Sept. 6, 1932. L. G.

SYMONS 1,876,034
GRIZZY BAR
Filed Dec. 17, 1930 4. Sheets-Sheet l

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GRIZZLY BAR
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GRIZZLY BAR
Filed Dec. 17, 1930 4. Sheets-Sheet 3

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Sept. 6, 1932. L. G. SYMONS 1,876,034
GRIZALY BAR

Filed Dec. 17, 1930 4. Sheets-Sheet 4

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 Patented Sept. 6, 1932 1,876,034

UNITED STATES PATENT OFFICE

LOREN G. SYMONS, OF HOLLYWOOD, CALIFORNIA, ASSIGNOR. To syMons BROTHERs DE
VELOPMENT COMPANY, OF HOLLYWOOD, CALIFORNIA, A CORPORATION of DELA
WARE
GRIZZY BAR,
Application filed December 17, 1930. Serial No. 502,914.
This invention relates to separating bars aperture or block
so formed is a rectangular bushing
B° of rubber which is provided with
for employment with a separating deck a central aperture
in which bars with inter-penetrating arms tangular also. It B, herein shown as rec
will be clear, as from
and fingers are oscillated about parallel axes, Figures 3 and 4, that both
and means are provided for causing move and the rectangular aperturetheareblock itself SO
oblong or
ment of the material to be separated across elongated with a long diameter generally
the bars. One object is the provision of a perpendicular to the side frame member A.
Separating member which shall be resistant or A. The block B is preferably sur
to wear and to impact. Another object is the rounded by a metal covering member B' 55
O provision of such a member which shall be overturned at the sides as at B to prevent
adapted to support particles above a prede any undue lateral expansion of the block
termined size at a level above the apertures B. The member B is split and the opposed
defined by the opposed bars and their arms edges are spaced slightly apart as at B'.
and fingers. . .. . . .. .
Other objects will appear from time to The cover plate B is provided with center- 0.
5
time in the course of the specification and bolt B9, Bthebetween ing ears which passes a securing
ends of which pass through
I illustrate my invention more or less dia corresponding apertures in the angles B B',
claims. - . . . .

