US622521A - Grain-drier - Google Patents

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US622521A
US622521A US622521DA US622521A US 622521 A US622521 A US 622521A US 622521D A US622521D A US 622521DA US 622521 A US622521 A US 622521A
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cylinder
grain
cylinders
pipe
space
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/12—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft
    • F26B17/122—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the material moving through a cross-flow of drying gas; the drying enclosure, e.g. shaft, consisting of substantially vertical, perforated walls

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  • rllhis invention relates to improvements in devices designed for use in drying grain, and particularly for drying wheat after it has been passed through a washing device for removing smut; and the objects I have in view are to provide a machine of this character having a large capacity and in which the wheat or other grain can be thoroughly dried in a short space of time, to provide a machine of this character that is readily pnt together or taken down when desired, and to provide a machine of this character in which the grain is first subjected to a current of hot air and then to a current of cold air and in which the passage of the grain into and from the machine is automatically regulated.
  • the invention consists generally in the constructions and ⁇ combinations hereinafter described, and particularly pointed ont in the claims.
  • Figure 1 is a vertical section of my improved machine.
  • Fig. 2 is a transverse section taken above the feedn regulating valve and showing the construction and arrangement of such valve.
  • Fig. 3 is a transverse section on line a: oc of Fig. 1, showing the angle irons arranged between the two cylinders for the purpose of properly spacing said cylinders.
  • Fig. 4. is a detail view ofthe removable cylinder.
  • Fig. 5 is a detail view showing the means for securing the edges of the removable cylinder after it has been placed in position in the device.
  • Fig. 6 is a transverse section on line 3./ yof Fig. 1, showing the pipes for conducting the cold air from the lower fan through the hopper and into the interior of the device.
  • Fig. 7 is a detail showing the preferable arrangement of the perforations that are provided in the inner and outer cylinders.
  • the device may be all arranged upon one floor or in any other suitable relation to the building in which it is located.
  • this cylinder is another cylinder' 7, preferably imperforate and provided with the angle-iron 8 near its lower end, and the end of the cylinder 7 preferably fits into the upper end of the cylinder 5, and the angle-iron 8 rests upon the top end of the cylinder 5, and thereby supports said cylinder in position.
  • the cylinder 7 is also preferably provided with the wire screen 9, extending transversely across it, and also with the regulating-valve, comprising the two curved pivoted plates 10, mounted upon rods or shafts 11, that are supported in bearings in the wall of the cylinder 7, and said plates are also pro- ⁇ vided with levers 12, connected by links 13 with an adjustable connecting-rod 14, which extends above the cylinder and has its upper end connected to the lever 15.
  • the opposite end of this lever is connected to the rod 1G, which extends to thelower end of the drier and is connected by means of a rod 17 with the discharge-valve 1S, located in a suitable spout 19, as shown in Fig. 1.
  • This valve is a-r-J ranged to automatically govern the flow of grain from the machine and is in turn automatically controlled by the valve-plates 10 10, as hereinafter described.
  • the cylinder 7 is preferably provided with a top 20, and this may'furnish a support for a bearing 21 for the lever 15.
  • a spout 22 is preferably arranged to conduct the grain to the center of erably extends to a point near the floor 3 and to a transverse head or partition 24, which is provided with a central opening and with a cover 25.
  • the cylinder 23 is preferably perm forated throughout its entire length, the perforations lbeing preferably of the form and arrangement shown in detail in Fig. 7, and
  • the cylinder 23 is of less diameter than the cylinder 5, so that a space, preferably an inch and a half, in the machine as actually constructed is left between the outer surface of the cylinder 23 and the inner surface of the cylinder 5, and for the purpose of holding these cylinders in the correct relation to each other I prefer to provide a series of vertical angle-iron strips 27, (see Fig. 3,) that are secured upon the inner surface of the cylinder 5 and extend in vertical lines between said cylinders 5 and 23, the length of these angleirons being substantially equal to the length of the cylinder 5.
  • the cylinder 23 is broken off at the center in Fig.
  • a fan 30 is preferably arranged in a suitable casing 3l and mounted, preferably, upon thefloor4 and near the cylinder 7.
  • the casing31 of this fan is provided with the exitspout 32, which is arranged opposite an opening in the cylinder 7, and a pipe 33 is arranged to slide on the pipe 32 and to make connection between said pipe 32 and the pipe-elbow 29, as shown in Fig. l of the drawings.
