Year: 1893

page_text: Date of Application, 15th Feb., 1893
Complete Specification Left, 11th Mar., 1893-Accepted, 6th May, 1893

page_text: When the changing over of the collecting tanks is effected in the known manner
by the reversal of the flap D' at the branched shoot, the coal passes into a tank F
filled with water, in which it sinks down gradually so as to descend through a con-
siderable. height without becoming broken up. After the discharge of the water
the nuts are discharged from the tanks F by falling freely into the railway trucks
situated immediately below.
The washed slack is discharged from the two small mesh washing jiggers by
means of the washing water which unites at E' with the washing water of the nuts
flowing from the tops of the collecting tanks F and which is led through a shoot E'
on to a sieve G. This sieve allows the fine grain coal to pass through while the
comparatively small quantity of larger coal still contained therein passes on to the
transporting band H by which it is led to a centrifugal crushing machine or grinding
mill, where it is ground down.
The slack falling through the sieve G, passes together with the washing water
into the collecting tank K. From this collecting tank the water flows off at top
through shoots K while the slack is led on the inclined planes K' to a transport
band L by which it is led to chain buckets M.
These chain buckets serve to raise firstly this slack, secondly the ground slack
coming from the mill I, and thirdly the coal coming from the screening drum C in
the form of dust to full in., through a pipe C³, up to a worm N which distributes
this mixture of coals into two tower like collecting tanks O. From these collecting
tanks the coal is made to fall directly either into railway trucks or into carts for
conveying it to coke ovens.
The sludge separated from the coal in the washing jiggers is conveyed by a worm,
perforated chain buckets, and hoppers P¹ into collecting tanks from which it is
discharged into carts to be conveyed to wherever required.
The water discharged through shoots K' from the tops of the collecting tanks K,
which constitutes the greater part of the washing water employed, passes simul-
taneously with the water flowing off from the bottoms of the tanks into the sludge
sump R or into the two sumps S, from which it is raised again by the pump T to
be supplied to the screening drum C.
The arrows shewn on the drawing indicate this circulation of the water. The
coal sludge is raised out of the sump R by chain buckets U and supplied to the
transporting band L, by which, and by the chain buckets M the sludge is conveyed
to the collecting towers O.
All the above described combined apparatus of the coal washing installation are
driven by means of a steam engine V Fig. 8 and the washing jiggers are driven
by a compressed air engine W.
Dated this 15th day of February 1893.
ABEL & IMRAY,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Apparatus for Simultaneously Washing Coals or other Minerals,
Sorted into Various Sizes, with Repeated Use of the Washing
Water.
I, FRITZ BAUM, of Herne i/W. 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 relates to a combination of apparatus which are known in their
separate use, but which are, according to my invention, so combined that small
coal, or a mixture of coal dust from 0 to full inch and small coal (nuts &c.)
from about full in. to 2 in. (in cube or in diameter) are sorted in a dry condition
and are then simultaneously washed in such sorted condition and are conducted to
the loading places, the whole of the washing water being taken from a sump, and

page_text: Figs.
and 49 Fig. 1.
8 and 9 show sectional plans of the different floors taken on lines m m, pp,
The small coal to be sorted and washed is obtained in the known manner by
discharging the coal as it comes from the pit upon a screen having meshes about
2 ius. in size, through which the small coal falls into a receptacle A.
The large coal remaining upon the screen passes on to a travelling apron that
leads it into the trucks.
The small coal in the receptacle A. is raised by endless chain buckets B into a
sorting drum C consisting of five concentric drums, in which it is sorted in the
known manner into six different sizes, namely nuts of about full in. to 24 in., and
slack from full in. to full in. At the same time a pump, by preference a
centrifugal pump T is made to raise the washing water from the sump S to the
shoots C, where it serves in the first place to conduct the four largest kinds of coal,
or nuts of from full in. to 24 in. to four coarse mesh washing jiggers D, and the
two small kinds of coal or slack from full in. to full in. to two fine mesh
washing jiggers E. In these several machines the coals are washed in the known
manner.
The washed nuts are conveyed by means of the washing water from the four
coarse mesh washing jiggers through four shoots D₁ to the collecting tanks F. For
each sort of nuts there are two collecting vessels F, and the shoots are branched to
correspond.
These vessels are worked alternately in such manner that during the charging
of the one tank the second one firstly has its water discharged and is then emptied
of its contents, after which it is again filled with water. The discharge of the
water is effected by causing the greater part thereof to be forced upward by the
entering coal, and to flow off through upper channels F¹. A smaller quantity of
the water flows off at bottom through a sieve box F and pipe F.
When the changing over of the collecting tanks is effected in the known
manner by the reversal of the flap D' at the branched shoot, the coal passes into a
tank F filled with water, in which it sinks down gradually so as to descend through
a considerable height without becoming broken up. After the discharge of the
water the nuts are discharged from the tanks F by falling freely into the railway
trucks situated immediately below.
The washed slack is discharged from the two small mesh washing jiggers by
means of the washing water which unites at E¹ with the washing water of the
nuts flowing from the tops of the collecting tanks F and which is led through a
shoot E' on to a sieve G. This sieve allows the fine grain coal to pass through
while the comparatively small quantity of larger coal still contained therein
passes on to the transporting band H by which it is led to a centrifugal crushing
machine or grinding mill I, where it is ground down.
The slack falling through the sieve G passes together with the washing water
into the collecting tank K. From this collecting tank the water flows off at
top through shoots K' while the slack is led on the inclined planes K' to a transport
band L by which it is led to chain buckets M.
These chain buckets serve to raise firstly this slack, secondly the ground slack

