Improvements in Grinding Apparatus for Wood of all Kinds and likewise for Wood-waste.
Year: 1886

page_text: Date of Application, 26th July, 1886
Complete Left, 15th Apr., 1887.
Complete Accepted, 17th May, 1887.
PROVISIONAL SPECIFICATION.
Improvements in Grinding Apparatus for Wood of all Kinds and
likewise for Wood-waste.
I AUGUST FERDINAND ROTH of Harras near Kötzling in the German
Empire, Pap-Manufacturer, do hereby declare the nature of my said invention to be
as follows:-
:-
My invention relates to improvements in a wood grinding apparatus and what I
assert to be new in my invention consists in the combination of a mill or grind-stone
which, rotating on a horizontal axis is adjustable in its bushes, and has by means of its
rotatory motion against a resting stone, hollowed out cylindrical, a grinding com-
minuting effect on the material put into the apparatus. The apparatus is provided
with a conducting groove for the material to be ground for the wood or wood-waste;
the groove leads from the barrel containing the material.
The wood is seized by the rotating stone and drawn by it between the rotating and
the stationary hollowed-out stone by which process the wood is comminuted. The
wood leaves the apparatus on the other side and is reconducted by a second groove to
the barrel from which it came. The wood material in this barrel or reservoir is
soaked in water beforehand and is made to perform this circular course from the
barrel through the conducting groove to the stones and from them back through
the second groove into the barrel again until it is ground sufficiently fine.
By raising or lowering the position of the rotatory grind-stone the intermediate
space between the two stones can be regulated according as required so that the wood
may be ground coarse or fine. Owing to this arrangement my kind of wood material
or wood-waste of any size can be comminuted in this apparatus.
Dth 10th do. of Tule 1886
A. KUHNT & R. DEISSLER,
Berlin, Alexanderstr., 70.

page_text: Improvements in Grinding Apparatus for Wood of all Kinds and
likewise for Wood-waste.
I AUGUST FERDINAND ROTH of Harras near Kötzling in the German Empire,
Pap-Manufacturer 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:-
My invention relates to improvements in wood grinding apparatus and what I
assert to be new in my invention consists in the combination of a mill or grind-stone,
which, rotating on a horizontal axis, is adjustable in its bushes, and has by means of
its rotatory motion against a rosting stone, hollowed out cylindrical, a grinding
comminuting effect on the material put into the apparatus. The apparatus is provided
with a conducting groove for the material to be ground for the wood or wood-waste;
the groove leads from the barrel containing the material. The wood is seized by the
rotating stone and drawn by it between the rotating and the stationary-hollowed-out
stone by which process the wood is comminuted. The wood leaves the apparatus on
the other side and is reconducted by a second groove to the barrel from which it came.
The wood-material in this barrel or reservoir is soaked in water before-hand and is
made to perform this circular course from the barrel through the conducting-groove to
the stones and from them back through the second groove into the barrel again until
it is ground sufficiently fine.
By raising or lowering the position of the rotatory grind-stone the intermediate
space between the two stones can be regulated according as required so that the
wood may be ground coarse or fine. Owing to this arrangement any kind of
wood-material or wood-waste of any size can be comminuted in this apparatus.
In order to make the invention more clearly understood it is represented in
Figs. I-III.
Fig. I shows a section through the line M N, Fig. II a section through the
line P and Fig. III a view from above of the apparatus; the cap of the grind-
stone is taken off.
The apparatus consists in the wooden frame A, which contains the hollowed-stone i.
Four side-walls ascend from the hollowed stone i; two of them oo¹ are vertical;
whereas the others o* o are inclined. The side-walls o, o¹, o' fit close to the feed-
channel k; the side-walls o.o¹ o³ together with the escape plane e run into and lead to
the delivery channel m. A connecting-groove is formed between the channels kand m
by these side-walls, stone i and escape plane e. The real grinding-stone a, which is
mounted on the axle c rests in this connecting groove.. The axle c rests in its
bushes and the latter on the frame e ele, which is made to move and oscillate
round the hinges dd. The stone a resting on the frame e ele can be lifted or
lowered, according as the material has to be ground fine or coarse. The hinges d d
are the fulcrums of the frame. This lifting or lowering of the stone a is done by

page_text: means of the regulating-wheel g which is mounted on the shaft (axle) h. The latter
rests in the frame A. By means of the conical cog-wheels z z, mounted on the axle h
the cog-wheels z¹ z may be turned. According as they are turned these cog-
wheels z¹¹ turn or move the vertical axles the lower parts of which are provided
with a screw-thread. These parts of screw up and down the stationary
nuts, which are fastened to the beam e¹ of the frame e e¹ e³, so that they cannot
move or turn.
The frame ee¹e may be lifted and lowered by this regulating mechanism, well
known and employed at other apparatus and with it of course the grinding-stone a.
The grinding-stone a is covered over with a shell g¹ and is set in motion by the
strap-pulley R.
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:
In grinding apparatus:
A grinding-stone a which rotates on a horizontal axle, in combination with
a regulating mechanism and with the stationary hollowed out stone i for the purpose
as described
Dated this 13th day of April 1887.
A. KUHNT & R. DEISSLER,
38, Alexanderstr., Berlin, C. Germany,
Attorneys.