IMPROVEMENTS IN ROLLING-MILLS
Year: 1884

page_text: COMPLETE SPECIFICATION.
I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co, Patent Agents,
Southampton Buildings, in the County of Middlesex, do hereby declare the nature
of my Invention for "IMPROVEMENTS IN ROLLING-MILLS" 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 rolling-mills and has for its object to provide a
roll-train which may be inverted, so that the bars being rolled may pass in both
directions in the same plane or at the same elevation, and thereby avoid the uso
of a "three high" roll-train; and the said Invention consists in making the rolls
reversible as to position, and in the several combinations of parts, hereinafter
described.
In the accompanying Drawings.
Figure 1 is a front elevation of the improved rolling-mill.
Figure 2 is a front elevation thereof partly in section.
Figure 3 is an end elevation of the same.
Figure 4 is a similar elevation, with the gear-wheels and housing omitted.
Figure 5 is an elevation of the opposite end to that shown in Figure 3, and
Figure 6 is an end elevation similar to that shown in Figure 3, but with the
gearing removed.
A indicates the framing or housings for the ends of the roll-train; B the means
for attaching the framing or housings to the foundations; C the top plates of
the foundation; D the case or housing for a portion of the driving gear; E the
rotating disc or cylinder having interior cogs or teeth; El the partitions or spokes
of the cylinder E; F the main or driving shaft; G the driving pinion; H the
interior cogs in the front end of the cylinder E; I the interior cogs or teeth in
the inner end of the cylinder E; J the driving pinion for the roll R; K, L gear-
wheels for driving the roll S, and for moving the two rolls in unison; M, MT the
gear-wheels for revolving the roll-carriage to change the relative positions of the
rolls; N the driving pinions gearing with the wheels M, M; O the shaft of
the pinions N; O¹ O¹ bearings for the shaft O; P, P discs or end plates by which
the rolls are supported and held in position; QQ stops or projections; R the flange
roll; R¹ its shaft: S the groove roll, and S¹ its shaft; T, T cross-bars or rods for
.C
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L

page_text: connecting the plates or discs P and forming the roll-carriage; a the stop block;
the connecting link; e, f, L a lever by which the stop a is advanced; d a groove
in the casing or housing A; e a shoulder or enlargement in the end plates fitting
into the groove d.
The rolls R, S are made in the usual manner, so far as the flanges and grooves are i
concerned, and, in the form shown, they are adapted for the rolling of railway-rails,
but they may, if desired, be modified in form to adapt them for other purposes.
These rolls are supported in suitable bearings in the end plates P as shown in
Figures 3 and 4. The end plates Páre cast, or otherwise made, in the form shown
in Figure 2, that is to say, with the inner portions larger than the outer portions, 1
so as to form the shoulder e, and they are provided with the gear-wheels M, which
are usually cast as a part of the said end plates but may be made separately
therefrom if desired.
These end plates are held together and in position by the cross-bars T. They
are also provided with projections Q, which projections, with the block a, form
stops by which the rolls are brought accurately to the desired position.
The gear-wheels M M gear with the driving pinions N which pinions aro
supported on the shaft O. This shaft is supported in suitable bearings O¹. The
wheels N are connected with the shaft O and serve to move the end plates Pin
unison, and the shaft O may be extended as indicated in Figure 1 so as to drive
the pinions N by separate machinery, or by a separate part of the machine. But
for this last mentioned purpose they are not essential, as the movement of the
main driving pinion G will, in practice, rotate the roll-tráin when the stops are
unlocked.
The cylinder-E-revolves-within-the-casing D, and is held in position-by-an-
exterior flange fitting into a corresponding groove in the casing as shown in
Figure 2, or by other suitable means. This cylinder is provided at its outer end
with cogs or teeth H which are acted upon by the pinion G so as to cause the
said-cylinder to revolve. In revolving, the cogs or teeth 1 on the inner end of the
cylinder, which gear with the pinion J, cause this pinion to revolve and, being
fast on the shaft or journal of the roll R, cause the roll with its pinion K at the
opposite end to revolvo.
The gear-wheels K and L being of the same size and in gear, cause the roll S to
revolve with the same speed as, or in unison with, the roll R and in opposite
directions, so as to give them their proper rolling action in use.
While the rolls are in action they are held firmly in position by the stops a, Q, so
that their action upon the metal passing through is the same as that of rolls held
permanently in position.
The stop a is a strong block of iron passing through the lower frame-work, as
shown in Figure 6 and is connected, by a link or otherwise with the lever c, hy
which it is operated, and in practice, the machine will be so arranged that when
the lever c retards the stop a, the end plates will revolve half way around or so
as to reverse the position of the rolls R, S, as shown, the roll S on the half
rotation becoming the upper instead of the lower one, and this arrangement will
be made so that if they are rotated by the shaft O it will commence to revolve,
or, as above stated, the power from the shaft F on the cylinder E will of itsolf
cause the roll-carriage to rotate until it is again locked.
The pinions G and J are so located in reference to the cylinder E and the cogs
or teetli H, I, that unless stopped, the roll-carriage will commence and continue to
rotate. The reversal of the rolls R S as to their upper and lower positions, does
not change their rotation relatively to the gear-wheels K, L, but it reverses the
movement in relation to the bar of iron passing between them, so that when, in
operation, the bloom or bar has once passed through, the releasing of the stop a
will cause the rolls to rotate in the bearing of the end plates P in the frame or
housing A, and reverse their position, so that the bar can be run through between
them, in the same plane or at the same elevation, and thus, effect what has
heretofore required a train of three rolls, or a stopping and reversing of the rotation

