Feb. 4, 1930. -
1,745,716
G. w. RYNDERS
HOPPER
Filed March 20, 1925
2 Sheets-Sheet
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INVENTOR
65mm W H/VMA’J.
BY
057.ATTORNEY
$2
Feb. 4, 1930.
1,745,716
G. w. RYNDERS
HOPPER
Filed March 20, 1925
2 Sheets-sheaf 73
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Patented Feb.‘ 4, ‘1930
1,745,716
fuNrrro f STATES PATIENT OFFICE
A‘
GEbBGE W. RYNDERS, on oARI’ENTEnsvILLE, ILLINOIS, ASSIGNOR r0 FAIRBANKS,
MORSE & 00., OF CHICAGO, ILLINOIS, A'CORPORATION 0F ILLINoIs
HOPPER
" e , Application ?led March 20, 1925.
Serial No. 17 003.
g 'Myinvention relates to improvements in the lower ‘part of the hopper, the bridging’
hoppers and more particularly to improve action becoming less in an ordinary or simple
,ments in hoppersto be used in conjunction hopper as the level of the corn in the hopper
l with feed-mills for grinding ear corn.
becomes lower. By introducing means in the
When employing the ordinaryv form of hop hopper for relieving the lower layers of corn 55
per for the purpose of feedingear corn to a of this super-inforced weight I prevent the
grinding mill the'tendency ‘is for the corn to
‘ wedge or “bridge” in the hopper, resulting in
“a clogged hopper, poor or intermittent feed
ing, and making it necessary to employ an ex
tra operator to keep the ear corn feeding prop
bridging of the corn and provide a hopper
which feeds the corn evenly and steadily to
the grinder. As a means for relieving this
‘super-imposed weight I prefer to employ av
60
baffle or a plurality of ba?ies such as those
erly. Heretofore various expedients have shown at 3 and 4 in Figs. 1 and 2, positioned
been employed to prevent this bridging, all within a hopper 5, which may be of any suit
of which in the form of mechanical agitators ' able size and shape. here shown as having a
requiring'gears, rods,"links, etc., whichadd top of rectangular shape with two of its op-r
1.15
65
to ‘the, danger of operating the machine, are posite sides sloping to form a bottom having
costly tomanufacture and maintain, require - a rectangular shape. The number of these
‘ additional power for theirpyoperatiom-and are
r V
.fonly partially successful, since the agitation
baffles employed depends upon the vertical
‘height of the hopper employed and, to some
of the earcorn does not- entirely prevent extent, upon the size of the ear corn to be‘
._ v“bridging”-or intermittent feeding and, in handled and while I show, in Figs. 1 and 2,
many cases, resultsin throwing the corn out two of these baffles I do not wish to. be limited
.
12,0,’
of the hopper when'operating at full capac- , to the use of any number of ba?ies. I have
ity. ‘ It is the object of my invention to pro found that in most cases one such baffle will
25 vide a hopper which will feed the ear corn
effectively prevent this bridging action in’ 75
- to the grinder in a steady-and regular manner hoppers of the ordinary size and when corn
‘ q
‘without bridging, without tending in any way of average length is being ground. By em
_ ‘to throw the cement of the hopper, and with- ' ploying two ba?ies in such a hopper, how
> out the use of mechanical ‘agitators or other ' ' ever, I ?nd that a more even ?ow of corn
‘ Q30 ~ devices requiring ‘additional‘power‘ for their through the hopper ‘results. The baffles 3 and» 80
' operation.
4 are preferably carried by the sloping sides
Another, object of myinventionis to pro 6 and 7, respectively, of hopper 5 and they
‘lvide a hopper for accomplishing the above re- ' may be attached thereto in any suitable man
1 sultswhich iseconomical to manufacture and ner such as by'bolting, welding or the like.
maintain and‘ which does not add to the dan It is evident that these baffles, 'materiallyi
1 v
_' ger of operating the. grinder.
strengthen the hopper itself and add to its
' 1 Further objects and advantages of my in
. (ventionwill appear from the following draw
useful life.
.
ingsand description thereof."
