US3861602A - Brush chipper - Google Patents

Brush chipper Download PDF

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Publication number
US3861602A
US3861602A US376959A US37695973A US3861602A US 3861602 A US3861602 A US 3861602A US 376959 A US376959 A US 376959A US 37695973 A US37695973 A US 37695973A US 3861602 A US3861602 A US 3861602A
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US
United States
Prior art keywords
disc
axis
chipping
feed
chips
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 - Lifetime
Application number
US376959A
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English (en)
Inventor
Leward N Smith
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Morbark Industries Inc
Original Assignee
Morbark Industries Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Morbark Industries Inc filed Critical Morbark Industries Inc
Priority to US376959A priority Critical patent/US3861602A/en
Priority to CA200,959A priority patent/CA1011624A/en
Priority to AU70402/74A priority patent/AU466856B2/en
Priority to GB2805974A priority patent/GB1441060A/en
Priority to IT24602/74A priority patent/IT1015536B/it
Priority to DE19742462332 priority patent/DE2462332A1/de
Priority to DE19742431690 priority patent/DE2431690C3/de
Priority to SE7408829A priority patent/SE7408829L/xx
Priority to FR7423415A priority patent/FR2235771B1/fr
Priority to FI2070/74A priority patent/FI207074A7/fi
Priority to BR5572/74A priority patent/BR7405572D0/pt
Priority to NO742456A priority patent/NO742456L/no
Priority to JP49076921A priority patent/JPS5036701A/ja
Priority to IN1716/CAL/1974A priority patent/IN142515B/en
Application granted granted Critical
Publication of US3861602A publication Critical patent/US3861602A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G3/00—Cutting implements specially adapted for horticultural purposes; Delimbing standing trees
    • A01G3/002—Cutting implements specially adapted for horticultural purposes; Delimbing standing trees for comminuting plant waste
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
    • B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
    • B27L11/02—Manufacture of wood shavings, chips, powder, or the like; Tools therefor of wood shavings or the like

