CA1337064C - Draw bar sprayer kit - Google Patents
Draw bar sprayer kitInfo
- Publication number
- CA1337064C CA1337064C CA 588160 CA588160A CA1337064C CA 1337064 C CA1337064 C CA 1337064C CA 588160 CA588160 CA 588160 CA 588160 A CA588160 A CA 588160A CA 1337064 C CA1337064 C CA 1337064C
- Authority
- CA
- Canada
- Prior art keywords
- boom
- spray
- implement
- transverse
- frame
- 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 - Fee Related
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M7/00—Special adaptations or arrangements of liquid-spraying apparatus for purposes covered by this subclass
- A01M7/0003—Atomisers or mist blowers
- A01M7/0014—Field atomisers, e.g. orchard atomisers, self-propelled, drawn or tractor-mounted
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B73/00—Means or arrangements to facilitate transportation of agricultural machines or implements, e.g. folding frames to reduce overall width
- A01B73/02—Folding frames
- A01B73/06—Folding frames foldable about a vertical axis
- A01B73/067—Folding frames foldable about a vertical axis to a position essentially rearward of the axis, in relation to the direction of travel
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M7/00—Special adaptations or arrangements of liquid-spraying apparatus for purposes covered by this subclass
- A01M7/005—Special arrangements or adaptations of the spraying or distributing parts, e.g. adaptations or mounting of the spray booms, mounting of the nozzles, protection shields
- A01M7/0071—Construction of the spray booms
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental Sciences (AREA)
- Insects & Arthropods (AREA)
- Pest Control & Pesticides (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Catching Or Destruction (AREA)
Abstract
An agricultural field sprayer is provided, comprised of a frame adapted to be towed by a tractor, and having a transverse boom to which implements such as a harrow or packer may be attached. A spray boom is mounted on the transverse boom and is adapted to pivot fore or aft of the transverse boom, for spraying fore or aft of the attached implements. A height adjustment feature is provided so as to allow the spray boom to direct spray downward from different heights relative to the ground.
Description
._ 1 3 3 7 0 b ~ 72061-18 DRAW BAR SPRAYER KIT
The present invention is a towed agricultural sprayer adapted to releasably engage a soil-tilling implement such as a harrow or packer, and which is adjustable for vertical and hori-zontal positioning relative to its support frame.
Agricultural sprayers known to the art are of two types, namely those that may be used in combination with a soil-tilling implement and those that are not adapted to be used in combination with another implement. The former will be referred to herein as a "sprayer kit" and the latter as a "field sprayer". The two types of sprayers each have unique requirements that are difficult to reconcile. Sprayer kits are generally required to direct the spray in front of the towed implement, in order for the spray to be incorporated into the soil by the implement. Accordingly, the spray boom to which the nozzles are attached must precede the implement. Field sprayers, on the other hand, are generally used in fields with emergent crops and are preferably provided with a height-positioning feature that raises or lowers the spray nozzles to accommodate crops of different heights. It is of crucial importance that a field sprayer provide an even spray pattern without blank spots; accordingly, there should not be any obstruc-tions between the spray nozzles and the ground. This requires the spray nozzles of a field sprayer to be positioned rearwardly of the support frame of the sprayer in order that the structural members of the frame required to support and tow the sprayer do not interfere with the spray nozzles in any of their various elevational positions.
*
B
Known field sprayers having multiple height positions cannot be combined with an agricultural implement in such a manner that the spray boom is positionable in advance of the implement and is able to provide an even spray pattern in all height posi-tions. Inevitably, in any such combination, structural members that link the spray boom with the implement pass under the spray boom and interfere with the spray. Accordingly, it has not before been possible to combine a fully-functional field sprayer with a sprayer kit.
Accordingly, the present invention seeks to provide a towed agricultural implement comprised of (a) a frame releasably engagable to a tractor or the like; (b) a transverse boom mounted to said frame and adapted to engage a harrow, packer or other field implement; (c) a spray boom pivotally engaged to said trans-verse boom in a spaced apart relation thereto, having pivot means whereby said spray boom may be positioned either fore or aft of the said transverse boom; and (d) wheels positioned to support said frame and transverse boom.
