CA2040923A1 - Underwater weed dredger - Google Patents
Underwater weed dredgerInfo
- Publication number
- CA2040923A1 CA2040923A1 CA 2040923 CA2040923A CA2040923A1 CA 2040923 A1 CA2040923 A1 CA 2040923A1 CA 2040923 CA2040923 CA 2040923 CA 2040923 A CA2040923 A CA 2040923A CA 2040923 A1 CA2040923 A1 CA 2040923A1
- Authority
- CA
- Canada
- Prior art keywords
- weed
- dredger
- weeds
- engaging
- dredger according
- 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.)
- Abandoned
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- Soil Working Implements (AREA)
Abstract
UNDERWATER WEED DREDGER
ABSTRACT OF THE DISCLOSURE
A weed dredger has a floating body consisting of two parallel floats carrying a weed collecting wagon. A weed pulling mechanism mounted on the front of the body includes a subframe that may be positioned sloping downwardly to the front into a body of water. This carries a main frame that slides along the sub-frame with its lower end supported on the bottom by a pair of wheels. The main frame carries a conveyor with weed pulling cross bars and a reel for drawing weeds into the cross bar so that as the cross bars progress up the conveyor, they pull weeds and their roots from the bottom without a severing action.
ABSTRACT OF THE DISCLOSURE
A weed dredger has a floating body consisting of two parallel floats carrying a weed collecting wagon. A weed pulling mechanism mounted on the front of the body includes a subframe that may be positioned sloping downwardly to the front into a body of water. This carries a main frame that slides along the sub-frame with its lower end supported on the bottom by a pair of wheels. The main frame carries a conveyor with weed pulling cross bars and a reel for drawing weeds into the cross bar so that as the cross bars progress up the conveyor, they pull weeds and their roots from the bottom without a severing action.
Description
UNDERWATER WEED DREDGER
FIELD OF_THE INVENTION
The pcesent invention relates to weed dredgers and more pacticularly ko a dcedger for removing underwater vegetation.
BACKGROUND
Cucrently used undecwatec weed removal equipment commonly uses a sickle bar cutter for cutting of the weeds near the bottom of the body of water. This can have the countec pcoductive effect of producing inccea~ed weed growth.
Consequently, cectain proposals have been made for equipment that will uproot the weeds. These ace generally complex devices that may involve engaging and pulling on the uppec gcowth of the weed oc scarifying the weed bed. Pulling on the upper gcowth may tear the weeds without uprooting them, while scacifying the bed requires a powerful dcive to genecate the necessacy fo~ce.
The pcesent invention celates to a novel weed pullec.
SUMMARY OF THE INVENTION
Accocding to one aspect of the pcesent invention there is pcovided a weed dredgec compcising:
- weed engaging means for engaging under watec weeds adjacent the bottom of a body of water;
- weed pulling means foc drawing the weed engaging means upwardly for upcooting weeds engaged theceby;
and - weed transpoc~ing means for tcansporting upcooted weeds to a position above the body of watec.
Accocding to anothec aspect of the pcesent invention thece is provided a weed dcedgec comprising:
- a plusality o weed engaging members, - conveyor means for pcesenting the weed engaging member sequentially to a weed engaging position adjacent the bottom of a body of water and foc dcawing the weed engaging mambecs sequentially upwacds fcom the weed engaging position.
The weeds ace prefecably engaged by an elongate bar with v-shaped notches along its fcont edge. A ceel may be used to dcaw the weedq firmly into the notches so that when the bar is dcawn upwacdly the weed is dcawn with it, root and all.
In pcefecred embodiments, the weeds are dischacged into a wagon on the dcadgec, so that the weed filled wagon ~c-n be drawn from the dredger and transported to a disposal site. Thi= minimizes the amount of weed handling cequiced.
Othec beneficial charactecistics of the presently preferred embodiment of the invention will become apparent as the following descciption pcoceeds.
