CA1179567A - Chaff spreader for combine harvester - Google Patents
Chaff spreader for combine harvesterInfo
- Publication number
- CA1179567A CA1179567A CA000421476A CA421476A CA1179567A CA 1179567 A CA1179567 A CA 1179567A CA 000421476 A CA000421476 A CA 000421476A CA 421476 A CA421476 A CA 421476A CA 1179567 A CA1179567 A CA 1179567A
- Authority
- CA
- Canada
- Prior art keywords
- chaff
- housing
- machine
- fan
- blade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F12/00—Parts or details of threshing apparatus
- A01F12/40—Arrangements of straw crushers or cutters
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Threshing Machine Elements (AREA)
Abstract
"CHAFF SPREADER FOR COMBINE HARVESTERS"
ABSTRACT OF THE DISCLOSURE
Apparatus for spreading chaff includes brackets for mounting the apparatus beneath and rearwardly of the cleaning shoe of a combine or other grain threshing machine and separately of any straw chopping and spreading appara-tus provided adjacent the straw discharge opening. The apparatus comprises a pair of fans rotatable in a horizontal plane above a base plate and upstanding walls defining hous-ings around the fans and discharge nozzles extending to the sides of the apparatus to discharge the chaff from each fan in a sideward direction and to substantially prevent dis-charge of chaff rearwardly of the apparatus.
ABSTRACT OF THE DISCLOSURE
Apparatus for spreading chaff includes brackets for mounting the apparatus beneath and rearwardly of the cleaning shoe of a combine or other grain threshing machine and separately of any straw chopping and spreading appara-tus provided adjacent the straw discharge opening. The apparatus comprises a pair of fans rotatable in a horizontal plane above a base plate and upstanding walls defining hous-ings around the fans and discharge nozzles extending to the sides of the apparatus to discharge the chaff from each fan in a sideward direction and to substantially prevent dis-charge of chaff rearwardly of the apparatus.
Description
t7~ 7 "CHAFF SPREADER FOR COMBINE HARVESTER"
BACKGROUNV OF THE INVENTION
This invention relates to apparatus for spreading chaff discharged from a combine harvesting apparatus or similar grain threshing machine. Many combines include a cleaning shoe at which chaff is discharged at a position spaced from the discharge of straw. Many different types of apparatus have been proposed for use at the straw dis-charge of such a combine for chopping the straw and spread-ing it relative to the rear of the combine. One class of such straw spreaders includes rotating blades which act to chop the straw and at the same time discharge it radially.
However these apparatus are unsuitable for use in spreading chaff discharged from the cleaning shoe and have never been used in the area of the chaff discharge. General-ly chaff has been allowed to discharge directly behind the combine and attention has only been applied to the straw discharge with devices available to chop and spread the straw or to swath the straw for later collection.
SUMMARY OF THE INVENTION
It is one object of the invention therefore to provide a chaff spreading apparatus for a combine which is simple and can be readily fixed to a combine for spreading the chaff to either side of the combine.
The invention therefore according to a first as-pect provides a chaff spreading apparatus for a grain 7~5~7 threshing machine having a cleaning shoe from which chaff is discharged, the apparatus comprising a housing in the form of a flat substantially horizontal plate and walls upstanding from the plate, means for attaching the housing to the threshing machine below the cleaning shoe to receive chaff therefrom, blade means, means mounting the blade means - on the housing for rotation relative to the housing in a plane parallèl thereto about an axis at right angles thereto to eject the chaff from the housing and direction-al discharge means defined by said upstanding walls of the housing and arranged to direct the chaff from the housing to at least one side of the threshing machine.
It is one advantage of the invention that the apparatus allows chaff to be spread evenly across the field which reduces or eliminates the problems of uneven tillage depth and depth of seeding and the yellow strips of crop usually associated with stubble crops due to lack of nitrogen.
A further advantage of the invention that there :; . , can be provided two fans each ejecting through a direction-al discharge nozzle to a respective side of the combine or grain threshing machine thus allowing the apparatus to spread the chaff to both sides of the machine over a wide area.
It is a yet further advantage of the invention that it can be used to spread the chaff independently of whether the straw is chopped and spread or is swathed and independently of whether apparatus for such use is provided on the combine.
It is a yet further advantage of the invention that the fans can include slightly curved blades which act to develop suction to draw the chaff into the blades for ejectiOn radially of the blades. In view of the low speeds and low suction required the suction does not interfere with air currents within the combine and thus does not affect the efficiency or capacity of the combine.
Itis a still further advantage of the invention that it comprises a simple flat base with housings defined around the fans and providing any directional discharge nozzles defined by upstanding walls from the flat base.
