US3777375A - Suction dredge with brush cutting attachment - Google Patents

Suction dredge with brush cutting attachment Download PDF

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Publication number
US3777375A
US3777375A US00221538A US3777375DA US3777375A US 3777375 A US3777375 A US 3777375A US 00221538 A US00221538 A US 00221538A US 3777375D A US3777375D A US 3777375DA US 3777375 A US3777375 A US 3777375A
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Prior art keywords
cutterhead
chipping
trees
chips
brush
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Expired - Lifetime
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US00221538A
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English (en)
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L Smith
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Individual
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
    • E02F3/92—Digging elements, e.g. suction heads
    • E02F3/9212—Mechanical digging means, e.g. suction wheels, i.e. wheel with a suction inlet attached behind the wheel
    • E02F3/9225—Mechanical digging means, e.g. suction wheels, i.e. wheel with a suction inlet attached behind the wheel with rotating cutting elements
    • E02F3/9237—Suction wheels with axis of rotation in transverse direction of the longitudinal axis of the suction pipe
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
    • E02F3/92—Digging elements, e.g. suction heads
    • E02F3/9212—Mechanical digging means, e.g. suction wheels, i.e. wheel with a suction inlet attached behind the wheel
    • E02F3/9225—Mechanical digging means, e.g. suction wheels, i.e. wheel with a suction inlet attached behind the wheel with rotating cutting elements
    • E02F3/9231—Suction wheels with axis of rotation parallel to longitudinal axis of the suction pipe
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
    • E02F3/961—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements with several digging elements or tools mounted on one machine
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2866—Small metalwork for digging elements, e.g. teeth scraper bits for rotating digging elements