~RIEF DESCRIPTION OF THE DRAWINGS
In the accompanying drawings, which illustrate an exemplory embodiment of the present invention:
Figure l is a side elevation of a dredgec in its wocking position;
Figure 2 is a side elevation of the dredger in its transport position;
Figure 3 is a f~ont elevation of the dredger in the transport position;
Figure 4 is a plan view of the dcedger;
Figuce 5 is a plan view of a conveyor sub-fcame;
Figure 6 is a plan view of a conveyor main-fcame;
Figuce 7 is a cross-sectional along line VII-VII
of Figure 4;
Figure 8 is an isometric view of a ceel;
Figure 9 is an isometric view of a conveyoc ccoss bac; and Figure lO is an isometric view of a wagon.
DETAI~ED DESCRIPTION
Referring to the accompanying drawings, especi.11y to Figures 1 and 2; there i6 i11ustcated a dcedgec 2 ~
10 that includes a floating body 12 consisting of two spaced apart, pacallel floats 14, each of L-shaped cross-section as illustcated most pacticularly in Figure 3. The floats are coupled by cross-~eams 16 so as to focm a single unit.
At the cear of the floating body is a paddle wheel 18, fitted into the space between the two floats 14. The paddle wheel i9 driven by an hydcaulic motor 20 poweced by a power unit 21 that is al~o used to supply hydcaulic pcessuce foc opecating the complete dcedgec. The unit 21 is mounted on a platform 22 bcidging the two floats 14 immediately in front of the paddle wheel. Two rudders 24 are fitted to the floating body behind the cespective floats 14.
Mounted on the platfo~m 22, immediately in fcont of the powec unit 21 is a tower 26 cacrying an opecator's chaic 28 and a set of contcols 30 foc contcolling the opecations of the dredgec.
At the fcont of the floating body is a weed pulling assembly 32. This includes two front standacds 34 on ; ~ opposite sides of the body 12 and supported in position by cespective angle bcaces 36. Each standacd cacries a slide 38 that will slide along the standacd fcom top to bottom. The slide caccies a roller 40 on the inside for pucpo es that will be discussed in the following.
; - 4 -A cable 42 is connected to the slide 38 and extends up the standard 34 and passes over a sheave 44 adjacent the top end of the standard. Ecom the sheave 44, the cable runs down the centre o~ the standa~d and ovec a sheave 46 adjacent the bottom. The end of the cable is wound on an hydraulically operated winch 48.
The floating body 12 also carcies a cear support 50 that includes two standacds 52 joined by an upper cross bar 54. The ccoss bar and the standards ace braced by angle bcaces 56. At the lower end of each standacd 52 it is connected to the top of the floating body 12 by a pivot 58. One of the standacds 52 caccies a winch 60 and a sheave 62 foc purposes that will be de~cribed in the following.
The pivoting of the rear support 50 is controlled with two hydcaulic cylinders 64, one on each ~ide of the floating body. Each cylinder is connected to a respective one of~ the standacds by a lug 66 on the standacd and a pin (not shown). The cylindec is pivotally mounted on the floating body 12 by a cylindec mount 68.
The standards 34 and the rear suppoct 50 carry ths weed puller and conveyor assembly 32. This includes a sub-fcame 70 with two elongate cails 72 joined by end members 74 and cross bcacing 76. The rails 72 and the end membecs 74 :
_ 5 _ ' ace channels, while the cross bLacing is angle section. As illustcated most pacticularly in Figure 7, each of the ~ails i~
equipped with a flange 78 projecting upwardly along its top, inner edge. A second flange 80 extend along the top outer edge and extends both above and below the upper flange of the channel section. A lowec flange 82 projects upwa~dly fcom the edge of the lowec flange of the channel section. The sub-frame has an uppec end pivotally connected to the standacds 52 of the reac ~uppoct 50. The cails 72 of the sub-fcame ace supported on the fcont standacds 34 by the rollecs 40. Consequently, the sub-frame may be shifted from a position projecting focwardly from the floating body 12 and sloping downwardly as illustrated in Figuce 1 to a genecally ho~izontal position above the floating body by extending the hydraulic cylinders 54 and winding in the cables 42 on the winches 48 to raise the roller 40.