grammatically in the accompanying draw bushings B. The are in which apertures seated cone shaped
assembly is drawnto
20 ings, wherein-
Figure 1 is a plan view;
-
. . . ..
gether as by the nut B. The tapered bush
Figure 2 is a partial plan view on an to seat the cover plate B firmly againstserve
ings Bhave some wedging action and
the
enlarged scale illustrating the bars in top of the rubber block B and to maintain
greater detail; said block under a desired predetermined 70
25 Figure 3 is a partial side elevation;
Figure 4 is a section on the line 4-4 of compression. . . . . . . .
Figure 3; It will be understood that the blocks B3 are
arranged in parallel
Figure 5 is a section on the line 5-5 of relation along the opposite frame members.
s or in definitely spaced
Like parts are indicated by like symbols Threaded through each opposite pair of said 75
Figure 2. .. . . .. . . . - .
30 throughout the specification and drawings. includes a central blocks are separating bars. Each such bar
Referring to the drawings, A generally in are upwardly built bar up
C, the ends of which
as at C1. The end with
dicates any suitable frame member, of which the upwardly built up portion
I show the side channel members A' A' aperture B of the rubber block seats in the
80
which may be connected as by the transverse end of each bar is a socket or aperture.each B. In
C?
end members A*. In order to support the which may receive a ball Copposed to an
frame and screen at any desired angle, I adjustable abutment Cin a bracket C, which
may provide supporting abutments or brack may for example be welded to the upper
ets A*.
Mounted upon the upper
- . .
flange of each flange of the channel member A1 or A. The 85
40
channel A' A' are a plurality of boxes or in said Cbracket abutment is herein shown as screwthread
housings, each formed by opposed angles ed apertured disc C
C and is provided with an
through which may be
B B, as shown for example in Figure 3 passed a cotter C which may penetrate the
the top being closed by a cover plate B°. bracket C. and thus prevent rotation of the 90
45 Positioned within the general rectangular
 1,876,034
member C and thus hold it in any desired a longitudinally extending plate or plates E
adjusted position. It will be noted that the
to which the flexible member E may be
center of rotation or oscillation of the bar C, bolted or otherwise secured. The brackets E
as generally defined by the ball C, is midway may be adjusted as by the slots E9 through
of top and bottom of the built .up end portion
of the bar. which pass any suitable securing members
Laterally projecting from opposite sides E7. On the end bars of the bed, as shown in 70
of each bar C are aligned arms D, the arms need be 1,used,
Figure only inwardly projecting fingers
being provided with laterally extending fin actually definedso bythatbarstheand
ends of the bed are
not by outward
10 gers D. It will be seen as in Figure 2 that ly projecting fingers.
the arms D are generally perpendicular to In order to impart to the bars an Oscillat 75
the bars C and that the fingers D are gen ing movement, I provide a longitudinal rock
erally parallel with the bars C. The junc er arm extending along one or both sides of
tion of arms and bars and of fingers and arms the separating bed. Iillustrate it herein only
may be provided with fillets as at D, if de along
sired. The upper surfaces of bars, arms and a singleonerocker
side of the bed as in normal use 80
fingers are in general parallelism and are understood thatarmif isnecessary
sufficient, but it will be
a correspond
substantially below the tops of the built up ing
portions of the ends of the bars as at C". In positioned along the opposite sidearm
and substantially identical may be
of the bed.
20 fact, the center of oscillation, as defined by
I illustrate for example an arm including a 85
the ball C°, is adjacent or, in the particular channel
embodiment shown, only slightly below the upwardlyG.extendinghaving a bottom portion G and
effective upper surface of bars, arms and fin 3°. Extending acrossside portions or flanges
gers. If desired, the bars may be formed of side flanges G are a pluralityarm
said between the
of tubes or cyl
a softer or less resistant material than the
arms and fingers. For example, manganese inders G8, one for each bar to be oscillated.
Surrounding each said cylinder G is a bush 90
steel arms may be welded to the bars, in Such ing G1 preferably of rubber or some suitable
case the arms including a stirrupportion D yelding material. Clamped about said bush
passing about the bottom of the bar C and ing and connecting it with the corresponding
30 joining the arms D on opposite sides of the bar to be oscillated is an arm generally indi
bar. The bars may also be provided with cated as G which includes opposite parts 96
bottom reinforcing members D from which G. G., such parts being clamped or secured
laterally extend finger reinforcing members together about the outwardly extending en
D°. It will be seen as from Figures 1 and 2 larged portion of the shaft and about said
that the arms extending laterally from adja bushing. To connect the members G to the 100
cent bars inter-penetrate, and that the fingers bar,
of adjacent arms inter-penetrate in such which passes through upper
I may provide an securing bolt G"
the enlarged end por
fashion that a pervious separating bed is pro tion
vided with a plurality of apertures. In the whichofpasses
the bar, and lower securing bolt G
40 form of the device herein shown these aper the members beneath it. At the lower end of
G, I may provide a singlese 05
tures are uniformly distributed and are of curing bolt G9 with its securing nut Go
uniform size, but a slight variation in size, which draws together about the bushing G
shape separating
given and distribution may be made in a the arcuate clamping elements.
bed if necessary. G'. It will
45 be understood that the pressure upon the
Referring for example to Figures 1 and 2 bushing
it will be seen that extending longitudinally G may be varied or adjusted, as by ll.0
of the separating bed, and aligned along the varying the thickness of number of the shims
G19 as shown in Figure 3. It will be under
upper surface of the various arms, are up stood that the parts are so drawn up or se
wardly extending ridges E. The ridge for cured that the rubber bushing G" is held
each pair of arms extends from the end of against rotation to the cylinder G and is also
one arm across the bar and to the end of the 5
opposite arm. The aligned portion of the held against rotation in relation to the sur
next bar is provided between its arms with a rounding members Gil of the arm G. In
corresponding ridge portion E, whereby in other words, relative movement of the parts
effect a plurality of continuous ridges extend causing internal torsion of the rubber and
from end to end of the separating bed, hav relative rotation or movement of opposed 20
ing for effect to support a larger or the flatter abutting surfaces of rubber and metal.
pieces slightly above the surface of the sepa : In order to move the bar G as a whole, I
rating bed. Along the end arms of each bar provide the below described connection,
is an even higher terminal or boundary ridge namely a bar of opposed and generally tri
E° within which depends a preferably flex angular plates H H which depend from the 25
ible wall member E8 which may be mounted bar G as shown in Figures 3 and 4. These
on any suitable brackets or supports E, plates are laterally outwardly inclined some
which in turn are secured to one of the side what as at H H and may be reinforced
65 members A* or A9. The brackets may carry at their lower portion as at H2 to receive the
tube or cylinder H. This cylinder in turn 130
 1,876,034 3
has about it the rubber bushing H' about direction. Also, while the arc of travel of
each arm increases outwardly from its cen
which are clamped the opposed arcuate stir tral
rups H H at the end of an actuating eccen posedrotation, the relation between the op
walls of adjacent arms and fingers of
tric arm below described. H are any suit different bars is always the same because the
able bolts with the nuts H, whereby the pres
sure about the bushing H may be adjusted, maximum travel at the end of one bar takes
as for example through the shims H. The jacent bar or the
place adjacent minimum travel of the ad
structure above described may be seated upon ment between opposedandsides
arm, the relative move
of the individual 75
the tapered end H of the eccentric arm H, apertures is uniform.
O to which it may be secured as by the nut H. When I wish to separate material having
it will be noted that the nut His mounted particles with a wide range in size, for ex
with a separate member H through which ample when a mass of larger particles or
pass the ends of the bolts H and which abuts fragments, mixed with fines, is to be sepa CO
against the member H, being separated from rated, a large particle, for example, a flat
it for example by additional adjusting shims fragment, if it slides along the surface of
may employ any suitable means for actu apertures. I therefore providemany
the bed, might temporarily blind of the
H14. -

