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Патент USA US2122822

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July 5, 1938.
J, F, NOEL
2,122,822
PLACER MINING MACHINE
F'iléd ‘Sept. 28, less
2 Sheets-Sheet 1
Flg-l
6/0/7765 F fVaéL
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July 5, 1938.
4
J. F. NOEL I -
2,122,322
PLACER MINING MACHINE
Filed Sept. 2a, 1936
2 Sheets-Sheet 2
, lfdmes F/Voe?
2,122,822
Patented July 5, 1938
jF'jiuNITEo ‘STATES PATENT OFFICE
James F. Noel, Rawlins, Wyo.
, Application September 28, 1936, Serial No. 103,021
9 Claims.
(Cl. 209-44)
,‘Q'I‘his invention relates to placer machines, and
theprimary purpose of the invention is to meet
the demand fora placer mining machine of simple
construction, employing a minimum number of
especially bearing surfaces, and one that
95 parts,
is rugged, durable, portable and which may be
manufactured at a relatively low cost.
,With the foregoing object outlined and with
other objectsin view which will appear as the
description proceeds, the invention consists in
the novel features hereinafter described in detail,
illustrated in the accompanying drawings, and
more’ particularly pointed out in the appended
claims.
"
In the drawings,
.
1 is, a top plan view of the machine, partly
bfroken'away to facilitate illustration.
" Fig‘. 2 is‘ a side elevation.
Fig. 3 is an end elevation.
" Fig. ‘4 ‘is‘a longitudinal sectional view of the
sluice vbox and screen, taken on the line 4-4 of
Fig. 1.
'
the frame l9, and as best shown in Fig. 5, ri?ies
26 are secured to the bottom of the box. Each
riflie preferably consists of an angle iron exe
tending longitudinally of the box and having its
horizontal wing secured to the bottom of the box. 5
The vertical wings of the angle irons divide the
box into a series of longitudinally arranged paral
lel channels 21, and — each channel‘ contains
undulated means 28 extending lengthwise there
of. Such means preferably consists of strips ill
mounted on the horizontal wings of the angle
irons and having undulated top surfaces. If two
strips are employed in each channel, they can be
arranged with their ridges 29 coinciding as shown
in Figs. 6 and 7, or the ridges of the two strips iii
may alternate as shown at 30 in Figs. 8 and 9,
The undulated strips form a novel system of
inclined surfaces between the ri?ies which, due
to a wedging action, prevent the material from
becoming packed. The angle of the inclined sur- .
faces and the rapidity and amplitude of the mo.
tion are determined by the character of the ma
terial treated, and the undulated strips act to
Fig. 5 is a transverse vertical sectional view of
the ‘same, taken on the line 5-5 of Fig. 1.
‘Fig. 6 is a transverse vertical sectional view of
a detail of the sluice box.
‘Fig. 7 is a longitudinal vertical sectional view of
keep the material in a loose condition, and‘this
allows the heavy material, such as gold, to easily
Work its way to the bottom or to the spaces be-.
tween adjacent angle irons. These spaces are
the same detail.
' "Fig. 8 is a transverse vertical sectional view of
lengthwise of the box. Each tooth of these strips
is preferably made up of vertical surfaces 32 from 30
which inclined surfaces 33 slope downwardly to,
ward the vertical surface of preceding teeth. As
the heavy material enters the notches between
the teeth, and the box reciprocates longitudinally,
the concentrate is raised by the inclined surfaces 35
33 and is then pushed toward the outlet 34 by the
vertical surfaces 32. Thus, a gradual delivery of
concentrate is provided for, and it is unnecessary
a‘detail of a modi?cation.
Fig. 9 is a longitudinal vertical sectional view
of the same.
Referring to the drawings, Ill designates a sta
tionary frame,‘ preferably formed of a pair of
transverse channel irons ll secured to and sup
porting a longitudinal channel iron I2.
< A prime mover l3, such as an internalcombus
tion engine is securely mounted on the frame at
one end thereof. A horizontal transverse shaft I4
is rotatably mounted in bearings l5 arranged on
the medial portion of the frame. Any suitable
means may be employed for driving the shaft
from-‘the engine. For example, a belt l6 driven
by'ia pulley H on the engine shaft may drive a
45 pulley l8 ?xed to the shaft l4.