The weed pulling assembly also includes a main frame 84 with two side rails 86 joined by transverse end members 88. Cross-bcacing 90 is used to stiffen the main frame. The rails and end membecs are channel sections while the ccoss bcacing i9 angle sections.
Secured to the rails 86 at the uppec ends ace respective collecs 92 mounted on the rails by supports 94. The collecs engage in the rails 72 of the sub-frame 70, AS
illus~cated most pacticulacly in Figure 7. The collers are cetained in the rails 72 by the flanges 80 and 82. Sevecal additional rollecs 96 ace ~paced along the undecside of each cail 86 and ace mounted thereon by supports 98. The rollecs 96 engage on the ~ops of the cails 92, between the flanges 78 and 80.
~ t the uppec end of the main frame is a cross-shaft 100 snounted on the fcame in bearings 102. The shaft caccies thcee spcockets 104 spaced along the shaft and a dcive spcocket 105 at one end. The dcive spcocket 105 is dciven by a spcocket 106 through a chain 107. The sprocket 106 is dciven by an hydraulic motoc 108 mounted on the main fcame ~4. A lowec ccoss-shaft 110 is mounted on the lowec end of the main fcame 84 by bearings 114. It carcies three spcockets 114 that align with the sprockets 104 of the upper shaft 100. At the lowec end of the main fcame 84 ace two wheels 116 that pcoject somewhat beyond the end of the main frame.
Thcee chains 118 ace engaged acound the respective pairs of spcockets 104 and 114. These chains cacry a secies of ccoss bars 120, the constcuction of which is illustrated most particulacly in Figuce 9. Each cross bac includes an angle iron 122 with one flange secured to the 2 ~ 3 chains and the second flange p~ojecting fcom the plane of the chains. The second flange carcies a secies of V-shaped teeth so that the front edge of the cross bac is configured as a secies of V-shaped notches 126. The teeth are pcefecably sharpened along the leading edges so that they will g~ip ve~etation.
At the lower end of the main frame 84 is a ceel 128 which extend~ across the end of the Ecame. The reel includes a support 130 at eithec end mounted on the frame and a cross shaft 132 is mounted on the suppocts. Radial acms 134 are mounted on the shaft and are suppocted in a crufiform, orthogonal accay by a series of struts 136. The arms caccy the four rakes 138, each of which consists of a shaft 140 carrying a secie~C of spring tines 142. The reel is dciven from the lowec shaft 110 of the main fcame using a sprocket 144 on the lower shaft, a sprocket 146 on the ceel shaft 132 and idler sprocket 148 positioned above the sprocket 146. A chain 150 is engaged acound the spcocket 144 and the idlec 148 and engages the sprocket 146 on the outside, so that the reel and the lowec shaft rotate in opposite dicections.
The floating body 12 cacries a wagon 152 that rests between the two floats 14, below the weed pullec 32. The wagon has a cectangular base 154 wi th a floor 156 having a - , , J3 i~J ~
pattern of pecorations therethrough. The base has vertical sides 160 and vertical ends 162. Above the Rides 160 are flaiced side panels 164 that extend out ovec the top of the floats 14. The wagon is equipped with two wheels 166 and a tongue 168 so that it can be coupled to a towing vehicle.
In use of the dcedger, the initial position of the equipment is the transport position as il.lu.~tcated in Figure 2. As shown in that drawing, the rear suppoct 50 is supported in a veftical position by the hydraulic cylinders 64.