  • the pipe-elbow 29 may then be lifted off from the end of the cylinder 23, and the cylinder 5 and the cylinder 23 may then both be removed, preferably by lifting them up through the opening in the floor 4.
  • the cylinder 5 is preferably quite short, and below said cylinder, surrounding the cylinder 23, I prefer to arrange the removable cylinder 34;
  • This cylinder is preferably perforated throughout, and it is prefera-bly formed of galvanized sheet metal, so that it may be put around the cylinder 23, and it is then secured in position by having its edges brought together, as shown in Fig. 5, with angle-irons 35 placed upon the opposite sides ofsaid edges and bolts 3G put through said angle-irons and said edges of the cylinder.
  • the cylinder 37 is preferably substantially the same length as the cylinder 5, and the lower end of the cylinder 34 is carried around the upper end of said cylinder 37, as shown in Fig. 1 of the drawings.
  • the cylinder 37 is preferably short, extending only a short distance below the floor 3, and within it is arranged avertical series of angle-irons 39, corresponding to the angle-irons 27, arranged within the cylinder 5, as shown in Fig. 3 of the drawings.
  • a cylinder 40 Within the cylinder 37 is a cylinder 40, whose upper end,provided with an angle-iron 41,sup ports the division or head 24, and the lower end of the cylinder 40 rests upon a division or head42 at the lower end of the drier.
  • An outer cylinder 43 is arranged out-side of and below the cylinder 37 and out-side of the cylinder 40, and its lower endis supported upon an angle-iron or ring 44, that is arranged below the upper end of the imperforate cylinder 45, that rests upon the floor 2 and within which is arranged the hopper 4G, that discharges into the pipe 19.
  • the cylinder 45 is provided with the inlet-pipe 47, and the fan 4S, arranged in a suitable fan-casing 49, is provided with a discharge-pipe 59, and the pipe 51 is arranged to slide upon the discharge-pipe 50 and to make connection with the pipe 47.
  • Four upright pipes or tubes 52 extend from the space within the cylinder 45 and below the hopper 46 up through said hopper and through the head 42 into the space within the cylinder 40, as shown in Fig. 1 of the drawings.
  • the cylinder 43 is preferably constructed in the same manner as the cylinder 34 and is adapted to be placed in position and secured by having its edges connected by means of suitable angle-iron strips and bolts, as shown in detail in Fig. 5.
  • the cylinders 5, 23, 34, 37, 40, and 43 are all perforated, and the style of perforation that'I prefer is that shown in detail in Fig. 7 of the drawings, although it will be understood that I do not limit myself to any preferred style, arrangement, or size of perforations.
  • the operation of the device is as follows:
  • the valve 18 in the discharge-pipe 19 is normally closed, and the wheat or other grain passing through the spout 22 falls through the screen 9 and, passing down over the upper surface of the cone 28, enters the annular space between the upper cylinder 23 andthe outer upper cylinders 5 and 34, and thence passes on into the annular space between the lower cylinder 40 and the lower outer cylinders 37 and 43 and completely iills this space.
  • the fan 30 hot air is blown into the space within the upper cylinder 23, and this air passes out through the perforations in said cylinder, passes through the annular body of wheat between the cylinders, and escapes through the perforations in thecylinders 5 and 34. Cold air is blown into the space within the lower cylinder 40 and passes 'moved.
  • the annular space between the perforated cylinders is constantly filled with grain, and through this grain first the hot air and then the cold air is constantly passing, and thereby the grain is very rapidly dried, so that -when it passes out of the drier it is completely dried and may be passed at once to the milling machinery.
  • the machine may be readily taken apart or set up wherever or whenever desired.
  • the spout 22 is removed and the lever 15 is disconnected from the rod 16.
  • the upper cylinder 7, with the valve and screen 9, may then be lifted off.
  • the pipe 33 is then slipped back upon the pipe 32, and the cone 28 and pipe-elbow 29 can be lifted off the cylinder 23.
  • the cylinder 34 may then be removed and the cylinder 5 lifted out of the opening in the floor.
  • the cylinder 23 may then be lifted out.
  • the head 24 may then be re- The lower ⁇ cylinder 43 may then be removed.
  • the cylinder 37 may be lifted out of the opening in the floor.
  • the cylinder 4t may be lifted out of'the opening in the floor.