In a preferred embodiment, the invention seeks to provide a field sprayer having the elements described above, wherein the spray boom is adapted to be positioned at different heights relative to the ground.
T~e present invention will be illustrated by way of a preferred embodiment, wherein:
Figure 1 is a perspective view of a field sprayer according to the present invention;
Figure 2 is a perspective view of the field sprayer in B
1 3 3 7 0 ~ 4 72061-18 the collapsed position for road travel;
Figure 3 is a perspective exploded view of the central portion of the device; and Figure 4 is a perspective exploded view of a wing portion having an implement-support boom engaged thereto;
Figure 5 is a perspective exploded view of a wing portion of the device having a spray bar engaged thereto;
Figure 6 is a second perspective view of a field sprayer according to the present invention;
Figure 7 is an elevational view of a portion of the device illustrating the height adjustment bracket;
Figure 8 is a perspective view of a portion of the spray boom of the device, illustrating an array of spray nozzles.
Referring to Figure 1, a frame 1 is provided having a hitch at the front end thereof, (not shown) which may be removably mounted to a tractor, not shown. The frame 1 is supported by wheels 6 and comprises parallel members 3 and a support structure 4 bridging the parallel members 3 and adapted to support a tank 5.
A pump is provided (not shown) to draw fluid from the tank and supply it under pressure to the lines may be maintained in posi-tion by straps, not illustrated. A transverse boom 10 is provided having a central portion 21 and two wing portions 22 (only one of which is illustrated in Figure 1). The central portion 21 is pivotally mounted to the frame 1 by way of two mounts 12, each attached to a side of the frame 1 and adapted to pivot in a verti-cal plane. Each wing portion 22 is linked to the frame 1 by way of a strut 11. The strut 11 is adapted to allow the wing portion 22 to fold rearwardly by means of a foldable extension, not shown, on the strut 11 at the point at which it is engaged to the frame 1. The second end of the strut is engaged to the transverse boom 10 by way of pivot mount 13. The engagement means of the strut with the frame and the transverse boom 10 is fully described in co-pending Canadian patent application No. 560,218. The pivot mount 13 is adapted to pivot in horizontal and vertical planes, and consequently allows the wing portion 22 to fold rearwardly and rotate, as will be described below.
A piston 99 is provided on each side of the frame 1, and is engaged at the forward end thereof to a piston support 100 mounted to the frame 1, and at the rearward end thereof to a rotator lever 101 engaged to the transverse boom 10. Hydraulic lines, not illustrated, connects the hydraulic cylinder to a hydraulic source in the tractor. The hydraulic pistons 99 are adapted to rotate the transverse boom to the raised position illustrated in Figure 2.
Each wing assembly 22 is connected to the central portion 21 by a joint 23 that allows the wing assembly both to rotate upwardly and pivot rearwardly for road transport, as illus-trated in Figure 2.
Referring to Figure 3, the central portion 21 of the boom 10 is provided with a cap plate 24 at each end thereof. A
pair of vertically-oriented parallel plates 26 protrudes from each cap plate 24, each plate 26 ~eing provided with an aperture 27.
Each parallel plate 26 is curved downwards, and the aperture 27 is positioned in the lower, outer portion of each plate 26. Refer-B
-1 3 3 7 o ~ 4 72061-18 ring to Figures 4 and 5, an end of each wing assembly 22 abutting the central portion 21 is provided with a cap plate 25 and two parallel horizontal plates 28 extending from the top and bottom, respectively, of the cap plate 25. An aperture 29 is provided within each plate 28. The joint 23 is mounted to the plates 26 and 28, by way of bolts inserted through apertures 27 and 29 respectively.
Referring to Figure 4, the free end of each of the wing assemblies is provided with a pivotally-mounted wheel assembly 31 positionable such that the axle 35 thereof is either parallel or transverse to the wing assembly, to allow the transverse boom 10 to roll in either the extended field position or the collapsed road position, respectively.