The rollecs 40 ace caised to adjacent the top of the front standards 34. This positions the sub-frame 70 in a horiæontal po~ltion. The cable 61 from the winch 60 on the reac support 50 is wound in over the sheave 62. The end of this cable is coupled to the main frame 84 and draws the main ~came to the reac as illustrated in Figuce 2. To adopt the working position the winchs 48 ace opecated to pay out the cables 42 and lower the rollers 40 to lower the forwacd end of the sub-fcame 70 to adjacent the deck of the floating body 12. The hydraulic cylindecs are then opecated to pivot the rear support 50 forwardly so that the leading end of the pulling unit 32 is in :
the wate as illustrated in Figure 1. The main frame may then be loweced down to working level by paying out on the winch 60.
When the wheels 116 on the main fcame engage the bottom of the _ g _ :
`
2 ~ v 2 3 body of watec the mainfcame is in its wocking position and is capable of colling up or down on the sub-frame by virtue of the collecs 92 and 96. The wheels 116 suppoct the main frame at the pcoper operating level, so that as the chains 118 ace d~iven, the cross bafs 120 come into a weed pulling position extending focwacdly from the bottom of the main fcame. At this position the reel 128 cakes the weeds into the cross bar so that it is firmly gripped by the wedging action of the V-shaped notches. The chains then transport the cross bars up the top of the main fcame, as a conveyoc, and dcop the weeds off at the top end into the wagon 152. When the wagon is full of weeds, the weed pulling mechanism can be moved to its 4cansport position as illustrated in Figure 2 and the wagon drawn off the floating body foc tcansport to a weed disposal location. A
replacement wagon may be installed in the intecim.
With the weed dredger desccibed, the weed engaging bars engage the weeds vecy close to the bottom of the bed in which they ace gcowing so that pulling on the weed at this location will have little tendancy to teac the vegetation cathec than uprooting it. The spcing tines on the reel ensuce that the vegetation is ficmly engaged in the V-notches of the cross-bacs.
While one embodiment of the pcesent invention has 2~D923 been described in the focegoing, it is to be undec3tood that other embodiments ace possible within the scope of the invention. The invention is to be considered limited 301ely by the scope of the appended claims.
FIELD OF_THE INVENTION
The pcesent invention relates to weed dredgers and more pacticularly ko a dcedger for removing underwater vegetation.
BACKGROUND
Cucrently used undecwatec weed removal equipment commonly uses a sickle bar cutter for cutting of the weeds near the bottom of the body of water. This can have the countec pcoductive effect of producing inccea~ed weed growth.
Consequently, cectain proposals have been made for equipment that will uproot the weeds. These ace generally complex devices that may involve engaging and pulling on the uppec gcowth of the weed oc scarifying the weed bed. Pulling on the upper gcowth may tear the weeds without uprooting them, while scacifying the bed requires a powerful dcive to genecate the necessacy fo~ce.
The pcesent invention celates to a novel weed pullec.
SUMMARY OF THE INVENTION
Accocding to one aspect of the pcesent invention there is pcovided a weed dredgec compcising:
- weed engaging means for engaging under watec weeds adjacent the bottom of a body of water;
- weed pulling means foc drawing the weed engaging means upwardly for upcooting weeds engaged theceby;
and - weed transpoc~ing means for tcansporting upcooted weeds to a position above the body of watec.
Accocding to anothec aspect of the pcesent invention thece is provided a weed dcedgec comprising:
- a plusality o weed engaging members, - conveyor means for pcesenting the weed engaging member sequentially to a weed engaging position adjacent the bottom of a body of water and foc dcawing the weed engaging mambecs sequentially upwacds fcom the weed engaging position.
The weeds ace prefecably engaged by an elongate bar with v-shaped notches along its fcont edge. A ceel may be used to dcaw the weedq firmly into the notches so that when the bar is dcawn upwacdly the weed is dcawn with it, root and all.
In pcefecred embodiments, the weeds are dischacged into a wagon on the dcadgec, so that the weed filled wagon ~c-n be drawn from the dredger and transported to a disposal site. Thi= minimizes the amount of weed handling cequiced.
Othec beneficial charactecistics of the presently preferred embodiment of the invention will become apparent as the following descciption pcoceeds.
