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Патент USA US2132755

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Oct. 11, 1938.
R. D. NICHOLS
2,132,755
MATERIAL SEPARATOR
Filed Aug. 18, 1936
5 Sheets-Sheet 1
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RICHARD D. N lcHoLs,
ATT'X
Oct. 11, 1938.
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R D. NICHOLS
2,132,755
MATERIAL SEPARATOR
Filed Aug. 18, 1936
5 Sheets-Sheet 2
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RICHARD D. NICHOL§
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Oct. 11, 1938.
R. D. NICHOLS
2,132,755
MATERIAL SEPARATOR
Filed Aug. 18, 1956
5 Sheets-Sheet 5
/NVEN7'OR.
RICHARD D. Mar-201.5
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"EL 2 1» I
Oct. 11, 1938.
- R. D. NICHOLS
2,132,755
MATERIAL SEPARATOR
Filed Aug. 18, 1936
5 Sheets-Sheet 4
(0
/NVEN7'OR :
RICHARD D. Nlgv-loLs,
ATT'X
Oct. 11, 1938.
2,132,755
R. D. NICHOLS
MATERIAL SEPARATOR
5 Sheets-Sheet 5
Filed Aug. 18, 1936
[/VVE/VTOE’ :
RICHARD D. NICHOLS,
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Patented
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“2,132,755 ' v~
' UNITED‘ STATES rarem osrlcs } ~
J Richard
Nichols, Columbus, Ohio, minor to"
The Jc?rey Manufacturing Company, a cor
poration of Ohio
Application August 1a, 1930, Serial No. 96,843
20mins. (Cl- 209-496)
This invention relates to a jig and more par
tic-ularly to automatic means for controlling the
depth of the refuse bed formed on the screen
of a Jig.
An object of the invention is to provide a com
pletely automatic refuse depth responsive means
for controlling the depth of the refuse bed on the
screen of a jig, with a minimum expenditure of
power.
10
A more speci?c object of the invention is to
provide a ?oat control refuse ejector for a 'jig
in which the ?oat controls a valve, which valve
controls hydraulic means for determining the
rate of ejection of refuse.
Other objects of the invention will appear here
inafter, the novel features and combinations be
ing set forth in the appended claims.
In the accompanying drawings,
Fig. 1 is a side elevational view of a jig com
20 prising my invention with parts broken away in
the interest of clearness;
Fig. 2 is a front end elevational view of the de
vice of Fig. 1 with parts broken away in the in
terest oi’ clearness;
25
~
,
Fig. 3 is an enlarged detail elevational view
of the ?oat control valve and ejector operating
mechanism comprising my invention;
Fig. 4 is a sectional plan view taken on the
line l—4 of Fig. 3 looking in the direction of the
30 arrows;
Fig. 5 is a sectional detail view taken on the
line 5-5 of Fig. 4 looking in the direction of the
arrows;
Fig. 6 is a sectional detail of the valve taken
35 on the line 3-3 of Fig. 4 looking in the direction
of the arrows;
Fig. 7 is a side elevational view of the oper
ating mechanism for the rotary ejector valve;
Fig. 8 is a sectional view taken on the line 3-3
40 of Fig. .7 looking in the direction of the arrows;
and
,
'
»
Fig. 9 isva diagrammatic illustration of the
hydraulic system for controlling the rotary refuse
ejector mechanism.
Brie?y described, the main portion of the jig
45
comprises a main frame l0 formed by longitu
dinally extending channel members II, to which
are rigidly attached‘transversely extending chan
nel members i 2, to each of which are attached
50 upwardly extending angle members
i3. The
main frame l0 supports the longitudinally ex
tending tank H which is divided into two com
partments l5 and I3 which, except for obvious
di?erences, are of substantially the same con
55
struction. It will be evident that the number of
compartments may either be reduced to one or
increased above two to any desired number. The
tank It is providedwith a ieed chute l1 which
directs raw coal into compartment i5 and with—
in a discharge chute l3 which directs the clean 5
coal from compartment l6.
