Mill for Rolling Metal Rods, Bands, Wire, and the like.
Year: 1895

page_text: Date of Application, 19th Jan., 1895
Complete Specification Left, 14th Sept., 1895--Accepted, 2nd Nov., 1895
PROVISIONAL SPECIFICATION.
Rolling Mill for Rolling Metal Rods, Bands, Wire, and the like.
I, PETER KRIEGER, of 3 Vollrinkstrasse, Haspe, Westphalia, Engineer, do
hereby declare the nature of this invention to be as follows:-
This invention relates to an improved construction of rolling mill for rolling metal
rods, bands, wire and the like, wherein by the addition of a single supplemental set
of rolls, and by a new arrangement and use of the several pairs of rolls, the rolling
mill can be made to produce double the amount of work, without requiring two or
more bars to be operated upon simultaneously in the same set of finishing rolls.
.
For this purpose the rolls, as ordinarily employed, are divided into two groups in
such manner that the two first middle rolls are arranged by the side of the roughing
rolls, and to them are added the new rolls having pairs of grooves that are to be
used alternately while the opposite rolls for finishing are divided into two groups,
each of which groups is supplied from the new added rolls, by means of the
alternately used similar grooves. By this arrangement the working capacity of the
roughing rolls is fully utilised and all entanglement of the rods &c. passing.
consecutively through the rolls, as also any meeting thereof at the grooves of the
finishing rolls is avoided, while a considerable cheapening of the manufacture with
doubling of the output is attained.
Thus, for example, in a mill for rolling wire, the rod is first passed through the
roughing rolls two or more times, thence it is led to the one set of middle rolls, then
to a groove in the new set of middle rolls and then to a groove in a third set of
middle rolls; from this the wire is passed back to one of the before-mentioned
similar pair of grooves of the new set, and from this it is led across to one of a
similar pair of grooves in the middle of the double group of finishing rolls opposite.
From this groove the wire is then led through say the left hand group of finishing
rolls and is finally wound up on a reel. While the above operation is proceeding,
and as soon as the wire has left the roughing rolls, a second rod is introduced into
the latter, is led thence through the first middle roll, the new middle roll and the
third middle roll, and from the latter it is then led through the second of the similar
pair of grooves of the new rolls, then across to the second of the similar grooves of
the finishing rolls and thence through the right hand group of finishing rolls, so
that both sets of finishing rolls are operating simultaneously upon a length
of wire.
As soon as the second rod has passed through the roughing rolls, a third one is
introduced, and this proceeds in the same direction as the first described one, and
so on, so that the roughing rolls are continuously at work, delivering to the middle
rolls which supply alternately to the left hand and the right hand group of.
finishing rolls.
Dated this 19th day of January 1805
ABEL & IMRAY,
Agents for Applicant.

page_text: Rolling Mill for Rolling Metal Rods, Bands, Wire, and the like.
I, PETER KRIEGER, of 3 Vollrinkstrasse, Haspe, Westphalia, Engineer, 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 relates to an improved construction of rolling mill for rolling metal
rods, bands, wire and the like, wherein by the addition of a single supplemental set
of rolls, and by a new arrangement and use of the several pairs of rolls, the rolling
mill can be made to produce double the amount of work, without requiring two or
more bars to be operated upon simultaneously in the same set of finishing rolls.
For this purpose the rolls, as ordinarily employed, are divided into two groups in
such manner that the two first middle rolls are arranged by the side of the roughing
rolls, and to them are added the new rolls having pairs of grooves that are to be
used alternately while the opposite rolls for finishing are divided into two groups,
each of which groups is supplied from the new added rolls, by means of the
alternately used similar grooves. By this arrangement the working capacity of
the roughing rolls is fully utilised and all entanglement of the rods &c. passing
consecutively through the rolls, as also any meeting thereof at the grooves of the
finishing rolls is avoided, while a considerable cheapening of the manufacture with
doubling of the output is attained.
On the accompanying drawing is shewn by way of example a rolling mill
constructed according to my invention, as applied to the rolling of wire.
The rolling mill consists of the roughing rolls a, the so-called intermediate
rolls b, c, d, and the two opposite finishing roll groups e, f, g, h, and e f¹ g¹ h¹. The
roughing and finishing rolls are driven in the usual way.
The intermediate rolls are driven from the shaft w through the shaft w¹ by means
of a transmission shaft T.
The bars to be rolled, which are usually of a square section, are brought down to
the required smaller section by passing five times through the roughing rolls, and
they are then made to pass automatically by means of a curved guide consecutively
through the first intermediate rolls b, the second intermediate rolls c, the third
intermediate rolls d and back through the second intermediate rolls c. The latter
are thus made to operate twice and are for that purpose made rather longer than
the others.
The intermediate rolls c have two sets of precisely similar grooves x and x¹
which are used alternately, the workman being made to pass the rod coming
from the intermediate roll a first through the grooves 2, and the next through x,
then again through and then through a¹ and so on.
Corresponding to these two sets of grooves there are provided two straight open
channels through which the angular rod passes from the intermediate rolls c to
one of the sets of grooves y y' of the finishing rolls e, the rod coming from the
grooves a being passed through the channel to the groovey, and the rod coming
from the grooves ¹ being passed through the channel to the grooves y¹. In the
first named case, the rod then passes through the left hand group of the finishing
rolls gh, in the latter case, through the right hand group of the finishing
rolls gh, in order to be led off at i or as finished wire to the winding
reels k k¹.
1
The grooves x x and y y' are provided with suitable guides for leading the rods
into the channels = '.
The operation of rolling is carried out as follows:--
A bar having left the roughing rolls, a second bar is at once passed into these.