Each wheel assembly is comprised of a pivot mount 32, pivotally engaged to a corresponding mount 33 fixed to an end of the wing assembly 22. The pivot mount is actuated by a hydraulic assembly 34 to position the wheel either for field use or for road transport. An axle 35 extends from the pivot mount 32, and a wheel 36 is rotatably engaged thereto. The wheel assembly is positioned to allow the axle 35 to extend beyond the end of the wing assembly 22 when in the extended field position in order that the wheel 36 is unobstructed.
In use, the device may be converted from the extended field position to the collapsed road position by the following steps:
(a) the two pistons 99 are actuated, and their contrac-tion rotates the boom 10 to a vertical position;
(b) the wheel assemblies 31 are pivoted such that each axle is transverse to the wing assembly;
(c) the device is driven forward by the tractor, and the forward motion causes the two wing assemblies to pivot rearwardly to the position illustrated in Figure 2, and the struts 11 to pivot rearwardly as described above.
Referring to Figures 4, 5 and 6, a series of regularly spaced supports 45 are releasably mounted on the transverse boom 10, and extend rearwardly therefrom. The supports are adapted to engage a spray boom 60, as illustrated in Figures 5 and ~, and to releasably engage an implement-support boom 59, as illustrated in Figure 4. Each support 45 is engaged to the transverse boom 10 by a mounting element 47 that fixedly attaches the support 45 to the transverse boom 10. Referring to Figure 4, each mounting element 47 is comprised of vertical parallel plates 48 releasably attached by bolt 46 to the transverse boom 10, and a crossbar 49 linking the tops of the plates 48 with the support 45. A pair of spacers 54 are positioned between the transverse boom L0 and the crossbar 49. An implement mount 51 is provided on the rear face of each support member 45. The mounts 51 cooperate with the implement support boom 59 to releasably engage an implement, such as a harrow or packer. The forward portion of the support boom 59 is positioned under the supports 45 and may be releasably engaged to the top surface of the transverse boom 10 (by means of supports 45 and mounts 51). Referring to Figure 5, a pivot mount 55 is provided to pivotally mount a spray boom 60 to the supports 45.
Referring to Figures 3, 5 and 8, the spray boom 60 is comprised of a transverse bar 61 and a high-pressure pipe 62 parallel thereto, both segmented to correspond to the wing and center portions of the transverse boom 10. The bar 61 is rotat-ably engaged to at least several of the supports 45 by the first and second pivot mounts 55 and 56. First pivot mount 55 also engages a positioning arm 90, as set out in detail below. The pipe 62 is linked by high pressure hose lines 82, illustrated in Figure 1, to the tank 5. An array of spray nozzles 81, illustra-ted in Figure 8, are fixedly attached to the pipe 62. Each spray nozzle 81 communicates with the interior of the pipe 62 and is adapted to direct a spray downwardly. The pipe 62 is supported by a series of evenly spaced connector bars 63. Each connector bar 63 is fixedly attached at one end thereof to the transverse bar 61. A sleeve 64 is provided at the other end of each connector bar 63, with the pipe 62 rotatably engaged therein. The bar 61 and pipe 62 are thus held in parallel, spaced-apart relation to each other and to the transverse boom 10. The free ends of the segments of the pipe 62 are capped with caps 65. Each wing portion of the pipe 62 includes a looped portion 66 that enables the spray boom to avoid contacting the strut attachment elements 13 and 14 when the spray boom is in the forward position, as will be described below. A positioning arm 90 is provided for each segment of the spray boom 60 and cooperates with the height-positioning bracket 75, referred to below, to maintain the spray nozzles 81 at a fixed angle relative to the ground regardless of the height of the spray boom. The positioning arm 90 causes the pipe 62 to rotate within the sleeves 64 as the spray boom is raised or lowered. The positioning arm 90 is provided with a first elbow 91 that pivotally engages a first end of the arm to a corresponding mount 55, and a second elbow 92 that engages the second end thereof to a pivot mount 93 attached to the pipe 62.
The first end is rotatably engaged within one of two alternate apertures 102(a) and 102(b) within the corresponding mount 55, depending on the desired axial position of the spray nozzles. The positioning arm 90 is adapted to position the pipe 62 such that the spray nozzles 81 attached thereto are directed either forward-ly at an angle of about 45 from the vertical or directly down-ward. The former position is achieved by inserting the first elbow within the rearward aperture 102(a) and is utilized when the spray boom 60 is positioned aft of the transverse boom 10. I'he latter position is utilized when the spray boom is fore of the transverse boom and is achieved by inserting the first elbow with-in the forward aperture 102(b).
