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Патент USA US2132163

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Oct. 4, 1938.
Filed 001;. 5, 1934
s Sheets-Sheet
1 ’
Oct. 4, 1938.
3 Sheets-Sheet
Filed Oct. 5, 1954
H60’ 5. Henry,
Oct. 4, 1938. -
Patented Oct. 4,
Fred B. I‘ienry, Columbus, Ohio, assignor to The
Johnny Manufacturing Company, a corpora
tion of Dhio
Application ‘ottom- 5, 1934, Serial No. wine
a 01m.
(Cl. ez-eel
My invention relates to portable foundry Sand
conditioning apparatus ‘adapted for use in small
‘ foundries or in foundries where complete- 0011-
ditioning- plants of the stationary'type are not
5 used, and one of the objects ‘of the invention
is the provision of improved and emcient ap~
paratus for screening the foreign material from
used foundry sand and aerating the screened’
sand for reuse in foundry work. »
Another object of the invention is the provi~=
sion of improved apparatus vfor separating 'cer-
materials as pieces or mete-Lot various shapes
and sizes, cahed lumps of sand, refuse, etc., and
moreover a pile of used foundry sand on the
foundry ?oor may be wet ununiformly at the
bottom and therefore not in condition for use- 5
until after having been mixed and aerated.
When the material from such pile is shoveled'
into the hopper is. while the apparatus shown
in Fig. 4 is being operated, the foreign mate
rial will be transferred continuously to the chute m
it, and the usable foundry sand will be directed
tain materials and directing the same to convenlent locations for emcient handling.
A further object of the invention is the ‘pro
15 vision of improved ejector and discharge mechanisln combined with means for directing granular material thereto.
to theeiector mechanism for aerating and mix- v
ing the sand and throwing it along the chute
22 outirom the rear end of the machine into
a windrow or pile spaced from the machine.
The hopper i9 is mounted on a supplemental
frame 28 which in turn is mounted on the main
Other objects of the invention will appear
hereinafter, the novel features and combinations
20 being set forth in the appended claims.
frame 8 so as to be universally tiltabie rela
tively thereto. Preferably. two pairs of spaced
apart springs 2d, 226 ‘are mounted on opposite go
In the accompanying drawings,
Fig. 1 is an elevation of my improved portable
foundry sand conditioning apparatus; '
sides of the supplemental frame 23. Each of
the springs it maybe retained in place by means
‘ -
of- the structure shown in Fig. 7.
An inverted
Fig. 2 is a plan view of the structure shown- cup-shaped bracket 25 is bolted at 26 to the
25 in Fig. 1;
inner Wall of the supplemental frame plate is 25
Fig. 3 is a rear view of the structure shown
in position for the hollow boss 2? to project into _
in Fig. 1;
the upper end of the spring it A horizontal
Fig. 4 is an enlarged longitudinal sectional
elevati0n_of the portable out?t shown in Figs. 1
g0 and 2, taken on the line Iii-4i of Fig. 3, looming
bracket 8' prolects inwardly from one of the
sides of. the frame ii in position to receive the _
lower end of the spring 26. The head 28 of a 30
in the direction of the arrows; '
bolt 29 may he used as a retaining boss for the
Fig. 5 is a transverse sectional elevation taken
lower end of the spring 26.
The lower edges
on the line 5—5 of Fig. 1, looking in the direc- ' of the cup-shaped brackets 25 are spaced su?i
tion of the arrows;
Fig. 6 isa plan view taken on the line H
of Fig. 5 to show the shape of the ?ights oi‘ the
ejector mechanism; and
universal tilting of the supplemental frame 23 35
relatively to the main frame 8.
.Secured to the supplemental frame 23 is a
‘Fig. 7 is an enlarged sectional elevation of a
portion of Fig. 4, taken on the line l-‘i, looking
40 in the direction of [the arrows.
hopper i583 located below the screen 3i. In order
to reinforce the screen and keep the same from
sagging a longitudinal bar 32 may be-s'e'cured at 40
Referring to Figs. 1 to‘ 4 inclusive, it will be
seenihat the portable Sand conditioning appa-
its ends to the upper ends of the hopper 30
midway between the sides of the-screen 3i, as
ratus comprises a vehicle having the main frame
shown in Fig. 5.
a mounted on the rear wheels 9. t and the front
e5 steering wheel it. .fI'he single front wheel. l8
is mounted on a frame it having a vertical
steering post 52 with a reduced portion it iournaled in the front bearing M3 at the front end
of the main frame t.