Another framev I9 is supported on the main
frame by vertically disposed leaf springs 20 which
have. their ends ?xedly connected to the
two frames, and the frame I9 is vibrated by
means of a leaf spring pitman 2| having one of
its ends encircling and driven by an eccentric
‘22 on the shaft M. The other end of the pitman
issecured to the frame 19 by any suitable means
such as screws 23.
, The sluice box ‘24 isremovably mounted on
occupied by toothed strips 3i which extend
to make frequent clean-ups. The rate of de
livery of the concentrate is determined by the
size and angle of the surfaces of the toothed strips
3|, the size of the opening in the spout 34, the
motion and the distance the material has to be
lifted.
Immediately above the sluice box, I arrange 45
a screen 35 preferably of wire netting, and this
screen has a wall 36 at three sides thereof, so
that particles placed on the screen and too large
to pass therethrough may be discharged by means
of the outlet 31 at one side of the box. Material 50
passing through the screen falls on to an ,impere
forate sheet metal plate 38 which is preferably
connected to the frame 35' of the screen and in
clines toward one side of the box so that material
deposited on the plate can be fed through an
2..
2,122,822
opening 39 from the plate into the sluice box.
Material which travels across the sluice box from
the opening 39 to the opposite _side of the box is
delivered through an outlet 40.
By making the plate 38, the screen 35 and its
frame removable from the sluice box, the whole
top of the box may be uncovered to permit access
to the interior of the latter.
In operation, the substantially liquid mixture
10 of materials containing the metal to be concen
trated is deposited on the screen, and due to
vibrations caused by the rotation of the shaft l4,
‘some of this material will pass through the screen
and land on the plate 38 which will direct it to
ward the Opening 39. Large particles incapable
of passing through the screen will be discharged
at one side of the machine through the outlet 31.
The material ?owing through the outlet 39 will
?rst be acted upon by the ri?le at one side of the
box, and then lighter materials will flow succes
sively over the rif?es until discharged through the
outlet 40. Between the rif?es, the lighter mate
rials will be loosened and raised by the undu
lated strips 28, while the heavier metal will pass
25 into the spaces or notches between the teeth of
the strips 3|, and will be fed lengthwise of the
sluice boxuntil it reaches the outlet spout 34. It
will be fed up: and out of this spout by continua
tions'of the toothed strips 3! which extend up
30 wardly along the spout as illustrated in Fig. 4.
While I have disclosed what I now consider to
- be a‘ preferred embodiment of my invention in
such manner that the same may be readily un
derstood by those skilled in the art, I am aware
35 that changes may be made in the details dis
closed without departing from the spirit of the
invention, as expressed in the claims.
What I claim and desire to secure by Letters
Patent is:
'
1. A placer mining machine comprising a sluice
box provided with a series of substantially par—
allel ri?les which divide the bottom portion of the
box into channels arranged side by side, means
‘for introducing a liquid mixture of light mate
rials and heavy materials into one of said chan
nels, means extending lengthwise of the chan~
nels and having undulated top surfaces for rais
ing the loose material and preventing it from
packing in the channels, means for moving heav
ier materials lengthwise of the channels, and
means for vibrating the box.
. 2. A placer mining machine comprising a sluice
box provided with a series of substantially par
allel riil‘les which divide the bottom portion of the
55 box into channels arranged side by side, means -
for introducing a liquid mixture of light mate
rials and heavy materials into one of said chan
nels, strips extending lengthwise of the channels
and having undulated top surfaces for raising the
loose material and preventing it from packing in
the channels, means including toothed strips ar
ranged in the channels between the ri?ies and
strips for moving heavier materials lengthwise of
the channels, and means for vibrating the box.
3. A placer mining machine comprising a sluice
box, means for vibrating the sluice box, substan
tially parallel ri?les arranged in the bottom por
tion of the box and dividing said portion into a
series of channels arranged side by side, means
for depositing a liquid mixture containing light
materials and heavy materials into an outermost
one of said channels, means for discharging light
material from the opposite outermost one of said
channels, strips extending lengthwise of the
channels and having undulated top surfaces
adapted to loosen and raise said light material to
prevent the same from packing in the channels,
and toothed strips positioned in the bottom por
tion of the channels for feeding heavier material
lengthwise of the channels, each tooth of the
toothed strips having a substantially vertical sur
face and an inclined surface sloping downwardly
from said vertical surface toward the vertical sur
face of a preceding tooth.