1
I prefer to form these ba?ies with a turned
over portion 8 so as to materially strengthen ,
Though ‘my invention consists largely in their construction. The relative dimensions‘
' {the construction‘ and ‘arrangement of parts andposition ofthese baf?es, both with respect
- J : <40?
ithereinaft'er ‘described and particularly point
to each other, when more than one baffle 1s
,ved outin the claims,yet I donot limit my in employed, and with respect to the dimensions
[vention to the precise form .or construction of the hopper, are very important and de
~45; oflparts shown" or the several ‘parts thereof, pend upon the dimensions of the material to
95
be ground. For example, I have foundpthat
- without changing the scope of'my invention. the perpendicular distance from the lower
inasmuch as various alterations may be made
This bridging action of ear, corn is due to' edge of the portion 8 of the lowest ba?ie 4 to
I
r o ; the'super-imposedv ‘weight- of the corn in the
a 50;
the plane of the opposite side of the hopper,
upper part of the hopper?upon the corn in here shown as side 6, and which dimension I‘
100
1,745,716
2 .
shall designate as dimension “A,” should be per additional ba?les would. be added in a'o-'
approximately equal to or greater than the cordance with the dimension “C” discussed
longest ears of corn to be ground. WVhen above. I have found, however, that with
more than one ba?ie is used, the distance from the average ear corn the most ei’?cient results
5 the upper edge of the portion 8 of one ba?ie are obtained with a two ba?le arrangement as 70
to the lower edge of the portion 8 of the next
higherba?le, which dimension I shall desig
nate as dimension “B,” should be approxi
mately equal to or greater than the longest‘
l0
shown in Figs. '1 and 2, and that decreasing
the height of the hopper materially decreases ‘
its capacity making more frequent replenish
ments necessary. Thewidth of the ba?ies is
‘ears of corn to be ground. . It will be evident 'evidently'more or less ?xed by the dimensions
that the turned-over portions 8' are not es ‘ “A,” “B,”‘“C,” the angle of inclination given
sential to my invention and in cases where, above, and the dimensions of the hopper,
such as the height, ?are, etc. So long as the
dimensions Awand B are not less than the
length of the ear corn to be ground the ?are
of the hopperimay be'incr-easedto any de
sirable value, since‘ the ‘dimensions Aand B
>may be increased above the minimum set
ba?ie, and the opposite side of the hopper, and still a?ord a steady and e?icient feed
such portions 8 are not employed I designate
dimension “A” as the perpendicular distance
between the innermost edge of the bottom
ba?‘le and the plane of'the opposite side of
thehopper, otherwise stated, it ‘is the short:
est distance between any given member or
15
20 and the dimension “B” as the shortest ‘dis
' tance between opposed members or ba?ies, or
without bridging.
~
'-
'
a. 8
In Figs. 3 and 4 I show a modi?ed form"
5
'the distance between the innermost edge of of my invention in which the baffles are
one ba?le’ and the innermost edge of the next formed by members 9' preferably having
higher baffle. When grinding the average their upper surfaces 10 sloping so as to give .
.25 run of corn which, I have found, normally the desired angle of inclination. The mem-f .90
has a length of from 9 to 91/2 inches, hoppers bers 9 are preferably heldy'in place by means I '
and ba?ies having the dimensions A and B of rods 11 fastened into the members at either
' 7 between 10 and 12 inches have proven to be end .7 in any suitable manner. These rods
very e?icient in preventing bridging and in maybe ‘made witha hook at one end,v as
shown, so as to hook over the edge of the395
.
v30 giving a regular flow of corn.
When more than one ba?le is employed I hopper 5, and are formed in suitable lengths
have found that the vertical distance be so as to position the members 9 within'the
tween one ba?ie and the next higher baffle hopper to give thedesired values of dimen- should be equal to or greater than the larg sions A, B and C as given above. The ends
est diameter of the largest corn to be ground. 12 of members 9 may be formed with a slopetgwo
This dimension I shall call dimension-“C” as shown, inorder thatthis‘ member may ?t
and designate it as the vertical distance be ,snugly against the sides of'hopper 5.»