protecting canopy
50 15 may be rigidly connected to the frame M
and the steering Post 32. as shown in Fig
A drawbar l6 pivoted at H to the steering post
i2 is provided at the frontend with a culling
handle W, as Shown in Figs- 1 and
ciently above the bracket plates 8' to permit"
Used foundry sand may‘ contain such foreign
Welded to the inner side walls of the hopper
it; are abutment plates 33, 33 as shown in Figs. 45
4 and 5. Longitudinal rods 34, 34 welded to the
longitudinal edges of the screen 3| may be ‘10d
eated'on the horizontal edges 35, 35 of those
portions so’, to’ of the hopper so which are
located at the sides of the supplemental frame 23. 5'0
Retaining plates 38,36 are provided at their
lower edges with beveled extensions 31, 31 which
are adapted to engage the rods 34, a4. Bolts
38. 38 may be relied on to secure the retaining
plates 38 with their upper edges in engagement 55
with the abutment plates 33 and with their lower
beveled extensions 31 in engagement with the
rods 34, thereby not only securing the screen
3| in connection with the supplemental frame
23 but also holding said screen under lateral
tension. The longitudinal central bar 32 co
operates with the lateral edge supports to main
tain the screen 3| in ‘a horizontal'plane during
In order to effect such vibration of the screen _
3| as to transfer foreign material or unscreened '
material rearwardly along the screen 3| to the
transverse chute 29, I have provided gyratory
frame 23.
By referring to Figs. 4 and 5, it will be noted
that upper bearing blocks 39, 39 and lower bear
ing blocks 46, 46 are rigidly secured to' the main’
frame 8 at the sides thereof. Journaled by means
20 of the ball bearings 4|, 4| in the fixed bearing
blocks 39, 39 are the reduced end portions 42, 42
in Fig. 4, thereby transferring unscreened mate
rial or foreign matter rearwardly along the screen
3| to the chute 20. That is to say, by rotating
‘the shaft 43 in the direction of the arrow 16,
as shown in Fig. 4, the eccentrics 44 will vibrate
the screen 3| by moving the same upwardly‘and
rearwardly thereby throwing the foreign matter
toward the chute -26 in step by step movements.
The shaft 52 must rotate in a clockwise direc
tion as indicated by the arrow 11 on Fig. 4 so as
to engage the material and transfer it by impact
along the upwardly and rearwardly inclined dis
charge passageway which has a closed top ,and
.an open bottom.
The mixture of used sand and foreign matter 15
which is shoveled into the hopper I9, is prevent
ed by the rear wall 18 thereof from going beyond
a position back of a vertical plane extending
through the rear portion of the housing 46. It
is preferred that the screened material fall on
to the housing 46 and the inclined walls of the
hopper 36 including the laterally inclined walls
of the transverse shaft 43. At the inner ends of
the reduced extensions 42 are eccentrics 44, 44 36’ shown in Fig. 4. The screened material will ‘
thus be compelled to slide from the walls of the
which are journaled by means of the ball bear
ings 45, 45 in the ends of the- tubular transverse hopper into the opening in the bottom thereof 25
housing 46, the ends of which are rigidly secured . and consequently the distance which the screened
to the side walls of the hopper I9 and to the side material falls by gravity will be shortened and
walls of the supplemental frame 23'.
At the inner ends of the reduced extensions 42
30 adjacent to the eccentrics 44 are keyed the ?y
wheels 41, 41 to rotate with the shaft 43. Weights
4B, 49 may be detachably connected by means of
bolts 56, 5| to either or both of the fly wheels
41 and these weights may be so arranged as to
03 ‘SI counterbalance the throw or momentum of the
supplemental frame and the screen thereon, rela
tively to the main frame, and thereby lessen the
vibration of the main frame 8.
Spaced below the transverse shaft 43, as shown
its descending velocity decreased. The discharge
passageway 22 is in the form of an inverted U
shaped frame or chute detachably bolted at 19 30
and 86 to the main frame 8. The rotor compris
ing the spiders 54, 54 and the ?ights 59, 66, is
mounted at the rear end portion of the passage
way 22 intermediate the ends of the frame 8 and
adjacent to and below the opening 8| through 35
which material is received from the hopper 36.
An auxiliary hopper 82 may be mounted on the
inverted chute 22, as shown in Fig. 4, not only
to direct the screened material into the upper
, side of the cylindrical path of the ?ights 59 and 40
ends of which are journaled by means of the ball 66 but also to intercept the gravity fall of some
of the material, thereby decreasing its velocity
bearings 53, 53 in the bearing blocks 46, 40.