page_text: the workman into one of the grooves x and x³, say into x; during this time the
second bar has passed through the roll d and is passed by the workman through
grooves . The first rod has in the meantime passed through the rolls ef gh, and
the second one follows through e ƒ¹ g¹ h¹.
While the first rod is passing through the left hand finishing rolls and the second
one through the intermediate rolls, a third bar is passed through the roughing rolls.
While this is passing through the intermediate rolls, the second rod passes through
the right hand finishing rolls, and simultaneously a fourth bar is passed through the
roughing rolls. The rolls c consequently feed by means of its grooves a and ¹ both
the sets of finishing rolls, one immediately after the other, and thus enable the
roughing rolls to work without material interruption. Consequently while the
roughing rolls and the intermediate rolls are carrying out one rolling operation,
the finishing rolls (consisting of two separate rolling mills working independently)
are engaged in two rolling operations. This is rendered possible by the rolls c
which by means of the pairs of grooves xxl enable two rods to be sent one directly
after the other to the finishing rolls, each of which rods finds a separate finishing
rolling mill ready to receive it. It will be evident that the roughing rolls must
work without material interruption for feeding the finishing rolls, and are consequently
utilised to double the extent of ordinary rolls.
For serving this rolling mill plant there are required six workmen instead of five
as usual.
The positions of these are indicated at X. The six workmen however produce
double as much wire as the five workmen serving the ordinary arrangement of rolls,
whereby a considerable lessening of the working expenses is effected.
According to circumstances, local conditions, &c., various modifications can be
made in the arrangement of the rolls; for instance the rolls c, instead of being
between b and d, can also be arranged behind d. The arrangement shewn bas
however the advantage that the intermediate rolls c are situated opposite the middle
of the two groups of the finishing rolls, so that the arrangement occupies as little
room as possible. Also, the grooves x and y y' instead of being side by side
respectively on the rolls c and e, can be on separate rolls, also a greater number of
finishing rolls can be employed.
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. In rolling mills for rolling metal rods, bands, wire, and the like, the method of
operating for doubling the output of the rolling mill consisting in causing the
material coming from an intermediate pair of rolls to pass alternately through
grooves arranged in pairs of contiguous intermediate rolls, and to be led from these
grooves, in rapid succession to groups of finishing rolls working independently of
each other, in each of which the rolling of a bar, rod, band or wire is separately
completed, substantially as described.
2. A rolling mill for carrying out the method of operating referred to in the
first claim wherein there are provided in one or in two intermediate rolls c two
similar grooves xx for the reception of the material coming from another
intermediate roll d while opposite the said roll or rolls are arranged two separately
working groups of finishing rolls, e f g h, and e f g h¹, in each of which the rolling
of a bar, rod, band or wire coming from the said intermediate rolls is separately
completed, substantially as described.
Dated this 14th day of September 1895
ABEL & IMRAY,
Agents for the Applicant.