With the foregoing in view, and other advantages as will become apparent to those skilled in the art to which this invention relates as this specification proceeds, the invention is herein described by reference to the ac-companying drawings forming a part hereof, which includes '7~ 5~ ~
a description of the best mode known to the applicant and of the preferred typical embodiment of the principles of the present invention, in which:
DESCRIPTION OF THE DRAWINGS
Figure 1 is an isometric view of a chaff spread-ing appratus according to the invention.
Figure 2 is a side elevational view of the ap-paratus of Figure 1 attached to a combine.
Figure 3 is an exploded isometric view of the apparatus of Figure 1.
Figure 4 is a schematic side elevation of a com-bine incorporating the apparatus.
In the drawings like characters of reference indicate corresponding parts in the different figures.
DETAILED DESCRIPTION
Referring generally to Figures 1, 2 and 3, the chaff spreading apparatus comprises a frame 10 of welded angle iron, tubular steel or other suitable material, form-ing a rectangular structure with a cross member 1l extend-ing from one side to the other. On top of the frame 10 is supported a flat sheet 12 of mild steel with turned down edges to match the edges of the frame 10. Upstanding straps, hangers or supports 13 are provided at the rear edge of the frame 10 and forwardly extending tubular, angle iron ~1'7~5~t7 or other suitable supports 14 are attached to the front edge of the frame 10 for supporting the apparatus on the combine as shown in Figures 2 and 4 and explained in fur ther detail hereinafter.
The cross member 11 includes downwardly depend-ing extensions 111 which provide bushings 112 for support-ing a shaft 113 and pulley wheel 114. The shaft 113 ex-tends horizontally with the pulley 114 projecting from one or both sides of the frame 10. The cross member 11 also carries bushings 115 which are arranged in two pairs so as to support axles 116 which extend vertically upwardly through holes provided in the plate 12. Cooperating bevel gears 117 are arranged to communicate drive from the pulley 114 through shaft 113 to the shafts 116 whereby they are driven in synchronism.
Upon each of the shafts 116 is mounted a fan 15 comprising a central casting 151 which surrounds the shaft 116 and incorporates means (not shown) for securing the casting to the shaft and portions extending mutually at right angles for supporting four blades 152. Each blade i5 secured to the casting by screws, bolts or rivets and extends straight out from the casting so that the four blades lie mutually at right angles. The upper sur-face 153 of each of the blades is bent forwardly out of 3L~'7~5~'7 the plane of the blade so that as the fan is rotated the portion 153 tends to develop a downward suction with the air drawn into the fan being ejected radially of the blades 152.
It will be noted that as viewed from the rear the lefthand shaft 116 rotates clockwise and the right-hand shaft rotates counterclockwise in view of the arrange-ment of the bevel gears 117. The fans 15 are positioned on the shafts 116 such that the blades slightly intersect in their motion and such that they rotate slightly out of phase to avoid contact between the blades. In this way the blades sweep the upper surface of the plate 12 with no dead space between the blades.
A housing is defined around the fans 15 by two upstanding walls 16 and 17 each of which is formed by a curved sheet having a small flange at right angles and arranged at the base for securing the wall to the sheet 12. Generally the walls define two circular housings sur-rounding the tips of the blades 152 with a space interme-diate the two fans 15 to allow the blades to intersect as explained previously. The rear wall 16 extends from the portion surrounding the respective Ean substantially tangentially to the fan so as to define one side of a directional discharge nozzle 161. The other side of the 5`~
~- 7 -nozzle 161 is defined by a portion of the wall 17 parallel to the tangential portion of the wall 16 and extending outwardly from the circle defined by the tips of the blades 152. Each of the directional discharge nozzles 161, there--fore, directs material or air carried by the fans 15 to the sides of the apparatus and prevents or substantially pre-vents material from being ejected forwardly or rearwardly of the apparatus.
As can be best seen from Figure 2, the rear wall 16 is substantially higher than the front wall 17 and cooperates with a curtain 18 which extends downwardly from the body of the combine so that wa].l 16 and the cur-tain 18 act to confine chaff ejected from the combine and directed onto the fans 15 between the walls 16 and 17.
This is aided by the suction developed by the fans 15 A
triangular upstanding portion 171 bridges the portion on the wall 17 between the two fans so as to direct material falling outside the scope of the fan blades into the fan blades.
A pair of bumper straps 19 is provided on the frame 10 depending from the rear of the sides to provide protection for the apparatus both in use and during trans-port.
