Improvements in Pressing Machines.
Year: 1899

page_text: Date of Application, 31st May, 1899-Accepted, 20th Jan., 1900
COMPLETE SPECIFICATION.
Improvements in Pressing Machines.
I, CARL FICKELSCHEER, of 36, Leipzigerstrasse, Cassel, in the Empire of Ger-
many, 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:
-
It is well known that in pressing certain substances it is often necessary to
exert very great power, and in machines which consist of a press-drum with
separate plungers or stamps, at every separate pressing action a severe strain
is put upon the press-head and the upper part of the machine in a sideways direc-
tion which, in cases of specially heavy pressures creates a tendency for the whole
of the upper parts of the machine to be twisted.
The object of the present invention is to obviate this tendency and the invention
has special reference to machines for pressing substances requiring specially heavy
pressure.
The accompanying drawing illustrates in vertical section the upper part of such
a machine. is the press-head carried by rods k, and to which an alternately up
and down movement is imparted by any known means. is a fixed plate firmly
resting on the frame of the machine. In the press-head are two press-
drums m m, so mounted as to be capable of turning on the vertical axes or
bolts m¹ m¹ and geared together by teeth b in such a manner that they cause one
another to rotate one of them, whichever may be desired, is rotated by some
moving part of the machine, whilst the other receives the rotatory motion from
the first in the reverse direction by means of the teeth b. In openings or recesses
in the pressure drums m m are mounted the press plungers or stamps q, of similar
length and form, one or more of which in each drum may be brought into action
at each stroke of the press-head 7. The upper end of each of these press plungers
or stamps is suitably shaped to receive the material to be pressed as shewn at c
for example. The openings or recesses in the pressure drums m m are arranged
in a circle and the plungers or stamps are so arranged that the position of those
which are to receive pressure at the next downward stroke of the rods and press-
head coincides with that of the pressure bolts q' on which they bear and which
by receiving the downward strain of the pressure prevent any unequal or twisting
strain on the upper parts of the machine. The pressure bolts 21 may be so
accurately adjusted by means of the nuts d that the pressure on both is equal. A
gradual pressure may thus be exerted through a distance corresponding with the
travel of the pressure plungers and such pressure will be quite equal on both
sides.
The action of the machine is such that with every upward movement of the
press-head 7, the pressure drums are each rotated by the machine as far as the
angular distance between two plungers or stamps q. In this manner the action
of the pressure bolt q' on one drum is similar to that of the corresponding pressure
bolt q, situated at equal height, on the other drum. So that if for example a
downward movement of the press-head 7 sets in motion in the left hand drum

page_text: two plungers or stamps giving the preliminary pressure, and one giving the com-
plete pressure, the same action will also take place in the right hand drum.
It is obvious that at every pressing operation an action takes place on both
sides, and that therefore the heavy strain thrown upon the press-head is equalized
at both sides.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, I declare that what
I claim is
In pressing machines the arrangement of two pressure-drums in such manner
that one of them is rotated by the machine and rotates the other, the pressure
plungers and pressure bolts q' being so arranged that those at one side of the
machine correspond with those at the other side thereof, substantially as described
with reference to the accompanying drawing, and for the purpose specified.
Dated this 2
1000
C. FICKELSCHEER.
Per W. H. Beck,
Agent 115, Cannon Street, London, E.C.