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Патент USA US2121486

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June 21, 1938.
Filled Jan. 22, 1937
lated` ,lune 2„ i938
norma AND Aorlwron
Glen G. Merchen,l Spolkana'Wash.
Application' January 22, 1937, serial No. 121,195
3 Claims.
(Cl. 259-20)
This invention relates to'an improved hopper
formed in the bottom of the hopper and a gate
and agitator of the type used in-connection with
6 for _this opening being mounted under the
hopper. The gate is slidably mounted for move
my copending application, Serial No. 22,641, filed i ment into and out of closing relation to the
ischarge opening and in order to shift the gate
5 May 21, 1935, patented July 2'1,4 1937, -No.
2,088,334 but it is to be understood that the there has been provided a shaft 8 carrying a pin
yhopper and improved agitating mechanism may lon 1 or a plurality of pinions, each of which
be used for feeding powdered or ground material meshes with a rack Scarried by the gate. The
in any other mechanism desired and that the shaft projects from one side of the casing and any
invention is not limited to the feeding of grain, desired means may be provided for manually
rotating the shaft and causing the gate. to be
flour» or the like to a scale.
One object of the invention is to provide the moved into or out of closing relation to thedischarge opening.
hopper with agit ting mechanism so con
The flour or other ground material is fed from
structed that po ,dered or ground material
a bin »or other container 9 into the hopper'
which is liable to cake in a hopper may be> thor'
a grain weighing scale such as illustrated in
oughly agitated and thus caused- to i'iow easily
through registering openings or passages of the -
and at an even rate of speed through an outletl
bin and hopper as shown in Figure 1 and it
at the bottom of the hopper.
should be noted that -walls of the bin converge'
Another object of the invention is to provide
agitating means consisting of companion mem
downwardly so that the material will be directed
towards the entrance of the hopper.' This pow
dered or ground material has a tendency to cake
bers mounted one in a hopper and the other in
a bin or >equivalent compartment over the hop - in the lower portion of the bin and also within
the-hopper and in order to break up the caked
. per, means being provided for transmitting m'o
tion from lione agitator to the other and the two material and cause it to pass easily from the
agitators thus caused to be actuated at the same bin into the hopper and then flow at a steady
time and the ground or powdered material thus rate from the hopperv through the outlet 4 and
kept thoroughly agitated and prevented from ' down upon the conveyor 3, there have been pro
failing to flow freely due to caking in -either vided an upper agitator III and a lower agitator
II, the agitator I0 being located inthe bin and
the hopper or the bin.
the agitator _Il in the hopper. These agitators v30
Another object of the invention is the provi
both operate at the -same `time and cause the
sion of agitating mechanism wherein a single
drive means is required, thus reducing the cost
of manufacture and also simplifying the con
struction and reducing the number of parts.
The invention is illustrated in the accompany
material to flow very freely during operation «of
the scale.
The agitator II which is mounted in the hop
ing drawing, wherein’
hopper axially thereof and has its end portions
Figure 1 is a view of the improved hopper and
agitating mechanism shown partially in side ele
per has a -shaft I2 which extends through the
journaled through bearings I3, as shown in Fig
ures 3 and 4', and projecting from the hopper
at opposite sides or ends thereof. A hollow hood
vation and partially in vertical section.
Figure 2 is a sectional view taken along the. or drum Il which is of arcuate or segmental 40
, form in cross section is formed with bearing
line 2--2 of Figure 1.
Figure 3 is a sectional _view taken along the sleeves I5 at its ends which> fit about and are
keyed to the shaft I2 and a cover I8 which is
line 3-3 of Figure 2.
formed with a shaft receiving portion I1 is se
Figure 4 is a view illustrating a lmodified con
cured in covering relation to the hood or drum
45 struction.
'I‘he hopper I has been shown at one end of by screws or equivalent fasteners I8. When so
the casing 2 of a scale and may be of the specific mounted the cover serves to prevent the ground
or powdered material from accumulating in the
construction illustrated in the copending applica
tion referred to Í’above or of any other desired hood and,` in addition, the cover provides fiat
50 construction wherein the flour or other 'ground surfaces extending from the shaft engaging por 50
material is to be delivered onto a conveyor 3 and tion I2 radially thereof and adapted to act upon
transported through the casing over weighing the material when the drum is rocked. Teeth
I9 are carried by the drum and may be either
-mechanism therein.: The hopper is of substan
tially cylindrical formation and disposed trans
versely of the casing, a discharge opening 4 being
pins, as shown in Figures l1, 2 and 3, or flatA
blades, as shown‘in Figure 4, where the teeth
are indicated by the numeral Il'. The teeth beinglnarrowed by the sidewalls 32 and 33 directs
are arranged in rows )extending longitudinally all material entering the hopper to first contact
the upper‘side or plate I6 of the agitator Il,
of the hood with the teeth of each row in stag
gered relation to teeth of adioining rows and ’ thus when the combined agitator and its pins are
are of such length that they extend from the not in motion they form a closure and prevent
the material from passing through the machine
hood or drum to adjacent the walls of -the hop
per. By so forming and arranging the teeth, until it is again agitated by the rocking oper
powdered or ground material in the hopper will
be thoroughly agitated and‘any lumps or caked
10 portions broken up during rocking of the drum
and the material will flow freely towards the
outlet at the bottom of the hopper. 'I'he nat
upper faces of the side portions of the cover~
Il exert upward and transverse thrust upon the
15 material during rocking of the drum and assist
in agitating the material in the upper portion
of the hopper.