Definitions

  • ABSTRACT Apparatus for excavating material such as earth, trees, brush, roots and the like, and removing it as a slurry, to make a lake or enlarge existing waterways, comprising: an underwater dredge having a material-removing cutterhead for digging and collecting material to be dredged which is movable in a to-and-fro, lateral path of travel, suction apparatus for removing the material from the cutterhead in slurry form and transferring it to a remote location, and a chipping wheel assembly movable with said cutterhead for removing an upper layer of earth, reducing the trees, roots, and brush to chips or pieces, and directing the reduced or comminuted material into the path of the cutterhead to be removed thereby to the remote location.
  • an underwater dredge having a material-removing cutterhead for digging and collecting material to be dredged which is movable in a to-and-fro, lateral path of travel, suction apparatus for removing the material from the cutterhead in slurry form and
  • This invention relates to dredging apparatus which is employed to excavate and remove earth from below the surface of the water in a lake, stream, or the like to be dug or enlarged, and more particularly to dredging apparatus which includes mechanism for removing an upper layer of earth and cutting trees, brush and root systems at the banks of the waterway into small chips so that they can be excavated with the earth in the form of a slurry.
  • Underwater dredges have been provided in the past, as exemplified in U.S. Pat. No. 3,094,795 granted June 25, I963 to F. J. Schmidt and U.S. Pat. No. 3,005,273 granted to J. H. Milne on Oct. 24, I961. These prior art dredges are particularly well-suited to deepening existing lakes or digging waterways on lands which are not covered with growing trees and brush.
  • the root system associated with trees and brush, growing in such swamp or bog, is generallyrelatively shallow. It is not possible to economically dredge an area which is overgrown with such a root mass, utilizing the apparatus disclosed in the Schmidt and Milne patents, because the root masses continually wrap around the rotary cutterhead to prevent further removal of earth and plug the suction material removing system. Thus, it is necessary to repeatedly stop the machine and clear the cutterhead and suction system. In addition to being time-consuming, the physical removal of the roots from the cutterhead is particularly difficult to manually accomplish since the machine is operating in water or a relatively soft bog where there is no footing. Moreover, pieces of the roots frequently become wedged in the suction pipe which removes the material from the cutterhead and prevent further dredging.
  • an underwater dredge including a material removing cutterhead for digging and collecting the material to be dredged, means mounting the cutterhead for movement in a to-and-fro horizontal path of travel, additional means mounting the cutterhead for movement in a vertical path of travel to control the depth of the cut taken by the cutterhead, suction means for removing the material from the cutterhead in slurry form and tranferring it to a removed lo cation; and chipping mechanism movable with the cutterhead in the to-and-fro path of travel for removing an upper layer of earth and reducing growing trees, root systems, brush and the like, and directing the particulate material into the path of the cutterhead to be removed thereby in slurry form to the remote location.
  • FIG. 1 is a side elevational view illustrating apparatus constructed according to the present invention
  • FIG. 2 is a top plan view of the apparatus illustrated in FIG. 1;
  • FIG. 3 is a fragmentary, front perspective view illustrating the chipping assembly only
  • FIG. 4 is a side elevational view of the chipping disc only
  • FIG. 5 is an enlarged, sectional plan view taken on about the line 5-5 of FIG. 4;
  • FIG. 6 is a front end elevational view of a chipping knife only
  • FIG. 8 is an opposite end elevational view thereof
  • FIG. 9 isaperspective' view of one of the cutting knives.
  • Apparatus constructed according to the present invention is particularly well adapted for clearing a bog or swamp which is overgrown with brush and trees 10, having a shallow root system 12 in earth E which is under or adjacent water having a level 14.
  • Apparatus constructed according to the present invention includes a floatable hull 16, such as that described in U.S. Pats. Nos. 2,731,741 and 2,944,352, which are incorporated herein by reference.
  • An operators cab, generally designated ll, having an elevated Operators compartment 13 is supported on the hull 16.
  • the hull 16 in.- cludes a forwardly opening well 18 receiving a forwardlydisposed dredge ladder, generally designated 20, pivotally mounted on pivot pins 20a fixed to the hull 16.