Definitions

  • rotary chipping mechanism having a chipping disc mounting only a single, generally radially disposed, chipping knife which is angularly disposed relative to the feed path to draw the material forwardly.
  • the apparatus also includes drive mechanism operating the feed References Clted mechanism and disc at a correlated rate which con- UNITED STATES PATENTS siders the angular disposition of the single knife to 885,177 Powell 241/92 move material to the disc a an opt ate causing 1,947,728 the knife to reduce the material to chips.
  • chipping discs mount a plurality of circumferentially spaced, radially disposed cutting or chipping knives and include a plurality of radially disposed slots extending axially through the disc to axially pass the chips.
  • Such discs are normally keyed on precision machined drive shafts. Because of the manner in which such prior art shafts and discs are coupled, the slots and cutting knives cannot intersect the central axis of the chipping disc.
  • the rotational velocity of a multi-bladedisc is decreased so that the feed rate at which the material is drawn into the machine matches the manual feed capability of an individual, the knives cut through the wood at such a low speed that they tear and crush the fiber edges of the chips, rather than cleanly cutting the wood into chips. Such crushed chips are unacceptable for many applications and are not saleable for them.
  • Another object of the present invention is to provide apparatus of the type described having a rotary chipping disc with a generally radially disposed cutting knife extending along an axial slot which extends through the disc for passing chips cut by the knife.
  • the disc includes a radially disposed, axial slot intersecting the rotational axis of the disc and a chipping knife having a leading edge extending through the rotational axis, thus permitting a smaller diameter disc to be utilized than has been previously required.
  • the crowding of material into the chipping disc prevents brush and the like from bouncing back, or backfiring, toward the operator. thus resulting in a safer operation.
  • FIG. 1 is a side elevational view of chipping apparatus constructed according to the present invention, parts of the frame being broken away to more clearly illustrate other portions of the apparatus;
  • FIG. 2 is a partly sectional, rear elevational view of the chipping apparatus, taken along the line 22 of FIG. 1, part of a feed apron for supporting material to be chipped being broken away to more clearly illustrate an overhead feed roll",
  • FIG. 3 is a rear end view particularly illustrating the chipping disc, taken along the line 3-3 of FIG. 1;
  • FIG. 4 is a top plan view, taken along the line 44 of FIG. 1;
  • FIG. 5 is a schematic diagram of a fluid control circuit for controlling the operation of the apparatus illustrated in FIGS. l-4.
  • Apparatus constructed according to the present invention is mounted on a portable frame, generally designated F, supported for movement by groundengaging wheels 10 mounted on a frame supported axle 11, as usual.
  • the frame F includes a hitch (not shown) for attachment to a draft vehicle, such a tractor or the like.
  • the frame F mounts a chipper-housing or casing, generally designated 12, including a pair of axially spaced, from and rear end walls 14 and I6 spanned by a generally cylindrical side wall 18.
  • a chip discharge spout 20 is mounted atop the wall 18 for directing chips S to a discharge location.
  • a cutter head or chipper assembly is mounted on a drive shaft, generally designated 22,
  • the chipper head assembly 26 includes a cylindrical chipper disc 32 having its forward face 32a welded, at 34 (FIG. 3) to the drive shaft 22, and a plurality of equiangularly spaced fan blades 28 welded at 29 to the shaft 22 and to the forward face 32a of the chipper disc 32. It is important to note that the shaft 22 is fixed to the fan blades 28 and to the disc 32 and does not journal the disc 32 or the fan blades 28.
  • the chipper disc 32 includes a single, radially disposed chip passing slot 36 located substantially equiangularly between a pair of the fan blades 28.
  • the slot 36 which passes axially through the disc 32, extends radially from the periphery of the disc, and terminates a slight distance d radially beyond the rotational axis a of the disc.
  • the weld 34 between the chipping disc 32 and the shaft 22 is interrupted by the slot 36.
  • a radially disposed, axial recess 39 is provided in the chipping disc 32 adjacent the slot 36 and receives a radially disposed wood cutting or chipping knife 40, which is fixed to the disc by a plurality of bolts 42, for cutting brush, trees, branches, and the like, generally designated B, into chips S that axially pass through the slot 36.
  • the leading edge 40a of the wood cutting knife 40 which is axially upstream or rearward of the upstream or rearward face 32b of the cutting disc 32, intersects the rotational axis of the disc 32.
  • the radially inner end of the leading cutting edge 40a projects a small distance d, i.e. onefourth inch, beyond the rotational axis a of the disc 32.
  • the chip size can be varied by varying the width of the cutting knife 40.
