Improvements in or connected with Rolling Mills.
Year: 1895

page_text: Date of Application, 2nd Oct., 1895
Complete Specification Left, 2nd July, 1896-Accepted, 12th Sept., 1896
PROVISIONAL SPECIFICATION.
Improvements in or connected with Rolling Mills.
We, ISAAC HAYWARD, of 123 Lovely Lane, Warrington, Lancashire, Wire
Roller, and CHARLES THOMAS POWELL, of 12 Cherry Street, in the City of
Birmingham, Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to improvements in or connected with rolling mills, and
more particularly to that class of rolling mill wherein the steel, or iron ingot, or
other heavy body is rolled down into billets, or in some cases into the finished
shape.
While this our invention may as before intimated, be used for various kinds of
large bodies, it is especially intended for reducing steel ingots which have been
prepared in or from the molten state-without reheating into billets or further into
the required finished ordinary sections or into wire.
We provide a pair (or pairs) of rolls two high through which the metal passes,
and which then passes direct into a second pair of rolls in line therewith. This
second pair of rolls is furnished with a further roll which is above them, thus
making this a set of three high, so that the piece after passing through the second
pair, may be raised and repassed through the upper and middle rolls, and over and
to the front of the first named pair, when the process may be repeated as often as
required.
To facilitate these operations we further provide that the stands or platforms
before the rolls shall be raised at will from one level to another to accommodate the
delivery of the piece from and its entrance into the rolls at the different heights.
To do this we may employ various means, but one way in which we may do it
is as follows:-The platform is made of a suitable length and width. At its outer
end it may be carried or controlled upon pivots or the like. Such end is preferably
somewhat higher than the entrance to the upper pair of rolls, whilst the end nearest
the rolls is capable of a rising and falling motion to suit the delivery from the
lower rolls and the entrance to the upper rolls. This rising and falling motion
may be effected by hydraulic means or preferably it may be done by screws and
toothed gearing operated by frictional gearing. If preferred however, the whole
platform may equally rise and fall to the extent stated. Upon this platform
suitable rollers upon which the piece may be conveyed from one point to another
in its delivery or entrance to the rolls, or from one hole to another in the said
rolls. These rollers may be merely capable of a motion due to the piece passing
over them, or they may be actuated by gearing operated from a suitable motor shaft
or shafts.
This arrangement of mechanism may be used in and of itself, or it may be used
in combination with an entire mill as before indicated.
Dated thig let dow of Databo- 1905
CHARLES T. POWELL,
Co-applicant, and Agent to the first named Applicant.

page_text: .
Improvements in or connected with Rolling Mills.
We, ISAAC HAYWARD, of 123 Lovely Lane, Warrington, Lancashire, Wire
Roller, and CHARLES THOMAS POWELL, of 12 Cherry Street, in the City of
Birmingham, Engineer, do hereby declare the nature of this invention and in what
manner the same is to he performed, to be particularly described and ascertained
in and by the following statement :-
This invention relates to improvements in or connected with rolling mills and
more particularly to that class of rolling mill wherein the steel, or iron ingot, or
other heavy body is rolled down into billets, or in some cases into the finished
shape.
While this our invention may as before intimated, be used for various kinds of
large bodies, it is especially intended for reducing steel ingots which have been
prepared in or from the molten state-without reheating into billets or further into
the required finished ordinary sections or into wire.
In order to more clearly explain this our invention we have appended hereunto
illustrative sheets of drawings upon which are figures and numbers of reference,
similar numbers referring throughout the several views to the same thing or
part.
Fig. 1 is a front elevation showing the arrangement.of the three high rolls.
Fig. 2 is a front elevation showing the arrangement of the two high rolls.
Fig. 3 is an end elevation showing the positions of the two high and the three
high rolls.
Fig. 4 is an end view showing the arrangement of the rolls in conjunction with
the raising and falling platform mechanism.
It will be seen that in many details the arrangement may be modified.without
departure from the nature of the invention.
We provide a pair of rolls 9, 10, two high through which the metal passes in the
direction of the arrow 11 and which then passes direct into a second pair of rolls 12
and 13 in line therewith. This second pair of rolls is furnished with a further
roll 14 which is above them, thus making this a set of three high, so that the piece
after passing through the second pair, may be raised and repassed through the
middle roll 13 and upper roll 14, and thence again to the front of the first pair 9,
and 10, when the process may be repeated.as often as required.
Preferably we mount these rolls in a one casting housing 15, but if desired they
may be placed in separate housings at a greater distance apart. The grooves 16:
to.27 are of course determinedias.to shape and number according to the size and
reduction desired upon the ingot &c. The rolls are driven in the ordinary manner
by the pinions 28 and 29 and by suitable gearing 30 and 31 from the engine &c.
It will be readily seen that by reason of the great weight of the ingot &c. it is
difficult to raise or lower them from one set of grooves to another, or to turn them
over which is necessary in the course of their being rolled..
To effect this we employ the mechanism illustrated in Fig. 4, which admits of
various modifications. Referring to Fig. 4, this shows the arrangement of platform
in both positions up and down; the full lines representing them down and the
dotted lines showing their position when up. Dealing first with the platform 32
which is at the front of the rolls it will be seen that the said platform is carried
from a pivot 33, to which is connected the link 34, which latter is again connected
to the fixed point:35. 36 is a hydraulic ram whose front end is connected to the
underside of the platform at 37 by which the said platform may be raised at will.
38 is a link whose one end 39 is fixed whilst its other end 40 is connected to the
movable platform. 41 is a link fixed at 42 by which the rear end of the platform
is controlled. It will therefore be seen that when the ram 36 is forced outwards,

