IMPROVEMENTS IN ROLLING MILLS AND IN GEARING THEREFOR."
Year: 1879

page_text: LETTERS PATENT to Reiner Daelen, of Düsseldorf, in the German Empire, for
the Invention of "IMPROVEMENTS IN ROLLING MILLS AND IN GEARING
THEREFOR."
Sealed the 11th July 1879, and dated the 24th January 1879.
PROVISIONAL SPECIFICATION left by the said Reiner Daelen at the Office
of the Commissioners of Patents on the 24th January 1879.
REINER DAELEN, of Düsseldorf, in the German Empire. "IMPROVEMENTS IN
ROLLING MILLS AND IN GEARING THEREFOR."
My Invention relates to an improved construction of universal rolling mill that
may be adapted for rolling iron of any required section, such as rails, angle, T, H,
sheet, or trough iron.
For this purpose the mill is divided into two separate parts, the one constituting
the preparatory rolling mill and the other the finishing rolling mill. The
preparatory mill consists of two horizontal pairs of rolls and two intermediate
vertical pairs, the former being driven from the millshaft by ordinary gearing,
while the latter are driven from the horizontal rolls by means of an intermediate
diagonal spur wheel, with skew teeth gearing, with spur wheels having ordinary
teeth, fixed both on the axis of the vertical and on that of the horizontal roll. The
rolls are so adjusted that the gauge of the iron is reduced to an equal extent on
passing through each successive pair of rolls, the gearing being so proportioned that
the surface speed of the successive rolls also increases in the samne proportion; the
vertical rolls are mounted on slides, so that when sheet iron is to be rolled they
may be slid back out of the way. On leaving the preparatory rolls the iron is led
directly on guide rollers to the finishing rolling mill. This consists of a scries of,
by preference, five pairs of horizontal rolls with intermediate vertical rolls, and also
with other vertical rolls arranged between the trunnions of the upper and lower
horizontal rolls, such first named vertical rolls serving to upset the metal at the
sides as it passes from the one pair of horizontal rolls to the next, while those last
named serve to form the flanges or heads on rails, T or H iron. In order to

page_text: counteract the lateral pressure that is put by the action of these rolls on the
horizontal ones, abutment screws are provided, carried by bridge pieces at
the one side of the framing, and made to bear against the end surface of the
trunnions of the rolls. As in the case of the preparatory rolls, the vertical rolls
are mounted in slides, so as to be capable of being withdrawn when not required.
The horizontal rolls are driven from the mill shaft by gearing so proportioned that
_each successive-pair-receives-an-equal-increase of the surface speed, the gauge of
the rolls being such that the metal is reduced in section to an equal extent by cach
-successive-operation, as described with reference to the preparatory rolls.
vertical rolls are rotated merely by the frictional contact with the metal as it is
drawn through. If it be desired to roll the sheet iron directly into angle, trough,
or other section by the same rolling mill, this may be effected by adding to the
above described train of rolls one or more pairs of rolls, grooved so as to form the
iron to the desired section. If desired also a further pair of rolls may be provided
for rounding the sharp edges of the iron after passing through the other rolls.
The
These last named rolls consist, by preference, of grooved discs mounted on axes
having right and left handed screw threads cut on them, so that they may be
adjusted to suit the section of iron to be acted upon by them.
It is preferred to drive the preparatory and finishing rolling mills independently
of each other. In this case if it is inconvenient to drive each mill by a separate
motor engine, the preparatory mill may be driven from the driving shaft of the
finishing mill by means of an endless wire rope passed several times round
multiple grooved pullies on the shafts of each mill, and an oblique guide pulley is
provided for leading the rope as it passes from the last groove of one of the said
pullies back to the first groove. The couplings of the roll shafts connecting them
to the spur wheel shafts by which they are driven are formed with external cogs,
so as to act as spur pinions which gear with pinions on the second roll shaft.