,Within each of the compartments l5 and I3
is provided a screen l3 carried upon an appro
priate adjustable frame 23 which is pivoted at
the forward end upon a transversely extending 10
shaft 2| and is supported by a pair of adjustable
hangers 22 at its rear end. It will thus be
evident that by adjusting the hangers 22, the
slope of the screen i9 may be adjusted to de
termine the rate of travel of material thereover. 15
Adjacent the lower end of the screen 19 there
is an opening 23 formed by a vertically adjustable
plate 24 carried by a baiiie or weir 25 which sep
arates the compartments i5 and IS. The open-'
ing 23 leads to a chute 26 which directs refuse 2°
to a rotary paddle wheel type refuse discharge
valve 21. The chute 26 includes a pivoted plate
23 carrying an arcuate contact plate 29 provided
with a weight 30. In normal operation the arcu
ate plate 29 will contact the blades of the valve 25
21, but should an unusually large piece of refuse
be caught therein it will move as provided by the
pivoted plate 23 and permit the large particle to
pass through said valve 21.
The valve 21 will discharge refuse into the 30
boot 3| of an elevator mechanism 32 by which
the refuse will be elevated and discharged from
the jig through a chute 33.
To drive the two elevator mechanisms 32, 32 I
provide an electric motor 34 ‘and an appropriate 35
drive gearing 35 whereby both of said elevator
mechanisms 32, 32 will be operated from the
same motor.
‘
To provide for supplying water to the compart
ments l5 and I6 there is provided a longitudinal- 40
ly extending water pipe 36 with an individual
valve I31 leading to each of the compartments
l5 and it. Each of said compartments l5 and
I3 is also provided with a bottom comprising a 45
reciprocating diaphragm 31 in the form of a
cylindrical plate which is connected to an in
wardly extending stationary plate 33 provided
with a circular opening. A ?exible ring 39, pref
erably of rubber, connects the edges of the 50
plate 33 and the diaphragm 31 to provide a water
tight bottom for each of said compartments i5
and it while permitting reciprocatory move-.
ment of the diaphragm 31. It is to be noted that
the plane of the diaphragm 31 is substantially as
2 .,
2,182,756
parallel with the plane of thescreen I8 in its
normal position of adjustment.
To provide for the reciprocation of the dia
phragms 81, 81 of the two compartments i5 and
?uid of the jig. It is provided with an integral
top post ‘H to which is attached an upwardly
extending stream-line pipe 12 provided with ad
justing apertures 18 and attaching shafts ‘l4 and
i8 each of said diaphragms is provided with a ' 15 which are mounted in receiving sockets car
piston rod 48, the end of which is connected to
ried by the arms 88 and 88 respectively, by anti
a piston in a cylinder 4|.
friction bearings.
The cylinder 4| is
provided with air under pressure by a conduit
42 which acts on the mentioned piston to
10 counter-balance the normal weight of the liquid
on the diaphragm 81. Also attached to each
diaphragm 81 is a connecting rod 48 which is
adjustably attached to a rocker arm 44 which is
pivoted to a bracket 45 carried by a pair of chan
15 nel members 48, which channel members 46 also
support the cylinder 4i. The connecting rod 48
is mounted in a slide block 41 which may-be ad
justed upon the rocker arm 44 to adjust the
stroke of the diaphragm 81.
so
The rocker arm 44 is provided with a cam
roller 48 adapted to ride between the outer and
inner tracks of a cam 48 carried upon a shaft
58. The two shafts 58 will be interconnected by
a chain and sprocket mechanism 5i which is
provided with a chain tightening mechanism 52.
To drive the two shafts 58 and thus to recipro
cate the two diaphragms 81, there is provided a
single electric motor 58 which drives one of the
shafts 58 directly through speed reduction gear
ing 54. (Fig. 2.) It will thus be evident that
means are provided to reciprocate the two dia
phragms 81 through repeating cycles of opera
tion as determined by the formation of the cams
48. These cams may be of the same or different
35 shapes for the two compartments l5 and i6, and
may be operated either in synchronism or out of
phase. It is preferred that they operate 180
degrees out of phase thereby to equalize the load
upon the motor 58. It is also to be noted-that
the stroke of each of the diaphragms 81, 81 may
The pipe ‘I2 also carries a
pointer 18 which cooperates with a stationary
scale 11 carried by bracket 58, to indicate the
average position of the ?oat 18. A rod 18 10
adapted to receive adjustable weight washers ‘I8
is also carried adjacent the top of the pipe 12.