  • an A-frame assembly For supporting the dredge ladder 20, an A-frame assembly, generally designated 22, is swingably mounted on pivot pins 24 at the front of the hull 16 and is vertically supported by a cable 19 which is fixed to the on the front of the hull 16.
  • the A-frame assembly 22 mounts a pulley 26 at its upper end and supports the dredge latter 20 by means of a cable 28 trained around the pulley 26 and another pulley 30 mounted on a pulley supporting member 32 fixed to the front end of the dredge ladder 20.
  • the hydraulic drive unit 21 is alternately rotated in opposite directions, the cable 19 is alternately wound and unwound thereon to respectively raise and lower the A-frame assembly 22 and the dredge ladder 20.
  • At least one support cable 34 is also attached to the apex of the A-frame 22 and extends rearwardly to a spud support frame s at the stern of the hull 16.
  • Apparatus for selectively advancing the hull 16 forwardly toward the brush and roots 12 to be removed comprises hinged pairs of spud wells or guides 38, on the stern of the hull 16 for receiving a pair of hydraulically vertically reciprocable spuds 40 and 41, respectively, one of which is releasably anchored in the firm bottom earth E, as illustrated at 50.
  • a winch 25 is provided on the dredge ladder and includes a pair of drums 46 on which a pair of cables are wound.
  • the cables 44 are trained around idler pulleys 47, fixed to the dredge ladder 20, and are fixed to a pair of laterally spaced apart trees or anchors 49 firmly anchored in firm earth E on opposite sides of the bog.
  • the cables 44 are oppositely wound on the drums 46 such that when one of the cables 44 is wound on one of the drums 46, the other is unwound from the other drum 46.
  • Rotatably mounted on the front of the dredge ladder 20 is a rotatable, generally hollo'w, excavating cutterhead, generally designated 52, including a plurality of digging teeth 53 for digging and collecting dirt.
  • a rotatable cutterhead drive shaft 54 is connected with the rotary cutterhead 52 and is driven by a suitable hydraulic motor 56 supported on the ladder 20.
  • a material removing suction pipe 58 having its forward end communicating with the cutterhead 52, is supported on the dredge ladder 20 and is connected at its rearward end to a long, flexible suction sleeve or pipe 60 connected with the inlet side of a primable, dredge suction pump 62 supported on the hull 16.
  • the pump 62 is driven by a suitable Diesel or electric motor 64.
  • An outlet pipe or sleeve 65 is connected to the output side of the pump 62 and delivers the slurry sucked up by the pump 62 to a remote location.
  • the dredge ladder 20 can be lowered sufficiently so that the cutterhead 52 typically lowers to a 20-foot depth below the surface 14 of the water.
  • the dredging apparatus constructed according to the invention includes a chipping disc assembly, generally designated 66 and mounted on'the front end of a boom 68 which is pivotally mounted aside the dredge ladder 20 on the front of the hull 16 by a pair of pivot pins 69.
  • a pair of double acting, hydraulic cylinders 70 are pivotally mounted on the front of the hull 16 by pivot pins 72 and include piston rods 74 pivotally connected,'b y
  • pivot pins 76 to the boom 68 rearwardly to the pivot pins 24 so as to vertically swing the boom 68 and chipping wheel assembly 66 between the inoperative positions, illustrated in solid lines in FIG. 1, and the lowered, operative, brush chipping position also illustrated in chain lines in FIG. 1.
  • each knife 86 comprises a generally U-shaped plate P having its front end relieved or beveled to provide an axially inclined face 86b terminating at its forward end in a generally radially disposed cutting edge C.
  • Each knife plate P also includes radially spaced apart, oppositely inclined surface 860 which radially and axially diverge and terminate in forward cutting edges C bounding the cutting edge C.
  • the edges C and C together define a continuous, U-shaped cutting edge.
  • the cutting edges C radially diverge in an axial direction toward the disc 80 and lie in the same generally radial plane as the cutting edge C.
  • Bolts 86d secure the knives 86 to holders 86e fixed in each opening 86a.
  • the disc 80 is recessed at 86f adjacent each axial opening 86a to receive a portion 862' of the knife holders 86e fixed to the disc 80 by bolts 86g.'
  • Apparatus for driving the chipping disc 80 includes a boom supported fluid operated motor 88, driving a sprocket wheel 90, having a drive chain 92 trained therearound and a sprocket wheel 94 fixed to the chipping disc drive shaft 82.
  • the shield 78 includes a rearwardly flaring deflector shield portion 93 for deflecting the chipped material, sped rearwardly and radially by the chipping wheel 80, in a downward path of travel.
  • the side 93a of the shield 93 remote from the chipping knives 86 is flared laterally outwardly (see FIG. 3) to enhance the lateral deflection of the chipped material toward the cutterhead 52.