  • the pipe 5l may be slipped back upon the pipe 50 and disconnected from the pipe 47.
  • the cylinder 45 may then be removed and after that the hopper 46.
  • these operations are reversed, and the various parts may readily be put in place and connected in the manner herein shown and described.
  • inner and outer perforated 'cylinders arranged with an annularspace between them, atransverse division extending across said inner cylinder and dividing the space within said cylinders into two separate compartments, and means for forcing air into each of said com partments and permitting the same to esn cape through said perforated cylinders and through the body of grain contained in the annular space between said cylinders, for the purpose set forth.
  • a grain-drier comprising in combination, inner and outerperforated cylinders arranged with an annular space between them,a trans verse division extending across said inner cylinder and dividing the space within said cylinders into separate compart-m ents', means for forcing hot air into one of said compartments and means for forcing cold airinto the other compartment, whereby the air from both compartments is permitted to escape through the perforated cylinders and through the body of grain contained within the annular space between said cylinders, for the purpose set forth.
  • a grain-drier comprising in combination, upright inner and outer perforated cylinders arranged with an annular space between them, a transverse division extending across said inner cylinder and dividing the space within said cylinders into an upper and a lower compartment, means for feeding the grain by gravity into the annular space between said cylinders, means for forcing hot air into said upper compartment and means for forcing cold air into the lower compartment whereby said air is permitted to cscape through said perforated.
  • a graindrier comprising in combination,
  • valve located in said discharge-pipe, a valve located below the inlet-pipe comprising pivoted plates l0 and means supporting ⁇ the saine, and means connecting said valve with the valve in the discharge-pipe whereby the flow 'of grain from the drier is automatically regulated, substantially as described.
  • Agrain-drier comprisingin combination, upright, inner and outer perforated cylinders arrangedwith an annular space between them, means dividing the space within said cylinders into compartments, means for feeding grain by gravity into the annular space between said cylinders, and means for regulating ⁇ the flow of grain from said annular space whereby said space is kept full of grain I while the device is in operation, means for forcing hot air into one of said compartments and ineansfor forcing cold air into another compartment, whereby said air is permitted

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)

Description

No. 622,521. Patented Apr. 4, i899. J. Mcm-xmas..
GRAIN DRIEB.
(Application led Sept. 3, 1898.)
` 2 Sheets-Shee l.
(N0 Model.)
nu; ummm :evans co. moraumo.. wAsmNsTmn r Patented Apr. 4, l899. J. McDANlEL.
G R Al N D R E R.
(Application med sept. a, 189e.)
2 Sheets-Sweet 2.
(No Model.)
dame.; 726C Davie?,
Tm: News PETERS co, morn-mwa WASHINGTON. D C
' wrricn.
Arnnr i elAMES MCDANIEL, OF MINNEAPOLIS, MINNESOTA.
GRAIN-momen.
SPECIFICATION forming part of Letters Patent No. easei, dated April 4, Iseo.
Application I'lled September S, 1898. Serial No. 690,175. (No model.)
.To @ZZ whom t may con/cern:
Be it known that I, JAMES MCDANIEL, of Minneapolis, Hennepin county, Minnesota, have invented certain new and useful Improvements in Grain-Driers, of which the following is a specication.
rllhis invention relates to improvements in devices designed for use in drying grain, and particularly for drying wheat after it has been passed through a washing device for removing smut; and the objects I have in view are to provide a machine of this character having a large capacity and in which the wheat or other grain can be thoroughly dried in a short space of time, to provide a machine of this character that is readily pnt together or taken down when desired, and to provide a machine of this character in which the grain is first subjected to a current of hot air and then to a current of cold air and in which the passage of the grain into and from the machine is automatically regulated.