page_text: coming from the mill I, and thirdly the coal coming from the screening drum C in
the form of dust to full in. through a pipe C³, up to a worm N which distributes
this mixture of coals into two tower like collecting tanks O. From these collecting
tanks the coal is made to fall directly either into railway trucks or into carts for
conveying it to coke ovens.
The sludge separated from the coal in the washing jiggers is conveyed by a
worm, perforated chain buckets, and hoppers P' into collecting tanks Q from which
it is discharged into carts to be conveyed to wherever required.
The water discharged through shoots K' from the taps of the collecting tanks K,
which constitutes the greater part of the washing water employed, passes
simultaneously with the water flowing off from the bottoms of the tanks into the
sludge sump R or into the two sumps S, from which it is raised again by the
pump T to be supplied to the screening drum C.
The arrows shewn on the drawing indicate this circulation of the water. The
coal sludge is raised out of the sump R by chain buckets U and supplied to the
transporting band L, by which, and by the chain buckets M the sludge is
conveyed to the collecting towers O.
All the above described combined apparatus of the coal washing installation are
driven by means of a steam engine V Fig. 8 and the washing jiggers are driven by
a compressed air engine W.
In conclusion I desire it to be understood that I make no claim to any of the
separate apparatus herein described and referred to nor to the combination in part
of such apparatus as I am well aware that such apparatus and their partial com-
bination are not new.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, I declare that what I
claim is :-
1. Apparatus for simultaneously washing coal or other materials sorted into
different sizes so combined and arranged that the sorted materials coming from a
sorting drum are conveyed by the washing water raised from the sump into a series
of washing jiggers for the separation of the sludge therefrom, from which jiggers
the large grain coal is delivered to collecting tanks F for separation of the water
and direct delivery into the trucks, while the fine grain coal is conveyed from the
jiggers on to a screen G to be further sorted, the finer grain portion being conveyed
to collecting tanks K for separation of the water, while the larger grain portion
is conveyed to a grinding mill to be reduced in size, whereupon the fine grain
portion freed from water is conveyed by a transporting band L to chain buckets M
which convey it together with the ground portion and with the small coal and
dust falling from the sorting drum into tower like collecting vessels O substantially
as described.
2. In apparatus for simultaneously washing coal or other materials sorted into
different sizes the combination of a sorting drum C for sorting the small coal into
different sizes, washing jiggers D, E, into which the sorted coal is delivered by
means of the washing water raised from the sump, collecting tanks F into which
the larger sized coal is delivered from the jiggers D together with the washing
water and from which it is discharged directly into trucks, sieves G over which
the slack coming together with the washing water from the jiggers E is made to
pass in order to separate the larger grained portion, a grinding mill I for reducing
such portion to a smaller size, collecting tanks K into which the smaller grained
portion is made to pass and from which it is conveyed onto a transport band L,
chain buckets M receiving firstly the slack from the transport band L secondly
the ground coal from the mill I and thirdly the dust and small coal falling from
the sorting drum, tower like collecting tanks O, into which the said three kinds
of slack, ground coal and dust are delivered by a worm N, and tanks for
receiving the sludge separated from the coal in the washing jiggers, substantially
as described,

page_text: 3. In combined apparatus such as is referred to in the preceding claim the
employment of washing water in such manner that it is first raised by a pump
from the sump to the shoots of the sorting drum, whence it passes into the washing
jiggers, from these it flows partly to the collecting tanks F from which it passes
to the siere G, and partly it flows directly to the sieve G, thence it passes to the
collecting tanks K and from these partly by overflow and partly by drainage,
into the sludge sump R, whence it eventually passes back into the sump S in
order to recommence the same circuit substantially as described.
4. In the combined apparatus referred to in the preceding claims the com-
bination with the transporting band L and chain buckets M of chain buckets U
serving to convey the sludge from the sump R to the transporting band L in
order to be conveyed by the chain buckets to the collecting towers O together
with the small coal and dust substantially as described.
Dated this 11th day of March 1893.
ABEL & IMRAY,
Agents for Applicant.