In use of the apparatus and as shown in Figures 7~5i~l7
BACKGROUNV OF THE INVENTION
This invention relates to apparatus for spreading chaff discharged from a combine harvesting apparatus or similar grain threshing machine. Many combines include a cleaning shoe at which chaff is discharged at a position spaced from the discharge of straw. Many different types of apparatus have been proposed for use at the straw dis-charge of such a combine for chopping the straw and spread-ing it relative to the rear of the combine. One class of such straw spreaders includes rotating blades which act to chop the straw and at the same time discharge it radially.
However these apparatus are unsuitable for use in spreading chaff discharged from the cleaning shoe and have never been used in the area of the chaff discharge. General-ly chaff has been allowed to discharge directly behind the combine and attention has only been applied to the straw discharge with devices available to chop and spread the straw or to swath the straw for later collection.
SUMMARY OF THE INVENTION
It is one object of the invention therefore to provide a chaff spreading apparatus for a combine which is simple and can be readily fixed to a combine for spreading the chaff to either side of the combine.
The invention therefore according to a first as-pect provides a chaff spreading apparatus for a grain 7~5~7 threshing machine having a cleaning shoe from which chaff is discharged, the apparatus comprising a housing in the form of a flat substantially horizontal plate and walls upstanding from the plate, means for attaching the housing to the threshing machine below the cleaning shoe to receive chaff therefrom, blade means, means mounting the blade means - on the housing for rotation relative to the housing in a plane parallèl thereto about an axis at right angles thereto to eject the chaff from the housing and direction-al discharge means defined by said upstanding walls of the housing and arranged to direct the chaff from the housing to at least one side of the threshing machine.
It is one advantage of the invention that the apparatus allows chaff to be spread evenly across the field which reduces or eliminates the problems of uneven tillage depth and depth of seeding and the yellow strips of crop usually associated with stubble crops due to lack of nitrogen.
A further advantage of the invention that there :; . , can be provided two fans each ejecting through a direction-al discharge nozzle to a respective side of the combine or grain threshing machine thus allowing the apparatus to spread the chaff to both sides of the machine over a wide area.
It is a yet further advantage of the invention that it can be used to spread the chaff independently of whether the straw is chopped and spread or is swathed and independently of whether apparatus for such use is provided on the combine.
It is a yet further advantage of the invention that the fans can include slightly curved blades which act to develop suction to draw the chaff into the blades for ejectiOn radially of the blades. In view of the low speeds and low suction required the suction does not interfere with air currents within the combine and thus does not affect the efficiency or capacity of the combine.
Itis a still further advantage of the invention that it comprises a simple flat base with housings defined around the fans and providing any directional discharge nozzles defined by upstanding walls from the flat base.
With the foregoing in view, and other advantages as will become apparent to those skilled in the art to which this invention relates as this specification proceeds, the invention is herein described by reference to the ac-companying drawings forming a part hereof, which includes '7~ 5~ ~
a description of the best mode known to the applicant and of the preferred typical embodiment of the principles of the present invention, in which:
DESCRIPTION OF THE DRAWINGS
Figure 1 is an isometric view of a chaff spread-ing appratus according to the invention.
Figure 2 is a side elevational view of the ap-paratus of Figure 1 attached to a combine.
Figure 3 is an exploded isometric view of the apparatus of Figure 1.
Figure 4 is a schematic side elevation of a com-bine incorporating the apparatus.
In the drawings like characters of reference indicate corresponding parts in the different figures.
DETAILED DESCRIPTION
Referring generally to Figures 1, 2 and 3, the chaff spreading apparatus comprises a frame 10 of welded angle iron, tubular steel or other suitable material, form-ing a rectangular structure with a cross member 1l extend-ing from one side to the other. On top of the frame 10 is supported a flat sheet 12 of mild steel with turned down edges to match the edges of the frame 10. Upstanding straps, hangers or supports 13 are provided at the rear edge of the frame 10 and forwardly extending tubular, angle iron ~1'7~5~t7 or other suitable supports 14 are attached to the front edge of the frame 10 for supporting the apparatus on the combine as shown in Figures 2 and 4 and explained in fur ther detail hereinafter.
The cross member 11 includes downwardly depend-ing extensions 111 which provide bushings 112 for support-ing a shaft 113 and pulley wheel 114. The shaft 113 ex-tends horizontally with the pulley 114 projecting from one or both sides of the frame 10. The cross member 11 also carries bushings 115 which are arranged in two pairs so as to support axles 116 which extend vertically upwardly through holes provided in the plate 12. Cooperating bevel gears 117 are arranged to communicate drive from the pulley 114 through shaft 113 to the shafts 116 whereby they are driven in synchronism.
