Process and Apparatus for Preparing Dough Directly from Grain.
Year: 1899

page_text: Date of Application, 11th May, 1899 - Accepted, 1st July, 1899
COMPLETE SPECIFICATION.
Process and Apparatus for Preparing Dough Directly from Grain.
I, OTTO SCHILLER, Master Baker, of 1, Wiesenstrasse, Plauen, in the Empire
of Germany, 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 consists in a process for preparing dough directly from grain,
and the apparatus necessary thereto."
The operations carried on, and which constitute the essential part of the inven
tion, are explained with the aid of the accompanying drawing, and in which:
Fig. 1 is a sectional elevation and Fig. 2 a sectional plan of a centrifugal
apparatus or separator.
Figs. 3 and 4 are transverse sections of the same.
The grain to be treated, whether rye or wheat or a mixture of the two, after
the usual cleaning, is reduced to coarse flour by means of a suitable machine, and
the loose flour then separated by means of a brushing mechanism, from the parts
still connected with the husk.
The parts connected with the husk are steeped in warm or cold water, in a
suitably shaped vessel, and, after the softening process has been completed, are
conveyed to a centrifugal apparatus of the kind illustrated in Figs. 1 to 4.
As a consequence of the action of the centrifugal force, not only flour, but
more particularly the glutinous parts which, especially in wheat, adhere to the
husk, are completely dissolved and thrown out of the centrifugal drum or cylinder,
whilst the husk itself remains in the interior thereof.
The centrifugal apparatus employed for separating the husk is specially
arranged, in the manner that will be understood by reference to the drawing and
the following description:
In the casing b is a perforated drum or cylinder d one side of which only is
fixed by means of a disc, on the hollow driving shaft a, whilst the other and
free end has its bearing and support on bearing and guide rollers r.
The hollow driving shaft a is combined with a feed funnel or hopper t, and con-
tains besides the worms which conveys the material to the interior of the drum,
or cylinder.
In order that the material may be suitably distributed, distributing discs m m,
placed at a certain distance from one another, are arranged on the shaft u.
The material must be moved forwards in the longitudinal direction of the drum.
or cylinder, and for this purpose a special arrangement is made, which consists
in the employment of two carrying rails pp.
The carrying rails are furnished with obliquely arranged carrying plates,
in such a manner that the drum or cylinder, surface left untouched by the plates
of the first rail are swept by the plates of the next, or second rail, so that the
whole interior surface of the drum or cylinder is swept by the plates.
The rails are connected with the shaft, by means of the arms and have
short oscillating motion imparted to them by the shaft, whereby first the one,

page_text: and then the other, of the carrying rails p p, is carried against the interior of
the drum or cylinder and the oblique plates i brought into carrying action.
The shaft receives its short rotary motion through the lever h actuated by the
eccentric g.
The separated husky parts finally pass out of the drum or cylinder to the outlet z.
The flour and glutinous parts disintegrated from the husk by means of the
drum or cylinder are carried off from the casing 6 through the outlet o, (for the
purpose of being further treated), to suitable vessels.
If it be desired to produce a specially fine quality of dough, or, in other words,
a superior article of consumption, it is desirable that the material, disintegrated by
means of the drum or cylinder, should be again subjected to the action of the same,
or a similar centrifugal separator, but one furnished with small perforations, by
means of which any husky particles, not eliminated therefrom by the first treat-
ment, are separated from the flour.
The machine can be made in various sizes for power, or hand, working according
to the capacity required.
The farinaceous and glutinous elements eliminated, and completely separated
from the husk, are mixed, in their pulpy state, with the flour brushed off after
the bruising process, and prepared as dough ready for baking.
The process not only yields a considerably larger quantity of flour, but produces
a far more palateable and nutritious article of consumption.
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:
1. Process and apparatus for preparing dough directly from grain, which
consists in separating the grain, reduced to a rough mealy condition, from the
loose flour, by means of a brushing process, submitting the husk combined with
farinaceous elements to a softening process, and treating the softened or steeped
material with a centrifugal apparatus in such a manner that the husk is com-
pletely separated from the glutinous and farinaceous elements and the farinaceous
elements thereupon worked up, with the flour previously obtained by the brushing
process, into a dough ready for baking.
2. For carrying out the process indicated under Claim 1, a centrifugal apparatus
the distinguishing feature of which is that the hollow driving shaft a furnished
with a conveying arrangement in the form of a worm, or spiral, and distributing
discs m m, is connected with a disintegrating drum or cylinder d in which carrying
rails furnished with plates are arranged for the purpose of effecting the
former movement of the disintegrated material, which rails are brought alternately
against the side of the drum, or cylinder, by means of a lever h and an eccentric g
the coarser disintegrated material being removed from the machine at z and the
remainder passing through the side of the drum, or cylinder, at o.
Dated this 10th day of May 1899.
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C., Agents.