By removing or replacing washers 18 the e?'ec
tive weight of the ?oat 18 may be adjusted. It
will be evident that the elements just described
provide a parallel motion mechanism whereby
the movement of the ?oat 18 will be transmitted
to the shaft 8i and the position of said shaft
8| is employed to control the rate of discharge of
refuse by controlling the rate of rotation of the 20
refuse discharge valve 21.
It is to be particularly noted that all friction
surfaces in the ?oat control mechanism are
mounted upon anti-friction bearings, thus pro
viding for a very sensitive ?oat mechanism. I
employ this very sensitive ?oat mechanism
merely to control a valve which, of course, will
require a minimum of energy, thus maintaining
at a maximum the sensitivity of said ?oat
mechanism.
As best seen in Figs. 4, 5 and 6, the control
valve is provided by inserting a bushing 88 over
the stub shaft 88 and into the sleeve 88. The
bushing 88 is provided with an enlarged key-way
8| (see Fig. 5) with which a key 82 carried by
stub shaft 63 cooperates. It is to be noted that
the key 82 does not fit tightly in the key-way 8|
and thus a limited amount of up and down mo
tion of the ?oat ‘I8 is permitted without requir
ing corresponding rotation of the sleeve 88. This 40
permits the normal up and down motion of the
?oat ‘l8 incident to the pulsations of the jigging
be individually adjusted. It is thus possible to
give separate and individual treatment to the
bed of material in each of the compartments i5 _ ?uid without affecting the refuse discharge
and I6 which is particularly desirable in view of mechanism. It is thus evident that the bushing
45 the fact that the beds of material are inevitably 88 will take an angular position determined by 45
the normal average position of the ?oat 18.
of different composition in the two compart
The bushing 88 is also provided with a pair of
ments.
1
Attention is now directed more particularly to grooves 88 and 84 which are separated by integral
Figs. 4 to 9, inclusive, of the drawings and to the bosses 85 and 88. Formed in the bushing 88 are
four ports, 81, 88, 88 and 88. To port 81 is con
50 improved and sensitive control means for the
nected a pipe 8i leading to the oil reservoir 81 of
refuse discharge valve 21, comprising my inven
‘tion. Mounted upon- a transversely extending the ?uid pressure system. To port 88 is con
angle member 55 for each of the compartments nected a pipe 82 leading to the top of a control
cylinder 85. To port 88 is connected a pipe 88
i5 and i6, which is supported by the longitudi
nal sides of the tank l4, are a pair of brackets 56
and 51. The bracket 56 is provided with a pair
of vertically spaced sleeves 58 and 58 (Fig. 3),
and the bracket 51 is provided with a sleeve 68,
the axis of which is in alignment with the axis
60 of sleeve 58. (Fig. 4.) Between the sleeves 58
and 68 and extending through each of them is a
composite shaft 6i formed by stub shafts 62
and 63 interconnected by a hollow pipe 84. Stub
shaft 82 is mounted in anti-friction bearings 65
65 in the sleeve 58 and stub shaft.“ is mounted in
anti-friction bearing 66 in sleeve 68. A‘ stub
shaft 61, somewhat similar to stub shaft 62, is
also mounted in appropriate anti-friction bear
ings in sleeve 58.
Extending forwardly from and rigidly attached
to the stub ‘shafts 62 and 61 is a pair of parallel
arms 68 and 68 respectively, which form part of
a parallel motion mechanism for supporting a
?oat ‘III. The ?oat ‘I8 is of stream-line form and
is adapted. to be totally submerged by the jigging
leading to the pressure side of an oil pump 88
which may be a gear type pump. To port 88 is
connected a pipe 84 leading to the bottom of the
cylinder 85. (See Figs. 1 and 5.)
In the normal position of adjustment of the
control valve, as illustrated in Fig. 6, the ports 60
88 and 88 will be sealed by the bosses 85 and 86,
thus maintaining the piston 88 in cylinder 85 in
whatever position it has been moved to. At the
same time ?uid in the pipe 88 will be shut off and
the pump 88 will operate merely to pump ?uid 65
into the reservoir 81 through the high pressure
relief valve 88, seen particularly in Fig. 9 of the
drawings.