Keyed to the shaft 52 intermediate the ends . and‘ assuring its being acted upon by the. impact
thereof are two spiders 54, 54 each having a pair - of the ?ights 59 and 66, when in the dotted line
of radial arms 55, 56 to the outer ends of which . position shown in Fig. 4. The rotation of the 45
are detachably connected’by means of the bolts
51, 58 the ?ights 59 and '66, as shown in Figs. 5
and 6.
' - Mounted at the upper rear portion of the main
50 frame 8 is an electric motor 6|, as shown in Figs.
1 to 4, inclusive. Mounted at the outer end of
the armature shaft 62 is a pulley 63 adapted to
drive a belt 64 which is in engagement with the
V-shaped grooves 65' and 66' of the pulleys 65
55 and 66 which are respectively secured to the
shafts'43 and 52, as shown in Fig. 5. The pulleys
shaft 52 in a_ clockwise direction‘ as viewed in v
Fig. 4 should be atsuch speed as to assure the
impacting of substantially all of the material by
the ?ights 59 and 66. However, it is preferred to
have the discharge passageway provided with an 50'
open bottom so that such material as is not dis
charged from the rear end of the machine, may
fall on to the ?oor under the frame 8.
Inasmuch as Fig. 5 is a section taken on the.
line 5-5 of Fig. 1, looking rearwardly, the trail 55
ing face of the ?ight-59 is viewed in Fig. 5, and
,63, 65 and 66 may be protected by the covering in Fig. 6 is shown to be V-shaped. The leading ' '
casings 61 and 68. The ?y wheels 41, 41 may be face 83 is also'V-shaped. When the rotor oper
ates in a clockwise direction as viewed in Fig. 4,
provided with the canopies 69, 69. the leading face 83 of Fig. 6 moves in the direc 60
60 Lubricating connections for the ball bearings tion of the arrow 84. Since the leading face 83
45, 45 may be provided as indicated at 16, 10.
Likewise, lubricating connections may be pro .of each of the ?ights 59 and 66 is receding as
vided for the ball bearings 4|, 4| as indicated at shown in Fig. 6, or V-shaped when viewed in
1|, 1|‘. Provision may be made for lubricating plan while in its top position, the screened mate- ‘
ball bearings 53, 53 as indicated at 12, 12. rial will receive such impacts as not only to aerate 65
the same but also thoroughly to mix the same
The shafts ‘43 and 52 may be held against end
vwise movement as indicated at 13, 13 and 14, _14. during its discharge from the rear end ofv the
The armature shaft 62 must be rotated in a machine. That is to say, since the impact faces
clockwise direction as viewed in Fig. 4, so that of the ?ights are in intersecting planes, the ma
terial will be thrown along intersecting paths di
70 the belt 64 will travel in the direction of the ar
agonally across the inverted U-shaped chute from
rows 15, because the shafts 43 and 52 must ro
opposite sides, thereby thoroughly mixing or
' tate in clockwise directions, as viewed in Fig. 4. This is for the reason that the eccentrics 44 must
produce a gyratory movement of the, supple
75 mental frame in a clockwise direction, as viewed
blending the screened sand into a homogeneous
mixture by the time it reaches the pile of screened
and aerated sand back of the machine and dis 75
tant therefrom. That is to say, not only is the
impacted material thrown through the atmos
phere in planes extending tangentially from the
upper side of the cylindrical path of the ?ights
for the purpose of securing aeration, but the
material is also thrown along intersecting paths
for securing thorough mixing and blending.
Reverting to the hopper structure shown in
Figs. 4 and 5, it will be seen that the walls 30',
30' may be supported at their lower portions on
the housing 46 abutments 85, 85 made integral
with the housing 46; these abutments may also
serve as spacing and centering abutments for
the lower portion of the walls 30', 30".
