Improvements connected with Rolls for Rolling Mills.
Year: 1894

page_text: Date of Application, 28th June, 1894-Accepted, 28th July, 1894
COMPLETE SPECIFICATION.
Improvements connected with Rolls for Rolling Mills.
I, OTTO KLATTE, Manager of the Firm of Walzwerk Germania, Neuwied on
the Rhine, Germany, 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 has reference to rolls which are used for rolling chain-bars or
bars with impressions on different sides, that is, bars in which the impressions on
one side are to have a certain position dependent upon, and in relation to the
other. In my Patent No. 15403 of 12th August 1893 rolls are described with
reference to Figures 37, 38, 39, 40, aud 28 which answer the purpose mentioned,
and in connection with these the invention is to be described.
These rolls consist of a centre piece which is placed on the axis of the roll and
revolves with it, and of two discs which hold this centre piece between them,
these discs and centre piece being thereby firmly attached to the axis. The centre
piece can be constructed of a single disc or of several discs placed together against
one another, or of a central disc surrounded by a tyre. It has a row of holes
arranged in a circle which go right through it, are oval in shape and afford a
passage to bolts which serve to firmly hold the centre piece between the discs.
If these bolts are somewhat loosened, the centre piece can, in consequence of the
oval shape of the bolt holes, be turned forward or backward to a certain extent
round the axis of the roll.
It
In order to bring the profiles (projections and hollows) existing on the
circumference of the roll in exact conformity as to position with those on another
roll, the contrivance which is the object of this invention comes into use.
consists of a pin or bar which goes through the roll selected as an illustration of
the invention and has at its middle portion an eccentric and its ends formed as
centre turning pegs which eccentric portion lies in the centre piece and the ends
in discs. A lever is attached to the outside of one end by means of which the
eccentric pin can be firmly fixed. If the eccentric pin be turned round, the roll
will be partly turned round on its axis.
This contrivance is represented on the annexed drawings in connection with a
roll the centre piece of which is constructed of a disc surrounded by a tyre.
Figure 1 is a vertical section.
Figure 2 a front view.
Figure 3 a section on a larger scale, through that part of the roll in which the
eccentric pin is placed.
The middle of the roll consists here of a centre disc 1 with a tyre 2 attached to
it, and one stiffening disc 3 at each side which discs are joined to the tyre by
bolts 4. This part is fitted on the axis 5, and by means of the bolts 7 is held
firmly between the discs 6, 6, which are made like cog-wheels.
Right through the central piece 1 and the stiffening discs 3 there is formed a
square hole 8, Figure 3, and in this a square block 9 is inserted, which in a radial
direction is somewhat shorter than the depth of the hole 8 measured in the same
direction but the ohter way fits close to the walls of the hole. The block can
therefore be moved in the hole only in a radial or outward direction. A cylindrical
boring is made through the middle of the block 9 and in this there fits closely
joined but revolvable, a pin or bar which has at its centre portion 10 an enlarged
part excentric to its ends 11. The ends 11 rest in holes in the discs 6, 6. One end
to the left in Figure 1 terminates into a square 12. On this square an index lever
is fixed. In front of this index on the square 12 is placed a key 14. On moving

page_text: this key in either direction the eccentric 10 is correspondingly turned and through
this by means of the block 9 the centre part 1, 2, 3, 4, of the roll between the
dises 6, 6, moves round the axis 5 in a certain angle. Before moving the key 14,
the bolts 7 must be loosened.
When the part 1, 2, 3, 4, of the roll is properly adjusted with respect to the
other rolls, the eccentric pin must be fixed in its place by the aid of the index 13
as follows. The index has in its free end four smooth holes 15, Figure 2, lying
under one another, or a slit occupying the space of the four holes, and this end
works over a segment plate 16, which is attached to one of the discs 6, and has
four rows of holes. The holes 17, which are furnished with threads for screws are
arranged in concentric arcs of a circle, the centre of which is the centre of end 11.
The distances of these arcs from one another are equal to the distances of the
holes 15 of the index 13.
A displacement of 1 mm. on the outer periphery of a roll corresponds to one
turn of the index at the distance of two holes on the outermost arc.
The holes on
the three other arcs admit of intermediate displacements of millimetres.
This contrivance can however be arranged for smaller displacements than.
millimetre by arranging the holes of the segment plate proportionately closer or
by making use of a curved slit, instead of rows of holes in the segment plate.
In order to fasten the eccentric with the aid of the index a screw must be
passed into that hole of the index which after setting up the roll stands exactly
over a hole of the segment plate 16, or else through the slit of the index, and
screwing it firmly into the hole of the segment plate. If the segment plate instead
of rows of holes has a curved slit, a suitably shaped binding screw must be used
for attaching the index to the segment plate. The centre piece of the roll is then
made fast in this position to the discs or wheels 6, 6, enclosing it by tightening the
bolts 7 thus bringing the two discs 6, 6, and centre piece 1 in close contact.
The adjusting apparatus above described enables the rolls to be accurately set
up, without it being necessary to finish building them, so that such variations
which are a consequence of the rolling operations can always be adjusted.
These variations which are called forth by the rolling itself in the opposite
position of the circumference of the rolls are caused principally by the strain on
the rolls, which takes place at every revolution, and which cannot be entirely
avoided, in consequence of which the catch of the cog-wheels forming the motive
power is different when working with an empty machine, that is, the teeth which
work together are pushed further apart, although only in a trifling degree, which
causes the wheel when in motion to remain somewhat behind, which is not the
case when working with an empty machine.
The above contrivance illustrated in a special kind of rolls of a certain
construction can generally be used where rolls revolving on an axis are to be
turned, displaced, and set up on this axis, in a certain position. It is not absolutely
necessary for the eccentric to have two ends, one is sufficient, in which case it is
placed in a sleeve fastened to the axis, either close to the roll, or at a little
distance from it. This arrangement is represented in Figures 4 and 5. The
parts corresponding to those shown in Figures 1, 2 and 3 are designated by the
same letters as in Figures 1, 2 and 3.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. An appliance for adjusting rolls of rolling mills characterised by having in
the centre picce or roll parallel to the axis, an eccentric, one or both ends of which
are placed in one or two discs, wheels, or sleeves lying next the roll in such a
manner that by turning the eccentric, the roll is turned on its axis, as and for the
purpose set forth, and substantially by the means shown in the annexed drawings.
2. In an appliance for adjusting rolls in rolling machines of the kind described
in Claim 1, the employment of an index-lever with holes or a slit, the lever moving

page_text: over a segment plate also with holes or a slit, and connected with this by a bolt or
a screw, for the purpose of keeping the adjusting appliance in its proper position,
substantially as described and shown.
Dated this 10th din of June 1801
R. CORE GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said Otto Klatte.