ating the arm H. But since the details of spacing these excess oversize particles up means for
Such actuating means do not of themselves wardly away from the screen surface. Hence -8 s
20 form part of the present invention they are the ridges E, E' which extend longitudinally
not described in detail.
It will be realized that whereas I have de from end to end of the separating bed and
scribed and shown a practical and operative surfaceproject
which upwardly above the normal
means for carrying out my invention, that These ridges carry ofthebars,
of the tops
big
arms and fingers.
particles as they
25 nevertheless many changes in size, shape, travel along the screen and space them up
number and disposition of parts may be Wardly away from the screen openings so
made, and that my process may be carried out that the small particles which sift down to
with a variety of different structures. I wish the bottom of the mixed mass are screened
my description and drawings to be taken, out or separated without even a temporary
30 therefore, as in a broad sense diagrammatic or blinding of the separating apertures.
illustrative, rather than as limiting me to my Conventional screening, with a screen body
precise showing herein. .. . ..
The use and operation of my invention are vibrated
tire sheet
as a unit, raises and lowers the en
of material being screened, caus CO
as follows: ing the entire mass to travel by jerks. In my
35 I maintain a separating bed or zone of sep present separating bed the upward propelling
aration wherein opposed bounding walls of force is not directed against the entire mass
individual screening apertures are given a simultaneously, but against
positively controlled and limited differential ticles, or individual groups ofindividual par
movement, along lines or directions generally a result, something of the effect of an As
particles. air
0 perpendicular to the plane of the bed or separator is obtained, and it is unnecessary
zone. I maintain a movement of relatively bodily to displace the entire mass. As the
short excursion and of relatively high ve arms and fingers on one side of each rod
locity, my experience being that a slow move rise, the arms and fingers on the opposite side
ment and a long travel causes grinding rather drop. The very coarse material being, in ef 110
than clean cut separating or screening. fect, screened out by the above mentioned
When I employ a short travel and high fre ridges, the fines have free access to the sepa
quency, the particles are not ground, but rating apertures, and pass therethrough. As
either pass through the apertures or are else a result a very complete segregation of the 5.
kicked out. Aparticle may not go through fines from a body of particles of mixed sizes
50 an aperture unless it is small enough to fall may take place without a preliminary coarse
freely through the aperture. If it barely fits screening and without preliminary separa
an aperture, in such a way that grinding will
result, it is immediately kicked out and goes tion
effect
or removal of the larger particles. In
the result both of a bar grizzly and of 20
on to try the next hole and, if even slightly an attendant or following screen is obtained
55 oversize, passes entirely across the separating and my bed or Zone of separation maintains

The zone is formed by a series of screen in effect two separate screening planes, both
ZO8. -