  • the rear end wall 16 of the chipper housing 12 includes an axial opening 27 which, for a 3 foot diameter cutting disc 32, may typically be l6 inches wide and l inches high.
  • the lower border surface 27a of the opening 27 is generally horizontal and positioned approximately 1% inches below a horizontal plane p intersecting the rotational chipper disc axis a. As the cutting knife moves downwardly, it will force the material B being chipped against the border surface 27a which acts as an anvil. If the border surface 27a is spaced more than 1 /2 inches above or below a horizontal plane intersecting the axis a, the material B will be thrown sidewisely, either toward or away from the axis a depending on the relative positions of the various parts and the material being chipped.
  • Apparatus for rotating the cutterhead drive shaft 22 and the cutterhead assembly 26 comprises a belt 43 which is trained around a pulley 44, fixed to the end of the drive shaft 22, and a pulley 46 fixed to the end of a shaft 48 journaled in frame supported bearings 49.
  • the shaft 48 is coupled to a drive shaft 49a via a universal coupling member 52 which is driven by a frame supported, gasoline powered engine, schematically designated 50.
  • a feed assembly generally designated 54, comprising a pair of axially spaced apart mounting plates 56 (F168. 2 and 4), spanned by a pair of side plates 60 and 62.
  • the feed assembly 54 is swingably mounted on a shaft 58 having a rotational axis b positioned at one side of, and extending generally parallel to, the chipping disc axis a.
  • the shaft 58 is journaled by frame supported bearings 61.
  • a feed roll is mounted for rotation on the side plates 60 and 62 by a shaft 68.
  • the feed roll 66 is driven by a gear wheel 70 meshing with a gear wheel 72 fixed to the output shaft 71 of a hydraulic motor 74, carried by one of the frame plates 56.
  • the feed roll 66 includes a cylindrical drum 76 having a plurality of circumferentially spaced, toothed or serrated blades or plates 78 on its periphery.
  • the feed roll 66 is driven in the direction represented by the arrow 0 (H6. 1 about the axis x of the shaft 68 to feed limbs.
  • the feed roll 66 is so mounted or extends to a position in which it is positioned on the side of disc axis a opposite axis 12 and overlies the center 0 of the branch B being chipped so that it will be generally longitudinally aligned with the opening 27 in the rear housing wall 16. Since the rotational velocity of the chipping knife portion intersecting the disc axis a is zero, this portion of the knife does not effectively cut large diameter material B. It will, however, sever and dislodge small branches which tend to jam in the radially inner portion of opening 27.
  • the material B tends to be urged radially away from the disc axis a to a position between the periphery and rotational axis of disc 32, by the feed roll 66 which is upwardly, outwardly inclined when it is feeding the material B.
  • the feed assembly 54 also includes a curvilinear chute or support apron 80 for supporting and guiding material B to be chipped for movement, in the direction of the arrow g, toward the chipper disc 32.
  • the apron 80 has a portion 81 adjacent the chipping disc 32 which is forwardly inclined at a l5 angle e to a horizontal plane p and the chipping disc 78 is forwardly inclined at a 30 anglefrelative to a vertical plane v.
  • the included angle between the cutting disc 32 and the terminal portion 81 of the chute 80 thus is 60 and the knife edge will accordingly always avoid taking a perpendicular cross grain cut.
  • Counterweights are fixed to one of the feed assembly side plates 62 to normally downwardly bias the feed assembly 54 to the position illustrated in FIG. 2 against a pair of stops 86 and 88 mounted on the frame F If the material B being chipped increases in diameter, the feed assembly 54 automatically rides up over it, pivoting the entire feed assembly' 54 upwardly to the chain line position illustrated in FIG. 2.
  • a wall 89 is welded between the pair of fan blades 28 which substantially border chip slot 36 and functions as a static balancing device. lt is situated directly axially behind the slot 36 and is of comparable weight to the material removed to form slot 36.
  • control circuit includes a hydraulic pump 90 which is driven by the diesel engine 50 driving the chipping unit 26.
  • the pump 90 is connected in circuit with the hydraulic motor 74 for driving the feed roll 66 of the unit 54.
  • the hydraulic motor 74 may be of the type manufactured by Charllynn Company, of Minneapolis, Minnesota, as Model No. 3000.
  • the pump 90 pumps fluid from a reservoir 92 through a line 93 to a pilot-operated valve, generally designated 94, including a main valve and a pilot valve 96.
  • the valve 94 may be of the type manufactured by Rivett, lnc., of Pewaukee, Wisconsin, as Model No. 6656.
  • valve 94 When the valve 94 is deenergized, fluid flows from the line 93 through the main valve 95 to a line 97, and then to a reservoir 98.
  • the pilot valve 96 is connected between a reservoir 99 and the pump 90 by a line 100, which is connected to the output of the pump 90.