In Fig. 5 I show another modi?ed form of
tween the‘ innermost edge of one ba?‘ie and
the innermost edge of'the next highest baf my invention in which baffles are formed by '
indentations 12 and '13 in the sides’ 6 and 7 ,~; (105
1 40-. ?e. I have found that underordinary condi
tions this ‘dimension should not be less than respectively, of hopper 5. These indentations >
2-1/2 inches.
*
'
'
' 12 and 13 are preferably formed so as to ‘have
In employing a plurality of ba?les the baf-_ . sloping surfaces 14 and 15 in order to give
?es are preferably alternately attached to the desired angle of inclination and are so ,
opposite sides of the hopper, the sloping sides positioned in the sides of- the ‘hopper thatggno ;
of‘ the hopper being the ones preferably em they will meet the requirements of dimen- '
'
1 50
ployed.
"
,
r
sions'A, B- and C given above.‘
1
I prefer to form my baffles with a down
While I show my baffles as‘being formed
ward slope-with respect to the‘ horizontal giV- ‘ with continuous surfaces it is evident that’ .
mg an angle of inclination, which would be. these ba?les may be formed with perforated: 115
theangle between the plane of the battle and
surfaces or that the ba?les may be formed. by ' '
' the horizontal, and I have found that this an arrangement of rods» fastened between
angle of inclination isfimportant in obtain the ends of the hopper. Such an arrange
ii 55
" 60
1
ing e?cient results since the greater this an
gle the less e?icient the baffle becomes tov pre
vent bridging. It would vappear that this
~angle of inclination should only be such as
ment of rods is shown in section in: Fig.’ 6
which also shows how the dimensionsA, B1120
and C would be determined. The innermost ‘
edge of the baffle thus formed by the rods 16" I j '
to prevent any material form lodging on the would evidently be the inner edge 17 of the
baflie, andshould not be greater than thirty inner rods. These-rods16 may be attached .1 i
degrees with the best result-sat 10 degrees for to the‘ ends of the hopper 57in any suitable:..-125> '
the majority of cases. i
>
r '
manner such as by‘ bolting, ‘etc. A number
By decreasing the height of the hopper of ways of constructing my'ba?ies, other than‘
. it will be" evident that the upper ba?ie shown those. shown here will be evident to‘those ,
in Figs. 1 and 2 may be'omitted and, con skilled in the art and I'do not wish to be lim- '
a5. versely, :by increasingthe height of the hop
ited to any particular form "of construction. £130 '7
1,745,716
, or arrangement since any type of ba?ie may
' be employed without departing from the
scope of my invention.
1
I claim:
>
1. In a hopper adapted to prevent bridg
ing, the combination of a plurality of mem- ‘
bers above a grinder, horizontally and ver
tically relatively widely spaced and so posi
tioned as to provide a relatively Wide vertical
10
passageway therebetween, said members be
ing adapted to support a substantial portion
of the hopper contents, and so separated from
' each other that an ear of corn Will not nor
mally rest upontwo inclined members.
2. In a hopper adapted to prevent bridg
ing, the combination of a plurality of bailies
above a grinder, horizontally and vertically
relatively Widely spaced,‘ and so positioned
' as to provide a relatively wide vertical pas
20
sageway therebetween, said baffles being
adapted to support a substantial portion of
the hopper contents, and so separated from
each other that an ear of corn will not nor
25
mally rest upon two inclined ba?les.
3. In aymachine for grinding ear corn, in
combination, a hopper having opposed sides,
and a plurality of battles positioned on the
opposed sides of said hopper, the inner edges
7 t
,
' > of said ba?ies being vertically and horizontal
30
1v relatively widely spaced from each other
' and from the opposite sides of said hopper
so that an ear of corn will not normally bridge
‘I from one ba?ie to another or from one ba?le
to the opposite side of said hopper.
35
4. In a hopper adapted to contain ear corn
andto prevent‘ bridging, a plurality of baf
?es located on the opposed sides of said hop
per, said battles being relatively widely spaced
I vertically and horizontally, the lower ba?ie
40
being substantially equally spaced from the
upper'bat?e‘and from the opposite side of
the hopper, thevertical spacing of the, bat?esv '
being not substantially less than one fourth
of the'horizontal spacing of the‘ same so
= that normally anear of corn'will notbridge
said ba?ies.
‘
"
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; GEORGE W. RYNDER‘S.
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