page_text: of the rolls themselves, and by this arrangement the bars to be rolled can be
handled with less help, with greater speed, and bars can be rolled to a greater
length than in the rolls heretofore used for bars which require passing through
between the rolls more than once. The stops a may be retracted by a lever or
treadle attached to the shaft g and the rotation of the carriage will cause the
stops Q to strike against the bent portion fof the lever c and force the stops a back
to the stopping or backing position.
The method of supporting and operating the rolls shown, is that which I deem
best, but it is obvious that the parts may be somewhat varied, without departing
from the principle or general construction of my improved roll-train.
It will be obvious that a brake may be used to control the rotation of the
roll-carriage, in case its movement should be quick or too strong, and that while,
as shown, the roll-carriage continues to rotate in the same direction, when free to
revolvo, it may be rotated in reverse directions by using racks applied to, or in
place of, the pinions or wheels N.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I declare that what
I claim is:-
First. The combination of a rotary carriage, a series of rolls supported thereby
and adapted to revolve in opposite directions, and means for rotating the said
carriage to reverse the position of the said rolls, whereby bars of iron may be rolled
back and forth in the saine plane and between the same rolls without reversing the
movement of the rolls, substantially as described.
Second. The combination of the frame A, the rotary end plates P, the rolls R, S,
means for revolving the rolls, and means for rotating the carriage to reverse the
position of the two rolls, substantially as described.
Third. The rollers R, S, rotary carriage and frame A with the gear-wheels M, M¹
and N, substantially as set forth.
Fourth. The rotary carriage having the stops Q and supporting the roll-train in
combination with the stop a for holding the rolls in position, substantially as
specified.
Fifth. The combination of the rotary carriage and rolls R, S, with the cylinder E,
having the teeth or cogs I, pinion J and gear-wheels K, L, substantially as
described.
Sixth. The combination of the cylinder E, having the teeth or cogs H, I, with
the pinions G, J, rollers R, S, rotary carriage, and gear-wheels K, L, substantially
as specified.
Seventh. The combination of the driving pinion G, cylinder E having the teeth
or cogs H, I, the rotary carriage having the stops Q, the rollers R, S, with the
gear-wheels J, K, L, M, M, N, and the stop a, substantially as described.
Dated this 26th day of August 1884.