provements in Magnetic Ore Separators
Year: 1895

page_text: Date of Application, 30th Apr, 1895-Accepted, 1st June 1895
COMPLETE SPECIFICATION
Improvements in Magnetic Ore Separators
JOHN WENDELI CARIER, of 48 Lexington Avenue, Brooklyn, in the State
of New York, United States of America, Gentleman, do hereby declare the nature
of this invention, and in what manner the same is to be performed, to be particulaily
described and ascertained in and by the following statement
This invention has reference to certain improvements in that class of machines
which are known as magnetic ore-separators in which a number of permanent
magnets are arranged in gangs one below the other and over which the ground ore
1s passed by gravity so that the magnetic particles of ore are separated from the
non magnetic particles in a quick and reliable manne
The invention consists of an one-separator in which series of permanent
mignets is arranged below the supply-hopper in such a manner that the lower
pole-ends are receding below the upper pole-ends, which latter are in the path of
the falling material, that is conducted from the hopper over a magnetic deflecting-
plate that is arranged above and at a short distance back of the upper pole-ends
of the magnets, so that the magnetic ore particles are separated from the non-
mignet particles in the passage over the deflecting-plate and upper pole-ends,
and gradually conducted to the lower pole ends, while the non-magnetic particles
are dropped by givity and collected in a separate receptacle from the magnetic
particles
The invention consists further of certain details of construction which will be
fully described and finally pointed out in the clum
In the accompanying di wings,-
-
Figure 1 represents a side elevation of my improved magnetic ore-separator,
showing the same arranged with the gangs of stationary magnets, one below the
other
Figure 2 is a fiont elevation of the simc,
Figures 3 and 4 are detail vertical sections, drawn on a larger scale, showing
two different arrangements of the stationary magnets, and
Figure 5 is side elevation partly in vertical section of one gang of magnets
and its supply-hoppci drawn on a still larger scale
Similar letter of reference indicate corresponding puts
Referring to the di wings, A represents the frume of my improved ore--eparating
machine on the top of which is ranged a supply-hoppei B into which ground ore
s placed From the supply hopper B the ore passes into a second hopper C that
is arranged vertically below the supply-hopper B The hoppe C is attachea by
mcans of slotted angle-bars d and screws d¹ to the supporting-frame A, the angle-
bars being attached to the side-walls of the hopper and the side-posts of the
frame A, as shown clely in I igures 1 and Below the hopper Care
arranged two serie or rows of permanent magnets D which together form a
gang The magnets De supported in boxe D, of wood or other non-magnetic
material, which are guided in exterior frames D2, that me connected by pivots d²
at their front-ends to the po ts of the supporting-frame
The rear-ends of the
supporting-frames D2 are supported by hanger-rods H, which are provided with
turn-buckles H, and hanger-rods being suspended by means of eyes at their upper
ends from norizontal cross-rods K of the supporting frame A By means of the
turn-buckles the suspending-rods H can be lengthened or shortened, so as to give
to the magnet-holding frames D' and to the rows of permanent magnets in the