~RIEF DESCRIPTION OF THE DRAWINGS
In the accompanying drawings, which illustrate an exemplory embodiment of the present invention:
Figure l is a side elevation of a dredgec in its wocking position;
Figure 2 is a side elevation of the dredger in its transport position;
Figure 3 is a f~ont elevation of the dredger in the transport position;
Figure 4 is a plan view of the dcedger;
Figuce 5 is a plan view of a conveyor sub-fcame;
Figure 6 is a plan view of a conveyor main-fcame;
Figuce 7 is a cross-sectional along line VII-VII
of Figure 4;
Figure 8 is an isometric view of a ceel;
Figure 9 is an isometric view of a conveyoc ccoss bac; and Figure lO is an isometric view of a wagon.
DETAI~ED DESCRIPTION
Referring to the accompanying drawings, especi.11y to Figures 1 and 2; there i6 i11ustcated a dcedgec 2 ~
10 that includes a floating body 12 consisting of two spaced apart, pacallel floats 14, each of L-shaped cross-section as illustcated most pacticularly in Figure 3. The floats are coupled by cross-~eams 16 so as to focm a single unit.
At the cear of the floating body is a paddle wheel 18, fitted into the space between the two floats 14. The paddle wheel i9 driven by an hydcaulic motor 20 poweced by a power unit 21 that is al~o used to supply hydcaulic pcessuce foc opecating the complete dcedgec. The unit 21 is mounted on a platform 22 bcidging the two floats 14 immediately in front of the paddle wheel. Two rudders 24 are fitted to the floating body behind the cespective floats 14.
Mounted on the platfo~m 22, immediately in fcont of the powec unit 21 is a tower 26 cacrying an opecator's chaic 28 and a set of contcols 30 foc contcolling the opecations of the dredgec.
At the fcont of the floating body is a weed pulling assembly 32. This includes two front standacds 34 on ; ~ opposite sides of the body 12 and supported in position by cespective angle bcaces 36. Each standacd cacries a slide 38 that will slide along the standacd fcom top to bottom. The slide caccies a roller 40 on the inside for pucpo es that will be discussed in the following.
; - 4 -A cable 42 is connected to the slide 38 and extends up the standard 34 and passes over a sheave 44 adjacent the top end of the standard. Ecom the sheave 44, the cable runs down the centre o~ the standa~d and ovec a sheave 46 adjacent the bottom. The end of the cable is wound on an hydraulically operated winch 48.
The floating body 12 also carcies a cear support 50 that includes two standacds 52 joined by an upper cross bar 54. The ccoss bar and the standards ace braced by angle bcaces 56. At the lower end of each standacd 52 it is connected to the top of the floating body 12 by a pivot 58. One of the standacds 52 caccies a winch 60 and a sheave 62 foc purposes that will be de~cribed in the following.
The pivoting of the rear support 50 is controlled with two hydcaulic cylinders 64, one on each ~ide of the floating body. Each cylinder is connected to a respective one of~ the standacds by a lug 66 on the standacd and a pin (not shown). The cylindec is pivotally mounted on the floating body 12 by a cylindec mount 68.
The standards 34 and the rear suppoct 50 carry ths weed puller and conveyor assembly 32. This includes a sub-fcame 70 with two elongate cails 72 joined by end members 74 and cross bcacing 76. The rails 72 and the end membecs 74 :
_ 5 _ ' ace channels, while the cross bLacing is angle section. As illustcated most pacticularly in Figure 7, each of the ~ails i~
equipped with a flange 78 projecting upwardly along its top, inner edge. A second flange 80 extend along the top outer edge and extends both above and below the upper flange of the channel section. A lowec flange 82 projects upwa~dly fcom the edge of the lowec flange of the channel section. The sub-frame has an uppec end pivotally connected to the standacds 52 of the reac ~uppoct 50. The cails 72 of the sub-fcame ace supported on the fcont standacds 34 by the rollecs 40. Consequently, the sub-frame may be shifted from a position projecting focwardly from the floating body 12 and sloping downwardly as illustrated in Figuce 1 to a genecally ho~izontal position above the floating body by extending the hydraulic cylinders 54 and winding in the cables 42 on the winches 48 to raise the roller 40.