  • a relief valve 101 is connected between the line 93 and a reservoir 106 for relieving the pressure in line 93 when it builds to a predetermined pressure.
  • a solenoid 103 for moving the fluid control spool of the pilot valve 96 to the flow-through position is connected with a suitable source of power, such as a DC. battery 131, which causes the spool of the pilot valve 96 to move to the flow-through position.
  • a suitable source of power such as a DC. battery 131
  • hydraulic fluid will flow from the line 100 through the line 107 to move the control spool of the main valve 95 to the flow-through position so that fluid will flow from the line 93 through the hydraulic motor 74 and then to the reservoir 98 through the line 97.
  • a solenoid 110 on the pilot valve 96 is adapted to be connected across the source of power via a switch 133.
  • the solenoid 110 When energized, the solenoid 110 moves the spool of the pilot valve 96 to the cross-over position so that the hydraulic fluid flows from the line 100 through the line 108 to move the main valve 95 to the cross-over position.
  • fluid from the pump 90 passes through the line 93 and the motor 74, in a reverse direction, to drive the feed roll 66 in the opposite direction.
  • the reversely flowing fluid then passes to the reservoir 98 via a line 93.
  • Both the chipper disc 32 and drive roll 66 are directly responsive to the speed of rotation of the diesel engine 50 and thus the speed of rotation of the drive roll 66 is timed with the rotation of the chipper disc 32. If rotation of the disc is halted by a foreign object, the diesel engine 50 will stop, and thus the feed roll 66 will also stop.
  • the feed roll 66 can be manually independently stopped if desired by manually closing the switch 133 to energize the solenoids 103 and 110.
  • THE OPERATION Material B to be chipped such as branches, limbs,
  • the cutting disc 32 and the feed plate 40 are relatively inclined such that the cutting blade 40 will not cut directly cross-grain, but will cut longitudinally forwardly at an inclined angle not normal to the grain to pull the tree trunks B downwardly and forwardly toward the chipper disc 32 as it cuts therethrough. If the butt end of the limb of a tree B is first inserted, the draw" of the vertically inclined disc 32 alone will cause the machine to be self-feeding. lf non-condensed material, such as branches, brush, and the like, constitute the material B to be cut, the feed roll 66 will tend to bunch the material and cram it toward the disc 32.
  • the rotational speed of the disc 32 which has the single elongate cutting edge 40a, is timed to produce a linear material feed rate in the range 20-85 feet per minute. It has been found that in making standard three-fourth inch length chips, approximately l50 horsepower is required to rotate in a 3-foot diameter chipping blade at a rotational velocity of 1,000 rpm. so that a lO-inch diameter green'branch or the like, which is about maximum diameter for the machine, is drawn in at a feed rate of feet per minute. If the chipper disc 32 is driven at 900 rpm, an optimum feed rate of 51 feet per minute is achieved, the feed rate reducing proportionately with ther.p.m. If the rotational velocity of the disc is lowered such that a feed rate of 20 feet per minute is achieved, only 50 horsepower is required.
  • the disc structure isin axially static balance and wall 89 also is operative to trap chips in view of its position in back of the slot 36.
  • the rotational axis of the feed wheel 66 in operation, is disposed at an angle relative to the edge 27a of the opening 27, when a limb or branch is disposed below it and being fed toward disc 32, the feed wheel 66 tends to crowd the limb or branch being fed radially outwardly relative to the disc axis a and the pivot axis [2, to a position in which the branch B is positioned between the periphery and axis of the disc 32, centered in the opening 27.
  • this camming increases as the diameter of' the limb being fed increases and the angularity of disposition of wheel 66 increases.
  • Apparatus for reducing material such as trees, brush, and the like to chips comprising:
  • chipping means on said frame at said chipping station for cutting said forwardly moving material into chips including a chipping disc, having an upstream rear face and a downstream front face, rotatable about an axis,
  • chipping knife means mounted on said disc for cutting said forwardly moving material into chips at said chipping station as said chipping disc rotates;
  • said disc being unslotted except for a single slot extending from said rear'face to said front face adjacent said knife means to receive and axially forwardly pass said chips;
  • the apparatus of claim 1 including a plurality of generally radially disposed, circumferentially spaced, fan blades mounted to the rear face of said disc for expelling said chips.
  • said static balancing means comprises a radial wall spanning a pair of said fan blades on circumferentially opposite sides of said slot to provide an enclosure for said chips.
  • the apparatus set forth in claim 1 including means for rotating said disc at such a velocity as to draw the material axially toward the disc at achipping rate within the range of 20 to 85 feet per minute.
