Improvements in Machinery or Apparatus for Washing and Dressing Ores and other Substances of Different Specific Gravities.
Year: 1898

page_text: Improvements in Machinery or Apparatus for Washing and Dressing
Ores and other Substances of Different Specific Gravities.
GEORGE FREDERICK WYNNE, of Plas Gwyn, Minera, near Wrexham, Mechanical
Engineer, and JOHN SIBLEY BORLASE, of Penygelli Hall, near Wrexham, Foreman
Ore Dresser, do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in machinery or apparatus for washing
and dressing ores and other substances of different specific gravities.
Our improvements mainly consist in the method of construction of the ordinary
revolving table used for the washing of slime or very fine ores and in the method
of washing off the products from the table. In our improved apparatus we pre-
ferably construct the circular table in two parts, the outer part being concentric
with the inner circular table but at a lower level of some six or eight inches. In
this space we place a circular launder to catch the different products from the
top inner table, from which launder they can be distributed on to the bottom
table or run away through suitable openings to any convenient receptacle. A
circular launder is also placed around the periphery of the bottom portion of the
table.
Our improved method of washing off the products consists in the provision on
both the top and bottom tables of any required number of curved pipes which are
placed in such a position that they proceed with a gradual taper from the outer
to the inner periphery of both sections of the table. Along the whole length of
these pipes are small perforations through which water is conveyed in such a
manner that it impinges upon the surface of the table for the whole length of the
pipe.
As these pipes are stationary and as the table slowly revolves any products
which are left upon the table after the slime water has been run over its surface
are brought up against these jets of water and as the heavier products keep up
close to the jets they follow the curve of the pipe until they get to the point
where it intersects the bottom edge of the table, where they are deposited by them-
selves in that particular portion of the circular launder into which they drop and
from whence they may be conveyed to any suitable receptacle.
The waste and other lighter products are washed into the launder earlier in the
revolution of the table.
The table instead of being constructed in two parts as described may be made
in 3 or more concentric sections, the products being run in and washed off in the
manner hereinbefore described..

page_text: Improvements in Machinery or Apparatus for Washing and Dressing
Ores and other Substances of Different Specific Gravities.
GEORGE FREDERICK WYNNE, of Plasgwyn, Minera, near Wrexham, Mechanical
Engineer, and JOHN SIBLEY BORLASE, of Penygelli Hall, near Wrexham, Foreman
Ore Dresser, 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 improvements in machinery or apparatus for washing
and dressing ores and other substance of different specific gravities.
Our improvement mainly consist in the method of construction of the ordinary
revolving table used for the washing of slime or very fine ores and in the method
of washing off the products from the table. In our improved method of con-
struction the circular table may be made in two parts A & B the outer part A
being concentric with the inner circular table B but at a lower level of some
6 or 8 inches. In this space we place a circular launder C to catch the different
products from the top table from which launder they can be distributed on to
the bottom table or run away through some suitable openings to any convenient
receptacle.
A circular launder D is also placed around the periphery of the bottom portion
of the table.
Our improved method of washing off the products consists in the provision on
both the top & bottom tables of any required number of pipes E, F, G, H, I, J
which are placed in such a position that they proceed with a gradual taper from
the outer to the inner periphery of both sections of the table. Along the whole
length of these pipes are small perforations through which water is conveyed in
such a manner that it impinges upon the surface of the table for the whole length of
the pipe.
As these pipes are stationary and as the table slowly revolves, any products
which are left upon the table after the slime water has been run over its surface
are brought up against these jets of water and as the heavier products keep up
close to the jets they follow the length of the pipe until they get to the point
where it intersects the bottom edge of the table where they are deposited by them-
selves in their particular portion of the circular launder into which they drop
and from whence they may be conveyed to any suitable receptacle.
The waste and other lighter products are washed into the launder earlier in the
revolution of the table.
Having now particularly described and ascertained the nature of our said in-
vention and in what manner the same is to be performed we declare that what
we claim is:-
1. The construction and arrangement of a circular revolving slime washing
table consisting of two parts the upper part A first receiving and dealing with
the slimes the products from this first washing passing on to the outer & lower
table for the finishing process.
2. The construction and arrangement of a circular revolving slime washing
table in combination with a series of washing off pipes running from the outer
circumference to the inner circumference of the table in such a manner that the

page_text: ore stuff to be washed can be run on and washed off at a number of points on the
periphery of the table instead of at only one point in the revolution as in the
methods hitherto employed.
Dad
1
1.1
1000
GEORGE FREDERICK WYNNE,
JOHN SIBLEY BORLASE.