The invention consists generally in the constructions and `combinations hereinafter described, and particularly pointed ont in the claims.
ln the accompanying drawings, forminga part of this specification, Figure 1 is a vertical section of my improved machine. Fig. 2 is a transverse section taken above the feedn regulating valve and showing the construction and arrangement of such valve. Fig. 3 is a transverse section on line a: oc of Fig. 1, showing the angle irons arranged between the two cylinders for the purpose of properly spacing said cylinders. Fig. 4. is a detail view ofthe removable cylinder. Fig. 5 is a detail view showing the means for securing the edges of the removable cylinder after it has been placed in position in the device. Fig. 6 is a transverse section on line 3./ yof Fig. 1, showing the pipes for conducting the cold air from the lower fan through the hopper and into the interior of the device. Fig. 7 is a detail showing the preferable arrangement of the perforations that are provided in the inner and outer cylinders.
ln the drawings, 2, 3, and 4 represent the floors of the mill, elevator, or other building in which the device is placed, and, ashere l shown, the device is arranged to extend through three stories of the building, al-
though, if preferred, the device may be all arranged upon one floor or in any other suitable relation to the building in which it is located. A perforated cylinder 5 is provided near its upper end with a shoulder or angleiron 6, and this cylinder is preferably ar=s ranged to drop through the iioor 4,so as to have the angle-iron 6 rest upon said door and supporting said cylinder. Above this cylinder is another cylinder' 7, preferably imperforate and provided with the angle-iron 8 near its lower end, and the end of the cylinder 7 preferably fits into the upper end of the cylinder 5, and the angle-iron 8 rests upon the top end of the cylinder 5, and thereby supports said cylinder in position. The cylinder 7 is also preferably provided with the wire screen 9, extending transversely across it, and also with the regulating-valve, comprising the two curved pivoted plates 10, mounted upon rods or shafts 11, that are supported in bearings in the wall of the cylinder 7, and said plates are also pro-` vided with levers 12, connected by links 13 with an adjustable connecting-rod 14, which extends above the cylinder and has its upper end connected to the lever 15. The opposite end of this lever is connected to the rod 1G, which extends to thelower end of the drier and is connected by means of a rod 17 with the discharge-valve 1S, located in a suitable spout 19, as shown in Fig. 1. This valve is a-r-J ranged to automatically govern the flow of grain from the machine and is in turn automatically controlled by the valve-plates 10 10, as hereinafter described. The cylinder 7 is preferably provided with a top 20, and this may'furnish a support for a bearing 21 for the lever 15. A spout 22 is preferably arranged to conduct the grain to the center of erably extends to a point near the floor 3 and to a transverse head or partition 24, which is provided with a central opening and with a cover 25. The cylinder 23 is preferably perm forated throughout its entire length, the perforations lbeing preferably of the form and arrangement shown in detail in Fig. 7, and
IOO
it is provided at suitable intervals upon itsinner surface with the angle-iron rings 26, the lower one of which forms a bearing or rests upon the transverse partition 24. The cylinder 23 is of less diameter than the cylinder 5, so that a space, preferably an inch and a half, in the machine as actually constructed is left between the outer surface of the cylinder 23 and the inner surface of the cylinder 5, and for the purpose of holding these cylinders in the correct relation to each other I prefer to provide a series of vertical angle-iron strips 27, (see Fig. 3,) that are secured upon the inner surface of the cylinder 5 and extend in vertical lines between said cylinders 5 and 23, the length of these angleirons being substantially equal to the length of the cylinder 5. For convenience of illustration the cylinder 23 is broken off at the center in Fig. 1 of the drawings; but it will be understood that this cylinder in actual practice will be of considerable length and it may be of any desired length. Above the cylinder 23 and preferably fitting onto the upper end of said cylinder is a suitable cone 28, and to this is preferably secured the pipeelbow 29, the lower end of which is arranged centrally within the cylinder 23 when the cone 2S is in position, as shown in Fig. 1. The outer end of the elbow 29 is preferably just within the cylinder 7, as shown in Fig.
