Year: 1886

page_text: Date of Application, 12th Apr., 1886.
Complete Left, 30th Dec., 1886.
Complete Accepted, 1st Feb., 1887.
I, WILHELM LORENZ, of No. 61 Krieg Strasse, Carlsruhe, Baden, in the German
Empire, Manufacturing Engineer, do hereby declare the nature of this invention to be
as follows:
According to my invention 1 construct a hollow or ring shaped roller, within which
is a cylindrical roller, the outer surface of the latter and the inner annular surface of
the former being formed with the configuration which it is desired to impart to the
article to be shaped. The annular roller is supported on its outer surface by a strong
bed, and has a toothed ring formed upon it by which it can be rotated by suitable
driving gear. The inner roller is mounted on a strong axis carried by a lever or
otherwise in such manner that it can be moved to one side so as to approach with its
periphery nearer to the inner periphery of the annular roller at one point than at the
other points, thus forming between the two rollers an annular space that gradually
diminishes in width from one point to a point diametrically opposite. The inner roller
is either made to revolve in the contrary direction to the annular roller, at a different
surface speed, or the inner roller may remain stationary. In either case it will be
seen that if a cylindrical piece of metal he introduced into the annular space between
the rollers at the point where this is widest, the rotation of the annular roller will cause
the metal to roll round in the annular space while at the same time it is subjected to
the squeezing action due to the gradually narrowing space between the two rollers,
and thus the metal will gradually have the beforementioned configuration of the inner
and outer rollers imparted to it, after which it will travel round to the wide part of the
annular space again, where it can be removed.
The adjustment of the inner roller to the required extent towards the annular roller
may be effected either by the direct action of a hydraulic cylinder or screw, or the axis
of the roller may be mounted on a lever pivotted at one end on the driving shaft of
the machine and having its other end adjusted by a screw spindle. The said lever
carries a toothed pinion gearing with a pinion on the driving shaft and with a toothed
wheel on the axis of the roller, so proportioned to the toothed gear driving the annular
roller as to impart to the rollers the required different surface speeds in contrary
directions.
ABEL & IMKAY,
28, Southampton Buildings, London, W.C.,
Agents for the Applicant.

page_text: improvements in Roller Presses for Shaping Metals.
I, WILHELM LORENZ of No. 61 Krieg Strasse, Carlsruhe, Baden, in the German
Empire, Manufacturing 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:-
My invention relates to an improved construction of that description of roller presses
for shaping metals in which a hollow or ring shaped roller operates in combination
with an inner roller in such a manner that the outer periphery of the inner roller
approaches the inner periphery of the outer roller at one point to a distance
corresponding to the diameter of the article to be produced, the two rollers being
made to revolve in contrary direction so as to act upon the article, introduced at such
point, and impart to it the configuration of the inner surface of the ring shaped roller
and the outer surface of the inner roller.
1 will proceed to describe my improved construction of such apparatus with reference
to the accompanying drawings, in which Fig. 1 shews a front view of the machine,
Fig. 2 a sectional plan, and Fig. 3 a longitudinal section. A is the outer annular
roller and B is the inner roller which can be moved with more or less force towards
the periphery of the outer roller. The outer roller is supported on its outer periphery
in a strong annular bed C and has a toothed ring a formed upon it by which it
receives rotary motion from the toothed pinion a. The roller B is fixed on a shaft B¹
carried by a lever B₁ B B which has its fulcrum on the driving shaft B3 and can
have its other end moved up or down by means of the screw spindle with hand
wheel so as to cause the roller B to be pressed with greater or less force, due to the
leverage, on to the object introduced at I at bottom between it and the outer roller.
By means of the toothed wheel R² on the shaft B₁ and the driving gear R R¹, of
which R is situated on the same shaft as the wheel a that drives the roller A, the
roller B receives the necessary rotary motion in the contrary direction to, but with the
same angular velocity as, and therefore different surface speed from, the roller A.
If now a rod S or a piece of metal sis introduced between the rollers and the inner
roller is pressed against it, then as the outer roller will act upon it at a greater surface
speed than the inner roller, it will be caused to rotate in the direction. of the arrow I
and it will be made at the same time, by means of the pressure, gradually to assume
a configuration corresponding to that of the two rollers. The inner roller might also
be made to revolve at a greater speed than the outer one, or the axis of the inner roller
might run in fixed bearings and the outer roller be adjusted as described, such
adjustment being effected either by a screw as described or by other means such as
hydraulic power, acting either directly or indirectly.

page_text: Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed I declare that what I claim is :-
The construction of roller presses consisting of an annular roller A running with
its outer surface in an annular frame C and having a toothed ring a by which it
receives rotary motion, within which is a roller B made to revolve at a greater or less
speed in the contrary direction to A, whose axis B is mounted in a lever B' B² B*
having its fulcrum on the driving shaft B³ and which is moved up or down by means
of screw or other power, so that the roller B can, during the rolling or pressing
operation, be gradually approached towards the roller A and thus be made to gradually
impart the desired configuration to the object situated between them.
ABEL & IMRAY,
Agents for the Applicant.