  • planar chipping wheel 80 is inclined relative to a vertical plane at an angle typically about 15 to facilitate the chipping of vertical trees, and longitudinally inclined, also typically about 15, relative to the longitudinal extent of booms 20 and 68. This enhances bunching of the material to hold it for chipping.
  • Each of the disc supported cutting knives 86 will always take a cross grain out whether the tree or the like is vertically disposed of has been cut and is lying on the earth and thus breaks the material being cut into small chips
  • the spiral arrangement of the knives 86 also reduces the horsepower required to drive chipping disc 80 since only a small radial portion of the total available cutting length of all knives'86 is .in position'to cut at any one time. Also, when the chipthe knife segments 86 tend to pump the water in which the wood is submerged rearwardly toward the shield 93.
  • the individual knife segments 86 pump substantially less water than would a knife blade having a radial length equal to the length of the individual knife seg ments 86 and this, of course, also reduces the power requirements of the chipping disc driving motor 88.
  • the chipping disc 80 is spaced forwardly of the rotary excavating cutterhead 52 so as to reduce all of the brush, trees, and roots 12 to chips prior to the cutterhead 52 removing the earth therearound. As FIG. 1 indicates at x, the disc 80 removes the upper layer of earth to a place below the water line so that cutterhead 52 is always operating under water.v
  • the cutting and chipping disc 80 is of such a diameter that when the chipping assembly is in the operative position illustrated in chain lines in FIG. 1, the bottom of the chipping disc 80 will be below the root system 12 and the disc 80 will not have to be lowered below the position shown in chain lines in FIG. 1 to remove the root system.
  • One of the spuds 40 and 41, for example spud 40, on which the stern of the hull 16 is pivoted, is driven into the earth E while the other is removed from the earth.
  • the winch 25 is then initially operated to swing the hull 16, the cutterhead supporting dredge ladder 20, and the chipping wheel support boom 68, in the lateral direction represented by the arrow a.
  • the trees and brush l0 and roots 12 will be forced toward the brush therebehind, which provides backing therefor, permitting the trees and brush to be bunched so that the knives 86 can chip the trees, brush and roots in the path of the chipping disc 80, into small chips or fragments, and direct them axially through the slots 86a and rearwardly to be laterally and downwardly deflected by the shield 93 toward the rearwardly disposed cutterhead 52.
  • the dredge ladder 20 and rotary excavating cutterhead 52 are at this time-typically initially near the surface of the water, rather than in the position shown in FIG. 1, for example, in the positions illustrated in chain lines at 52' in FIG. 1, to remove-earthadjacent the surface of the water.
  • the trees and'roots which may have been present in the area being dredged by the cutterhead 52 have been previously cut into small chips by the chipper wheel 80 and the top layer of earth has been also removed by disc 80, as the chipping wheel 80 always precedes the cutterhead 53 to cut any wood trees, brush or the like into small chips which can be easily removed by the dredge cutterhead 52 and suction mechanism 60.
  • the cutterhead 52 will remove a swath of earth as it swings in its path of travel represented by the arrow a.
  • the winch is reversed and the hull 16 is swung in the opposite direction represented by the arrow b.
  • the dredge ladder 20 Prior to swinging the hull l6 ina return path, the dredge ladder 20 is lowered so that the cutterhead 52 is in the lowered position illustrated at 52".
  • The'chipping assembly 66 is, however, raised from the lowered cutting position, illustrated in chain lines (FIG. 1), to the inoperative position, illustrated in solid lines (FIG. 1), as the cutterhead 52 is swung in the return path of travel represented by the arrow b.
  • the winch 25 is again reversed to swing the hull in the lateral direction a.
  • the dredge ladder 20 Prior to the hull l6 commencing its return in the swinging path of travel a, the dredge ladder 20 is again lowered to move the cutterhead 52 to the position illustrated in solid lines (FIG. 1) to cut another deeper swath of earth which is removed as a slurry through the suction pipes 58, 60 and 65. During the second swinging path a, however, the cutting wheel remains in the raised position illustrated in solid lines (FIG. 1).
  • the dredge ladder 20 can be repeatedly lowered as the winch 25 alternately swings the hull 16 in the to-and-fro path of travel until the earth has been excavated to the proper depth. Alternatively, it would be possible in some instances to start at the bottom and move upwardly with cutterhead 52.
