Improvements in Bruising or Coarse Grinding Mills for Grain, Seeds, Coffee, Spice, and the like.
Year: 1890

page_text: Date of Application, 24th Dec., 1890
Complete Specification Left, 1st Oct., 1891-Accepted, 7th Nov., 1891.
PROVISIONAL SPECIFICATION.
Improvements in Bruising or Coarse Grinding Mills for Grain,
Seeds, Coffee, Spice, and the like.
1, JOSEF GROSS of III Klischgasse 3, Vienna, Austria, Bookkeeper, do hereby
declare the nature of this invention to be as follows:-
:―
This invention relates to a bruising, coarse grinding, or rubbing mill in which
there are two vertically arranged discs whose inner surfaces face each other and
are furnished with tooth-like ribs, one of the discs being fixed, and provided at its
upper part with an inlet and at its lower part with an outlet for the ground
material, whilst the other disc is adapted to be rotated and, by means of a suitable
adjusting device, can be moved towards or away from the fixed disc, according to
the size of the grain or other material to be treated.
In one arrangement of mill according to this invention the fixed disc has a pro-
jecting rim that embraces the second disc. The latter is mounted loose on a screw
bolt carried by the fixed disc and can tlins be caused to rotate by means of a crank
handle, or by belt gearing from a shaft.
The teeth-like ribs on the discs are preferably arranged alternatelyfin a
fadial
direction and indirections perpendicular thereto. The entry of the material to be
ground, is effected by means of a feed hoppèr at the top of the fixed disc.
Adjacent to the inlet and discharge opening the fixed disc is cut away'or
recessed so as to form grooves for the reception of the material before and after
grinding.
1:
A device for moving the movable disc away from or nearer to the fixed. disc
comprises a two-part annular strap, fixed to the movable disc and arranged-to
embrace a rotary, sleeve or collar in such a manner as to hold it endways but
permits of its rotation. This collar or sleeve is provided with a toothed hand
wheel and with an internal screw thread whereby it forms a nut for the screw bolt
secured to the 'fixed disc. If the collar or sleeve be rotated by means of the hand
wheel, the distance between the two discs will be altered as desired. The fixing of
the collar or sleeve in any position of the discs in relation to each other, is effected
by means of a claw or tooth which enters between teeth on the hand wheel and is
fixed in a rotary manner to the screw' bolt.
COMPLETE SPECIFICATION.
wil
Improvements in Bruising or Coarse Grinding Mills for Grain,
Seeds, Coffee, Spice, and the like.
I, JOSEF GROSS of Klischgasse 3, Vienna, III, Austria, Bookkeeper, 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 bruising, coarse grinding, or rubbing mill in which
there are two vertically arranged dises whose inner surfaces face each other and
are furnished with tooth-like ribs, one of the discs being fixed, and provided at its
upper part with an inlet and at its lower part with an outlet for the ground
material, whilst the other disc is adapted to be rotated and, by means of a suitable
adjusting device can be moved towards or away from the fixed disc according to
the size of the grain or other material to be treated.

page_text: :
A mill according to my invention is illustrated in the accompanying drawings,
Fig. 1 being a front clevation, partly in vertical section,
Fig. 2 a cross section, and
Fig. 3 a horizontal section.
As shewn the mill is formed with two discs a and b, the disc a being fixed and
having a projecting rim a' that surrounds the periphery of the second disc b. The
disc b is mounted to turn freely on a screw bolt a carried by the disc a and can be
caused to rotate by means of a crank handle or by belt gearing from a shaft.
The inner sufaces of the two discs are each provided with groups of tooth-like
ribs which are preferably arranged alternately in a radial direction and in
directions perpendicular thereto. The entry of the material to be ground is
effected by means of a feed hopper d situated at the top of the disc a.
Adjacent to the inlet d and the discharge opening d' the disc a is cut away or
recessed so as to form grooves a³ for the reception of the material before and after
grinding.
3
The disc is capable of being moved nearer to or further away from the disc a
to render the apparatus suitable for the treatment of grains of various sizes as
before mentioned.
For this purpose there is fixed to the movable disc a two-part annular strap f
which embrace a rotary sleeve or collar y in such a manner as to hold it endways
but permits of its rotation.
This collar or sleeve g is provided with a toothed wheel gland with an internal
screw thread whereby it forms a nut for the screw bolt a² which is secured to the
fixed disc a. If the collar or sleeve g be rotated by means of the wheel g¹, the
distance between the two discs will be altered as desired. The fixing of the collar
or sleeve in any position of the discs in relation to each other, is effected by means
of a claw-or tooth k which enters between-teeth on the wheel gland is fixed in a
rotary manner to the screw bolt a²..
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what 1
claim is :-
1. A bruising or coarse grinding or rubbing mill, comprising two vertically
arranged discs a and b, whose inner surfaces face each other, and are provided with
tooth-like ribs, one of the discs a being stationary, and being provided with an
inlet d and an outlet d', and the other disc b being so arranged in relation to th
fixed disc as to be capable of being rotated and of being moved nearer to o.
further from the same by means of a suitable adjusting device.
2. In a grinding mill of the kind referred to in Claim 1, means for adjusting the
distance between the two discs a and b, said means comprising a rotary collar or
sleeve connected to the rotary disc so as to be capable of being rotated indepen-
dently thereof, and forming a nut for a screw bolt fixed to the disc a substantially
as described.
י
Dated this 29th day of September 1891.