Referring to Figure 7, a spray boom height-positioning bracket 75 connects at least one of the support members 45 with the bar 61. The positioning bracket 75 is comprised of a reaction arm 76 fixedly mounted to the bar 61, having a bolt hole 77; an attachment bracket 78 mounted to the lower surface of the support member 45; and an engagement arm 79 having an array of apertures 80. The engagement arm 79 is pivotally mounted at one end to the attachment bracket 78, and adjustably mounted at the other end to the reaction arm 76 by way of a pivot bolt inserted through the bolt hole 77 and one of the corresponding apertures in engagement arm 79. In use, the positioning bracket 75 maintains the spray B
-boom 60 in a fixed position, which may be either fore or aft of the transverse boom 10 and at a variety of heights relative to theground.
In operation, the sprayer unit is towed behind a tractor, which also provides the motive force to run the sprayer pump. A variety of agricultural implements, for example harrows and packers may be attached to the transverse boom 10.
Pressurized liquids such as pesticides or herbicides are sprayed downwardly through the nozzles. The spray boom may be positioned to lie either in front of an attached implement or, when no imple-ment is attached, to lie rearwardly of the boom 10. In the former position, chemical may be incorporated into the soil by the attached implement. In the latter position, an unobstructed spray is directed downwardly from nozzles that may be positioned at varying heights relative to the ground.
It will be understood that various alterations may be made to the embodiment described herein without departing from the true spirit and scope of the invention as defined by the appended claims.
The present invention is a towed agricultural sprayer adapted to releasably engage a soil-tilling implement such as a harrow or packer, and which is adjustable for vertical and hori-zontal positioning relative to its support frame.
Agricultural sprayers known to the art are of two types, namely those that may be used in combination with a soil-tilling implement and those that are not adapted to be used in combination with another implement. The former will be referred to herein as a "sprayer kit" and the latter as a "field sprayer". The two types of sprayers each have unique requirements that are difficult to reconcile. Sprayer kits are generally required to direct the spray in front of the towed implement, in order for the spray to be incorporated into the soil by the implement. Accordingly, the spray boom to which the nozzles are attached must precede the implement. Field sprayers, on the other hand, are generally used in fields with emergent crops and are preferably provided with a height-positioning feature that raises or lowers the spray nozzles to accommodate crops of different heights. It is of crucial importance that a field sprayer provide an even spray pattern without blank spots; accordingly, there should not be any obstruc-tions between the spray nozzles and the ground. This requires the spray nozzles of a field sprayer to be positioned rearwardly of the support frame of the sprayer in order that the structural members of the frame required to support and tow the sprayer do not interfere with the spray nozzles in any of their various elevational positions.
*
B
Known field sprayers having multiple height positions cannot be combined with an agricultural implement in such a manner that the spray boom is positionable in advance of the implement and is able to provide an even spray pattern in all height posi-tions. Inevitably, in any such combination, structural members that link the spray boom with the implement pass under the spray boom and interfere with the spray. Accordingly, it has not before been possible to combine a fully-functional field sprayer with a sprayer kit.
Accordingly, the present invention seeks to provide a towed agricultural implement comprised of (a) a frame releasably engagable to a tractor or the like; (b) a transverse boom mounted to said frame and adapted to engage a harrow, packer or other field implement; (c) a spray boom pivotally engaged to said trans-verse boom in a spaced apart relation thereto, having pivot means whereby said spray boom may be positioned either fore or aft of the said transverse boom; and (d) wheels positioned to support said frame and transverse boom.
In a preferred embodiment, the invention seeks to provide a field sprayer having the elements described above, wherein the spray boom is adapted to be positioned at different heights relative to the ground.