  • the spud 41 is driven into the bottom 50 when the hull 16 is in the position 16" and the other spud 40 is removed from the earth.
  • the hull 16 will then swing about the spud 41, which is now in the forwardly advanced position illustrated at 41', and the entire apparatus will be moved forwardly a distance equal to the distance between the spud positions 41 and 41'.
  • the dredge ladder 20 is raised to a position such that the rotary cutterhead 52 is again in the position illus trated at 52' and the chipping assembly 66 is lowered so that the chipping wheel 80 is in the operative brushcutting position illustrated in chain lines in FIG. 1 and the operation is repeated.
  • the sequence is repeated until a basin, lake, or the like has been fully formed.
  • suction means associated with the dredge means for removing said material from said cutterhead in a slurry form and tranferring it to a remote location;
  • chipping means on said dredge frame horizontally movable in a horizontal path of travel, for reducing trees, roots, brush, and the like growingon the bank to chips and fragments and directing the chipped material to a location for removal by said cutterhead and said suction means to said remote location;
  • said chipping means including a rotary chipping member having at least one chipping knife for reducing said trees, roots, brush and the like to chips;
  • said chipping knife includes a composite cutting edge comprising a first generally radially disposed cutting edge portion and additional radially spaced cutting edge portions oppositely inclined to said first cutting edge portion at opposite ends thereof for cutting chips.
  • said rotary chipping member comprises a rotatable disc having a plurality of spirally arranged, axial slots therethrough;
  • a plurality of chipping knives are provided on said disc including generally U-shaped cutting edges for cutting chips on one side of said disc and propelling them through said slots to the other side of said disc.
  • said knives each include an axially inclined firstsurface terminating in a generally radially disposed forward cutting edge and radially spaced surfaces which diverge from said first surface and terminate in radially spaced cutting edges inclined to said forward cutting edge.
  • said chipping means includes a plurality of spirally arranged chipping knives.
  • said chipping means includes a rotatable chipping disc mounting a plurality of circumferentially and radially spaced chipping knives.
  • said chipping means comprises deflector means for receiving the chipped material from the chipping disc and deflecting it downwardly toward the cutterhead.
  • Apparatus for excavating material such as earth from an underwater basin and reducing trees, brush, roots, and the like growing on the bank of the basin to chips which are removed as excavated material to enlarge the basin comprising:
  • a material moving cutterhead for digging and collecting material to be dredged mounted on said hull; means for moving said cutterhead in a to-and-fro,
  • suction means associated with said hull for removing said material from said cutterhead in slurry form and transferring it to a remote location;
  • chipping means on said hull movable in a horizontal path with said cutterhead for reducing trees, roots, brush and the like growing on the bank to chips and fragments and directing the chipped material to a location for removal by said cutterhead and said suction means to said remote location;
  • said chipping means includes an upstanding, rotary chipping disc, rotatable about an axis and having at least one axial chip slot therethrough, and at least one chip ping knife adjacent said slot for chipping said material into chips and hurling them through said slot.
  • Apparatus for excavating material such as earth from an underwater basin and reducing trees, brush, roots, and the like, growing on the bank of the basin, to chips which are removed as excavated material, to enlarge said basin comprising:
  • a material removing cutterhead thereon for digging and collecting material to be dredged; means for moving the cutterhead in a to-and-fro horizontal path of travel;
  • suction means associated with the dredge means for removing said material from said cutterhead in slurry form and transferring it to a remote location;
  • chipping means on said dredge frame disposed forwardly of and at a higher level than said cutterhead, movable in a horizontal path of travel for reducing trees, roots, brush, and the like to be dredged to chips and fragments;
  • deflector means carried for movement with the chipping means for receiving the chipped material from said chipping means and deflecting'it laterally and downwardly to a location for removal by said cutterhead and said suction means to said remote location.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Earth Drilling (AREA)
US00221538A 1972-01-28 1972-01-28 Suction dredge with brush cutting attachment Expired - Lifetime US3777375A (en)