The weed pulling assembly also includes a main frame 84 with two side rails 86 joined by transverse end members 88. Cross-bcacing 90 is used to stiffen the main frame. The rails and end membecs are channel sections while the ccoss bcacing i9 angle sections.
Secured to the rails 86 at the uppec ends ace respective collecs 92 mounted on the rails by supports 94. The collecs engage in the rails 72 of the sub-frame 70, AS
illus~cated most pacticulacly in Figure 7. The collers are cetained in the rails 72 by the flanges 80 and 82. Sevecal additional rollecs 96 ace ~paced along the undecside of each cail 86 and ace mounted thereon by supports 98. The rollecs 96 engage on the ~ops of the cails 92, between the flanges 78 and 80.
~ t the uppec end of the main frame is a cross-shaft 100 snounted on the fcame in bearings 102. The shaft caccies thcee spcockets 104 spaced along the shaft and a dcive spcocket 105 at one end. The dcive spcocket 105 is dciven by a spcocket 106 through a chain 107. The sprocket 106 is dciven by an hydraulic motoc 108 mounted on the main fcame ~4. A lowec ccoss-shaft 110 is mounted on the lowec end of the main fcame 84 by bearings 114. It carcies three spcockets 114 that align with the sprockets 104 of the upper shaft 100. At the lowec end of the main fcame 84 ace two wheels 116 that pcoject somewhat beyond the end of the main frame.
Thcee chains 118 ace engaged acound the respective pairs of spcockets 104 and 114. These chains cacry a secies of ccoss bars 120, the constcuction of which is illustrated most particulacly in Figuce 9. Each cross bac includes an angle iron 122 with one flange secured to the 2 ~ 3 chains and the second flange p~ojecting fcom the plane of the chains. The second flange carcies a secies of V-shaped teeth so that the front edge of the cross bac is configured as a secies of V-shaped notches 126. The teeth are pcefecably sharpened along the leading edges so that they will g~ip ve~etation.
At the lower end of the main frame 84 is a ceel 128 which extend~ across the end of the Ecame. The reel includes a support 130 at eithec end mounted on the frame and a cross shaft 132 is mounted on the suppocts. Radial acms 134 are mounted on the shaft and are suppocted in a crufiform, orthogonal accay by a series of struts 136. The arms caccy the four rakes 138, each of which consists of a shaft 140 carrying a secie~C of spring tines 142. The reel is dciven from the lowec shaft 110 of the main fcame using a sprocket 144 on the lower shaft, a sprocket 146 on the ceel shaft 132 and idler sprocket 148 positioned above the sprocket 146. A chain 150 is engaged acound the spcocket 144 and the idlec 148 and engages the sprocket 146 on the outside, so that the reel and the lowec shaft rotate in opposite dicections.
The floating body 12 cacries a wagon 152 that rests between the two floats 14, below the weed pullec 32. The wagon has a cectangular base 154 wi th a floor 156 having a - , , J3 i~J ~
pattern of pecorations therethrough. The base has vertical sides 160 and vertical ends 162. Above the Rides 160 are flaiced side panels 164 that extend out ovec the top of the floats 14. The wagon is equipped with two wheels 166 and a tongue 168 so that it can be coupled to a towing vehicle.
In use of the dcedger, the initial position of the equipment is the transport position as il.lu.~tcated in Figure 2. As shown in that drawing, the rear suppoct 50 is supported in a veftical position by the hydraulic cylinders 64.
