Sifting and Washing Machine for Sand, Gravel, Coal, Ores, and other Material
Year: 1895

page_text: Date of Application, 18th July, 1895
Complete Specification Left, 21st Mar., 1896-Accepted, 2nd May, 1896
PROVISIONAL SPECIFICATION.
Sifting and Washing Machine for Sand, Gravel, Coal, Ores, and
other Material.
We, CARL MARTINI and HUGO GRUPE of 13, Bahnhofstrasse, Lehrte,
Germany, Manufacturers, do hereby declare the nature of this invention to be as
follows:-
The sifting and washing machine for sand, gravel, coal, ores and other materials,
which is the object of the present invention, is furnished with a drum which
constantly revolves in water, and possesses an arrangement for turning the sifted
material, as well as the remainder, uninterruptedly out of the machine.
In a trough, which is carried by a box, a sifting drum revolves, the shaft of
which rests in bearings, and is rotated by any motive power. The box is filled to
the brim of the trough with water, so that the lower part of the sifting drum is
continually plunged in water. Through a feed box the material to be sifted is.
filled into the sifting drum which is provided at this end with a circular bottom..
The material now spreads itself out in the drum and is washed in it, whilst the
finer parts pass through the sides of the sifting drum into the trough. In this
they are freed from the adhering mud by a spiral worm, lying around the sifting
drum and at the same time transmitted to the other end of the trough. Here to
the sifting drum joins a hollow cone which carries a spiral worm on its exterior
surface as well as a spiral worm on its interior surface.
The exterior spiral worm transmits the sifted material, now freed from mud,
over the diminishing part of the trough into the outlet, whilst the interior spiral
worm transmits the remainder into the externally widening funnel, out of which it
falls into the outlet. In order to replace the water, which is continually carried
away by the sifted material and the remainder, new water is let in through a pipe.
Through the movement of the spiral worm, new water is continually carried over
the long edge of the trough out of the box into the trough, whilst the mud is
carried over the long edge of the trough into the box, out of which it can betimes
be removed. In order to facilitate the movement of the remainder inside the
sifting drum towards the cone, the interior surface of the sifting, drum may also be
provided with a transmitting worm.
Dated this 12th day of July 1895.
Sifting and Washing Machine for Sand, Gravel, Coal, Ores, and
other Material.
We, CARL MARTINI and HUGO GRUPE both of 13, Bahnhofstrasse, Lehrte,
Germany, Manufacturers 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 :-
The sifting and washing machine, for sand, gravel, coal, ores and other materials,
D

page_text: which is the object of the present invention, is furnished with a drum which
constantly revolves in water, and is provided with means for washing and turning
the sifted material, as well as the tailings, uninterruptedly out of the machine.
The accompanying drawing shows:
Fig. 1 a vertical longitudinal section,
Fig. 2 a vertical cross section of the machine.
In the trough D, which is carried by the box E, the sifting drum A revolves,
the shaft B of which rests in the bearing C, and is rotated by any motive power,
in the drawing by a crank handle. The-box-E-is-filled to the brim of the trough D
with water, so that the lower part of the sifting drum A is continually plunged in
water. Through the feed box o the material to be sifted is filled into the sifting
drum A which is provided at this end with a circular bottom p. The material now
spreads itself out in the drum and is washed in it, whilst the finer parts pass
through the sides of the sifting drum A into the trough D. In this they-are freed
from the adhering mud by the spiral worm a, lying around the sifting drum A, and
at the same time transmitted to the other end of the trough D. Here to the
sifting drum A joins a hollow cone F which carries a spiral worm f on the exterior
surface as well as a spiral worm 9 on its interior.
The spiral worm transmits the sifted material, now freed from mud, over the
inclined portion c of the trough D into the outlet d, whilst the interior spiral
worm 9 transmits the remainder into the outlet i. In order to replace the water,
new water is let in through a pipe k. Through the movement of the spiral worm a,
new water is continually carried over the long edge m (Fig. 2) of the trough D
out of the box E into the trough D, whilst the mud is carried over the long edge n
of the trough D into the box E, out of which it can betimes be removed. In order
to facilitate the movement of the tailings inside the sifting drum A towards the
cone F, the interior surface of the sifting drum A may also be provided with a
transmitting worm.
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 sifting and washing machines for sand, gravel, coal, ores and other
materials, the combination of a rotating sifting drum A with a worm a serving for
the transmission and washing of the sifted material and with a trough D filled with
water into which the lower part of the sifting drum A plunges, as described.
2. In sifting and washing machines for sand, gravel, coal, ores and other
materials the combination of a sifting drum A. provided with an external worm a,
with a trough D filled with water, a diminution c of this trough, and, joining to the
sifting drum A, a hollow cone F which has an external worm f, for ejecting the
sifted material, and an internal worm g for ejecting the remainder.
Dated this 14th day of March 1896.
CARL MARTINI:
HUGO GRUPE.