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Патент USA US2115314

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April 26, 1938.
2,115,314
w. F. J. McERLEAN
ORE MILL
Filed Sept. 5, 1936 '
2 Sheets-Sheet 1
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i‘NVENTOR
W.F.J'. McErleon.
BY»
ATTORNEY
I
April 26, 1938.
2,115,314
w. F. J. McERLEAN
ORE MILL
2 Shee’rls-Sheet 2
Filed Sept. 3, 1936
V
my my m/W/w
'
INVENTOF?
W.F'.J.McEr‘|eon.
BY
ATTORNEY’
Patented Apr. 26, 1938
2,115,314 .
PATENT OFFICE
UNITED STATES
2,115,314
I
ORE MILL
Wallace Ferguson James McErlean, Vancouver,
British Columbia, Canada
Application September 3, 1936, Serial No. 99,293
(Cl. 83-45)
4 Claims.
This invention relates to an improved mill for
separating and amalgamating ore.
‘
An object of the present invention is the provi
sion of an ore mill in which the ore is crushed
5 and ground to separate the mineral which, in
turn, is removed therefrom by amalgamation.
Another object is the provision of an ore mill
adapted to grind the ore into a ?ne powder to.
ensure substantially complete separation of the
10
15
mineral.
‘
The ore mill 0‘ comprises an open-ended re
ceptacle l0 having a bottom II with a central
ori?ce l2. A collar l3 surrounding the ori?ce l2,
extends upwardly into the interior of the recep~
tacle l0 and a race l4 encircling said collar, lies 5
between the latter and the side of the receptacle.
The race i4 is formed with a trough l5 adja
cent to and extending around the collar I3, said
trough having therein a quantity of mercury.
A plurality of spaced-apart frustums l6 taper- 10
Another object is the provision of an ore mill
in which friction is reduced to a minimum thus
ing inwardly, are adapted to rotate in the race
l4 and each have at their inner and outer ends
increasing the life of the grinding elements and
decreasing the amount of power necessary for
are held in their spaced-apart positions by a cage
operation.
A further object is the provision of an ore mill
which may be readily adjusted to handle ores
of‘diiferent qualities.
A further object is the provision of an ore mill
of very simple construction and which will oper
ate continuously with substantially 100% chi
ciency in spite of the natural wearing of parts.
A still further object is the provision of a
device of the character described of strong, dur
25 able construction and which may be very easily
2
spindles I1 and I8 respectively. The frustums l6
consisting of a pair of concentric bands 19 and 20 15
held together by rods 2i lying between the frus
tums. These bands I9 and 20 have a number of
recesses 22 and 23 opening out into the lower edge
thereof and into which the spindles l1 and I8
extend. The upper portions of the recesses rest 20
on the spindles so that the bands rotate around
the collar l3 with the frustums and ride clear of
the race M.
A U-shaped member 24 having a central bear
ing 25 and a supporting member 26 having a 25
central bearing 21 are both secured by bolts 28
manufactured.
'
The present invention consists essentially of an to a ?ange 29 extending around the upper end
ore mill comprising a receptacle having therein a of the receptacle III. A ?oating shaft 30 is jour
plurality of- spaced-apart frustums and means ' nailed in the bearings 25 and 21 and extends
for rotating said frustums and at the same time downwardly into the collar l3. A pulley 3| is 30
30
applying pressure thereto to grind the crushed keyed to the shaft 30 between the bearings 25
and 21 and a disk 32 is ?xedly mounted on said
ore which is supplied to the receptacle. The min
eral separated from the ore by this operation is shaft above the upper end of the collar l3. The
disk 32 comprises a hub 33, spokes 34 and a rim
gradually worked into a trough where it amal
35 upon the upper surface of which are formed 35
gamates
with
mercury
while
the
tailings
are
35
radiating ribs 36. The rim 35 is substantially
?oated out of the container in a suitable manner
V-shaped in cross section with its lower surface
as more fully described in the following speci?
31 faced with a removable layer of rubber 38 and
cation and illustrated in the accompanying draw
lying in, the same plane as the upper surfaces of
ings, in which
the frustums Hi. This rim is pressed against the - 40
Fig.
1
is
a
vertical
section
through
the
ore
mill,
40
frustums
by a number of weights 39 formed of a
Fig. 2 is a plan view of the mill with certain
suitable heavy metal such as lead resting on the
parts broken away,
»
Fig. 3 is an elevational view of the assembled ribs 36. With this construction the rubber layer
38 ensures a positive frictional drive between the
frustums removed from the mill,
rim 35 and the frustums l6 and the weights 39 45
Fig.
4
is
a
plan
view
of
the
frustums
as
shown
45
in‘ Fig. 3,
I
Fig. 5 is a fragmentary view of an alternative
form of the invention, and
'
Fig. 6 is an elevation of the mill and the appa
50 ratus for supplying crushed ore thereto.
Referring more particularly to the drawings, A
is an ore crusher and B is a chute for conveying
the crushed ore to the ore mill C, the crusher A
and the mill C being driven by a suitable source
of power (not shown).
provide the desired pressure for the grinding
operation. Water is supplied to the receptacle l0
through a pipe 40.
'
In use, the ore is primarily, crushed in the
crusher A and then passes along the chute B 50
to the mill C. The crushed ore enters the mill
through the open end of the receptacle l0 and
gradually works its way beneath the frustums l6
which are rotated by the power applied to the
shaft 30 through the pulley 3| and suitable driv- 55.
2,110,314
ing means. The shaft 30 rotates the disk 32
which in turn rotates the frustums l6 through
the frictional contact of the rim 35 and the layer
of rubber 38 with the latter. As the frustums
rotate they revolve about the collar I3 and grind
the ore against the race, I4.