bars having interpenetrating arms and fin tiontheand

in same material bed or Zone of separa
gers, as herein shown. Each individual bar the same both carried by and oscillated by 125
supporting and actuating mecha
60 is oscillated about a pivot or axis, all the
bars being oscillated in a like rotational di rials to a cone crusher,feeding
nism. For example, in mixed mate
rection. The result is that the opposed arms to crush particles of diametersbeasdesirable
it may
high as
and fingers of adjacent bars are contin
ually moving in opposite directions, except nine inches or more. Assume that such ma
at the time of the dead points of change of terials have to be crushed to a size say of '
 4 1,876,034
one inch, but are accompanied by a substan
tial volume of particles already reduced to a tion of the outermost arm with the bar, the
size of one inch or less. I may pass the mixed upwardly arm
outermost being provided with a flange
extending to a height somewhat
materials over a separating bed the diam greater than the height of the ridges upon
eters of the apertures of which are, say, one the remaining arms.
inch. These apertures will permit the un 3. In a separating bar, a longitudinally 70
dersized material to escape, while all mate extending bar member, arms extending lat
rial above one inch will pass over the sepa erally from opposite sides of said bar, fin
rating bed, and may be conveyed to the
O crusher. Not only will my separating bed gers laterally extending from opposite sides
screen out the fines, but it will support the of the arms, and ridges upwardly extending
impact and weight of the large boulders from along the tops of the arms, the tops of the
which the fines are separated. I may freely ridges, and the upper faces of the arms, de
feed heavy jagged rocks to my bed, and sepa fining generally parallel planes, the arms
rate the fines. I may, for example, employ along opposite sides of the bars being in line,
hars of manganese steel, which bars will the fingers of the adjacent arms and of op 80
efficiently resist deformation or breakage, and posite sides of the same arm being aligned.
4. In a separating bar, a longitudinally
which will have a long life of wear. If ordi extending
nary screen cloth were employed, the heavy bar member, arms extending lat
20 jagged boulders would quickly batter the erally from opposite sides of said bar, fin
mesh to pieces. - gers laterally extending from opposite sides
of the arms, and ridges upwardly extending
In connection with the structure employed, along
I provide practically unbreakable means for ridges,the tops of the arms, the tops of the
and the upper faces of the arms, de
not only spacing the larger particles away fining generally parallel planes, the arms
25 from the separation Zone of the bed, but
from preventing them from damaging the along opposite sides of the bars being in line.
5. In a separating bar, a longitudinally
separating members. The manganese steel extending
bars and fingers are as effective as or more erally frombaropposite member, arms extending lat
sides of said bar, fin
effective in separation than screen cloth, and
30 can resist the punishment of large boulders gers laterally extending from opposite sides
in the way in which screen cloth cannot. of the arms, and ridges upwardly extending 93
I claim: along the tops of the arms, the tops of the
ridges,generally
1. In a separating bar, a longitudinally fining and the upper faces
parallel of the arms, de
planes.
extending bar member, arms extending lat 6. In a separating member adapted for use
35 erally from opposite sides of said bar, fin
gers laterally extending from opposite sides in a separating bed, a longitudinally extend
ing bar, a plurality of arms extending from CG
of the arms, and ridges upwardly extending opposite sides of the bar, and a plurality of
along the tops of the arms, the tops of the fingers extending from opposite sides of the
ridges, and the upper faces of the arms, de arms the upper faces of bar, arms and fin
40 fining generally parallel planes, the arms
along opposite sides of the bars being in ing gers defining a single plane, said bar extend 103.
line, the fingers of adjacent arms and ofOp armsoutwardly and fingers,
longitudinally beyond said
said outwardly extending
posite sides of the same arm being aligned, portion of the bar extending upwardly above
and a terminal extension at each end of each
45 said bar, extending outwardly beyond the the normal plane of the upper faces of bar,
junction of the outermost arm with the bar, arms and fingers.
separating bar, a longitudinally 110
the outermost arm being provided with a extendinga bar7. In
member, arms extending lat
flange upwardly extending to a height some erally from opposite sides of said bar mem
what greater than the height of the ridges
50 upon the remaining arms, the terminal ex ber, each said arm including a web portion
tensions extending upwardly above the nor and a reinforcing rib therebeneath, of great 5
er depth but of less width than such web
mal plane of the tops of the fingers.
2. In a separating bar, a longitudinally portion,
posite
fingers laterally extending from op
sides of the arms, the fingers including
extending bar member, arms extending lat
55 erally from opposite sides of said bar, fin web portions lying in the plane of the webs
of the arms and reinforcing ribs positioned 12)
gers laterally extending from opposite sides therebeneath
of the arms, and ridges upwardly extending forcing
along the tops of the arms, the tops of the 8. In ribs ofandtheassociated
arms. with the rein
ridges and the upper faces of the arms, de extendinga bar separating bar, a longitudinally
: 60 fining generally parallel planes, the arms member, arms extending lat
erally from opposite
along opposite sides of the bars being in line, ber, each said armineluding sides of said bar mem
the fingers of adjacent arms and of opposite and a reinforcing rib therebeneath, a Web portion
sides of the same arm being aligned, and a depth but of less width than such ofweb greater
por
terminal extension at each end of each said tion, fingers laterally extending from opposite
:05 bar, extending outwardly beyond the junc sides of the arms, the fingers including web
 1,876,034
portions lying in the plane of the webs of the
arms and reinforcing ribs positioned there
beneath and associated with the reinforcing
ribs of the arms, and ridges upwardly ex
tending along said arms, the upper surfaces
of said ridges defining a plane generally
parallel with the plane of the web portions
of fingers and arms. -
Signed at Hollywood county of Los An
geles and State of California, this 11th day
of December 1930.
LOREN G. SYMONS.

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