In order to actuate the agitator I I and impart
rocking movement’to it, there has been provided
a crank arm or lever 20 which is keyed to one
projecting-end portion of the shaft I2 and has
I have, therefore, provided a hopper arranged
i,to receive powdered or ground material from a. 10
bin under which a hopper is mounted and pro
vided in the hopper and the bin improved agi
tating means for breaking up the material in
case it should form lumps or become packed in
the bin or hopper.
Having thus described the invention, what is
claimed as new is:
l. In a'structure of the character described, a
hopper having an inlet at itsy top and an outlet
at its bottom, a rocker shaft extending horizon 20
tally in said hopper and journaled through walls
pivoted to it a link or pitman 2I. The other end
of the link is pivoted to a crank arm 22 carried
of the hopper, a hollowl drum suspended from
said shaft having heads at its ends fixed to the
by a shaft 23 which is journaled through a sup
port 2l and at its other> end carries a pulley 25
aboutwhich is trained a belt 2i for transmitting
rotary motion to the shaft from a suitable source
jacent walls of the hopper, a removable cover
of power.
^ The upper agitator III which is mounted in the
bin 3 has a shaft 21 journaled through opposed
walls of the bin and within the bin this shaft
carries teeth 2l in the form of rods secured to
and extending radially from the- shaft so that
when the shaft is turned the teeth will act upon
the powdered or ground material in the bin and
thoroughly esitate it so that it will flow freely
from the bin into the hopper. One end of the
shaft 21 projects from the side wall of the bin
shaft to suspend the drum from the shaft, elon
gated teeth extending outwardly from said drum
towards Walls of the hopper and terminating ad
for said drum having aridge straddling the shaft
between heads of the drum and fiat side portions
for closing the drum extending from opposite 30
sides of theÁ ridge and secured 1along marginal
edges of walls of the drum in closing relation to
the drum, and means for imparting rocking
movement to said shaft.
_ 2. In a structure oi’ the character described, a
hopper having an outlet at its bottom, a rocker
shaft extending horizontally in said hopper and
journaled through walls thereof, a hollow drum
and carries a crank arm 29 to which is pivoted -suspended from said shaft within said hopper
the upper end of a link or pitman 3_3. The lower and having an arcuate wall, a cover for said
end of the link 3l is pivoted to a crank arm 3l drum having fiat portions extending between op
fixed to the shaft I2 at the opposite end thereof posite sides of the shaft and marginal edges, of
from the crank arm 2l, and from an inspection the arcuate wall, teeth radiating from the arcu
of Figure 1 it will be seen that during rocking .ate wall and terminating adjacent walls of the
hopper,- and means for imparting rocking mo
of the shaft I2 rocking motion will be transmit
tion to said shaft.
ted to the shaft 21. ‘Therefore the two agita
3. In a structure of the character described, a
tors will be operated at the same time and both
substantially cylindrical hopper extending hori
receive their motion from the shaft 23.
- To relieve the down pressure and weight of they zontally and having end walls and an annular
material in the upper bin from resting on the wall between the end walls constituting the bot
upper side of the agitator and thus causing the tom and side walls of the hopper, said hopper
having an inlet at its top and an outlet at its
agitator to lift the complete load during its op'
eration, also causing a strain on the machine and bottom, a rockerv shaft nextending horizontally
an overload on the motor. ~I have provided in in said hopper over the outlet and journaled
the upper end of the hopper I converging side through the end walls of the hopper, and agi 55
walls 32 and 33 which form a throat .34 at least tating means suspended from said shaft within
one third less -than the diameter of the hopper I the hopper and extending longitudinally therein
between end walls of the hopper and having an
at its center. inns construction forms anar
rowed opening in the upper part of the hopper annular wall disposed in spaced and substantially
and tends to hold back the load or pressure of parallel relation to the annular wall of the hop
the-material relieving the agitator II and per- - per and upper transversely sloping walls at op
posite sides of the shaft for exerting upward
mitting it to operate freely.
» Often material will become arced, in the bin thrust during rocking movement of the agitator,
’ and when it breaks it :aus with considerable and teeth extending outwardly from the annular
wall of the agitator and terminating adjacent
force flooding the weighing machine. This con
dition would be disastrous if- it were not for the the annular wall of the hopper.
simple yet effective design of the hopper I used
in combination with the agitator II. 'I‘he throat
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