Inasmuch as the foundry sand conditioning
apparatus shown in the accompanying drawings
is relatively small, it. may be very readily pulled
manually to any desired location in a foundry,
and electric connection made at 86 to the motor
6| from any suitable electric power outlet in the
foundry, and the motor may be started and
stopped by means of the push-button switch 81,
shown in Fig. 1. The screen 3| may be readily
removed for cleaning or repair or for replace
ment by a screen of a different mesh. The ?ights
59 and 60 may be varied in number and each may
be removed for repair or replacement. Although
the portable conditioning apparatus is particu
larly adapted to the cleaning and blending of
30 foundry sand, it may have a general application
and I therefore prefer to mount the inverted
chute 22 for detachment from the frame 8 so
that if desired it may be cleaned. In some in
stances, such as when light material in powdered
or desiccated form is to be aerated, the screen
3| may be entirely omitted or replaced by a rela
tively large mesh screen. It should also be noted
that if the screen 3i ‘is omitted and the granu
lated material will ?ow with sufficient freedom
40 from the bottom of the hopper 3U, 30', the belt
64 may be replaced by one shorter in length and
connected between the pulleys 63 and 66 only,
so as'to cut out the pulley 65. That is to say,
when it is not necessary or desirable to vibrate
the supplemental frame relatively to the main
frame, the pulley 65 may be disconnected from
the motor so that only the pulley 66 will be driven
in a clockwise direction, as viewed in Fig. 4.
However, as above-explained, when the machine
50 is to be used in foundries for reconditioning used
foundry sand, I prefer to combine the separating
mechanism with the rotor and rely on the latter
for its fan action andiimpact action to aerate
the screened sand and thoroughly mix or blend
the same for re—use in future foundry work.
The opening at the rear lower edge of the hop
per l9 may be regulated by means of the vertical
gate in the form of a ba?le plate 88 which may
be secured in adjusted position at adjusted ele
60 vation by means of bolts, as shown in Fig. .4.
Obviously those skilled in the art may make
various changes in the details and arrangement
of parts without departing from the spirit and
scope of the invention as de?ned by the claims
hereto appended, and I therefore wish not to be
restricted to the precise construction herein dis
Having thus described and shown an embodi
ment of my invention, What I desire to secure
70 by Letters Patent of the Unitedstates is:
1. In apparatus for conditioning granular ma
terial, the combination with a main frame, of
an auxiliary frame, a plurality of spaced-apart
coil springs for mounting said auxiliary frame on
said main frame, a screen on the auxiliary frame
to move bodily therewith, a hopper on said aux
iliary frame under said screen, mechanism com
prising a horizontal transverse shaft for vibrat
ing said auxiliary frame together with said screen
in orbital paths to effect conveying of unscreened 10
material over said screen from the front feed
end toward the rear end thereof and the deposit
ing of screened material into said hopper, a ro
tary impeller mounted on the underside of said
main frame and comprising a horizontal trans
verse shaft parallel to said ?rst-named shaft, a
motor on said main frame, driving connections
between said motor and both of said horizontal
shafts to rotate the latter in unison, mechanism
for journaling the impeller shaft in said main
frame so as to occupy such position under said
hopper as to receive screened material falling by
gravity from outside the periphery for impact
tangentially of the peripheral path of the im
peller to throw the material from the top side 25
of the impeller rearwardly from under the main
frame and the machine to a position distant
2. In a portable machine for conditioning gran
ular material, the combination with a vehicle 30
comprising a frame with one end supported on
a steering wheel unit and the other end on spaced
apart wheels, of a supplemental frame, a plural
ity of springs for supporting said supplemental
frame on said main frame, a rotary aerator 35
mounted at the lower portion of said main frame
for rotation relatively.‘ thereto onl-a horizontal
transverse axis, mechanism comprising a trans
verse shaft on said supplementalframe for im
parting to the latter a gyratoryiy vibration, a 40
screen on said supplemental frame, means for
guiding screened material to said‘ rotary aerator,
a motor on said main frame, meansfor driving
said shafts in unison from said] motor, an in
verted open bottomed U-shaped discharge chute 45
leading from said aerator outwardly from the ve
hicle frame, and means for driving said aerator
with its top rotating toward the rear outer open
end of said chute.
3. In apparatus for conditioning‘granular ma
terial, the combination with a vehicle comprising
a wheel supported main frame, of a supplemental
frame, a plurality of upright coil springs mount
ed on said main frame, mechanism on the main
frame extending into said springs to prevent the 55
latter from moving laterally, means comprising
inverted cups with cylinders in their bottoms ex
tending into the tops of said springs to limit the
lateral movement of-said supplemental frame, a'
shaft journaled in said supplemental frame and 60
having eccentric mechanism for effecting gyra
tory vibration relative to‘ said main frame as
permitted by said springs, a screen on said sup
plemental frame having a material receiving end
at the front of said vehicle, a rotor aerator.
means for guiding screened material to said rotor '
aerator, and an inverted open bottomed chute
leading from said aerator to guide material rear
wardly from the rear end of the machine.
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