T~e present invention will be illustrated by way of a preferred embodiment, wherein:
Figure 1 is a perspective view of a field sprayer according to the present invention;
Figure 2 is a perspective view of the field sprayer in B
1 3 3 7 0 ~ 4 72061-18 the collapsed position for road travel;
Figure 3 is a perspective exploded view of the central portion of the device; and Figure 4 is a perspective exploded view of a wing portion having an implement-support boom engaged thereto;
Figure 5 is a perspective exploded view of a wing portion of the device having a spray bar engaged thereto;
Figure 6 is a second perspective view of a field sprayer according to the present invention;
Figure 7 is an elevational view of a portion of the device illustrating the height adjustment bracket;
Figure 8 is a perspective view of a portion of the spray boom of the device, illustrating an array of spray nozzles.
Referring to Figure 1, a frame 1 is provided having a hitch at the front end thereof, (not shown) which may be removably mounted to a tractor, not shown. The frame 1 is supported by wheels 6 and comprises parallel members 3 and a support structure 4 bridging the parallel members 3 and adapted to support a tank 5.
A pump is provided (not shown) to draw fluid from the tank and supply it under pressure to the lines may be maintained in posi-tion by straps, not illustrated. A transverse boom 10 is provided having a central portion 21 and two wing portions 22 (only one of which is illustrated in Figure 1). The central portion 21 is pivotally mounted to the frame 1 by way of two mounts 12, each attached to a side of the frame 1 and adapted to pivot in a verti-cal plane. Each wing portion 22 is linked to the frame 1 by way of a strut 11. The strut 11 is adapted to allow the wing portion 22 to fold rearwardly by means of a foldable extension, not shown, on the strut 11 at the point at which it is engaged to the frame 1. The second end of the strut is engaged to the transverse boom 10 by way of pivot mount 13. The engagement means of the strut with the frame and the transverse boom 10 is fully described in co-pending Canadian patent application No. 560,218. The pivot mount 13 is adapted to pivot in horizontal and vertical planes, and consequently allows the wing portion 22 to fold rearwardly and rotate, as will be described below.
A piston 99 is provided on each side of the frame 1, and is engaged at the forward end thereof to a piston support 100 mounted to the frame 1, and at the rearward end thereof to a rotator lever 101 engaged to the transverse boom 10. Hydraulic lines, not illustrated, connects the hydraulic cylinder to a hydraulic source in the tractor. The hydraulic pistons 99 are adapted to rotate the transverse boom to the raised position illustrated in Figure 2.
Each wing assembly 22 is connected to the central portion 21 by a joint 23 that allows the wing assembly both to rotate upwardly and pivot rearwardly for road transport, as illus-trated in Figure 2.
Referring to Figure 3, the central portion 21 of the boom 10 is provided with a cap plate 24 at each end thereof. A
pair of vertically-oriented parallel plates 26 protrudes from each cap plate 24, each plate 26 ~eing provided with an aperture 27.
Each parallel plate 26 is curved downwards, and the aperture 27 is positioned in the lower, outer portion of each plate 26. Refer-B
-1 3 3 7 o ~ 4 72061-18 ring to Figures 4 and 5, an end of each wing assembly 22 abutting the central portion 21 is provided with a cap plate 25 and two parallel horizontal plates 28 extending from the top and bottom, respectively, of the cap plate 25. An aperture 29 is provided within each plate 28. The joint 23 is mounted to the plates 26 and 28, by way of bolts inserted through apertures 27 and 29 respectively.
Referring to Figure 4, the free end of each of the wing assemblies is provided with a pivotally-mounted wheel assembly 31 positionable such that the axle 35 thereof is either parallel or transverse to the wing assembly, to allow the transverse boom 10 to roll in either the extended field position or the collapsed road position, respectively.
Each wheel assembly is comprised of a pivot mount 32, pivotally engaged to a corresponding mount 33 fixed to an end of the wing assembly 22. The pivot mount is actuated by a hydraulic assembly 34 to position the wheel either for field use or for road transport. An axle 35 extends from the pivot mount 32, and a wheel 36 is rotatably engaged thereto. The wheel assembly is positioned to allow the axle 35 to extend beyond the end of the wing assembly 22 when in the extended field position in order that the wheel 36 is unobstructed.
