Improvements in Mixing and Kneading Machines.
Year: 1891

page_text: Date of Application, 22nd June, 1891-Accepted, 28th Nov., 1891
COMPLETE SPECIFICATION.
Improvements in Mixing and Kneading Machines.
I, FRIEDRICH WESTMEYER, of St. Johann on Saar, 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:--
The invention represented in the accompanying drawings relates to a machine
for bread porcelain and similar factories in which the mixing and kneading for
which special machines were employed up till now, are combined in one machine in
a simple and effective manner.
In order to make my invention more clear I refer to the accompanying drawings
in which similar letters denote similar parts throughout the several views.
Figs. 1 and 3 show two modifications of my invention in vertical section.
Figs. 2 and 4 show the same in plan.
The device consists mainly of a rotating cylinder in which the material to be
kneaded is worked up it is then passed into the conical pressing device arranged
underneath the cylinder, whence it is pressed out through a mouth piece.
The rotating cylinder A. which is arranged to revolve on a central vertical
shaft J, is provided with a bevel crown gear B underneath as also two radially
situated ports X. The latter may be opened or closed by means of the revoluble
disc X2, which may be rotated a quarter of a turn.
The conical pressing space E is mounted under the cylinder on the frame G
having outlet G. This frame as also the standard H' are mounted on a suitable
bed plate, and bolted together, said bed plate being conveniently screwed to the floor.
In the standard H' are mounted the spindle carrying bevel pinion C as also the
gears D D. The sleeve A is rigidly connected to the rotary cylinder and carries
the cog N, as also inside this the revolving hollow shaft P₁ carrying the pressure
worm or propellor blade P. The sleeve M mounted on the spindle J' attached to
the right arm of the cross piece K carries the pinion N1 gearing into cog N, and M¹
engaging into cog M. On the upper left arm of the cross piece K, the stationary
shaft L is mounted, on the lower part of which the knife X as also the adjustable
scraper are arranged.
To the lower part of spindle J are rigidly attached the knives X X whilst
the sleeve M2 carries the large mixing spiral which is set in motion by means of
the driving gear N N¹. On revolving the cylinder A, the spiral O will be rotated
at a higher speed, in the opposite direction causing a thorough mixing kneading
and tearing of the dough. Three carrier rolls F are arranged to carry the cylinder A
in order to decrease the friction.
A light screen is arranged over the mixing trough or cylinder A to keep out dirt
and dust.
In the modification shown in Fig. 3 two mixing worms or spirals O and O¹ are
employed, the outer of which is carried by an intermediate sleeve M² on spindle J
said sleeve being rotated by a cog m gearing with cog M of the shaft J. The
spindle is driven by means of the cog M also gearing with M.
In this case the frame or standard His prolonged upwards and adapted to carry
the spindles J and L as also to form the upper bearing for the central shaft J and
its sleeve A¹.
The hollow shaft P1 is omitted here the central shaft A¹ being made to
gevolve and the propellor P attached directly thereto. It should be mentioned that
the scraper y is adjustable in both inodifications.
Both modifications may be arranged to be driven by hand or by means of belting,
with steam power.

page_text: The apparatus works in the following manner After the material to be worked
up has been placed in the cylinder A the machine is set in motion, whereby the said
cylinder will rotate in the direction of the arrow in Figs. 2 and 4. This causes
the mixing spiral O or spirals O, 0 to rotate at a higher speed and in the opposite
direction to the cylinder and to work up the material in a short time to a dough.
On opening the sliding disc X the mass will be thrown by the spirals Oor O
and and scraper Y into the pressure space E where it is forced by the propellor C
to the bottom whence it passes on through G and H to the oven.
Having now particularly described and ascertained the nature of my said inven-
tion and the manner of performing the same I declare that what I claim is :-
-
1) A combined mixing and kneading device, in which the material to be treated
is worked up in a rotating cylinder by means of mixing devices ( or O and O¹
revolving inside said cylinder in the opposite direction and at a higher speed said
material being finally pressed out at the mouth piece by means of the propellor P
substantially as described.
2) The apparatus substantially as herein before described and illustrated in the
accompanying drawings.
Dated this 22nd day of June 1891.
RAYNER & CASSELL,
37, Chancery Lane, London, W.C.