Improvements in the Method of and Machinery or Apparatus for Cleaning Coal, Coke, Metal Ores, Pulps, and such like Materials.
Year: 1891

page_text: ate of Application, 16th Feb., 1891-Accepted, 4th Apr., 1891
COMPLETE SPECIFICATION.
Improvements in the Method of and Machinery or Apparatus for
Cleaning Coal, Coke, Metal Ores, Pulps, and such like Materials.
I, SAMUEL BARBER, of 8, John Street, Adelphi, in the County of London,
Engineer, 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 has reference to improvements in the method of, and in apparatus
or machinery, for conducting the operations necessary for and incident to the
washing or washing and cleaning and drying of coal, coke, metal ores, pulps and
such like materials as hereafter described and explained with reference to the
accompanying drawings.
These improvements make the cleaning of such materials more certain, continuous
and economical than heretofore.
In order that my said invention and the manner of performing or carrying
the same into effect and the apparatus necessary for such operations may be
properly understood I have hereunto appended sheets of drawings in which the
same reference letters and figures are used to indicate corresponding parts in the
figures there shown.
Figure 1 is a longitudinal section showing an arrangement of machinery constructed
according to my invention for treating such materials subsequent to their delivery
from mills, stamps, disintegrators, pulpers, where such reducing processes are
necessary, Figure 2 is a sectional end elevation of same, and Figures 3 and 4 shew
in vertical longitudinal and transverse sections a representative construction of
rotary screen as hereafter described.
A is a tank or hopper into which the finely reduced substances to be treated are
received and from which such materials are conveyed by worm or other regular
feed into cylindrical screen B suitable in diameter and length to the materials to be
treated.
The screen B is driven from either or both ends by means of toothed or friction
gearing acting upon the drum heads or bands the said screen B best seen at
Figures 3 and 4 being supported and held in position by anti-friction rollers 1,³
Figures 2, 3 and 4 placed beneath and on each side of the bands and main
division bands . The material to be treated is carried forwards by means of an
inside circumferential continuous worm 63 Figure 3. Upon the shaft S as it passes
through the screen B there are fitted beaters or arms S' Figure 2 or arms carrying
beaters S Figures 3 and 4 which travel parallel to the sides of the screen and may
be slightly helically twisted and are at a suitable distance from the screen, and
travelling either in the same or in a contrary direction to the screen with greater
or less speed and for the regulation of such speed the shaft is or may be driven by
and fitted with cone pulleys. If necessary the shaft S can be carried through the
shaft or hub of the feed worm a Figures 1 and 3.
The screen B is divided into sections and each section is covered with gauze as
shown at Figure 1 suitable to the materials and fineness of grain or pulp required.
The first section being the finest and the substance passing through this is for direct
treatment by washing by means of the hereinafter described process. This section
forms the major portion of the screen as shown above a worm & Figures 1 and 3,
and the remaining sections 66, 67, 68, or such numbers of sections graduated as found
necessary to the materials to be treated, divide the remainder of the materials into
sizes suitable for washing or cleaning by vacuum, electrolysis, or re-grinding and

page_text: returning to the screen B or to use as gravel for concreting, where gravel or marl
grinding is required.
The material for direct treatment is delivered by the worm Figure 1 into a
hopper or receiver C having at its base or other convenient position a slide or
shutter C, Figure 1, for use when charging the hopper, and raising the washer to
the required heat suitable to the material treated. Immediately beneath the
shutter C there is a graduating archimedian screw C Figure 1 or water stopper
tank with revolving drum or other suitable mechanical means to maintain pressure
and at same time feed the material into the washer D, which is of suitable length
and diameter to the material and quantity to be treated. This washer Dis
cylindrical and conical at one end as shown. The conical end d Figure 1 enables
a body of the material and water (hot or otherwise) to be maintained. The
material treated is disturbed and passed forward by the bevelled and helical
arms & Figure 1. The water (hot or otherwise) or acid or other liquid is supplied
by the valves and injectors d³ Figure 1 or at other suitable position at the feed end
and the temperature is raised to the necessary degree by steam superheated or
otherwise admitted through pipes & nozzles & Figure 1. At the conical end d'
Figure 1 a solid archimedian screw d of one or more turns delivers the material
treated into a perforated straining trough or drum E Figure 1, formed if required
with double case having a packing of horse hair, felt or other suitable textile or
filtering matter between such case. The material is fed forward by screw or revolving
arms e and delivered into the upright pug or press F which is similarly formed to
the drum or trough E and substantially as shown. The material is alternately
squeezed downwards and broken up by the revolving arms f' Figure 1 which are
suitably bevelled and plain and of helical form as required.
The compressive extraction of surplus moisture is further accelerated by means
of steam jet or jets f Figure 1, superheated or otherwise, according to the dryness
and solidity required. The base of this pug F delivers into a worm chamber G
which is also perforated immediately beneath the pug F and for such distance
as required according to material treated. The worm G¹ is of cylindrical or
graduating archimedian form as required.
The trough E, the pug or press F, and the chamber G are encased in a receiving
tank H as shown.
The materials are by this means cleaned and delivered and in a condition of
dryness as required for subsequent treatment.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
First. The method of cleaning coal, coke, metal ores, pulps, and such like
materials by feeding same by feeding device to gauze covered sorting screen and
thence delivering material of proper size to a carrying screw and thence by feeding
device to a washer and strainer and finally subjecting the material to pressure in a
pug or press for effecting the compressive extraction of the surplus moisture all
substantially as and for the purposes set forth.
Second. In machinery or apparatus for cleaning coal, coke, metal, ores, pulps,
and such like materials the gauze covered screen B driven by gearing in combina-
tion with the independently driven benter carrying shaft S, and screw bª feeding
device A a and carrying screws as set forth.
Third. In machinery or apparatus for cleaning coal, coke, metal ores, pulps and
such like materials the feeding device C C¹ and archimedian screw C2 the conical
ended washer D with arms d, and steam or vapour nozzle and screw d
perforated straining trough E, and upright pug or press F substantially as and for
the purposes set forth.
Fourth. In machinery or apparatus for cleaning coal, coke, metal ores, pulps
and such like materials, the gauze covered screen B driven by friction or other

page_text: gearing, in combination with the independently driven beater-carrying shaft S and
screw 6 feeding device A a and carrying screws the feeding device C C¹ and
archimedian screw C the conical ended washer D with arms d2 and screw d*
perforated straining trough E and upright pug or press F all substantially as and
5 for the purposes set forth.
Deted his 10th J
1001