Upon each of the shafts 116 is mounted a fan 15 comprising a central casting 151 which surrounds the shaft 116 and incorporates means (not shown) for securing the casting to the shaft and portions extending mutually at right angles for supporting four blades 152. Each blade i5 secured to the casting by screws, bolts or rivets and extends straight out from the casting so that the four blades lie mutually at right angles. The upper sur-face 153 of each of the blades is bent forwardly out of 3L~'7~5~'7 the plane of the blade so that as the fan is rotated the portion 153 tends to develop a downward suction with the air drawn into the fan being ejected radially of the blades 152.
It will be noted that as viewed from the rear the lefthand shaft 116 rotates clockwise and the right-hand shaft rotates counterclockwise in view of the arrange-ment of the bevel gears 117. The fans 15 are positioned on the shafts 116 such that the blades slightly intersect in their motion and such that they rotate slightly out of phase to avoid contact between the blades. In this way the blades sweep the upper surface of the plate 12 with no dead space between the blades.
A housing is defined around the fans 15 by two upstanding walls 16 and 17 each of which is formed by a curved sheet having a small flange at right angles and arranged at the base for securing the wall to the sheet 12. Generally the walls define two circular housings sur-rounding the tips of the blades 152 with a space interme-diate the two fans 15 to allow the blades to intersect as explained previously. The rear wall 16 extends from the portion surrounding the respective Ean substantially tangentially to the fan so as to define one side of a directional discharge nozzle 161. The other side of the 5`~
~- 7 -nozzle 161 is defined by a portion of the wall 17 parallel to the tangential portion of the wall 16 and extending outwardly from the circle defined by the tips of the blades 152. Each of the directional discharge nozzles 161, there--fore, directs material or air carried by the fans 15 to the sides of the apparatus and prevents or substantially pre-vents material from being ejected forwardly or rearwardly of the apparatus.
As can be best seen from Figure 2, the rear wall 16 is substantially higher than the front wall 17 and cooperates with a curtain 18 which extends downwardly from the body of the combine so that wa].l 16 and the cur-tain 18 act to confine chaff ejected from the combine and directed onto the fans 15 between the walls 16 and 17.
This is aided by the suction developed by the fans 15 A
triangular upstanding portion 171 bridges the portion on the wall 17 between the two fans so as to direct material falling outside the scope of the fan blades into the fan blades.
A pair of bumper straps 19 is provided on the frame 10 depending from the rear of the sides to provide protection for the apparatus both in use and during trans-port.
In use of the apparatus and as shown in Figures 7~5i~l7
2 and 4, the apparatus is attached by the straps, hangers or supports 13 and by the member 14 to the body of the com-bine. The straps, hangers or supports 13 are attached to the body in the area beneath the straw walkers and the members 14 are attached at the rear of the cleaning shoe area so that the fan housings and fans are positioned generally rearwardly and beneath the outlet of the clean-ing shoe sche~atically indicated at 20. The straw walkers are schematically indicated at 21 with a straw chopping device indicated schematically at 22. The remainder of the combine shown in Figure 4 will not be described as it is of conventional construction.
The pulley 114 is driven via a belt 115 by a pulley 23 mounted upon the return (tailings) auger shaft.
Tensioning of the belt 115 is provided by a pair of pulleys 116, 117 with the latter mounted on the frame of the com-bine adjacent the auger and with the former mounted upon a strap 118 pivotally mounted relative to the pulley 117 and biased in a belt tensioning direction by a spring 119.
The sizes of the pulleys 114 and 23 are chosen such that the fans 15 are driven at a speed of the order of 250 rpm.
This relatively slow speed provides sufficient suction to draw chaff discharges from the cleaning shoe 20 into the fans 15 while avoiding excessive air streams which inter-fere with the air streams within the combine and thus with the separation of the chaff from the grain. The rear wall 16, the curtain 18 and the front wall 17 coact to direct most of the chaff discharged from the shoe 20 into the fans 15 from which position the chaff is directed radially of the fan blades through the directional discharge nozzles 161 and thus to the sides of the spreader apparatus. The apparatus effectively prevents chaff from discharging rear-wardly of the shoe 20 to ensure a even spread of the chaff across the field from the discharge nozzles 161.
The drive for the pulley 114 may in an alterna-tive arrangment (not shown) be taken from the rear straw walker crank with suitable belt tensioning arrangment being provided similar to that shown. In either arrangment the drive to the chaff spreader apparatus is inde?endent of the drive to the straw chopper 22 and to the drive to a g straw spreader apparatus schematically indicated at 23. In this way the chaff can be spread independently of the re-quirement of the operative to chop and spread the straw or to swath the straw.