  • the apparatus set forth in claim 1 including a feed plate upstream of said disc having a feed opening at one lateral side of said axis and providing a generally horizontal support surface for said material being chipped.
  • Apparatus for reducing material such as trees, brush and the like, to chips comprising:
  • a knived chipper disc mounted on said frame at said chipping station for rotation about a vertically inclined axis so that the upper half of said disc is upstream of the lower half of said disc;
  • means for conveying said material to said chipping station including a downwardly inclined material support chute, and
  • endless drive means on said frame above said support chute for vertically engaging the material on said support and moving it forwardly toward said chipper disc;
  • said endless drive means being pivoted for vertical swinging movement about a longitudinal axis at one side of said chute, said endless drive means extending to a position on the opposite side of said vertically inclined axis to urge the material being fed away from said rotational axis and said longitudinal axis.
  • the apparatus of claim 12 including a feed plate upstream of said disc having a feed opening at said opposite side and generally above said rotational axis; said chute being generally longitudinally aligned with said opening, said disc including a chipping knife extending generally radially outwardly from the rotational axis of said disc; and means is provided for driving said disc about said rotational axis in a direction to move said chipping knife in a path to force said material forwardly toward said supply chute.
  • Apparatus for reducing material such as trees, brush and the like, to chips comprising:
  • a knived chipper disc mounted on said frame at said chipping station for rotation about a rotational axis
  • a material supply chute positioned at one side of said rotational axis for directing material to be chipped to a position between the periphery and rotational axis of said disc;
  • means for conveying said material to said chipping station including material support means, and endless drive means on said frame above said support chute for vertically engaging the material on said support means and moving it forwardly toward said chipper disc;
  • said endless drive means being pivoted for vertical swinging movement about a longitudinal axis at the opposite side of said rotational axis and extending to a position on said one side of said rotational axis to urge the material being fed away from said rotational axis and said longitudinal axis.
  • Apparatus for reducing material such as trees. brush, and the like to chips comprising: a frame; a shaft rotatably mounted about a longitudinal axis on said frame; means mounting said shaft on said frame; a generally longitudinally extending feed bed on said frame; a powered feed member for said feed bed for moving material along said feed bed; a reversible drive for said feed member for selectively withdrawing as well as advancing material; a chipper disc, extending in a plane generally crosswise of said feed bed and having axially spaced end faces, fixed to said shaft for rotation therewith, said disc having a working face portion confronting said material on the feed bed which is substantially imperforate except for a single generally radially disposed slot extending from one axial end face of said disc to the other axial end face of said disc; a generally radially disposed single chipper knife blade mechanism on said disc generally adjacent said slot for cutting said material into chips and angularly disposed to said feed bed for axially drawing said material along said feed bed toward said disc;
  • said feed member includes a rotatable roll pivoted for vertical swinging movement about a longitudinal axis at one side of said feed bed and disc axis, and extends to a position on the opposite side of said disc axis at an inclined angle with said feed bed to cam said material radially away from said disc axis.
  • Apparatus for reducing material such as trees, brush, and the like to chips comprising: a frame, a shaft rotatably mounted about a longitudinal axis on said frame; means mounting said shaft on said frame; a generally longitudinally extending feed bed on said frame; a chipper disc assembly, including a disc on said shaft and an entrance chute at one side of said axis, said disc extending in a plane generally crosswise of said feed bed and having axial spaced end faces, fixed to said shaft for rotation therewith, said disc having a working face portion confronting said feed bed which has a generally radially disposed slot extending from one axial end face of said disc to the other axial end face of said disc; a generally radially disposed chipper knife blade mechanism on said disc generally adjacent said slot for cutting said material into chips and angularly disposed for axially drawing said material along said feed bed toward said disc; a subframe mounted on said frame; a powered roll member rotatably mountedon said subframe above said feed bed for moving material along said feed