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US22153872A 1972-01-28 1972-01-28

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JP (1) JPS5017774B2 (pt)
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3845796A (en) * 1973-06-14 1974-11-05 C Moore Root cutter
US4084334A (en) * 1975-04-15 1978-04-18 Ballast-Nedam Groep N.V. Suction dredge with swell compensating ladder mount
US4517754A (en) * 1984-03-28 1985-05-21 Deal Troy M Cutterhead attachment for a dredge
US20030164123A1 (en) * 2002-03-01 2003-09-04 Leng Lou-Hao Table with leg lock
US9233375B2 (en) 2011-03-29 2016-01-12 Richard S. Kennedy Wood chipper, control system therefor, and method thereof
US9981405B2 (en) 2011-03-29 2018-05-29 Bandit Industries, Inc. Wood chipper, control system therefor, and method thereof
US10589290B2 (en) 2016-04-06 2020-03-17 Bandit Industries, Inc. Waste processing machine feed assist system
US10619324B1 (en) * 2019-01-17 2020-04-14 Placement Area Solutions, LLC Placement area renewal systems and methods
ES2828849A1 (es) * 2019-11-27 2021-05-27 Heliopol S L U Maquina de dragado anfibia

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU238420A1 (ru) * Государственный всесоюзный проектный институт проектированию УСТРОЙСТВО дл БЕЗЪЯКОРНОГО ПАПИЛЬОНИРОВАНИЯ ЗЕМЛЕСОСНОГО СНАРЯДА
US660956A (en) * 1900-04-23 1900-10-30 Isaac O Gordon Excavating apparatus.
US867788A (en) * 1907-02-08 1907-10-08 George Mcclellan Brown Dredging-machine.
DE390694C (de) * 1922-08-05 1924-02-22 Julius Mohs Knochenschnitzelmaschine
US3011535A (en) * 1960-06-20 1961-12-05 Budd W Andrus Chip cutter blade
US3297067A (en) * 1964-12-09 1967-01-10 Carthage Machine Company Inc Cutting apparatus for chippers
US3542302A (en) * 1968-09-11 1970-11-24 Frank Louis Salzmann Jr Wood chipper disc and knife mounting
US3661331A (en) * 1969-09-08 1972-05-09 Earl Ballew Wood chipper

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU238420A1 (ru) * Государственный всесоюзный проектный институт проектированию УСТРОЙСТВО дл БЕЗЪЯКОРНОГО ПАПИЛЬОНИРОВАНИЯ ЗЕМЛЕСОСНОГО СНАРЯДА
US660956A (en) * 1900-04-23 1900-10-30 Isaac O Gordon Excavating apparatus.
US867788A (en) * 1907-02-08 1907-10-08 George Mcclellan Brown Dredging-machine.
DE390694C (de) * 1922-08-05 1924-02-22 Julius Mohs Knochenschnitzelmaschine
US3011535A (en) * 1960-06-20 1961-12-05 Budd W Andrus Chip cutter blade
US3297067A (en) * 1964-12-09 1967-01-10 Carthage Machine Company Inc Cutting apparatus for chippers
US3542302A (en) * 1968-09-11 1970-11-24 Frank Louis Salzmann Jr Wood chipper disc and knife mounting
US3661331A (en) * 1969-09-08 1972-05-09 Earl Ballew Wood chipper

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3845796A (en) * 1973-06-14 1974-11-05 C Moore Root cutter
US4084334A (en) * 1975-04-15 1978-04-18 Ballast-Nedam Groep N.V. Suction dredge with swell compensating ladder mount
US4517754A (en) * 1984-03-28 1985-05-21 Deal Troy M Cutterhead attachment for a dredge
US20030164123A1 (en) * 2002-03-01 2003-09-04 Leng Lou-Hao Table with leg lock
US9233375B2 (en) 2011-03-29 2016-01-12 Richard S. Kennedy Wood chipper, control system therefor, and method thereof
US9636687B2 (en) 2011-03-29 2017-05-02 Bandit Industries, Inc. Wood chipper, control system therefor, and method thereof
US9656269B2 (en) 2011-03-29 2017-05-23 Bandit Industries, Inc. Wood chipper, control system therefor, and method thereof
US9981405B2 (en) 2011-03-29 2018-05-29 Bandit Industries, Inc. Wood chipper, control system therefor, and method thereof
US10589290B2 (en) 2016-04-06 2020-03-17 Bandit Industries, Inc. Waste processing machine feed assist system
US10675636B2 (en) 2016-04-06 2020-06-09 Bandit Industries, Inc. Waste processing machine winch docking safety system
US10619324B1 (en) * 2019-01-17 2020-04-14 Placement Area Solutions, LLC Placement area renewal systems and methods
ES2828849A1 (es) * 2019-11-27 2021-05-27 Heliopol S L U Maquina de dragado anfibia

Also Published As

Publication number Publication date
JPS4883639A (pt) 1973-11-07
NL7301071A (pt) 1973-07-31
BR7300620D0 (pt) 1973-12-11
NL153963B (nl) 1977-07-15
JPS5017774B2 (pt) 1975-06-24

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