The rollecs 40 ace caised to adjacent the top of the front standards 34. This positions the sub-frame 70 in a horiæontal po~ltion. The cable 61 from the winch 60 on the reac support 50 is wound in over the sheave 62. The end of this cable is coupled to the main frame 84 and draws the main ~came to the reac as illustrated in Figuce 2. To adopt the working position the winchs 48 ace opecated to pay out the cables 42 and lower the rollers 40 to lower the forwacd end of the sub-fcame 70 to adjacent the deck of the floating body 12. The hydraulic cylindecs are then opecated to pivot the rear support 50 forwardly so that the leading end of the pulling unit 32 is in :
the wate as illustrated in Figure 1. The main frame may then be loweced down to working level by paying out on the winch 60.
When the wheels 116 on the main fcame engage the bottom of the _ g _ :
`
2 ~ v 2 3 body of watec the mainfcame is in its wocking position and is capable of colling up or down on the sub-frame by virtue of the collecs 92 and 96. The wheels 116 suppoct the main frame at the pcoper operating level, so that as the chains 118 ace d~iven, the cross bafs 120 come into a weed pulling position extending focwacdly from the bottom of the main fcame. At this position the reel 128 cakes the weeds into the cross bar so that it is firmly gripped by the wedging action of the V-shaped notches. The chains then transport the cross bars up the top of the main fcame, as a conveyoc, and dcop the weeds off at the top end into the wagon 152. When the wagon is full of weeds, the weed pulling mechanism can be moved to its 4cansport position as illustrated in Figure 2 and the wagon drawn off the floating body foc tcansport to a weed disposal location. A
replacement wagon may be installed in the intecim.
With the weed dredger desccibed, the weed engaging bars engage the weeds vecy close to the bottom of the bed in which they ace gcowing so that pulling on the weed at this location will have little tendancy to teac the vegetation cathec than uprooting it. The spcing tines on the reel ensuce that the vegetation is ficmly engaged in the V-notches of the cross-bacs.
While one embodiment of the pcesent invention has 2~D923 been described in the focegoing, it is to be undec3tood that other embodiments ace possible within the scope of the invention. The invention is to be considered limited 301ely by the scope of the appended claims.
Claims
CLAIMS.
(1) A weed dredger comprising:
- weed engaging means for engaging under water weeds adjacent the bottom of a body of water;
- weed pulling means for drawing the weed engaging means upwardly for uprooting weeds engaged thereby;
and - weed transporting means for transporting uprooted weeds to a position above the body of water.
(2) A weed dredger according to Claim 1 wherein the weed engaging means comprise an elongate bar with convergent, weed gripping notches along a front edge thereof.
(3) A weed dredger according to Claim 2 wherein the weed engaging means further comprise a reel positioned along the front edge of the elongate bar for drawing weeds into the notches of the bar.
(4) A weed dredger according to Claim 3 wherein the means for drawing the weed engaging means upwardly comprise a conveyor means carrying the elongate bar.
(5) A weed dredger comprising:
- a plurality of weed engaging members;
- conveyor means for presenting the weed engaging members sequentially to a weed engaging position adjacent the bottom of a body of water and for drawing the weed engaging members sequentially upwards from the weed engaging position.
(6) A dredger according to Claim 5 including transporting means for transporting the dredger through the body of water so as to advance the weed engaging members at the weed engaging position into weeds on the bottom of the body of water.
(7) A dredger according to Claim 6 wherein each weed engaging member comprises an elongate bar with weed gripping notches along a front thereof.
(8) A dredger according to Claim 7 including reel means having an axis of rotation substantially parallel to the weed engaging members and mounted forwardly of the weed engaging position for drawing weeds into the weed engaging members at the weed engagement position.
(9) A dredger according to Claim 8 wherein the reel means comprise a plurality of rake elements parallel to and spaced from the axis of the rotation.
(10) A dredger according to Claim 9 wherein each rake element comprises a plurality of resiliently deflectable tines.
(11) A dredger according to Claim 5 including weed receiving means carried by the dredger for receiving weeds from the conveyor mean (12) A dredger according to Claim 11 wherein the weed receiving means comprise a receptacle adapted to be removed from the dredger with a charge of weeds therein.
