A New or Improved Machine for Washing and Soreening and Dividing Gravel and such like Material.
Year: 1894

page_text: Date of Application, 2nd Oct., 1894
Complete Specification Left, 6th Dec., 1894-Accepted, 12th Jan., 1895.
PROVISIONAL SPECIFICATION.
A New or Improved Machine for Washing and Soreening and
Dividing Gravel and such like Material.
I, WILLIAM COOPER, of Rathland House, Kimmage, County Dublin, Ireland,
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention has for its object the production of suitable machinery for the
purpose of washing, and screening, and dividing gravel, and such like material, in a
convenient, economical, and efficient inanner.
In carrying out my said invention, I propose to construct a tapered chamber or
barrel of suitable dimensions, and of suitable material, either cylindrical, polygonal,
or other convenient shape in section. This chamber or barrel is provided with ends
in which are formed concentric openings, and is mounted longitudinally on a
horizontal shaft rotating in suitable bearings at either end.
The concentric openings are so arranged as to allow a certain depth of water to
remain constantly in the chamber or barrel, and are different in size, the one at
small end being tho largest in diameter so as to allow the soiled water to flow out
at this end of the machine. A suitable hopper is arranged at the small end of the
chamber or barrel for charging the machine with the gravel, or other like material
to be treated, and at the other or large end two or more perforated buckets are
attached to the shell for the purpose of lifting the washed material, and
discharging same into a hopper held in position at the concentric opening by a
suitable casting resting on the shaft which runs loosely through it (the casting).
The said casting is pierced by a passage for the water supply, and is provided
with a nozzle which directs the water into the aforesaid perforated buckets, thus
imparting to the material a final washing or rinsing after it has left the water
carried in the chamber or barrel.
To the large end of the chamber or barrel are secured three or more
concentrically arranged screens of different meshes, the inner or first screen being
the coarsest, and into this the washed material is injected from the aforesaid
hopper.
Having thus described the construction of my improved machine for washing
and screening gravel, and such like material, its action may be briefly described as
follows:-
The material to be treated having been fed into the hopper at the small end of
the chamber or barrel, travels by gravitation towards the large end, and in its
passage, should it be so desired, it may be impeded or assisted by blades or
propellers attached to the shell. On arriving at the large end of the chamber or
barrel, the material is caught up by the perforated buckets, and discharged into the
second described hopper whence it is precipitated into the first or inner concentric
screen, thence some portion falls through, to the second or finer concentric screen,
and thence a portion to the third or still finer concentric screen, and so on
ad libitum, as it may be found' necessary to divide the material; while meantime
the material too large to pass through each screen is delivered through a separate
outlet, and thus by this arrangement gravel or other like material is readily
divided into different qualities of fineness on its rejection from the machine..
Dinted the 20th day of Santamber 1904
J. K. FAHIE & SON,
9, Westland Row, Dublin,. Agents for Applicant.

page_text: .
A New 'or Improved Machine for Washing and Soreening and.
Dividing Gravel and such like Material.
I, WILLIAM COOPER, of Rathland House, Kimmage, County Dublin, Ireland,
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 :-
.
This invention has for its object the production of suitable machinery for the
purpose of washing, and screening, and dividing gravel, and such like material in a
convenient, economical and efficient manner.
And in order that my said invention, and the manner of carrying the same into
practice may be properly understood, I hereunto append a sheet of explanatory
drawings, shewing my improved apparatus, which I will now proceed to describe.
Fig. 1, is a longitudinal section of the complete apparatus.
Fig. 2, a view of the small end ;
Fig. 3, a view of the large end; and
Figs. 4 and 5 detailed views (enlarged) hereinafter more fully described.
A, represents a tapered chamber or barrel, which may be either cylindrical,
polygonal, or other suitable shape in section, and of any convenient dimensions
according to requirements.
This chamber or barrel is mounted by means of arms a, on the horizontal
shaft B, rotating in suitable bearings, fixed in any convenient framework.
C, aud C, are concentric openings, the former being larger in diameter than the
latter to allow the soiled water to flow out at this end as indicated by the arrow.
D, is a hopper arranged at the small end for the purpose of charging the maobine
with gravel or other material to be treated.
E, is a detachable shoot over which rotates the flange 6, whereby the soiled
water passes from the machine.
At the large end of the chamber are arranged four perforated buckets F, partly
attached to the shell, and the end; and along the sides of the shell are fixed at
suitable intervals, and at a suitable angle, blades G, whose number and dimensions
may be adjusted according as it may be found convenient, or desirable to impede or
assist the material in its passage through the chamber. H, is a forked hopper
(Fig. 4) resting on a casting I through which the shaft runs loosely This casting
contains a passage K, as indicated by the arrows (Figs. 4 and 5) through which
the water is supplied to the chamber, and is provided with a nozzle K, which
directs the water into the perforated buckets, thus imparting to the material a final
rinsing before it is ejected from the chamber into the concentrically arranged
screens 1, 2 and 3, which are secured by angle irons to the end of the chamber, and
rotate with it.-
Each screen is of varying mesh, and is provided with an independent outlet 4, 5
and 6 for the rejection of the material too large to pass through.
Having thus described the construction of my improved machine, its action may
be briefly described as follows:-
"
The gravel or other material having been fed into the hopper D, at the small
end of the chamber travels by gravitation towards the large end, and in its passage
is impeded (if necessary) by the blades G, so as to ensure the more thorough
washing.
On arriving at the large end of the chamber, the material is raised by the
buckets F, and discharged into the hopper. H, whence it is precipitated into the
first concentric.screen, thence some portion falls through to the second or finer
screen 2, and thence a portion to screen, while meantime the material too large
G

page_text: to pass through each screen is ejected through the respective outlets 4, 5 and 6, and
thus the material is readily and accurately divided into different qualities of fineness
as may be required.
It is obvious that any number of these concentric screens may be arranged, and
also that the mesh of each may be adjusted according to the size or fineness of
material desired to be produced:
It is also obvious that my improved machinery, although described in connection
with "gravel and such like material," may be utilized with advantage and economy
for the purpose of washing, screening, and dividing all material requiring such
treatment.
Any suitable means may be employed for the purpose of driving the apparatus.
L, Fig. 1-shews a crown wheel encircling the chamber, with which pinion
gear may engage, and thus impart motion to the apparatus.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I would have it understood
that what I claim is:-
First. In machinery for washing, screening, and dividing gravel, or other
material requiring such treatment, the use and application of a tapered chamber A,
provided with concentric openings Cand C, and rotating on horizontal shaft B, in
combination with buckets F, the hoppers D, and H, and the casting 1, all
constructed, arranged, and operating in the manner and for the purpose
substantially as herein specified.
•
Second. In machinery for washing, screening, and dividing gravel, or other
material requiring such treatment, the use and application of apparatus, as claimed
in the first claim, in combination with the concentric screens 1. 2 and 3, constructed,
arranged, and operating in the manner, and for the purpose substantially as herein
specified and set forth.
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