10 mercury. At the same time water is supplied to
the container through the pipe 40 and the tail
ings ground ?ne enough to ?oat, are ?oated over
the collar l3 out of the mill. The flow of water
to the receptacle is regulated so that it ?ows at
15' any desired rate over the top of the collar. In
order to prevent the ?oating tailings from being
trapped between the outer ends of the frustums
and the wall of the receptacle, the weights 3! are
mounted on the ribs 36 to allow the water to flow
20 therebeneath to the outlet.
The number of weights may be varied to suit
the ore being handled and the layer of rubber 38,
when it becomes worn out, may be easily changed.
As the frustums wear away, the disk 32 auto
26 matically lowers itself to compensate for'this
wear and the mill thus operates continuously at
substantially 100% ei?ciency throughout the life
time of ,its various parts. This. wearing of the
frustums is greatly reduced by reducing the con
30 tacting of metal against metal. The rubber 38
provides a frictional drive without the contacting
of metal against metal and the frustums are sepa
rated from each other by the bands I! and .20.
If desired, a layer of ‘rubber H (see Fig. 5) may be
placed over the surface of the race It.
This sec
ond layer of rubber which may be easily changed
from time to time, separates the frustums from
the race thus further reducing wear.
The ore is very; finely ground in the present ore
mill by the relatively large surfaces of the frus
tums extending across the full width of the race
ll. ‘This ore remains in the device and is ground
> and reground until it is ?ne enough to ?oat thus
ensuring practically all the mineral being re
moved therefrom, and since the latter cannot
?oat, it remains in the container until it ?nally
reaches the mercury in the trough.
This ore mill is so complete and compact that
it may be carried from place to place to extract
minerals from ores in places where, up to the
present time, it has been impractical to operate
owing to the high cost of the‘ known types of ma
chinery and the high .cost of transportation.
There are many small properties containing val
uable minerals which have not been touched be
cause of the high cost of production with the pres
ent machinery.
1. An ore mill comprising a receptacle, a plu
rality of frustums rotatably mounted in the re
ceptacle, supporting members mounted on said
receptacle and having bearings centrally thereof,
The ground ore is‘ ,
gradually worked to the trough l5 owing to the
fact that the frustums taper inwardly and the
mineral contained therein amalgamates with the
40
What I claim as my invention is:
‘
From the above it will readily be seen that a
portable oremill has been provided which will
extract practically all the mineral from the ore,
in which the wearing of parts has been reduced
a?oating shaft journalled in said bearings, means
for rotating the shaft, a disk ?xedly mounted on
said shaft having a rim with its lower surface
faced with rubber, radial ribs formed on the up
per surface of the rim, at least one weight mount
ed on said ribs adapted to press the rim into
frictional contact with the frustums and to ap—
ply pressure thereon to grind ore supplied to the
receptacle, means for extracting the mineral
from the ore and means for removing the tail
‘ings from the receptacle.
15
2. An ore mill comprising a receptacle, a race
mounted in said receptacle having its surface
covered with a layer of rubber, a plurality of
frustums rotatably mounted in the race, a ?oat 20
ing shaft mounted centrally of the receptacle,
means for rotating the shaft, a disk ?xedly
mounted on said shaft having a rim with its
lower surface faced with rubber, radial ribs
formed on the upper surface of the rim, at least
one. weight mounted on said ribs adapted to press
the rim into frictional contact with the frustums
and to apply pressure thereon to grind ore sup
plied to the receptacle, a trough in said receptacle
containing mercury, said mercury being adapted 30
to extract the mineral from the ground ore by
amalgamation, and means for removing the tail
ings from the receptacle.
3. An ore mill comprising a receptacle with a
bottom having a central ori?ce therein, a collar
surrounding vsaid ori?ce and extending upwardly
into the receptacle, a race encircling the collar,
a plurality of spaced-apart frustums rotatably
mounted in said race, a ?oating shaft mounted
centrally of the receptacle, means for rotating the 40
shaft, a disk ?xedly mounted on the shaft above
the collar, said disk having a rim with its lower
surface faced with rubber, radial ribs formed on
the upper surface of the rim, atleast one weight
mounted on said ribs adapted to press the rim
into frictional contact with the frustums and to
apply pressure thereon to grind ore supplied to
the receptacle, means for extracting the mineral
from the ore and means for supplying water to
the receptacle to ?oat the tailings. over the top 50
of the collar\ out of the receptacle.
.
4. An ore mill comprising a receptacle with a
bottom having an ori?ce therein, a collar sur
rounding said ori?ce and extending upwardly into
the receptacle, a race surrounding the collar, a ;
plurality of frustums situated adjacent to and
spaced from each other rotatably mounted in
the race, said race having a trough adjacent to
the inner ends of the frustums, a ?oating shaft
mounted centrally of the receptacle, means for
rotating the shaft, a disk mounted on said shaft
to a minimum and which will operate continu- > having a rim with its lower face lying in the plane
ously with substantially 100% e?iciency in spite of the upper surfaces of the frustums, a weight
of the natural wear of parts.
mounted on the rim adapted to press said rim
,Various modi?cations may be made in this in
into frictional contact with the frustums and to
vention without departing from the spirit thereof apply pressure thereon to grind ore supplied to
or the scope of the claims, and therefore the exact the receptacle, means in the trough for extracting
forms shown are to be taken as illustrative only the mineral from the ore by amalgamation, and
and not in a limiting sense, and it is desired that means for supplying water to the receptacle to
only such limitation shall be placed thereon as ?oat the tailings over the top of the collar out of
70
are disclosed in the prior art or are set forth in the receptacle.
‘
the accompanying claims.
WALLACE FERGUSON JAMES McERLEAN.
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