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Environmental Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)
  • Crushing And Pulverization Processes (AREA)
US376959A 1973-07-06 1973-07-06 Brush chipper Expired - Lifetime US3861602A (en)

Priority Applications (14)

Application Number Priority Date Filing Date Title
US376959A US3861602A (en) 1973-07-06 1973-07-06 Brush chipper
CA200,959A CA1011624A (en) 1973-07-06 1974-05-27 Brush chipper
AU70402/74A AU466856B2 (en) 1973-07-06 1974-06-24 Brush chipper
GB2805974A GB1441060A (en) 1973-07-06 1974-06-25 Apparatus for reducing material to chips
IT24602/74A IT1015536B (it) 1973-07-06 1974-06-28 Sminuzzatrice di sterpaglia
DE19742431690 DE2431690C3 (de) 1973-07-06 1974-07-02 Vorrichtung zum Zerkleinern von manuell zuführbarem Schwachholz
DE19742462332 DE2462332A1 (de) 1973-07-06 1974-07-02 Zufuehrvorrichtung bei einer vorrichtung zum zerkleinern von schwachholz
SE7408829A SE7408829L (ja) 1973-07-06 1974-07-04
FR7423415A FR2235771B1 (ja) 1973-07-06 1974-07-05
FI2070/74A FI207074A7 (ja) 1973-07-06 1974-07-05
BR5572/74A BR7405572D0 (pt) 1973-07-06 1974-07-05 Aparelho aperfeicoado para reduzir materiais tais como arvores galharia cortada arbustos e semelhantes a cavacos
NO742456A NO742456L (ja) 1973-07-06 1974-07-05
JP49076921A JPS5036701A (ja) 1973-07-06 1974-07-06
IN1716/CAL/1974A IN142515B (ja) 1973-07-06 1974-08-01

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US376959A US3861602A (en) 1973-07-06 1973-07-06 Brush chipper

Publications (1)

Publication Number Publication Date
US3861602A true US3861602A (en) 1975-01-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
US376959A Expired - Lifetime US3861602A (en) 1973-07-06 1973-07-06 Brush chipper

Country Status (13)

Country Link
US (1) US3861602A (ja)
JP (1) JPS5036701A (ja)
AU (1) AU466856B2 (ja)
BR (1) BR7405572D0 (ja)
CA (1) CA1011624A (ja)
DE (1) DE2462332A1 (ja)
FI (1) FI207074A7 (ja)
FR (1) FR2235771B1 (ja)
GB (1) GB1441060A (ja)
IN (1) IN142515B (ja)
IT (1) IT1015536B (ja)
NO (1) NO742456L (ja)
SE (1) SE7408829L (ja)

Cited By (29)

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US3944147A (en) * 1974-12-06 1976-03-16 Asplundh Tree Expert Co. Brush chipper
DE2721780A1 (de) * 1976-05-14 1977-11-17 Hitachi Chemical Co Ltd Thermisch haertbare polymerisierbare harzmasse
US4338985A (en) * 1979-10-19 1982-07-13 Georgia-Pacific Corporation Tree and brushwood harvester
US4360166A (en) * 1979-08-29 1982-11-23 Firma Cornes & Co. Ohg Motor-driven shredding apparatus particularly for garden waste
US4390132A (en) * 1981-02-09 1983-06-28 Omark Industries, Inc. Wood chipper