In use, the device may be converted from the extended field position to the collapsed road position by the following steps:
(a) the two pistons 99 are actuated, and their contrac-tion rotates the boom 10 to a vertical position;
(b) the wheel assemblies 31 are pivoted such that each axle is transverse to the wing assembly;
(c) the device is driven forward by the tractor, and the forward motion causes the two wing assemblies to pivot rearwardly to the position illustrated in Figure 2, and the struts 11 to pivot rearwardly as described above.
Referring to Figures 4, 5 and 6, a series of regularly spaced supports 45 are releasably mounted on the transverse boom 10, and extend rearwardly therefrom. The supports are adapted to engage a spray boom 60, as illustrated in Figures 5 and ~, and to releasably engage an implement-support boom 59, as illustrated in Figure 4. Each support 45 is engaged to the transverse boom 10 by a mounting element 47 that fixedly attaches the support 45 to the transverse boom 10. Referring to Figure 4, each mounting element 47 is comprised of vertical parallel plates 48 releasably attached by bolt 46 to the transverse boom 10, and a crossbar 49 linking the tops of the plates 48 with the support 45. A pair of spacers 54 are positioned between the transverse boom L0 and the crossbar 49. An implement mount 51 is provided on the rear face of each support member 45. The mounts 51 cooperate with the implement support boom 59 to releasably engage an implement, such as a harrow or packer. The forward portion of the support boom 59 is positioned under the supports 45 and may be releasably engaged to the top surface of the transverse boom 10 (by means of supports 45 and mounts 51). Referring to Figure 5, a pivot mount 55 is provided to pivotally mount a spray boom 60 to the supports 45.
Referring to Figures 3, 5 and 8, the spray boom 60 is comprised of a transverse bar 61 and a high-pressure pipe 62 parallel thereto, both segmented to correspond to the wing and center portions of the transverse boom 10. The bar 61 is rotat-ably engaged to at least several of the supports 45 by the first and second pivot mounts 55 and 56. First pivot mount 55 also engages a positioning arm 90, as set out in detail below. The pipe 62 is linked by high pressure hose lines 82, illustrated in Figure 1, to the tank 5. An array of spray nozzles 81, illustra-ted in Figure 8, are fixedly attached to the pipe 62. Each spray nozzle 81 communicates with the interior of the pipe 62 and is adapted to direct a spray downwardly. The pipe 62 is supported by a series of evenly spaced connector bars 63. Each connector bar 63 is fixedly attached at one end thereof to the transverse bar 61. A sleeve 64 is provided at the other end of each connector bar 63, with the pipe 62 rotatably engaged therein. The bar 61 and pipe 62 are thus held in parallel, spaced-apart relation to each other and to the transverse boom 10. The free ends of the segments of the pipe 62 are capped with caps 65. Each wing portion of the pipe 62 includes a looped portion 66 that enables the spray boom to avoid contacting the strut attachment elements 13 and 14 when the spray boom is in the forward position, as will be described below. A positioning arm 90 is provided for each segment of the spray boom 60 and cooperates with the height-positioning bracket 75, referred to below, to maintain the spray nozzles 81 at a fixed angle relative to the ground regardless of the height of the spray boom. The positioning arm 90 causes the pipe 62 to rotate within the sleeves 64 as the spray boom is raised or lowered. The positioning arm 90 is provided with a first elbow 91 that pivotally engages a first end of the arm to a corresponding mount 55, and a second elbow 92 that engages the second end thereof to a pivot mount 93 attached to the pipe 62.
The first end is rotatably engaged within one of two alternate apertures 102(a) and 102(b) within the corresponding mount 55, depending on the desired axial position of the spray nozzles. The positioning arm 90 is adapted to position the pipe 62 such that the spray nozzles 81 attached thereto are directed either forward-ly at an angle of about 45 from the vertical or directly down-ward. The former position is achieved by inserting the first elbow within the rearward aperture 102(a) and is utilized when the spray boom 60 is positioned aft of the transverse boom 10. I'he latter position is utilized when the spray boom is fore of the transverse boom and is achieved by inserting the first elbow with-in the forward aperture 102(b).
