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Патент USA US3096174

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July 2, 1963
E. w. LANE
Filed Sept. 21, 1960
2 Sheets-Sheet 1
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July 2, 1963
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Filed Sept. 21, 1960
2 Sheets-Sheet 2
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Patented Julyrz, 1963
Eugene W. Lane, Kensal, N. Dak.
(27350 Base Line, Highland, Calif.)
Filed Sept. 21, 1960, Ser. No. 57,560
1 Claim. (Cl. 34-183)
My invention relates generally to grain drying devices
and more particularly to power operated devices of this
Still more speci?cally my invention relates to grain dry
ing attachments for internal combustion engine-equipped
tion to the shaft 9, a link chain 16 is shown as entrained
over the sprocket 15 and thence over ‘spoeket 17.
Sprocket 17 is driven by mechanism 17’ driving the grain
elevator 2' associated with the grain discharge conduit 2.
Such mechanism is conventional in nature with combine
equipment and therefore is not shown and described in
detail. Fast on the shaft 9 within the cylindrical drying
chamber 6 is a conventional helical ?ight screw conveyor
For a purpose which will hereinafter be explained in
detail, the screw conveyor 18 is provided with circum
ferentially spaced axially extended agitator-retarder blades
19 which span the fights thereof. As shown, the radially
outer limits of the agitator blades 19 cor-respond generally
the radially outer limits of the ?ights of the conveyor
The primary object of my invention is the provision of 15 to
whereas the radially inner edges 20 thereof are spaced
a grain dryer attachment of the type immediately above
from the shaft 9 and de?ne grain passages 21 therebe
grain harvesting and threshing machines, known as com
described which derives its source of power, as well as its
source of heat, from the internal combustion engine of the
The extended portion 14 associated with the drying
6 comprises an upwardly opening side wall 22
A still further object of my invention is the provision of 20 chamber
and said generally vertical end wall 13. The upper open
a device of the class above described which may be inter
end of the side wall 22 de?nes .and over?ow outlet 23,
posed in the grain discharge line of a combine in overlying
whereas, the lower wall thereof is provided with a normal
relationship to the storage hopper thereof, whereby the
ly closed clean-out door 24. The normal ‘discharge out
dried grain being discharged from the grain dryer is fed
let of grain from the drying chamber 6 is located in the
by gravity directly into the hopper.
end wall 13 above the shaft 9, but downwardly spaced
A still further object of my invention is the provision
with respect to the over?ow outlet 23, and is indicated
of a grain drying attachment of the class above described
by the numeral 25.
which is inexpensive to produce, is rugged and durable in
As shown particularly in FIGS. 2 and 4, a generally
construction, and is highly efdcient in its operation.
jacket 26, concentric with the drying chamber
A still further object of my invention is the provision of 30 cylindrical
6 but outwardly spaced with respect thereto, cooperates
a device or" the kind above described which is easy to
attach to and remove from a conventional combine.
The above and still further objects and advantages of
my invention will become apparent from the following
detailed speci?cation, appended claim and attached draw
with the drying chamber 6 to de?ne an annular plenum
27. Plenum 27 is airtight with the exception of its gas
inlet conduit 28 and the gas outlet conduit 29. As shown
particularly in FIG. 2, the gas inlet and outlet conduits
28, 29 are located in the end of plenum 27 adjacent the
grain inlet 7 and are in diametrically spaced relationship
Referring to the drawings wherein like characters indi
to each other, the gas inlet conduit 28 entering the lower
cate like parts throughout the several views:
portion of the plenum 27 at a position annularly displaced
FIG. 1 is a View in perspective of a conventional in
40 with respect to a vertical line drawn through the axis
ternal combustion engine equipped combine, showing my
thereof in the direction of rotation of the screw conveyor,
novel drying attachment in operative position thereon;
said direction being indicated by arrows in FIG. 4.
FIG. 2 is a view in side elevation of my novel grain
De?ning a serpentine path for gases passing through the
drying attachment, some parts being broken away and
plenum 2'7 are circumferentially spaced axially extended
some parts being shown in section;
baffle means 30, the particular arrangement of which is
FIG. 3 is a view in end elevation of the structure of
FIG. 2 as shown from left to right;
FIG. 4 is an enlarged view in vertical section as seen
designed to cause a maximum of the heated exhaust gases
entering the plenum 27 from the intake conduit 28 to be
impinged against the exterior surface 31 of the cylindrical
from the line 4—4 of FIG. 2;
heating chamber 6 immediately underlying the path which
‘FIG. 5 is a view in vertical section taken substantially 50 the majority of grain A within the drying chamber 6 is
on the line 5—~5 of FIG. 3; and
caused to assume by the screw conveyor 18 and the agita
FIG. 6 is an enlarged view in vertical section as seen
tor-retarder blades 19 carried thereby, again see partic
substantially from the line 6—6 of FIG. 2.