page_text: seam, the desired degree of inclination The boxes D' in which the magnets are
located, are connected with the rea-parts of the frames D' by means of screws m,
so that the boxes can be adjusted longitudinally in the frames 1)², said boxes being
guided in ways or other suitable manner on said frames By the adjustment of the
adjustable frames and boxes, one series or row of magnets D can be so arranged
relatively to the other that their pole-ends are arranged in an inclined plane, so that
the upper pole-ends of one row of magnets extend beyond the lower pole-ends
of the same, in other words that the lower pole-ends are located in vertical planes to
the rear of the upper pole-ends, as shown in Figure 3, or the pole ends of the upper
series of magnets may be arranged to project over the pole-ends of the lower
series of magnets so that the latter are located in vertical planes successively to
the rear of those above, as shown in Figure 4
On the top of the upper magnet-holding box D' of each ging of permanent
magnets is arranged an inclined magnetic deflecting-plate E, which is located near
the front-edge of the box and adapted to be adjusted on the same in any approved
manner Below the lower series of magnets of each gang is arranged chute F,
the upper edge of which is vertically below the edge of the upper pole ends of
the upper row of magnets, so that the magnetic ore-part cles that are dropped
from the pole-ends are collected and conducted over a second chute F to a suitable
collecting receptacle At the inside of the inclined front-wall of the hopper is
arranged a deflecting-plate e which is retained by a headed pin e' at its upper end and
adapted to be adjusted by means of a set-screw e, that passes through the inclined
fiont-wall of the hopper C, so that the inclination of the deflecting-plate can be
adjusted and thereby the stream of ground ore thrown from the hopper to a
greater or less distance according to the relative position of the deflecting-plate E
from the upper pole-ends of the magnets The puts o far described constitute
one gang, and are repeated in each gang, of which a plurality may be arranged
one below the other, all being supported by the fi ime A, as shown clearly in
Figures 1 and 2
The operation of my magnetic or e-supuntor is as follows
The ground ore to be separated is conducted from the supply-hopper B into the
uppermost hopper and from the same onto the deflecting-plate E, which is of
ningnetic material and to some extent under the magnetic influence of the upper
series of magnets From the deflecting-plate F the ground ore passes over the
edge of the supporting box D¹ onto the upper pole-ends of the upper series of
magnets While the mass of ground ore passes over the deflecting-plate L, the
magnetic ore-particles are brought within the influence of the magnets and are
lightly retarded in then motion, while the non-mig utic particle continue in their
motion The influence of the pole-ends on the magnetic particles and con equently
the retardation of the latter increases as they approach the upper pole-n 1 of the
upper series of magnets, while the non-magnetic particle, bung not subject to
in ignetic attraction are thrown forward with considerable velocity, so as to fill
beyond the chute and drop into the hopper or the second gang of magnets
The magnetic ore particles accumulate on the upper-pole ends of the upper scri
of magnets pass gradually from the same to the lower pole-ends of the upp r
series and from the same to the upper pole-cnds of the lower scries of magnets
and then to the lower pole ends of the same The magnetic particles accumul it
gradually to such an extent as to form a continuous web or fleece-like body, which
gradually permits the outmost particles to become loose and move down by
friction over the web or fleece until they are dropped on the chute and passed
over the same into the collecting receptacle The particles taken up by the
hopper C contain still a small quantity of magnetic particles, they are passed
successively in the same manner over the pole-ends of the lower gang until the
entire separation of the magnetic particles from the non-magnetic is accomplished
In Figures 3 and 4 the motion of the magnetic ore-particles from pole-end to
pole-end is represented, the magnetic oie-particles being attracted around the
pole-ends until a sufficient quantity is accumulated and the magnetic influence of

page_text: the pole-end overcome so that they slide downwards towards the next lower pole-
end where they again accumulate filling up the space between the pole-ends anl
passing on to the next pole-ends, and so on, until they are dropped onto the chute
and conducted off The action of the pole-ends of the magnets of the lower gang
on the magnetic particles that are delivered by the hopper of the second, third, etc
gang, is the same as in the first gang, all the magnets being provided with an
armature or keeper, so to speak, of accumulated magnetic ore-particles whereby
the strength of the magnets is retained and the very effective separation of the ore
from the gangue produced without any change in the trajectory of the filling
material which continues to drop by gravity
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
1 The combination, with a supply-hopper of a series of permanent in ignets,
the pole-ends of which are located below the hopper, and an adjustable deflecting-
plate located above and at a short distance back of the pole-ends of said magnets
and in the path of the falling material, substantially as set forth
2 In a magnetic oie-sepirator, the combination of a supply-hopper, a series of
magnets having the extreme attractive or active surfaces of their uppermost poles
directly in the path of discharge of the ore-particles and the attractive or active
surfaces of the poles beneath out of said path but directly in the path of that
portion of the magnetic material that has been separated by said uppermost
poles, and an inclined magnetic deflecting-plate located below the mouth of the
hopper and arranged above but out of contact with the attractive or active
surfaces of said uppermost poles, substantially as set forth
3 In a magnetic ore-separator, the combination of a supply-hopper for the one-
particles, two series of magnets placed one beneath the other and having the
extreme attractive or active surfaces of the poles of the upper series of magnets
directly in the path of discharge of the ore-particles from the supply-hopper so
as to be in direct contact with the ore-particles to be treated, and having the
attractive or active surfaces of the poles of the lower series of magnets at some
distance back from and out of the path of the orc-particles to be separated, but
directly in the path of and in direct contact with that portion of the magnetic
material that has been separated by the poles of the upper series, and an inclined
magnetic deflecting-plate located below the mouth of the hopper and arranged
above and out of contact with the poles of the upper series of magnets, substantially
as set forth
4 In a magnetic-ore separator, the combination, with a supply-hopper, of a
series of permanent magnets located below the hopper, a box for supporting said
magnets, a pivoted frame for guiding said box, means for adjusting the box on said
frame, and means for adjusting the inclination of said frame, substantially as set
forth
Dated this such day of April 1895
For the Applicant,
JG LORRAIN, M Inst EL, M Inst ME,
Chartered Patent Agent