in disintegrators or machines for crushing, grinding and pulverising by
Year: 1899

page_text: I, CHRISTIAN EUGEN KREISS, Papenstrasse 34, Hamburg, in the German Empire,
Civil Engineer, do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in disintegrators or machines for
crushing, grinding and pulverising by percussion.
Up till now, disintegrator mills with a rotating grinding-and-sifting-drum,
for instance, a mill with falling balls, have the disadvantage that the substances
to be ground together with the bodies for reducing or grinding them roll down
on the same side as that on which they are raised, and consequently they fall
in an opposite direction to the direction of rotation of the druni, whereby much
power is lost and only a small falling height obtained.
The present disintegrator mill obviates this disadvantage and by arranging
inside the grinding drum rast therewith and partaking of its rotation, an inner
smaller grinding track of. cylindrical or polygonal shape, or an independent
rotating beater device respectively the performance or output of the mill, especi-
ally for fine grinding, is improved or increased.
The material to be ground together with the reducing bodies (balls etc.,) is,
as is best for this purpose, raised by means of ribs or troughs on the periphery
of the grinding track to above the axle, so that it falls down on the other
side, in the same direction as the drum is rotating on, on to the walls of the drum
and so exerts an auxiliary driving influence thereon, whereby considerable power
is saved. Also the material returned or rejected from the sieve falls in the same
way and not as hitherto in a direction opposed to that of rotation.
The ribs or scoop-troughs on the grinding way are at certain parts perforated
with holes through which falls the material reduced to a certain fineness on its
way to the first or coarse sieve and thence to a finer sieve which surround the
grinding track drum, and are of course of any desired mesh. The continuity of
these sieves is broken by one or more collecting receivers into which falls the
sieve rejections in order to be again guided into the grinding space by the rota-
tion of the drum, which is effected by the contents of each receiver shooting out
past a guiding surface through an opening in the scoop in front, as soon as it
passes its highest point. Each receiver is composed or built-up of unperforated
or whole plates or surfaces, the rear surface of the adjacent scoop-trough and
a partition connecting these two. These receivers or pockets are provided with
lids so that their contents can be got at from the outside for sampling and the
working of the mill controlled by the insertion of more or less balls. The exit
opening of the exit-scoop-troughs is larger than the perforations of the three
other scoops which belong to each series, whereby a block or jamb in the space
between the sieves and the scoops, and the actual drum, is impossible. Instead
of providing perforations in the scoops, these perforations may be provided in
the walls of the drum between each scoop.
The arrangement of rejections receivers and scoop troughs in such grinding
and sifting drums allows also the employment of a beater device within the

page_text: interior of the grinding track drum. The construction of such beater devices
is well known; it is however preferred to use a beater which consists of a series
of arms radiating from an independent beater shaft passing centrally through
the grinding track drum; the latter and the beater shaft being revolved sepa-
rately. The outer or free ends of the said beater arms of which two parallel
rows are provided, carry the transverse beater blades proper. In order to attain
the best and most economical results, the drum and beater are revolved in one
and the same direction.
Dated the 23rd day of December 1899.
PHILLIPS & LEIGH,
Agents for the Applicant.
I, CHRISTIAN EUGEN KREISS, of Papenstrasse 34, Hamburg, in the German
Empire, Civil Engineer, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:-
This invention relates to improvements in disintegrators or machines for
crushing, grinding and pulverising by percussion.
Up till now, disintegrator mills with a rotating grinding-and-sifting drum,
for instance, a mill with falling balls, have the disadvantage that the substances
to be ground together with the bodies for reducing or grinding them roll down
on the same side as that on which they are raised, and consequently they fall
in an opposite direction to the direction of rotation of the drum, whereby much
power is lost and only a small falling height obtained.
The present disintegrator mill obviates this disadvantage and by arranging
inside the grinding drum fast therewith and partaking of its rotation, an inner
smaller grinding track of cylindrical or polygonal shape, or an independent
rotating beater device respectively the performance or output of the mill, especi-
ally for fine grinding, is improved or increased.
The material to be ground together with the reducing bodies (balls etc.,) is,
as is best for this purpose, raised by means of ribs, pockets or troughs on the peri-
phery of the grinding track to above the axle, so that it falls down on the other
side, in the same direction as the drum is rotating on, to the walls of the drum
and so exerts an auxiliary driving influence thereon, whereby considerable power
is saved. Also the material returned or rejected from the sieve falls in the same
way and not as hitherto in a direction opposed to that of rotation.
That my invention may be fully understood, I will describe the same in detail,
reference being had to the accompanying drawings, in which:-
―:
Figures 1 and 2 are vertical sections at right angles to each other of a dis-
integrating machine embodying my invention;
Figures 3 and 4 are similar views illustrating certain structural modifications.
The disintegrator mill (Figures 1 and 2) consists of a revoluble drum a pro-
vided at its inner periphery with a plurality of pockets or troughs e which lift
the material (or some of it) and the balls (or some of them) provided such reduc-
ing bodies are added to the material to be ground until above the shaft 6 of the
drum a.
As soon as a pocket passes the vertical dead-centre above the axis of
rotation its contents drop out and fall down at the other side, in the same direc-
tion as the drum revolves, against the imperforate walls of the drum a and partly
against or upon the wall of an inner smaller auxiliary drum fast with the outer