ularly FIG. 4. Speci?cally this arrangement is as fol
Referring with greater particularly to the drawings the
lows: On opposite sides of the gas inlet conduit 28 are
numeral 1 indicates in its entirety a conventional combine 55 ba?les 32 and 33, the former of which abuts at its inner
the grain discharge conduit of which is identi?ed by the
end against the end wall 34 of the plenum 27 and the
numeral 2, the grain storage hopper by the numeral 3,
latter of which is spaced from the end wall 34 to de?ne
and the internal combustion engine thereof by the nu
therebetween and said end wall an air passage 35. In
meral 4.
like manner each alternate ba?le 30 is spaced from an
My novel grain drying attachment is identi?ed in its
opposite end wall 36 of the plenum 27 whereby, as above
entirety by the numeral 5 and includes a horizontally dis
indicated, a serpentine path for the gases passing through
posed cylindrical drying chamber 6 which is provided with
a radially opening grain inlet 7 adapted to have telescop~
ing relationship with the lower end 8 of the discharge con
duit or leg 2 of the combine 1. Extending axially through
the cylindrical drying chamber 6 is a rotary shaft 9, one
end of which is journalled in a suitable bearing 10 in
the inner end wall 11 and the opposite end of which is
the plenum 27 is de?ned, each ?ight of said path being
from end wall to end Wall thereof. The speci?c arrange
ment, of course, splits the gas into separate streams going
in opposite directions about the plenum until the discharge
passage 29 is reached. However, it is obvious that the
greatest ‘amount ‘of heat is caused to impinge upon the
exterior surface 31 of the heating chamber 6 immediately
underlying the path of travel of the grain A therethrough,
extended portion 14 of the drying chamber 6. At its 70 as above described.
journalled as at 12 in the outer end wall 13 of an axially
extreme inner end the shaft 9 is provided with a sprocket
15 which is made fast thereon. In order to impart rota
As shown in FIG. 1, a source of hot gas for passage
through the plenum 27, for the purpose of imparting heat
to the walls of the drying chamber 6, is derived from the
exhaust pipe 37 of the internal ‘combustion engine 4, same
being connected to the gas inlet conduit 28. Gas from
What I claim is:
A grain dryer for use with an internal combustion
the outlet conduit 29, andpthe other hand, is discharged to
atmosphere by an extension pipe 38.
engine-equipped combine, said dryer comprising a hori
zontally disposed cylindrical drying chamber adapted to
be interposed in the grain discharge line of said combine,
a screw conveyor extending ‘axially through said drying
chamber and journalled for rotation with respect thereto,
a radially inwardly opening grain inlet adjacent one end
a of said drying chamber, a generally cylindrical jacket in
screw conveyor 18 and the agitator-retarder blades v19. 10 outwardly spaced concentric relation to said drying cham
The blades 19 not only tend to retard the progress of the
ber and de?ning therewith an axially elongated annular
Grain A entering the heating chamber 6 through the
grain inlet 7 is rotated in a clockwise direction by the
grain A through the chamber 6 but tend to retain same
in contact with the wall thereof in the area of greatest heat
concentration. The path of travel of the grain A through
plenum, a gas inlet communicating with the lower end
of said plenum in the end thereof adjacent the grain inlet,
a diametrically opposed gas outlet leading from said
The 15 plenum, axially extended circumferentially spaced ba?i'le
heated and dried grain being discharged from the outlet
means within said plenum de?ning a serpentine path for
end of the drying chamber 6 is caused to gather in the
gasses passing from said gas inlet to said gas outlet, said
extended portion 14- in order to further retard passage
drying chamber being axially extended at its discharge
the chamber 6 is substantially that shown in FIG. 4.
of the grain through the drying chamber 6, the grain dis
end beyond said screw conveyor and including an up
charge outlet 25 in the wall 13 is positioned ‘above the 20 wardly opening overflow-outlet de?ning side Wall and a
level of the shaft 9. In view of the fact that, as shown
generally vertical end Wall, said end wall de?ning an
in FIG. 1, my novel dryer overlies the open-topped storage
axially directed normal grain outlet above the axis of
hopper 3, grain A being discharged from the outlet 25
rotation of said screw conveyor, but below the lower limits
falls into the hopper 3 under the action of gravity. In
of said over?ow outlet, the lower portion of said side wall
the event of too great a supply of grain A being fed into 25 ‘being formed to de?ne a clean-out door.
the drying chamber 6, the same may accumulate in the
extended portion 14 faster than can be discharged from
References (Iited in the ?le of this patent ‘
the outlet 25. In this case such grain may over?ow
through the opening 23. Obviously, when it ‘is desired
to completely clean out the grain accumulated in the 3 O
Hellyer ______________ __ July 17, 1906
' extended portion l4ethe clean-out door 24 may be utilized.
Normandeau ________ __ Feb. 25, 1930
My invention has been thoroughly tested and found to
be entirely satisfactory for the accomplishment of the
Wilcoxson ____________ __ May 17, 1932
Annis _______________ __ July 26, 1960
above objects and while I have shown a preferred embodi
ment thereof, I Wish it to be understood that same is
capable of modi?cation without departure from the scope
and spirit of the appended claim.
Germany ____________ __ Nov. 18, 1879
Great Britain ________ __ Aug. 29, 1910
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