In order to accommodate different processing con-ditions of the combine, the mounting brackets 13 and 14 may be provided with means (not shown) for adjustably mounting the apparatus on the body of the combine so that the posi-tion of the fans relative to the discharge of the shoe 20 can be adjusted to maximize the collection and spreading of the chaff.
Since various modifications can be made in my in-vention as hereinabove described, and many apparently wide-ly different embodiments of same made within the spirit and scope of the claims without departing from such spirit and scope, lt is intended that all matter contained in the accompanying specification shall be interpreted as illustra-tive only and not in a limiting sense.
The pulley 114 is driven via a belt 115 by a pulley 23 mounted upon the return (tailings) auger shaft.
Tensioning of the belt 115 is provided by a pair of pulleys 116, 117 with the latter mounted on the frame of the com-bine adjacent the auger and with the former mounted upon a strap 118 pivotally mounted relative to the pulley 117 and biased in a belt tensioning direction by a spring 119.
The sizes of the pulleys 114 and 23 are chosen such that the fans 15 are driven at a speed of the order of 250 rpm.
This relatively slow speed provides sufficient suction to draw chaff discharges from the cleaning shoe 20 into the fans 15 while avoiding excessive air streams which inter-fere with the air streams within the combine and thus with the separation of the chaff from the grain. The rear wall 16, the curtain 18 and the front wall 17 coact to direct most of the chaff discharged from the shoe 20 into the fans 15 from which position the chaff is directed radially of the fan blades through the directional discharge nozzles 161 and thus to the sides of the spreader apparatus. The apparatus effectively prevents chaff from discharging rear-wardly of the shoe 20 to ensure a even spread of the chaff across the field from the discharge nozzles 161.
The drive for the pulley 114 may in an alterna-tive arrangment (not shown) be taken from the rear straw walker crank with suitable belt tensioning arrangment being provided similar to that shown. In either arrangment the drive to the chaff spreader apparatus is inde?endent of the drive to the straw chopper 22 and to the drive to a g straw spreader apparatus schematically indicated at 23. In this way the chaff can be spread independently of the re-quirement of the operative to chop and spread the straw or to swath the straw.
In order to accommodate different processing con-ditions of the combine, the mounting brackets 13 and 14 may be provided with means (not shown) for adjustably mounting the apparatus on the body of the combine so that the posi-tion of the fans relative to the discharge of the shoe 20 can be adjusted to maximize the collection and spreading of the chaff.
Since various modifications can be made in my in-vention as hereinabove described, and many apparently wide-ly different embodiments of same made within the spirit and scope of the claims without departing from such spirit and scope, lt is intended that all matter contained in the accompanying specification shall be interpreted as illustra-tive only and not in a limiting sense.
Claims
CLAIMS:
(1) A chaff spreading apparatus for a grain threshing machine having a cleaning shoe from which chaff is discharged, the apparatus comprising a housing in the form of a flat substantially horizontal plate and walls upstanding from the plate, means for attaching the hous-ing to the threshing machine below the cleaning shoe to receive chaff therefrom, blade means, means mounting the blade means on the housing for rotation relative to the housing in a plane parallel thereto about an axis at right angles thereto to eject the chaff from the housing and directional discharge means defined by said upstanding walls of the housing and arranged to direct the chaff from the housing to at least one side of the threshing machine.
(2) Apparatus according to Claim 1 wherein the directional discharge means includes means defining a nozzle confining the ejection of the chaff solely to the side of the apparatus.
(3) Apparatus according to Claim 1 wherein the directional discharge means is arranged to direct the chaff from the housing to both sides of the threshing machine.
(4) Apparatus according to Claim 1 including a first and a second fan rotatably mounted on the housing, the directional discharge means being arranged such that one of the fans ejects chaff from the housing to one side of the machine and the other fan directs chaff to the other side of the machine.
(5) Apparatus according to Claim 1 wherein each blade of the fan means is curved so as to develop a suction drawing chaff into the housing and wherein the housing is arranged such that the chaff is ejected from the tips of the fan means.
(6) Apparatus according to Claim 5 wherein the curvature of the blades and the speed of rotation of the blades is arranged so that the suction developed is in-sufficient to interfere with air flows within the thresh-ing machine.
(7) Apparatus according to Claim 6 wherein the speed of rotation of the fan means is of the order of 250 rpm.
(8) Apparatus according to Claim 1 comprising a first upstanding wall extending across the machine and a second upstanding wall extending across the machine for-wardly of the first.