DE3625546A1 (de) * 1986-07-29 1988-02-11 Josef Willibald Geraetekombination zum maschinellen aufbereiten organischer materialien zum zwecke der kompostierung
US4736781A (en) * 1986-08-26 1988-04-12 Morbark Industries, Inc. Stump disintegrator
US4771953A (en) * 1987-02-17 1988-09-20 Morbark Industries, Inc. Retractable anvil chipper
US5005620A (en) * 1990-04-17 1991-04-09 Morbark Industries, Inc. Drum-type wood chipper
DE4014186A1 (de) * 1990-05-03 1991-11-07 Lescha Maschf Gmbh Zerkleinerungsvorrichtung
US5137219A (en) * 1988-02-11 1992-08-11 Wood Technology, Inc. Wood chipper and infeed system
US5667152A (en) * 1995-05-30 1997-09-16 Mooring; Jonathan E. Safety system for a wood chipper
US5680998A (en) * 1996-08-01 1997-10-28 Altec Industries, Inc. Brush chipping machine with in-line drive system
US5692549A (en) * 1996-05-17 1997-12-02 Vermeer Manufacturing Company Feed rollers for chipper
US5692548A (en) * 1996-05-17 1997-12-02 Vermeer Manufacturing Company Wood chipper
US20070001038A1 (en) * 2005-06-30 2007-01-04 Bouwers John T Mechanical four position brush chipper feed control bar
US20070176034A1 (en) * 2006-01-30 2007-08-02 Roozeboom Keith L Machine with snag anvil
US20080237377A1 (en) * 2007-03-28 2008-10-02 Crary Industries, Inc. Feed roller drive for wood chipper
WO2008137249A1 (en) * 2007-05-04 2008-11-13 Vermeer Manufacturing Company Brush chipper with improved feed rollers
US20100126628A1 (en) * 2008-11-26 2010-05-27 Leonard Mark A Wood chipper with improved feed roller and adjustable legs
US20100308144A1 (en) * 2009-06-08 2010-12-09 Daniel James Vroom Material Reducing Apparatus Having Features for Enhancing Reduced Material Size Uniformity
US20110000988A1 (en) * 2009-07-02 2011-01-06 Morbark, Inc. Feed assembly for wood reduction apparatus
WO2016040768A1 (en) 2014-09-12 2016-03-17 R. J. Reynolds Tobacco Company Tobacco-derived filter element
US9950858B2 (en) 2015-01-16 2018-04-24 R.J. Reynolds Tobacco Company Tobacco-derived cellulose material and products formed thereof
US10350608B2 (en) 2016-05-03 2019-07-16 Vermeer Manufacturing Company In-feed systems for chippers or grinders, and chippers and grinders having same
WO2020069595A1 (en) 2018-10-03 2020-04-09 Woodland Mills Inc. Flywheel and paddle assembly for a chipping or shredding apparatus, and an apparatus incorporating same
WO2020128971A1 (en) 2018-12-20 2020-06-25 R. J. Reynolds Tobacco Company Method for whitening tobacco
US11071986B2 (en) 2017-08-15 2021-07-27 Vermeer Manufacturing Company Infeed systems for chippers or grinders, and chippers and grinders having same
US11154087B2 (en) 2016-02-02 2021-10-26 R.J. Reynolds Tobacco Company Method for preparing flavorful compounds isolated from black liquor and products incorporating the flavorful compounds