In the ?oat ‘I8 is lifted in response to a prede
termined large accumulation of refuse on the
screen l8, the bushing 88 will rotate in a clock
wise direction, as viewed in Fig. 6, resulting in
the establishment of vcommunication between the
pipes 82 and 83 and between the pipes 8i and 84
through the grooves 84 and 83, respectively. As
3
2,182,765
a consequence pressure will be supplied to the
top of the piston 98 in cylinder 95 to move the
piston downwardly while the bottom of said pis
ton is connected to the oil reservoir 91. This
movement will continue so long as the bushing is
in said rotated position. If said bushing 88 is
rotated in a counter-clockwise direction by the
lowering of the ?oat 18, then communication will
be vestablished between the pressure pipe 93 and
the pipe 94 leading to the lower side of piston 98
and communication at the same time will be es
tablished between pipes 9I and 92. As a conse
quence, the piston 98 will be elevated in the cyl
inder 95.
It is therefore obvious that the position of the
piston 98 will be adjusted whenever the ?oat 18
moves from its normalposition. The movement
of said piston 98 is employed, as hereinafter de
scribed, to control the rate of discharge of the
refuse, by controlling the rate of rotation of the
refuse discharge valve 21.
It may also be noted that upon the end of the
stub shaft 63 there is carried a pendulum mech
anism I88 (Figs. 1 and 3) to stabilize the action
of the ?oat 18.
Attention is now directed particularly to Figs.
1, "I and 8 and to the mechanism for rotating the
refuse discharge valve 21 under the control of
the piston 98. It may ?rst well be noted that
the cylinder 95 is pivotally mounted upon a
bracket I8I carried by a side wall of the tank I4
to provide free pivotal movement of said cylin
der 95. The piston 98 is provided with a piston
rod I82 and with a packing gland I88 to insure an
oil-tight head-end compartment for the cylin
der 95. Piston rod I82 connects to a rod I84 by
a turnbuckle mechanism I85, thereby providing
an adjustment for the effective length of the arm
formed by rods I82 and I84. Rod I84 is pivoted
40 to a bracket I86 carried upon arms I81, I81 pro
vided with counter-weights I88 and supported
upon inner bearings of a bracket I89 supported
by screws II8 upon a removable plate III, which
plate is carried by the side wall of tank I4. The
plate III is provided with a journal bearing II2
for a shaft II3 of the refuse discharge valve 21.
The shaft H3 is also journaled in spaced jour
nals provided by the bracket I89. By removing
the bracket I89 and the plate III, the refuse
50 discharge valve 21 may be removed from the tank
I4 as a unit by moving it laterally therefrom.
(See Fig. 8.)
_
Keyed to the outer end of the shaft H3 is a
ratchet wheel II4 which, upon being rotated, will
55 rotate said shaft H3 and thus rotate the refuse
discharge valve 21. To oscillate the ratchet
wheel I I4 I provide a continuously operating bell
crank lever II5 which carries a pair of engaging
pawls H8, and which is continuously oscillated
60 by a rod I I1 which is reciprocated by a crank I I8
(see Fig. 1) 'driven from shaft 58 through appro
priate speed reduction mechanism II9.
To control the extent of rotation of the refuse
discharge valve 21 upon each oscillation of the
65 bell crank II5, the bracket I86 carries a pawl con
trolling shield I28 which determines by its posi
tion the angular movement of the ratchet wheel
II4 for each oscillation of the bell crank H5.
The system is preferably so adjusted that in nor
70 mal operation there will be some movement of
the ratchet wheel II4 for each oscillation of
the bell crank lever H5 and this angular move
ment is either increased or decreased as required
by the depth of the refuse bed to maintain said
75 depth substantially constant. That is, if the
refuse becomes deeper than normal, the ?oat 18
will be effective to adjust the shield I28 so that
upon each oscillation of the bell crank lever I I5,
the refuse discharge valve 21 willmove through a
greater angle and thus discharge refuse at a
more rapid rate. When the depth of the refuse
bed is returned to normal, the shield I28 will be
moved by the ?oat 18 so that the refuse dis
charge valve 21 moves through a normal angle
for each oscillation of the bell crank lever I I5. If 10
the refuse bed becomes of anuundesirably low
depth then the shield I28 will be controlled by
the ?oat 18 so that the refuse discharge valve 21
only moves through a very small angle for each
oscillation of the bell crank lever H5 and in an
extreme case the shield I28 would prevent any
rotation whatever of said valve 21 by the bell
crank lever II5.