(13) A dredger according to Claim 12 wherein the weed receiving means comprise a wheeled receptacle.
(14) A dredger according to Claim 13 wherein the weed receiving means comprise a wagon.
(1) A weed dredger comprising:
- weed engaging means for engaging under water weeds adjacent the bottom of a body of water;
- weed pulling means for drawing the weed engaging means upwardly for uprooting weeds engaged thereby;
and - weed transporting means for transporting uprooted weeds to a position above the body of water.
(2) A weed dredger according to Claim 1 wherein the weed engaging means comprise an elongate bar with convergent, weed gripping notches along a front edge thereof.
(3) A weed dredger according to Claim 2 wherein the weed engaging means further comprise a reel positioned along the front edge of the elongate bar for drawing weeds into the notches of the bar.
(4) A weed dredger according to Claim 3 wherein the means for drawing the weed engaging means upwardly comprise a conveyor means carrying the elongate bar.
(5) A weed dredger comprising:
- a plurality of weed engaging members;
- conveyor means for presenting the weed engaging members sequentially to a weed engaging position adjacent the bottom of a body of water and for drawing the weed engaging members sequentially upwards from the weed engaging position.
(6) A dredger according to Claim 5 including transporting means for transporting the dredger through the body of water so as to advance the weed engaging members at the weed engaging position into weeds on the bottom of the body of water.
(7) A dredger according to Claim 6 wherein each weed engaging member comprises an elongate bar with weed gripping notches along a front thereof.
(8) A dredger according to Claim 7 including reel means having an axis of rotation substantially parallel to the weed engaging members and mounted forwardly of the weed engaging position for drawing weeds into the weed engaging members at the weed engagement position.
(9) A dredger according to Claim 8 wherein the reel means comprise a plurality of rake elements parallel to and spaced from the axis of the rotation.
(10) A dredger according to Claim 9 wherein each rake element comprises a plurality of resiliently deflectable tines.
(11) A dredger according to Claim 5 including weed receiving means carried by the dredger for receiving weeds from the conveyor mean (12) A dredger according to Claim 11 wherein the weed receiving means comprise a receptacle adapted to be removed from the dredger with a charge of weeds therein.
(13) A dredger according to Claim 12 wherein the weed receiving means comprise a wheeled receptacle.
(14) A dredger according to Claim 13 wherein the weed receiving means comprise a wagon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2040923 CA2040923A1 (en) | 1991-04-22 | 1991-04-22 | Underwater weed dredger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2040923 CA2040923A1 (en) | 1991-04-22 | 1991-04-22 | Underwater weed dredger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2040923A1 true CA2040923A1 (en) | 1992-10-23 |
Family
ID=4147452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2040923 Abandoned CA2040923A1 (en) | 1991-04-22 | 1991-04-22 | Underwater weed dredger |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2040923A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5404696A (en) * | 1992-02-10 | 1995-04-11 | Vasby; Oscar A. | Aquatic-weed removal machine |
| CN106385954A (en) * | 2016-08-30 | 2017-02-15 | 岭南新科生态科技研究院（北京）有限公司 | Reaping device for submerged vegetation |
| CN114197428A (en) * | 2022-01-12 | 2022-03-18 | 恒清环境科技有限公司 | Full-automatic river channel rubbish cleaning system |
-
1991
- 1991-04-22 CA CA 2040923 patent/CA2040923A1/en not_active Abandoned
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5404696A (en) * | 1992-02-10 | 1995-04-11 | Vasby; Oscar A. | Aquatic-weed removal machine |
| CN106385954A (en) * | 2016-08-30 | 2017-02-15 | 岭南新科生态科技研究院（北京）有限公司 | Reaping device for submerged vegetation |
| CN114197428A (en) * | 2022-01-12 | 2022-03-18 | 恒清环境科技有限公司 | Full-automatic river channel rubbish cleaning system |
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| Date | Code | Title | Description |
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| FZDE | Dead |