page_text: the table 32 is raised, and in so doing the link point 40 follows the direction of the
line 43, while the point 33 follows the line 44 and thus the table is raised to receive
the inget 53 upon its return from the top rolls 13 and 14.
The operation of the other table 45 is somewhat similar, it being pivoted at 46.
to link 47 which latter is fixed at 48. Its front end is again connected to the
link 49, which latter is again connected to the fixed point at 50. The hydraulic
ram 51 is connected to the underside of the table at 52; hence when the ram 51 is
forced outwards the table 45 is raised from the lower to the upper pair of rolls, the
link joint 54 taking the direction of the dotted line 55. The receiving platform 45.
is shown inclined and the lower part considerably below the top of the roll 12 in
order to ensure if possible a definite position for the ingot after leaving the rolls,
the speed with which it is ejected not being as a rule sufficient to send it up the
incline. When the ingot is received upon the platform 32, and is lowered into its
position for re-entrance into rolls 9 and 10 it is desirable that it should be quite
clear of the collare of the rolls. This is done by the curved plate 56.
In some
cases this curved plate is not used, or if used will be moved out of the way to allow
of the ingot to pass into the lower rolls. If preferred however, the whole platform
may equally rise and fall to the extent stated. Upon these platforms may bo
ordinary suitable rollers upon which the ingot &c. may be conveyed from one
point to another in its delivery or entrance to the rolls, or fron one hole to
another in the said rolls. These rollers may be merely capable of a motion due to
the piece passing over them or they may be actuated by gearing operated from a
suitable motor shaft or shafts.
This arrangement of mechanism may be used in and of itself, or it may be used
in combination with an entire mill for further reducing the metal down into various
sections. The finishing mill such as seen for instance at 57 may be placed along-
side so that the piece from the last hole delivery in the cogging train may be
turned into the said mill, or the said finishing mill may be arranged in continuous
line with the said last hole so as to pass therewith direct.
Having now particularly described and ascertained the nature of this our said
invention, and in what manner the same is to be performed, we declare that what
we claim is
-
.
1. In rolling mills such as those known as cogging mills the combination of a
pair of two high rolls such as 9 and 10 with a set of three high such as 12, 13.
and 14 arranged and operating substantially as set forth and shown.
2. In rolling mills such as those known as ingot, or cogging mills the com-
bination and arrangement of mechanism for raising and lowering the table or
platform ou to which or from which the piece is delivered into or from the rolls
substantially as described and shown.
3. The general combination and arrangement of rolls with the platform
mechanism all substantially as set forth and shown and for the purposes specified.
Dated this 1st day of July 1896.
CHARLES T. POWELL,
Co-applicant, and Agent to the first named Applicant.