1. A fan 30 is preferably arranged in a suitable casing 3l and mounted, preferably, upon thefloor4 and near the cylinder 7. The casing31 of this fan is provided with the exitspout 32, which is arranged opposite an opening in the cylinder 7, and a pipe 33 is arranged to slide on the pipe 32 and to make connection between said pipe 32 and the pipe-elbow 29, as shown in Fig. l of the drawings. With this arrangement when itis desired to disconnect the fan from the drier the pipe 33 is slipped back onthe pipe 32 and is thereby disconnected from the pipe-elbow 29. lVhen the parts are in this position, the lever 15 being uncoupled from the rod 16, the cylinder 7 may be lifted off the cone 2S. The pipe-elbow 29 may then be lifted off from the end of the cylinder 23, and the cylinder 5 and the cylinder 23 may then both be removed, preferably by lifting them up through the opening in the floor 4. As above stated, the cylinder 5 is preferably quite short, and below said cylinder, surrounding the cylinder 23, I prefer to arrange the removable cylinder 34; This cylinderis preferably perforated throughout, and it is prefera-bly formed of galvanized sheet metal, so that it may be put around the cylinder 23, and it is then secured in position by having its edges brought together, as shown in Fig. 5, with angle-irons 35 placed upon the opposite sides ofsaid edges and bolts 3G put through said angle-irons and said edges of the cylinder. A cylinder 37 corresponding substantially to the cylinder 5, provided at its upper end with angle-irons 3S, is arranged below the cylinder23, and it is preferably supported by means of said angle-irons upon the floor 3, through which it extends. The cylinder 37 is preferably substantially the same length as the cylinder 5, and the lower end of the cylinder 34 is carried around the upper end of said cylinder 37, as shown in Fig. 1 of the drawings. The cylinder 37 is preferably short, extending only a short distance below the floor 3, and within it is arranged avertical series of angle-irons 39, corresponding to the angle-irons 27, arranged within the cylinder 5, as shown in Fig. 3 of the drawings. Within the cylinder 37 is a cylinder 40, whose upper end,provided with an angle-iron 41,sup ports the division or head 24, and the lower end of the cylinder 40 rests upon a division or head42 at the lower end of the drier. An outer cylinder 43 is arranged out-side of and below the cylinder 37 and out-side of the cylinder 40, and its lower endis supported upon an angle-iron or ring 44, that is arranged below the upper end of the imperforate cylinder 45, that rests upon the floor 2 and within which is arranged the hopper 4G, that discharges into the pipe 19. The cylinder 45 is provided with the inlet-pipe 47, and the fan 4S, arranged in a suitable fan-casing 49, is provided with a discharge-pipe 59, and the pipe 51 is arranged to slide upon the discharge-pipe 50 and to make connection with the pipe 47. Four upright pipes or tubes 52 extend from the space within the cylinder 45 and below the hopper 46 up through said hopper and through the head 42 into the space within the cylinder 40, as shown in Fig. 1 of the drawings. The cylinder 43 is preferably constructed in the same manner as the cylinder 34 and is adapted to be placed in position and secured by having its edges connected by means of suitable angle-iron strips and bolts, as shown in detail in Fig. 5.
The cylinders 5, 23, 34, 37, 40, and 43 are all perforated, and the style of perforation that'I prefer is that shown in detail in Fig. 7 of the drawings, although it will be understood that I do not limit myself to any preferred style, arrangement, or size of perforations.
The operation of the device is as follows: The valve 18 in the discharge-pipe 19 is normally closed, and the wheat or other grain passing through the spout 22 falls through the screen 9 and, passing down over the upper surface of the cone 28, enters the annular space between the upper cylinder 23 andthe outer upper cylinders 5 and 34, and thence passes on into the annular space between the lower cylinder 40 and the lower outer cylinders 37 and 43 and completely iills this space. By means ofthe fan 30 hot air is blown into the space within the upper cylinder 23, and this air passes out through the perforations in said cylinder, passes through the annular body of wheat between the cylinders, and escapes through the perforations in thecylinders 5 and 34. Cold air is blown into the space within the lower cylinder 40 and passes 'moved.
out through the perforations in said cylinder and through the annular body of wheat and escapes through the perforations in the cylinders 37 and 43. After this operation has gone on for a certain length of time the grain piling up on the cone 28 fills up the space below the valve 10 10, and the weight of the grain accummulating upon the upper surface of said valve swings the plates outward, thereby drawing down the rod 14, raising the rod 16, and opening the valve 13. The grain begins to run out through the pipe 19, and this continues until the lowering of the grain at the upper end of the drier permits the valve 10 10 to return to its normal position and closes the valve 1S. This operation is repeated so long as the grain iiowsinto the drier. It will thus be seen that the annular space between the perforated cylinders is constantly filled with grain, and through this grain first the hot air and then the cold air is constantly passing, and thereby the grain is very rapidly dried, so that -when it passes out of the drier it is completely dried and may be passed at once to the milling machinery.