Referring to Figure 7, a spray boom height-positioning bracket 75 connects at least one of the support members 45 with the bar 61. The positioning bracket 75 is comprised of a reaction arm 76 fixedly mounted to the bar 61, having a bolt hole 77; an attachment bracket 78 mounted to the lower surface of the support member 45; and an engagement arm 79 having an array of apertures 80. The engagement arm 79 is pivotally mounted at one end to the attachment bracket 78, and adjustably mounted at the other end to the reaction arm 76 by way of a pivot bolt inserted through the bolt hole 77 and one of the corresponding apertures in engagement arm 79. In use, the positioning bracket 75 maintains the spray B
-boom 60 in a fixed position, which may be either fore or aft of the transverse boom 10 and at a variety of heights relative to theground.
In operation, the sprayer unit is towed behind a tractor, which also provides the motive force to run the sprayer pump. A variety of agricultural implements, for example harrows and packers may be attached to the transverse boom 10.
Pressurized liquids such as pesticides or herbicides are sprayed downwardly through the nozzles. The spray boom may be positioned to lie either in front of an attached implement or, when no imple-ment is attached, to lie rearwardly of the boom 10. In the former position, chemical may be incorporated into the soil by the attached implement. In the latter position, an unobstructed spray is directed downwardly from nozzles that may be positioned at varying heights relative to the ground.
It will be understood that various alterations may be made to the embodiment described herein without departing from the true spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A towed agricultural implement comprised of (a) a frame releasably engagable to a tractor or the like;
(b) a transverse boom mounted to said frame and adapted to engage a field implement such as a harrow or packer;
(c) a spray boom pivotally engaged to said transverse boom in a spaced apart relation thereto, having pivot means whereby said spray boom may be positioned either fore of said field implement or aft of said transverse boom; and (d) wheels positioned to support said frame and transverse boom.
(b) a transverse boom mounted to said frame and adapted to engage a field implement such as a harrow or packer;
(c) a spray boom pivotally engaged to said transverse boom in a spaced apart relation thereto, having pivot means whereby said spray boom may be positioned either fore of said field implement or aft of said transverse boom; and (d) wheels positioned to support said frame and transverse boom.
2. An implement as claimed in claim 1, wherein a chemical tank is provided, supported by said frame and connected by tubing or the like to the spray boom.
3. An implement as claimed in claim 1, wherein the trans-verse boom is provided with a support extending perpendicularly thereto, and wherein said spray boom comprises at least one first longitudinal member pivotally engaged at one end thereof to said support, at least one second longitudinal member spaced apart from said first longitudinal member, and at least one connector connecting said longitudinal members, said second longitudinal member having at least one spray nozzle adapted to direct liquid in a downwards direction whether said spray is in the fore or aft position.
4. An implement as claimed in claim 3, wherein said second longitudinal member is rotationally engaged to said connector.
5. An implement as claimed in claim 4, wherein said spray boom is adapted to position the nozzle to direct spray directly downwards when said spray boom is positioned fore of said trans-verse boom, and to direct spray downwardly and forwardly at an angle substantially 45° from the vertical when said spray boom is positioned aft of said transverse boom.
6. An implement as claimed in claim 1, wherein said spray boom is adapted to be positioned at varying heights relative to the ground.
7. An implement as claimed in claims 4 or 6 wherein there is further provided a positioning arm adapted to maintain said second longitudinal member in a fixed radial angle relative to the ground when said second longitudinal arm is raised or lowered.
8. An implement as claimed in claim 1, wherein said trans-verse boom is comprised of a central portion and two wing portions pivotally engaged thereto and adapted to swing rearwardly for facilitating the transport of the implement.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63050162A JP2818658B2 (en) | 1988-03-03 | 1988-03-03 | Monoclonal antibody recognizing human atherosclerosis and method for producing the same |
| CA 588160 CA1337064C (en) | 1989-01-13 | 1989-01-13 | Draw bar sprayer kit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 588160 CA1337064C (en) | 1989-01-13 | 1989-01-13 | Draw bar sprayer kit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1337064C true CA1337064C (en) | 1995-09-19 |
Family
ID=4139445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 588160 Expired - Fee Related CA1337064C (en) | 1988-03-03 | 1989-01-13 | Draw bar sprayer kit |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1337064C (en) |
-
1989
- 1989-01-13 CA CA 588160 patent/CA1337064C/en not_active Expired - Fee Related
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