Improvements in Kneading Machines.
Year: 1899

page_text: Date of Application, 13th Nov., 1899-Accepted, 6th Jan., 1900
Improvements in Kneading Machines.
I, CHRISTIAN FLECK, of Ohligs, near Cologne, Germany, Mechanical 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 follow-
ing statement :-
a manner
My invention relates to improvements in kneading machines, in which on
two rotary shafts, which are inclined towards each other and forming an acute
angle with each other, are mounted two systems of mixing armis or wings in
such
that
between tho
when the wings stand centrally
two shafts the wing of one shaft passes underneath the wing of the
other shaft alternately and that always the lower one of cach
system glides close over the surface of the respective bottom part of the trough,
the bottom of the kneading trough being thereby composed of two cone surfaces
slanting towards the middle from all sides and of one central part being hori-
zontal and straight in the central section line, but curved in the other directions.
The wings are so shaped, that on their rotation in the trough they have the
tendency to throw the dough towards the sides of the trough and to tear it
asunder, whereas the dough in consequence of the inclined bottom surfaces always
falls back towards the center, so that it will be raised and mixed always anew.
On the accompanying drawing
Figure 1 is a vertical section along line I--I of Figure 3 and
Figure 2 is a similar section along line II--II;
Figure 3 is a top view.
The trough A of peculiar shape, which I will describe more particularly here-
after, is mounted on a frame B which also supports the bearings C of the driving
shaft D and also the bearings of the intermediate shaft F. A pinion G on
shaft I transmits the power to a spur wheel H on shaft F, while cone pinions K
and Ki on shaft F transmit the power by conewheels L, L1 to the mixing
shafts M, M. The mixing shafts are guided in long bosses N, N1 at the
bottom of the trough; inside of the trough they carry mixing arms ог
wings P P1 so mounted on the shafts, that the wings P of each shaft pass
underneath the wings P of the other shaft and that the lower wings glide along
close on the surface of the bottom of the trongh. From this it will be seen that
the bottom is composed of three parts, the two outer parts R and R 1 forming
parts of true inserted cones and intersecting each other and the central part $
between the cone surfaces R and R 1 forming a warped surface of such shape that
its section line with the vertical plane in line I-I is straight and that its section
line with the vertical plane in line II-II is curved as seen in Figures 1 and 2
respectively. The circumference or sides of the trough is formed of two
cylinders T and T1 intersecting each other.
From the arrangement of the gear wheels it will be seen that one of the
shafts M turns in the direction of the handle of a clock and the other in the
opposite direction and by this action they mix the dough in the best possible
manner and, throwing it towards each other first in the middle and then tearing

page_text: it asunder and throwing it towards the sides during about two thirds of the
rotation and in consequence of the inclination of the bottom parts R and R1
the dough glides or sinks towards the central part S.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed, I declare that what
I claim is:
—
A kneading machine for dough characterized by this, that its trough A is
formed of parts of two hollow cylinders T and T 1 partly intersecting each other
and that in said trough mixing arms or wings 1' and P1, respectively, are
mounted so on shafts M, M 1 entering obliquely from below into the trough and
guided by bosses N, N1, that by their rotation in opposite directions they pre-
scribe cone surfaces which intersect each other, and to the lower ones of which
surfaces the bottom R, R1, S of the trough is made to correspond; bevil
wheels L, L1 being keyed to the lower enda of the shafts M, which are set in
motion by pinions K and K 1 on a lay shaft F which itself receives motion by
a spur wheel H and a pinion G on a driving shaft D, the whole as described and
illustrated and for the purpose set forth.
Dated this 10th day of November 1899.
CHRISTIAN FLECK,
Per Karl J. Mayer,
Agent.