New or Improved Machine for Pressing Dry or Moist Substances.
Year: 1897

page_text: Date of Application, 18th Feb., 1897-Accepted, 17th Apr., 1897
COMPLETE SPECIFICATION.
New or Improved Machine for Pressing Dry or Moist Substances.
We, CARL FICKELSCHEER, SIGISMUND RAHMER and GEORG KRÜGER, of
6 Töpfermarkt, Cassel, in the German Empire, 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 a machine for pressing and shaping dry or moist substances
such as cocoa, tea, coffee, succedaneum and the like, in which the substances to be
pressed are introduced into the moulds and, after being pressed by the pressing
stamps or plungers at pressures which are increased by steps or stages, are finally
pressed out of such moulds by the said stamps or plungers.
The accompanying drawing illustrates a machine constructed in accordance with
our invention,
Figure 1 is a side view, Figure 2 a front view, Figure 3 the upper part of the
machine with press or mould cylinder or plate, drawn to a larger scale,
Figure 4 a plan view of Figure 3,
Figure 5 a plan view of Figure 1, the upper part being removed,
Figure 6 the mould filling apparatus,
Figure 7 the apparatus for pressing back the pressing plungers.
e,
In the lower part of the frame a is arranged the driving shaft b, which is furnished
at one end with fast and loose pulleys c c¹, and at the other end with a fly-wheel c².
The toothed wheel d fixed on this shaft 6 gears with a toothed wheel d¹ of a shaft
the eccentric f on which is connected with the toggle links 9 and g¹ by means of
the eccentric rod f¹ and the pin h for the purpose of effecting the upward and
downward movements of the press-head i. This latter is supported by columns or
pillars k, the lower ends of which are connected with a cross-head operated by
the toggle link g composed of two bars, as shown in Figure 2, whilst the toggle
link g is connected with a bracket 1 of a plate resting on the frame a.
In the press-head i is placed the mould cylinder or plate m, so as to rotate round
the pin m. At each upward movement of the press-head this mould plate m is
rotated to a certain extent. This is effected as follows:-When the press-head i
moves up and down a bell-crank lever o, which is pivotted on the fulcrum pin o¹
fixed to the press-head i, is moved by a rod n¹ pivotted at n to the fixed plate l'.
At the lower end of the vertical arm of the bell-crank lever o is pivotted a ratchet
pawl p, which is pressed, by means of a spiral spring, against ratchet teeth formed
on the periphery of the mould plate m, so that each upward movement of the press-
head i effects a corresponding rotation of the mould plate.
In the mould plate m is arranged a number of pressing stamps or plungers q
which are free to move up and down in the moulds but cannot fall out. These
pressing plungers, after every rotatory movement of the mould plate that is to say,
after the upward movement of the press-head i, come to bear on the upper ends of
the pins or studs q' which are of different lengths, and are screwed into the fixed
plate, so that when the press-head i moves downwards it effects a pressing together
of the substances present in the moulds, formed by the recesses of the mould plate
and the upper ends of the pressing plungers which fit into the said recesses the said
substance being pressed by the pressing plungers against the lower surface of the
press-head i. When the press-head i is raised again the mould plate m receives another
Price 8d1

page_text: partial rotatory motion so that the pressing plungers 9 take up fresh positions with
reference to the pins or studs q'. And when the press-head again descends it
imparts a further pressure to the substance contained in the moulds corresponding to
the lengths of the pins or studs q', 'until finally the substance which has been
sufficiently pressed by the successive pressing operations is pushed out by means of
the pressing plunger through an aperture in the press-head i corresponding to that.
one of the moulds of the mould plate in which the final pressure has been administered.
It may, however, be remarked that the amount by which the mould plate m is
rotated each time must agree exactly with the distances of the pins or studs q¹
from one another so that each mould is. brought each time it is. moved, over a
pin the top of which stands higher above the plate than that of the preceding
one. The number of ratchet teeth on the mould plate must also agree with
the number of stamping plungers 7 and pins or studs q².
The receiver serves for the reception of the substances to be pressed, and is
divided into an upper and lower part by means of a sieve . In this receiver is
arranged a stirring mechanism, worked in the following manner :-From the shaft e
an elastic pulley bands gives motion, by means of two bevil-wheels s², to the
vertical shafts, which is provided with arms for effecting the stirring. At the
lower end of the shaft is a stirrer v, which is provided with a helical spring.
This spring in passing the filling hole secures complete filling of the pressing
moulds by springing, as it passes, into the said hole, as shown in Figure 6.
In order that the pressing plunger y, which has effected the forcing out of the
cake may be pressed back again automatically after the contents of each separate
mould have been pressed and forced out through the press-head, a two-armed lever t
is attached to the press-head (Figure 7). One end of this lever is in connection
with the adjustable rod t¹, the lower end of which is formed as a fork that takes over
the shaft e. The other end of the two-armed levert rests in the forked end of the
pin u which is pressed upwards by means of a spring. Close to the fork of the rod t¹
is a tappet w, secured on the shaft e. At each rotation of the shaft e this tappet comes
against the roller w¹ situated immediately over the fork, and operates the rod t',
levert and pin u so as to press the plunger 7 out of the hole v and down into its
mould in the mould plate in free of the press-head i.
After the receiver r is filled with the substance to be pressed and the machine is.set
in motion the substance in the upper part of the receiver is pressed through the
sieve by the stirring arms into the lower part of the receiver and thence through.
the filling hole in the press-head, into each in succession of the moulds of the mould.
plate m, the completion of the filling being effected by means of the helical spring on
the stirring arm v. As the machine continues its motion, every upward movement. of
the press-head i causes the mould plate m to be rotated to the extent of one tooth
of the ratchet, that is to say to an extent corresponding to the distance between two
moulds, and at every downward movement of the press-head a mould is filled and a
plunger 9 pressed downwards by the pin after it has pushed out the completely
pressed cake of material, and pressure is administered to the substance in each mould.
These processes are repeated at each rotation of the shaft e; all that is necessary being
to keep the receiver filled with the substance to be pressed.
It will be understood that by means of the adjustable pins or studs q¹ the pressure
can be regulated to suit the substance to be pressed.
Having now particularly described and ascertained the nature of the said inven
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
First. A machine. for pressing dry or moist substances, having a mould plate.
containing several moulds for the reception of the substance to be pressed, such mould.
plate being arranged to rotate intermittently round a vertical axis, and to be moved
vertically up and down for each pressing operation, a pressing plunger contained in
each, mould and adapted to remain constantly in such mould, and adjustable, pins. or
studs of successively increasing heights arranged to act on the pressing. plungers s0.38

page_text: to cause the same to exert a pressure upon the substance to be pressed which increases
by steps or stages as the mould plate is rotated, substantially as described.
4+
Second. In a pressing machine of the kind herein described the devices for pressing
back automatically the pressing plunger into the mould plate after the ejection of a
completely pressed cake of the substance being operated upon, which devices consist
of the spring-urged pin u, lever t, and adjustable rod t', operated by a tappet w on the
main shaft of the machine, substantially as described.
Third. In a pressing machine of the kind. herein described the arrangement of
stirring mechanism operated by the machine itself and adapted to press the substance
to be operated upon into the mould which has been set free by the last ejecting
operation substantially as described.
хойay or rebruary 1004.
C. FICKELSCHEER,
S. RAHMER,
G. KRÜGER,
Per W. H. Beck,
115 Cannon Street, London, E.C., Agent.