page_text: drum a and partaking of its rotation; the inner drum being provided with
scoops m or with pockets, ribs or une like which assist the pockets in lifting
the material and balls respectively over the axis of rotation.
The pockets or scoop-troughs c on the grinding way of the drum are at cer-
tain parts perforated or provided with holes o through which falls the material
reduced to a certain fineness on its way to the first or coarse sieve d and thence
to a finer sieve e which sieves surround the grinding drum a and are of course
of any desired mesh. The continuity of these sieves is broken by one or more
collecting receivers f into which falis the sieve rejections in order to be again
guided into the grinding space by the rotation of the drum, which is effected
by the contents of each receiver f shooting out past a guiding surface g through
an opening in the scoop in front, as soon as it passes its highest point. Each
receiver is composed or built-up of unperforated or whole plates or surfaces i,
the rear surface of the adjacent pocket or scoop-trough and a partition & con-
necting these two. These receivers f are provided with lids or the like arranged
in the plates i but not shewn in the drawing so that their contents can be got
at from the outside for sampling and the working of the mill controlled, by the
insertion of more or less balls. The exit opening of the exit-scoop-troughs is
larger than the perforations of the three other scoops which belong to each
series, whereby a block or jamb in the space between the sieves d and e and the
scoops c and the actual drum a, is impossible. Instead of providing perforations
in the scoops, these perforations may be provided in the walls of the drum between
the scoops or pockets c.
The arrangement of rejection receivers f and scoop-troughs or pockets in
such grinding and sifting drums allows also in place of the inner auxiliary drum
the employment of a beater device n within the interior of the grinding track
drum a.
In Figures 3 and 4 I have shewn a disintegrator mill embodying this
modified construction. The construction of the beater device itself is well known;
it is however preferred to use a beater which consists of a series of arms radiat-
ing from an independent beater shaft passing centrally through the grinding
track drum a the latter and the beater shaft being revolved separately. The
outer or free ends of the said beater arms of which two parallel rows are provided,
carry the transverse beater blades proper n'. In order to attain the best and
most economical results, the drum and beater are revolved in one and the same
direction.
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. In a disintegrator a revoluble drum provided on its inner periphery with a
plurality of ribs, pockets or the like adapted to lift the material by the rotation
of the drum until above the axis of the said drum, and to then release it or let
it drop respectively in the direction of the rotation of the drum, substantially
as and for the purpose set forth.
2. In a disintegrator a revoluble drum containing a comparatively large number
of comparatively small reducing bodies (balls or the like) and being provided
with means causing the latter and the material to be carried by the rotation of
the drum to such a high level as to drop when released in the direction of the
rotation of the drum substantially as and for the purpose set forth.
3. In a disintegrator a revoluble grinding drum provided with means for lift-
ing and releasing the material and reducing balls respectively in the direction
of the rotation of the drum in combination with a smaller drum inside the
grinding drum fast therewith and partaking of its rotation; the inner drum
being also provided with means for lifting and releasing the material and balls
in the direction of rotation substantially as and for the purpose set forth.
4. In a disintegrator a revoluble grinding drum provided with means for lift-
ing and releasing the material and balls respectively in the direction of the rota-

page_text: tion of the drum in combination with an independently rotating beater device
inside the said grinding drum and revoluble in the same direction as the grind-
ing drum, substantially as and for the purpose set forth.
5. In a disintegrator a revoluble grinding drum provided with means for lift-
ing and releasing the material and balls respectively in the direction of the rota-
tion of the drum; in combination with a sieve or sieves surrounding the grinding
drum, with outlets or holes in the lifting pockets, or in the walls of the grinding
drum respectively through which outlets or holes passes the material reduced to
a certain fineness on its way to the said sieves, with a plurality of receivers
adapted to collect the sieve rejections and to release the same again into the
grinding drum in the direction of the rotation of the latter, substantially as and
for the purpose set forth.
6. The improved disintegrator constructed arranged and operating substan-
tially as hereinbefore set forth.
PHILLIPS & LEIGH,
22, Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Applicant.