, with the
driving bevil wheels, G 1, G 2; is arranged so that it can be easily lifted out of its
bearings in the housings, A, when access to the vertical rolls is required, for changing
them, or for other purposes. The horizontal rolls. B. C, are driven in an ordinary
manner by means of gearing and intermediate "breaking" spindles which are not
shown, such gearing being provided with the necessary additional parts for driving
the transverse shaft, G, in a manner to impart to the vertical rolls the same surface
speed as that of the horizontal rolls. The screws, B 1, for raising and lowering the
upper horizontal roll, B, are geared together by spurwheels, B 2 (indicated by dotted
circles in figure, 1) held in a frame, B 3, which rises and descends with the screws,
oue of the spurwheels being driven by a pinion which moves up and down a vertical
shait, B4, to which it is geared by a key and groove, and which shaft is itself driven
by bevil wheels from a horizontal shaft, B 5, extending to the steam engine.
At each side of the mill there are arranged in suitable bearings, undriven antifriction
rollers, H, on which the mass of metal moves to and from the rolls; and above these
rollers there are latteral guides or fences, F 1, F, those F 1, (at the upper side in

page_text: figure, 1) on the same side as the stationary vertical roll being fixed, whilst those, F,
at the other side are adjustable equally and simultaneously with the other vertical
roll, D, by means of the longitudinal shafts, E 8, herein before referred to. The
shafts, E 8, by bevil wheels, F 2, drive horizontal shafts, F 3, which have on them
within frames, F 4, spurwheels, F 5, gearing with pinions on screw spindles, F 6,
(arranged like the screw spindles, E, shown in figure, 3, and hereinbefore described)
for moving the fences, F.
Hydraulic pushers, J, are used to move the metal mass along on the rollers, H, each
pusher consisting of a pushing arm, J, formed or fixed on an hydraulic cylinder, J 1,
which is movable upon a fixed piston and rod, J 2, and may be arranged at either side
of the series of rollers. H, or above them. A suitable pressure of water is constantly
maintained at one end of each cylinder, J 1, and the movements of the cylinder are
obtained by admitting water under pressure to and discharging it from the other end
which is arranged to have a larger effective area. The arm, J, of each pusher can
be turned with or on its cylinder, J 1, to raise its acting end to admit of its being
placed at the outer end of a metal mass for the purpose of pushing it towards the
rolls; and to one or each of the arms J, there is jointed a palm, J 3, which can be
turned down when required, for the purpose of pushing a metal mass quite through
one pair of rolls to the other pair. The jointed palm, J 3, is also armed with one or
two claw points at its enl to take hold of the inner end of a metal mass or plate for
the purpose of withdrawing it from the rolls. Hydraulic gear is by preference used
for turning each pushing arm, J, with or on its cylinder, J 1. An arrangement for
this purpose is shown at the right-hand sides of figures, 1, and 2, and comprises a
fixed vertical hydraulic cylinder, J 4, the ram or piston-rod of which has formed
on it a crosshead arranged to act on a lever, J 5, on the arm, J, when the
cylinder, J 1, is in its outermost position, in which it is shown in the figures.
The cradle, K, for receiving an ingot and turning it down into a horizontal position
is placed at some distance from the rollers, H, to suit the position of the crane by
which the ingots are brought to the mill, in the situation for which the machinery
shown in the drawings has been designed. The cradle, K, is fixed on a transverse
horizontal shaft, K 1, carried in suitable bearings; and this shaft has fixed on it a
toothed sector, K 2, which is in gear with a horizontal toothed rack fixed on the
piston rod of a horizontal hydraulic cylinder, K 3. The cradle is shown in its upright
position for receiving an ingot, and when an ingot has been deposited in it, it is
turned down by means of the toothed sector and rack. When the cradle, K, can be
conveniently situated near the mill it may lay the ingot directly down on the
rollers, H; and when the cradle is at a moderate distance the series of rollers, H, may
be sufficiently extended, and a few of the outermost rollers may be driven. For a
distance such as that shown in the drawings, however, I adopt the simplified expedient
of a truck, L, running on rails, L 1, and furnished with antifriction rollers, H i, upon
which the cradle, K, lays down the ingot, when the truck, L, is close to the cradle.
When the truck, L, has received an ingot it is moved towards the mill to the position
in which it is shown at the right-hand sides of figures, 1, and 2; and then the pushing
arm, J, is turned down behind the ingot and pushes it up to and enters it between the
rolls. The truck, L, is moved to and fro' by means of chains passing round guide
pulleys and acted on by hydraulic cylinders, L2, L3, the strokes of which are
increased by means of tackle pulleys in a well known way.
At the other end of the machinery there is also employed a truck, L 4 for carrying
a slab or plate from the rollers, H, of the mill to a shearing or other machine. This
truck, L 4, which, like the other, is moved by chains acted on by hydraulic
cylinders, L 5, L 6, and is furnished with antifriction rollers, H 2, is of a shallow form
and is fitted with small wheels to run on rails forming the sides of a frame, L 7,
which is supported on trunnions at its inner end. The outer end of the frame, L 7,
rests on a crosshead on the ram of an hydraulic cylinder, L 8, and it can be raised
and lowered to suit the machine to which the slab or plate is being conveyed. Thus
in the case of a shearing machine after a cut has been made with the frame, L 7, in
one position this frame can be raised to lift the slab or plate sufficiently above

page_text: the lower fixed cutter to allow of its being pushed onwards through the shearing
machine so that it can be conveniently removed from the other side.
Having now particularly described and ascertained the nature of my said Inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:-
1. The combination of parts constituting as a whole the improved cogging or
masses of steel or
rolling mill and accessories for operating on ingots, slabs, or
iron substantially as hereinbefore described and as shown in the accompanying
drawings.
2. In a cogging mill the combination with a pair of horizontal rolls, of two
vertical rolls one of which is stationary in position the other being adjustable
as and
inwards and outwards, substantially
for the purposes herein before
described.
3. The combination of parts for driving the vertical rolls, an essential part thereof
being the grooved box and the grooved boss of the bevil wheel which drives the
movable roll, substantially as hereinbefore described.
4. The combination of antifriction carrying rollers all or some of which are
undriven, with hydraulic pushers for moving the mass of metal to and from the mill
rolls, substantially as hereinbefore described.
5. The arrangement of lateral guides or fences to guide the mass of metal in both
directions towards the rolls, the fences being stationary on the side at which the
vertical roll is stationary, whilst the fences at the other side are adjustable in concert
with the movable vertical roll, substantially in the manner and for the purposes
herein before described.
6. In combination with the laying-down cradle and other mill accessories
the truck and its actuating apparatus for conveying the mass of metal from
the cradle to the stationary carrying rollers, substantially as hereinbefore
described.
7. In combination with the other parts of the mill, the truck and its vertically
adjustable carrying frame for moving a plate or slab from the mill, onwards to
shearing or other apparatus, substantially as hereinbefore described.
Dad this Fourth day of June 1890.
EDMUND HUNT,
Applicant's Agent.