(9) Apparatus according to Claim 8 wherein the first upstanding wall is higher than the second.
(10) Apparatus according to Claim 8 including a curtain arranged to depend downwardly from the machine adjacent the first wall.
(11) Apparatus according to Claim 8 wherein the first and second walls include portions defining a pair of circular housings for receiving a pair of fans defining said blade means.
(12) Apparatus according to Claim 11 wherein the tips of the fan blades pass closely relative to the upstanding walls, wherein the two circular housing por-tions intersect and wherein the fans are arranged to overlap out of phase to avoid contact between the blades.
(13) Apparatus according to Claim 11 wherein the directional discharge means is defined by portions of the first and second walls and wherein the portion of the first wall defining the directional discharge means is arranged tangentially to the respective fan.
(14) Apparatus according to Claim 11 including a guide plate positioned between the two circular por-tions of the upstanding walls to direct chaff into the circular portions.
(15) Apparatus according to Claim 1 including drive means far receiving drive from the machine and com-municating the drive to the blade means.
(16) A grain threshing machine including a cleaning shoe from which chaff is discharged and a chaff spreading apparatus comprising a housing in the form of a of a flat substantially horizontal plate and walls up-standing from the plate, means for attaching the hous-ing to the threshing machine below the cleaning shoe to receive chaff therefrom, blade means, means mounting the blade means on the housing for rotation relative to the housing in a plane parallel thereto about an axis at right angles thereto to eject the chaff from the housing and directional discharge means defined by said upstand-ing walls of the housing and arranged to direct the chaff from the housing to at least one side of the threshing machine.
(17) A machine according to Claim 16 wherein the directional discharge means includes means defining a nozzle confining the ejection of the chaff solely to the side of the apparatus.
(18) A machine according to Claim 16 wherein the directional discharge means includes means defining a nozzle confining the ejection of the chaff solely to the side of the apparatus.
(19) A machine according to Claim 16 including a first and second fan rotatably mounted on the housing, the directional discharge means being arranged such that one of the fans ejects chaff from the housing to one side of the machine and the other fan directs chaff to the other side of the machine.
(20) A machine according to Claim 16 wherein each blade of the fan means is curved so as to develop a suction drawing chaff into the housing and wherein the housing is arranged such that the chaff is ejected from the tips of the fan means.
(21) A machine according to Claim 20 wherein the curvature of the blades and the speed of rotation of the blade is arranged so that the suction developed is insufficient to interfere with air flows within the threshing machine.
(22) A machine according to Claim 21 wherein the speed of rotation of the fan means is of the order of 250 rpm.
(23) A machine according to Claim 1 comprising a first upstanding wall extending across the machine and a second upstanding wall extending across the machine for-wardly of the first.
(24) Apparatus according to Claim 23 wherein the first upstanding wall is higher than the second.
(25) A machine according to Claim 23 including a curtain arranged to depend downwardly from the machine adjacent the first wall.
(26) A machine according to Claim 23 wherein the first and second walls include portions defining a pair of circular housings for receiving a pair of fans defining said blade means.
(27) A machine according to Claim 26 wherein the tips of the fan blades pass closely relatively to the upstanding walls, wherein the two circular housing por-tions intersect and wherein the fans are arranged to over-lap out of phase to avoid contact between the blades.
(28) A machine according to Claim 26 wherein the directional discharge means is defined by portions of the first and second walls and wherein the portion of the first wall defining the directional discharge means is arranged tangentially to the respective fan.
(29) A machine according to Claim 26 including a guide plate positioned between the two circular por-tions of the upstanding walls to direct chaff into the circular portions.
(30) A machine according to Claim 16 including drive means for receiving drive from the machine and com-municating the drive to the blade means.
(31) A chaff spreading apparatus for a grain threshing machine having a cleaning shoe from which chaff is discharged, the apparatus comprising a housing, means for attaching the housing to the threshing machine below the cleaning shoe to receive chaff therefrom, blade means, means mounting the blade means on the housing for rotation relative to the housing in a substantially hori-zontal plane about a substantially vertical axis to eject the chaff from the housing, and directional dis-charge means defined in the housing to direct the chaff from the housing to at least one side of the threshing machine.
(1) A chaff spreading apparatus for a grain threshing machine having a cleaning shoe from which chaff is discharged, the apparatus comprising a housing in the form of a flat substantially horizontal plate and walls upstanding from the plate, means for attaching the hous-ing to the threshing machine below the cleaning shoe to receive chaff therefrom, blade means, means mounting the blade means on the housing for rotation relative to the housing in a plane parallel thereto about an axis at right angles thereto to eject the chaff from the housing and directional discharge means defined by said upstanding walls of the housing and arranged to direct the chaff from the housing to at least one side of the threshing machine.