In the operation of the device comprising my
invention the raw coal to be cleaned by the re 20
moval of the refuse, such as pyrite, shale and
bony coal, from the pure coal, is fed to the feed
chute I1 leading to compartment I5 of the jig.
The tank I4 will, of course, be supplied with a
proper amount of water and the diaphragms 31 25
of compartments I5 and I8 will cause a pulsing
-movement of the liquid upwardly and downward
ly through the screens I9. As a consequence, the
raw coal will be first strati?ed in the compart
ment I5 with the refuse, and particularly the 30
shale and pyrite, on the bottom, and the clean
coal and bony coal strati?ed on top. The refuse
ejector mechanism 21 of the compartment I5 will
be adjusted with a view of removing practically
all of the shale and pyrite and possibly some of
the bony coal. The strati?ed clean coal and bony
coal will then pass into the compartment I6,
while remaining in a strati?ed condition, where
it will be more completely strati?ed with the bony
coal on the bottom and the clean coal on top. 40
The refuse ejector valve 21 of compartment I6
will be so operated as to remove the strati?ed
bony coal while the clean coal is discharged over
discharge chute I9.
The v?oat 18 in each compartment I5>and I6
will be so adjusted as to maintain a position
substantially on top of the strati?ed refuse which
is to be removed, and due to its very sensitive
construction will operate to control the rate of
discharge of a rotary discharge valve 21, to main
tain the depth of the refuse bed in each compart
ment at a predetermined value.
As a conse
quence, the jigging conditions in each of the com
partments I5 and I5 will be uniform, resulting
in a very efficient separation of the coal and
refuse. This uniform condition will be main
tained in an entirely automatic manner and by
my improved system, which is of extreme sensi
tivity due to the fact that the work required to be
done by the ?oat 18 is maintained at a- minimum, 60
namely, that of merely operating a control valve.
It is thus seen that a very e?lcient and entirely
automatic jig has been provided for cleaning coal.
While coal is the principal material for which
my jig is designed, it is evident that it may be 65
employed to separate other materials which differ
in speci?c gravities.
Obviously those skilled in the art may make
various changes in the details and arrangement
of parts without departing from the spirit and 70
scope of the invention as defined by the claims
hereto appended, and I therefore wish not to be
restricted to the precise construction herein dis
closed.
Having thus described and shown an embodi 75
4
8,189,765
ment of my invention, what I_ desire to secure by
Letters Patent 0! the United States is:
1. In a separator, the combination with a ma
draulic control system controlled by said ?oat
and controlling the rate of rotation of said valve,
terial support,‘ of a totally submerged ?oat, a
said control system comprising means providing
rotary discharge _ valve, a reciprocating arm,
a source of substantially non-compressible ?uid
under pressures cylinder having a piston there
in, entry ports at opposite ends of said cylinder,
means for rotating said valve a variable amount
upon each reciprocation of said arm including
an amount between the maximum and the mini-_
mum amounts, said means including a?uid oper-‘.
10
discharge refuse substantially continuously, a hy
said piston being connected to means to adJust
the rate of rotation 01' said rotary valve, a con
ated rod, a piston controlling said rod, valve
trol valve for said cylinder operable by said ?oat, 10
means controlling said piston to adjust it to
more than two positions, and anti-friction mount
ed means connecting said ?oat and valvejmeans.
said control valve ‘being so constructed and ar
ranged that when in its normal position said pis
ton will be locked in position by trapping said
2. In a separator, the combination with a mate
non-compressible ?uid on opposite sides thereo!
rial support, of a rotary valve for discharging . in an inert condition and when moved to opposite 15
refuse which accumulates on said support, means sides of said normal position said ?uid under pres
including a totally submerged ?oat for measuring sure will act on said piston to move it in opposite
the depth of refuse on said support, means for
substantially continuously rotating said valve to
RICHARD D. NICHOLS.
directions.
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