Improvements in Electro Magnetic Separators for Extracting Metal from Slag and the like.
Year: 1890

page_text: Date of Application, 26th July, 1890
Complete Specification Left, 27th Apr., 1891-Accepted, 6th June, 1891
PROVISIONAL SPECIFICATION.
Improvements in Electro Magnetic Separators for Extracting Metal
from Slag and the like.
We, PHILIP UNWIN ASKHAM, of the Yorkshire Steel and Engineering
Works, Sheffield, in the County of York, Engineer, and WILLIAM WILSON, of
the same place, Engineer, do hereby declare the nature of this invention to be as
follows:-
The object of this invention is the construction of a machine by the combination
of certain parts in such a manner that, a large surface of exposure is obtained in
a machine occupying little space, for bringing or subjecting the slag or other
material under operation, to the action of the electro magnets with which the
apparatus is furnished, for extracting from the said material any metallic
substances, and to so arrange the apparatus that, the material extracted is
automatically removed from the magnets and conveyed into a separate
receptacle.
We accomplish our object in the following manner-We mount a cylinder open
at each end in a suitable manner, to which rotary motion is imparted, and within
the cylinder is secured a trough somewhat longer than the cylinder and in which
rotates a worm also longer than the cylinder, the circumference of which is fitted
with a number of electro magnets.
The sing or other material is fed to one end of the cylinder by a hopper or other
means, and on the cylinder rotating, the material is brought into contact with
the before mentioned magnets secured to the circumference of the cylinder during
a portion of each revolution of the same and at the time when they are in circuit,
by which any metallic material is extracted from the slag or the like during its
passage through the cylinder.
When each series of magnets arrive at a certain position in the revolution the
electric contact with such series is broken, thereby allowing the magnets to release
the extracted metal, which falls into the before mentioned trough, and in order to
remove any small pieces that may adhere to the magnets, the latter are arranged
so as to pass through notches somewhat narrower than the magnets and formed of
india rubber or other flexible material, which strip the small pieces into the
trough from which they are removed by the rotating worm into a suitable
receptacle.
On the magnets passing through the notches, they may enter a chamber formed
in the cylinder and be subjected to a strong current of air for blowing away any
oxide or very light particles from the magnets, which are again in magnetic
connection or circuit immediately they leave the said chamber, when the operation
is again repeated with each series of magnets secured to the circumference of the
rotating cylinder.
Dated this 24th dox of July 1890.
JOHN WAUGH,
Agent.

page_text: COME DIN DIPERATION.
Improvements in Electro Magnetic Separators for Extracting Metal
from Slag and the like.
We, PHILIP UNWIN ASKHAM, of the Yorkshire Steel and Engineering
Works, Sheffield, in the County of York, Engineer, and WILLIAM WILSON OF
the same place, 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:-
The object of this invention is the construction of a machine by combining
certain parts in such a manner that, a large surface of exposure is obtained in a
machine occupying little space for bringing or subjecting the slag or other material
under operation to the action of electro magnets with which the apparatus is
furnished for extracting from the said material any metallic substances; and to so
arrange the apparatus that, the material extracted is automatically removed from
the magnets and conveyed into a separate receptacle.
In the accompanying drawings
Fig. 1 represents an elevation of our apparatus partly in section.
Fig. 2 is an end view of the same also partly in section, and
Fig. 3 a detail of a commutator.
We form the cylinder A. of wool or other suitable non magnetic material open
at each end and inclined towards the outlet end. The cylinder is supported at one
end by the hollow arms B attached to hollow shaft C carried by bracket_and
journal D. The opposite end of the cylinder is carried by the small pullies E. E.
which may be regulated in height for giving to the cylinder A the desired
inclination for retarding or accelerating the passage of the material through the
cylinder to the outlet spout N.
Within the cylinder is secured a trough E, the inner end resting upon the stud
pin Fattached to the boss of hollow arms B. and the other end outside the cylinder
may be supported in any manner so that the trough is firmly secured in the
required position. In the trough is a rotating worm & driven by pulley H. and is
provided with a spout J for allowing the material deposited therein in the manner
hereinafter described and propelled by the worm G to leave the trough.
The cylinder A is rotated by driving pulley P through worm W and worm
wheel W, and around the circumference of the said cylinder are secured at
intervals magnets K. the cores of which come flush with the inside of the said
cylinder and through which on each revolution of the said cylinder a current is
sent and maintained during a portion of the revolution.
The slag or other material M is deposited in the interior of the cylinder A at
one end by means of spout L. and by the cylinder rotating and inclining towards
the spout N. the material is constantly turning over and travelling towards the
said spout for removal into any suitable receptacle.
By the material M constantly changing its position in the manner described, it is
brought into contact with each series of magnets K as they revolve along with the
cylinder through each series of which a current is passing when the magnets are
about the position X indicated on one side to X on the other side, during which
time the magnets extract any metallic substance that may be in the slag or other
material passing through the cylinder, and when each series of magnets K arrive
in the position over the trough E. the current is then broken, thus allowing any
metallic substance to be released and fall into the trough from which it is removed
by the rotating worm G propelling the same along the trough to the spout J; thus
by these means the slag or other material is cleared of any metallic substance
and automatically deposited in a trough and through spout J into a separate
receptacle.
On the hollow shaft C is secured a commutator Q for charging the magnets, and
is composed of a drum of insulating material upon the circuinference of which are

page_text: fitted a number of metallic strips R of such length equal to the distance the
current is required to pass through the magnets for extracting and retaining the
metallic substances, and as each row or series of magnets arrive at the top over
the trough E the respective strips R by the rotation of the commutator are out of
contact with the brushes S. thus stopping the current passing through the magnets K
at the top of cylinder, thereby releasing therefrom the extracted metallic
substances which are automatically removed in the manner as herein before
described.
The wires T from the metallic strips R on the commutator Q pass through the
hollow shaft C and hollow arms B to the magnets, the return wires passing to the
commutator Q1 in the same direction, the brush S' of which is constantly in
contact with the commutator.
Having now particularly described and ascertained the nature of this inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :
1. A. rotating cylinder A fitted with magnets K in combination with hollow
arms B. and shaft C. commutators Q and Q trough E and rotating worm G all
arranged substantially in the manner as hereinbefore described and illustrated by
the drawings.
2. A rotating cylinder A fitted with magnets K combined with a trough E and
rotating worm G arranged substantially in the manner as shown and described and
for the purpose as hereinbefore set forth.
Dated this 25th day of April 1891.
JOHN WAUGH,
Agent.