(2) Apparatus according to Claim 1 wherein the directional discharge means includes means defining a nozzle confining the ejection of the chaff solely to the side of the apparatus.
(3) Apparatus according to Claim 1 wherein the directional discharge means is arranged to direct the chaff from the housing to both sides of the threshing machine.
(4) Apparatus according to Claim 1 including a first and a second fan rotatably mounted on the housing, the directional discharge means being arranged such that one of the fans ejects chaff from the housing to one side of the machine and the other fan directs chaff to the other side of the machine.
(5) Apparatus according to Claim 1 wherein each blade of the fan means is curved so as to develop a suction drawing chaff into the housing and wherein the housing is arranged such that the chaff is ejected from the tips of the fan means.
(6) Apparatus according to Claim 5 wherein the curvature of the blades and the speed of rotation of the blades is arranged so that the suction developed is in-sufficient to interfere with air flows within the thresh-ing machine.
(7) Apparatus according to Claim 6 wherein the speed of rotation of the fan means is of the order of 250 rpm.
(8) Apparatus according to Claim 1 comprising a first upstanding wall extending across the machine and a second upstanding wall extending across the machine for-wardly of the first.
(9) Apparatus according to Claim 8 wherein the first upstanding wall is higher than the second.
(10) Apparatus according to Claim 8 including a curtain arranged to depend downwardly from the machine adjacent the first wall.
(11) Apparatus according to Claim 8 wherein the first and second walls include portions defining a pair of circular housings for receiving a pair of fans defining said blade means.
(12) Apparatus according to Claim 11 wherein the tips of the fan blades pass closely relative to the upstanding walls, wherein the two circular housing por-tions intersect and wherein the fans are arranged to overlap out of phase to avoid contact between the blades.
(13) Apparatus according to Claim 11 wherein the directional discharge means is defined by portions of the first and second walls and wherein the portion of the first wall defining the directional discharge means is arranged tangentially to the respective fan.
(14) Apparatus according to Claim 11 including a guide plate positioned between the two circular por-tions of the upstanding walls to direct chaff into the circular portions.
(15) Apparatus according to Claim 1 including drive means far receiving drive from the machine and com-municating the drive to the blade means.
(16) A grain threshing machine including a cleaning shoe from which chaff is discharged and a chaff spreading apparatus comprising a housing in the form of a of a flat substantially horizontal plate and walls up-standing from the plate, means for attaching the hous-ing to the threshing machine below the cleaning shoe to receive chaff therefrom, blade means, means mounting the blade means on the housing for rotation relative to the housing in a plane parallel thereto about an axis at right angles thereto to eject the chaff from the housing and directional discharge means defined by said upstand-ing walls of the housing and arranged to direct the chaff from the housing to at least one side of the threshing machine.
(17) A machine according to Claim 16 wherein the directional discharge means includes means defining a nozzle confining the ejection of the chaff solely to the side of the apparatus.
(18) A machine according to Claim 16 wherein the directional discharge means includes means defining a nozzle confining the ejection of the chaff solely to the side of the apparatus.
(19) A machine according to Claim 16 including a first and second fan rotatably mounted on the housing, the directional discharge means being arranged such that one of the fans ejects chaff from the housing to one side of the machine and the other fan directs chaff to the other side of the machine.
(20) A machine according to Claim 16 wherein each blade of the fan means is curved so as to develop a suction drawing chaff into the housing and wherein the housing is arranged such that the chaff is ejected from the tips of the fan means.
(21) A machine according to Claim 20 wherein the curvature of the blades and the speed of rotation of the blade is arranged so that the suction developed is insufficient to interfere with air flows within the threshing machine.
(22) A machine according to Claim 21 wherein the speed of rotation of the fan means is of the order of 250 rpm.
(23) A machine according to Claim 1 comprising a first upstanding wall extending across the machine and a second upstanding wall extending across the machine for-wardly of the first.
(24) Apparatus according to Claim 23 wherein the first upstanding wall is higher than the second.
(25) A machine according to Claim 23 including a curtain arranged to depend downwardly from the machine adjacent the first wall.
(26) A machine according to Claim 23 wherein the first and second walls include portions defining a pair of circular housings for receiving a pair of fans defining said blade means.
(27) A machine according to Claim 26 wherein the tips of the fan blades pass closely relatively to the upstanding walls, wherein the two circular housing por-tions intersect and wherein the fans are arranged to over-lap out of phase to avoid contact between the blades.