It will also be noted that the machine may be readily taken apart or set up wherever or whenever desired. In order to take the machine apart, the spout 22 is removed and the lever 15 is disconnected from the rod 16. The upper cylinder 7, with the valve and screen 9, may then be lifted off. The pipe 33 is then slipped back upon the pipe 32, and the cone 28 and pipe-elbow 29 can be lifted off the cylinder 23. The cylinder 34 may then be removed and the cylinder 5 lifted out of the opening in the floor. The cylinder 23 may then be lifted out. The head 24 may then be re- The lower `cylinder 43 may then be removed. Then the cylinder 37 may be lifted out of the opening in the floor. Then the cylinder 4t) may be lifted out of'the opening in the floor. The pipe 5l may be slipped back upon the pipe 50 and disconnected from the pipe 47. The cylinder 45 may then be removed and after that the hopper 46. In setting up the device these operations are reversed, and the various parts may readily be put in place and connected in the manner herein shown and described.
I do not limit myself to the details of the construction herein shown and described, as it isv evident that the same may be varied in manyparticulars without departing from my invention.
llaving thus described my invention, I claim as new and desire to secure by Letters Patent- '1. A grain-drier,comprising in combination,
inner and outer perforated 'cylinders arranged with an annularspace between them, atransverse division extending across said inner cylinder and dividing the space within said cylinders into two separate compartments, and means for forcing air into each of said com partments and permitting the same to esn cape through said perforated cylinders and through the body of grain contained in the annular space between said cylinders, for the purpose set forth.
2. A grain-drier,comprising in combination, inner and outerperforated cylinders arranged with an annular space between them,a trans verse division extending across said inner cylinder and dividing the space within said cylinders into separate compart-m ents', means for forcing hot air into one of said compartments and means for forcing cold airinto the other compartment, whereby the air from both compartments is permitted to escape through the perforated cylinders and through the body of grain contained within the annular space between said cylinders, for the purpose set forth.
3. A grain-drier,comprising in combination, upright inner and outer perforated cylinders arranged with an annular space between them, a transverse division extending across said inner cylinder and dividing the space within said cylinders into an upper and a lower compartment, means for feeding the grain by gravity into the annular space between said cylinders, means for forcing hot air into said upper compartment and means for forcing cold air into the lower compartment whereby said air is permitted to cscape through said perforated. cylinders and through the body of grain contained within the annular space between said cylinders, for the purpose set forth.
4. A graindrier,-comprising in combination,
' upright inner and outer perforated cylinders arranged with an annular space between them, a transverse division extending across said inner cylinder and dividing the space within said cylinders into upper and lower compartments, means for feeding grain by gravity into the annular space between said cylinders, and means for regulating the flow of grain from said annular space whereby said space is kept full of grain while the device is in operation, means for forcing hot air into Said upper compartment and means for forcing cold air into said lower compartment, whereby said air is permitted to escape through said perforated cylinders and through the body of grain contained within the annular space between said cylinders, for the purpose set forth.
5. The combination,with the removable cylinders 5 and 7, of the removableperforated cylinder 23 arranged within the cylinn der 5, the outer removable cylinder 34, means for feeding grain into the annular space bef tween the inner cylinder 23 and the outer cylinders 5 and 34, and means for forcing air into the space within said cylinder 23, for the purpose set forth.
6. The combination, with the inner and outer perforated cylinders arranged with an annular space between them, means for feed-A ing grain into said annular space and means for forcing air into the space within the inner cylinder of the discharge-pipe, a suitable TOO IIO
valve located in said discharge-pipe, a valve located below the inlet-pipe comprising pivoted plates l0 and means supporting` the saine, and means connecting said valve with the valve in the discharge-pipe whereby the flow 'of grain from the drier is automatically regulated, substantially as described.
7. Agrain-drier,comprisingin combination, upright, inner and outer perforated cylinders arrangedwith an annular space between them, means dividing the space within said cylinders into compartments, means for feeding grain by gravity into the annular space between said cylinders, and means for regulating` the flow of grain from said annular space whereby said space is kept full of grain I while the device is in operation, means for forcing hot air into one of said compartments and ineansfor forcing cold air into another compartment, whereby said air is permitted
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2700830A (en) * 1950-09-15 1955-02-01 Mark A Wolfe Grain drier or the like
US2991559A (en) * 1957-10-16 1961-07-11 Harold W Pierpoint Grain drier

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2700830A (en) * 1950-09-15 1955-02-01 Mark A Wolfe Grain drier or the like
US2991559A (en) * 1957-10-16 1961-07-11 Harold W Pierpoint Grain drier

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