4. A placer mining machine comprising a sluice 10
box, means for vibrating the sluice box, substan
tially parallel ri?les arranged in the bottom por
tion of the box and dividing said portion into a
series of channels arranged side by side, means
for depositing a liquid mixture containing light 15
materials and heavy materials into an outermost
one of said channels, means for discharging light
material from the opposite outermost one of said
channels, strips extending lengthwise of the
channels and having undulated top surfaces 20
adapted to loosen and raise said light material
to prevent the same from packing in the chan
nels, and toothed strips positioned in the bottom
portion of the channels for feeding heavier ma
terial lengthwise of the channels, each tooth of 25
the toothed strips having a substantially vertical
surface and an inclined surface sloping down
wardly from said vertical surface toward the ver
tical surface of a preceding tooth, said strips
having alternately arranged ridges‘
30
5. A placer mining machine comprising a sluice
box having an inlet at one side and an outlet
at the opposite side, substantially vertical ri?les
in the bottom portion of the box "between the
inlet and the outlet, said ri?les dividing the 35
bottom portion of the box into substantially
parallel channels extending lengthwise of the
box, an outlet spout at one end of the box for
discharging concentrated material from the chan
nels, strips projecting upwardly from the bottom
of the box and arranged in said channels, said
strips having undulated top surfaces and means
in said channels between the ri?ies and strips for
feeding heavy material through said outlet spout.
6. A placer mining machine comprising a sluice
box having an inlet at one side and an outlet
at the opposite side, substantially vertical ri?les
in the bottom portion of the box between the inlet
and the outlet, said ri?‘les dividing the bottom
portion of the box into substantially parallel
channels extending lengthwise of the box, an
outlet spout at one end of the box for discharg
ing concentrated material from the channels,
strips, projecting upwardly from the bottom of
the box and arranged in'said channels, said strips
having undulated top surfaces and means in said
channels between the ri?les and strips for feeding
heavy material through said outlet spout, the
strips being arranged in pairs in each channel.
7. A placer mining machine comprising a sluice
box having an inlet at one side and an outlet at
the opposite side, substantially vertical ri?ies in
the bottom portion of the box between the inlet
and the outlet, said ri?les dividing the bottom 65
portion of the box into substantially parallel
channels extending lengthwise of the box, an
outlet spout at one end of the box for discharg
ing concentrated material from the channels,
strips projecting upwardly from the bottom of the 70
box and arranged in said channels, said strips
having undulated top surfaces andv means in said
channels between the rif?es and strips for feeding
heavy material through said outlet spout, the
strips being arranged in pairs in each channel, II
2,122,822
and the strips of each pair having‘ alternately
arranged ridges.
8. A placer mining machine comprising a sluice
box, means for vibrating the box, means for in
troducing material to be treated into one side
of the box, means for discharging light material
from the opposite side of the box, substantially
parallel ri?ies arranged in the bottom portion of
the box between the inlet and the outlet, each
10 rif?e consisting of an angle iron having a hori
zontal wing spaced from adjacent ri?les, and an
upstanding wing, the upstanding wings forming
a series of channels extending lengthwise of the
box, an outlet spout at one end of the box for
15 discharging heavier material from the channels,
strips mounted on the horizontal wings of the
rifiles and extending lengthwise of said channels,
said strips having undulated top surfaces and
toothed strips on the bottom of the box posi
20 tioned between the rif?es for feeding heavier ma
terial lengthwise of the channels and through
said outlet spout.
9. A placer mining machine comprising a sluice
3
box, means for vibrating the box, means for in
troducing material to be treated into one side
of the box, means for discharging light material
from the opposite side of the box, substantially
parallel riiiies arranged in the bottom portion
of the box between the inlet and the outlet, each
riffle consisting of an angle iron having a hori
zontal wing spaced from adjacent rif?es, and an
upstanding wing, the upstanding wings forming
a series of channels extending lengthwise of the 10
box, an outlet spout at one end of the box for
discharging heavier material from the channels,
strips mounted on the horizontal wings of the
ri?ies and extending lengthwise of said channels,
said strips having undulated top surfaces, toothed 15
strips on the bottom of the box positioned be
tween the ri?les for feeding heavier material
lengthwise of the channels and through said
outlet spout, a foraminous screen positioned
above the sluice box, and means for guiding ma 20
terial passing through the screen into the inlet
of the sluice box.
JAMES F. NOEL.
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