(28) A machine according to Claim 26 wherein the directional discharge means is defined by portions of the first and second walls and wherein the portion of the first wall defining the directional discharge means is arranged tangentially to the respective fan.
(29) A machine according to Claim 26 including a guide plate positioned between the two circular por-tions of the upstanding walls to direct chaff into the circular portions.
(30) A machine according to Claim 16 including drive means for receiving drive from the machine and com-municating the drive to the blade means.
(31) A chaff spreading apparatus for a grain threshing machine having a cleaning shoe from which chaff is discharged, the apparatus comprising a housing, means for attaching the housing to the threshing machine below the cleaning shoe to receive chaff therefrom, blade means, means mounting the blade means on the housing for rotation relative to the housing in a substantially hori-zontal plane about a substantially vertical axis to eject the chaff from the housing, and directional dis-charge means defined in the housing to direct the chaff from the housing to at least one side of the threshing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000421476A CA1179567A (en) | 1983-02-11 | 1983-02-11 | Chaff spreader for combine harvester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000421476A CA1179567A (en) | 1983-02-11 | 1983-02-11 | Chaff spreader for combine harvester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1179567A true CA1179567A (en) | 1984-12-18 |
Family
ID=4124556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000421476A Expired CA1179567A (en) | 1983-02-11 | 1983-02-11 | Chaff spreader for combine harvester |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1179567A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3544157C1 (en) * | 1985-08-20 | 1987-07-30 | Biso Bitter Gmbh & Co Kg | Combine device for distributing the chaff |
| FR2610782A1 (en) * | 1987-02-16 | 1988-08-19 | Claas Ohg | COMBINE HARVESTER COMPRISING A DEVICE FOR DISTRIBUTING THE MIXTURE OF GRAINS AND BALL |
| DE3546679C1 (en) * | 1985-12-13 | 1989-09-07 | Biso Bitter Gmbh & Co Kg | Combine harvester chaff distributing attachment |
| DE3529801C1 (en) * | 1985-08-20 | 1990-10-04 | Biso Bitter Gmbh & Co Kg | Chaff-distributing appliance for combine harvesters |
| WO1991011903A1 (en) * | 1990-02-16 | 1991-08-22 | Ferris James Whidborne | Straw treatment apparatus |
| US5215500A (en) * | 1992-04-22 | 1993-06-01 | Kirby Donald R | Material spreading apparatus |
| FR2710227A1 (en) * | 1992-06-03 | 1995-03-31 | Kloeckner Humboldt Deutz Ag | Combine harvester with a device for spreading or shedding the flattened straw |
| US6406368B1 (en) | 2000-09-20 | 2002-06-18 | Dutch Blacksmith Shop Ltd. | Straw and chaff spreader with spread to the rear |
-
1983
- 1983-02-11 CA CA000421476A patent/CA1179567A/en not_active Expired
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3544157C1 (en) * | 1985-08-20 | 1987-07-30 | Biso Bitter Gmbh & Co Kg | Combine device for distributing the chaff |
| DE3529801C1 (en) * | 1985-08-20 | 1990-10-04 | Biso Bitter Gmbh & Co Kg | Chaff-distributing appliance for combine harvesters |
| DE3546679C1 (en) * | 1985-12-13 | 1989-09-07 | Biso Bitter Gmbh & Co Kg | Combine harvester chaff distributing attachment |
| FR2610782A1 (en) * | 1987-02-16 | 1988-08-19 | Claas Ohg | COMBINE HARVESTER COMPRISING A DEVICE FOR DISTRIBUTING THE MIXTURE OF GRAINS AND BALL |
| BE1003991A4 (en) * | 1987-02-16 | 1992-09-08 | Claas Ohg | Combine fitted with a device for the distribution of mixed grains and ball. |
| WO1991011903A1 (en) * | 1990-02-16 | 1991-08-22 | Ferris James Whidborne | Straw treatment apparatus |
| US5215500A (en) * | 1992-04-22 | 1993-06-01 | Kirby Donald R | Material spreading apparatus |
| AU657851B2 (en) * | 1992-04-22 | 1995-03-23 | Donald R. Kirby | Material spreading apparatus |
| FR2710227A1 (en) * | 1992-06-03 | 1995-03-31 | Kloeckner Humboldt Deutz Ag | Combine harvester with a device for spreading or shedding the flattened straw |
| US6406368B1 (en) | 2000-09-20 | 2002-06-18 | Dutch Blacksmith Shop Ltd. | Straw and chaff spreader with spread to the rear |
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| MKEC | Expiry (correction) | ||
| MKEX | Expiry |