IMPROVEMENTS IN ROLLING MILLS
Year: 1882

page_text: LETTERS PATENT to Friedrich Asthöwer and Toussaint Bicheroux, doing
business under the firm of F Asthower and Co, of Annen Westphalia Germany
for an Invention of "IMPROVEMENTS IN ROLLING MILLS
"
PROVISIONAL SPECIFICATION left by the said Friedrich Asthöwer and
Toussaint Bicheroux at the Office of the Commissioners of Patents on the
15th November 1882.
FRIEDRICH ASTHOWER and TOUSSAINT BICHEROUX doing business under the
firm of F. Asthöwer & C° of Annen Westphalia, Germany
"IMPROVEMENTS IN
ROLLING MILLS"
In those roller mills whose separate pairs of rolls are arranged one at the rear
of the other instead of one by the side of the other, so that the rod which is being
operated upon passes directly from the die-grooves of the one pair of rollers to the
narrower groove of the next pair, it is necessary to arrange devices between the
separate pairs of rollers which give that direction to the rod which otherwise it
receives from the hand. For this purpose the use of tubular bodies is well known
their internal cross section is of a shape corresponding to that of the rod they
admit whilst on the line of their length they are wound helically in such a manner
that the rod when entering the next pair of rolls has received from them, the
correct position for the die grooves it is to pass through. This arrangement is
subject to the inconvenience that the rod as soon as a small burr or beard is raised
thereon by the die-groove through which it has passed no longer has sufficient side
play in the said arrangement, so that the same is choked and this may be followed
by serious consequences both for the mill and for the workmen attending thereto.
Our invention has for its object to obviate these difficulties and the consequent
more general use of the aforesaid class of rolling mill, which class possess much
greater capabilities of production and at the same time require fewer hands for
their attendance then those arrangements of rolling mills in which the roll-frames
stand side by side.
Our novel rod guiding device consists of pairs of guide rollers which are
adjustably mounted on a plate behind one pair of rolls; they are adjustably fixed
D

page_text: by means of screw-bolts which at the same time form the spindles on which they
turn; together with these rollers we employ a funnel whose axis is co-incident
with that of the die-grooves which precede it the funnel being fixed in front of
the next pair of rolls.
For oval die-grooves we employ rollers with suitably curved peripheral surfaces;
for flat and square shapes however conical rollers.
The characteristic feature of this arrangement consists in that two rollers of the
same shape are placed side by side, so that one has its base at the bottom the other
its point or apex, so that their taper and their distance from the pair of rolls will
determine the extent of twist which is given to the rod when it passes through
the rollers
If the rod passes from an oval die groove to a square or round one in the next
pair of rolls it must be turned in a rectangle; in rolling flat bars as for instanco
in making band iron the turn is 180° The shape of the rollers and their distance
from the preceeding pair of rolls as well as from the succeeding one, will therefore
have to be determined according to these requirements.
The funnel catches the rod coming from the pair of rolls and corrects any
deviation of the rod from the position requisite for its introduction into the next
pair of rolls, its end is of that cross-section which the last pair of rolls has
imparted to the rod and it conducts this latter to the next die-groove in a proper
position The width of the funnel in front will be chosen according to the
deviations from a straight line which are liable to occur in the path of the rod.
By this arrangement of apparatus, all choking is obviated and the tedious and
expensive inserting and twisting of the rods by hand can by its use successfully
be transformed into an automatic process

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Friedrich Asthöwer and Toussaint Bicheroux in the Great Seal
Patent Office on the 12th May 1883.
FRIEDRICH ASTHÖWER and TOUSSAINT BICHEROUX doing business under the
firm of F Asthöwer and Co, of Annen Westphalia, Germany. "IMPROVEMENTS IN
ROLLING MILLS
"
In those roller mills whose separate pairs of rollers are arranged one behind the
other instead of one by the side of the other, so that the rod which is being operated
upon passes directly from the die-groove of the one pair of rollers to the narrower
groove of the next pair, it is necessary to arrange devices between the separate
pairs of rollers which give that direction to the rod which otherwise it receives
from the hand. For this purpose the use of tubular bodies is well known their
internal cross section is of a shape corresponding to that of the rod they admit
whilst on the line of their length they are wound helically in such a manner that
the rod when entering the next pair of rolls has received from them the correct
position for the die grooves it is to pass through. This arrangement is subject to
the inconvenience that the rod as soon as a small burr or beard is raised thereon
by the die groove through which it has passed no longer has sufficient side play in
the said arrangement, so that the same is choked and this may be followed by
serious consequences both for the mill and for the workmen attending thereto,
Our invention has for its object to obviate these difficulties and cause the
consequent more general use of the aforesaid class of rolling mill, which class possess
much greater capabilities of production and at the same time require fewer hands
for their attendance than those arrangements of rolling mills in which the roll-
frames stand side by side
Our novel rod guiding device shown in the accompanying drawings consists of
pairs of rollers a a¹ bb' which are adjustably mounted on a plate c behind the
pair of rolls; they are adjustably fixed by means of the screwbolts d which at
the same time form the spindles on which they turn; together with these rollers
we employ a funnel e whose axis is co-incident with that of the die groove which
precedes it the funnel being fixed in front of the next pair of rolls. For oval die
grooves we employ rollers with suitably curved peripheral surfaces as shown at
a a'; for flat and square shapes however, conical rollers 6 b¹.
The characteristic feature of this arrangement consists in that, that two rollers of
the same shape are placed side by side in the manner shown in the drawing, so that
one has its base at the bottom, the other its point or apex, so that their taper and
their distance from the pair of rolls will determine the extent of twist which is
given to the rod when it passes through the rollers.
If the rod passes from an oval die groove to a square or round one, in the next
pair of rolls, it must be turned in a rectangle; in rolling flat bars, as for instance
in making boop iron, the turn is 180°
The shape of the rollers a a' and 6 b' and their distance from the preceding pair
of rolls as well as from the succeeding one, will therefore have to be determined
according to these requirements.
The funnel e catches the rod coming from the pair of rolls and corrects any
deviation of the rod from the position requisite for its introduction into the next
pair of rolls; its end is of that cross-section which the last pair of rolls has
imparted to the rod and it conducts this latter to the next die-groove in a proper
position The width of the funnel in front will be chosen according to the deviations
from a straight line which are liable to occur in the path of the rod.

page_text: By this arrangement of apparatus, all choking is obviated and the tedious and
expensive inserting and twisting of the rods by hand can by its use successfully
be transformed into an automatic process.
Having now described our invention and the method of performing the same
We wish it to be understood that what We claim and desire to protect under the
herein before in part recited Letters Patent is
First In rolling mills with the pairs of rolls arranged one behind the other, the
combination of the guiding rollers a, a, b, b' with the receiving funnel e substantially
as described and illustrated.
Second-The turning devices, consisting of guiding rollers a, a, b, b¹ whose
peripheral surfaces are shaped in accordance with the cross-section of the rod or
bar which is to pass between them and so arranged that one roller has its base
corresponding to the apex of the other, substantially as set forth and shown.
In witness whereof we the said Friedrich Asthöwer and Toussaint Bicheroux
have hereunto set our hands and seals this fifth day of May in the year
of Our Lord One thousand eight hundred and eighty three.
TOUSSAINT DIGUEROTTY
Sel