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3524485A (en) * 1968-08-05 1970-08-18 Morbark Ind Inc Log chipping apparatus
JPS5746531Y2 (ja) * 1976-12-28 1982-10-13
FR2426551A1 (fr) * 1978-05-24 1979-12-21 Landex Appareillage pour la preparation de copeaux a partir de plaquettes
EP0217363B1 (de) * 1981-07-10 1991-04-03 Alois Pöttinger Maschinenfabrik GmbH Holzhackmaschine
JPS61263702A (ja) * 1985-05-17 1986-11-21 浜崎　喜一郎 木材チツパ−

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US885177A (en) * 1907-07-25 1908-04-21 Carthage Machine Company Wood-chipper.
US1947728A (en) * 1931-07-25 1934-02-20 Henry S Mitchell Power-operated feeding device
US2712903A (en) * 1952-10-13 1955-07-12 Murray D J Mfg Co Wood rechipper feeder
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DE2721780A1 (de) * 1976-05-14 1977-11-17 Hitachi Chemical Co Ltd Thermisch haertbare polymerisierbare harzmasse
US4360166A (en) * 1979-08-29 1982-11-23 Firma Cornes & Co. Ohg Motor-driven shredding apparatus particularly for garden waste
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US4390132A (en) * 1981-02-09 1983-06-28 Omark Industries, Inc. Wood chipper
DE3625546A1 (de) * 1986-07-29 1988-02-11 Josef Willibald Geraetekombination zum maschinellen aufbereiten organischer materialien zum zwecke der kompostierung
US4736781A (en) * 1986-08-26 1988-04-12 Morbark Industries, Inc. Stump disintegrator
US4771953A (en) * 1987-02-17 1988-09-20 Morbark Industries, Inc. Retractable anvil chipper
US5137219A (en) * 1988-02-11 1992-08-11 Wood Technology, Inc. Wood chipper and infeed system
US5005620A (en) * 1990-04-17 1991-04-09 Morbark Industries, Inc. Drum-type wood chipper
DE4014186A1 (de) * 1990-05-03 1991-11-07 Lescha Maschf Gmbh Zerkleinerungsvorrichtung
US5667152A (en) * 1995-05-30 1997-09-16 Mooring; Jonathan E. Safety system for a wood chipper
US5692549A (en) * 1996-05-17 1997-12-02 Vermeer Manufacturing Company Feed rollers for chipper
US5692548A (en) * 1996-05-17 1997-12-02 Vermeer Manufacturing Company Wood chipper
US5680998A (en) * 1996-08-01 1997-10-28 Altec Industries, Inc. Brush chipping machine with in-line drive system
US20070001038A1 (en) * 2005-06-30 2007-01-04 Bouwers John T Mechanical four position brush chipper feed control bar
US7543767B2 (en) * 2005-06-30 2009-06-09 Vermeer Manufacturing Co. Methods of constructing a mechanical four position brush chipper feed control bar
US7721981B2 (en) 2005-06-30 2010-05-25 Vermeer Manucaturing Co. Mechanical brush chipper feed control bar
US20070176034A1 (en) * 2006-01-30 2007-08-02 Roozeboom Keith L Machine with snag anvil
US7896274B2 (en) 2006-01-30 2011-03-01 Vermeer Manufacturing Company Machine with snag anvil
US20080237377A1 (en) * 2007-03-28 2008-10-02 Crary Industries, Inc. Feed roller drive for wood chipper
US7780102B2 (en) * 2007-03-28 2010-08-24 Crary Industries, Inc. Feed roller drive for wood chipper
US7546964B2 (en) 2007-05-04 2009-06-16 Vermeer Manufacturing Co. Brush chipper with improved feed rollers
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US20100126628A1 (en) * 2008-11-26 2010-05-27 Leonard Mark A Wood chipper with improved feed roller and adjustable legs
US8307866B2 (en) * 2008-11-26 2012-11-13 Leonard Mark A Wood chipper with improved feed roller and adjustable legs
US20100308144A1 (en) * 2009-06-08 2010-12-09 Daniel James Vroom Material Reducing Apparatus Having Features for Enhancing Reduced Material Size Uniformity
US8245961B2 (en) 2009-06-08 2012-08-21 Vermeer Manufacturing Company Material reducing apparatus having features for enhancing reduced material size uniformity
US9192964B2 (en) 2009-06-08 2015-11-24 Vermeer Manufacturing Company Material reducing apparatus having features for enhancing reduced material size uniformity
US20110000988A1 (en) * 2009-07-02 2011-01-06 Morbark, Inc. Feed assembly for wood reduction apparatus
US8544783B2 (en) 2009-07-02 2013-10-01 Morbark, Inc. Feed assembly for wood reduction apparatus
WO2016040768A1 (en) 2014-09-12 2016-03-17 R. J. Reynolds Tobacco Company Tobacco-derived filter element
US9950858B2 (en) 2015-01-16 2018-04-24 R.J. Reynolds Tobacco Company Tobacco-derived cellulose material and products formed thereof
US11154087B2 (en) 2016-02-02 2021-10-26 R.J. Reynolds Tobacco Company Method for preparing flavorful compounds isolated from black liquor and products incorporating the flavorful compounds
US10350608B2 (en) 2016-05-03 2019-07-16 Vermeer Manufacturing Company In-feed systems for chippers or grinders, and chippers and grinders having same
US11071986B2 (en) 2017-08-15 2021-07-27 Vermeer Manufacturing Company Infeed systems for chippers or grinders, and chippers and grinders having same
WO2020069595A1 (en) 2018-10-03 2020-04-09 Woodland Mills Inc. Flywheel and paddle assembly for a chipping or shredding apparatus, and an apparatus incorporating same
US11173496B2 (en) 2018-10-03 2021-11-16 Woodland Mills Inc. Flywheel and paddle assembly for a chipping or shredding apparatus, and an apparatus incorporating same
US11998925B2 (en) 2018-10-03 2024-06-04 Woodland Mills Inc. Flywheel and paddle assembly for a chipping or shredding apparatus, and an apparatus incorporating same
US12285763B2 (en) 2018-10-03 2025-04-29 Woodland Mills Inc. Flywheel and paddle assembly for a chipping or shredding apparatus, and an apparatus incorporating same
WO2020128971A1 (en) 2018-12-20 2020-06-25 R. J. Reynolds Tobacco Company Method for whitening tobacco

Also Published As

Publication number Publication date
JPS5036701A (ja) 1975-04-07
FR2235771A1 (ja) 1975-01-31
CA1011624A (en) 1977-06-07
IT1015536B (it) 1977-05-20
AU466856B2 (en) 1975-11-13
FR2235771B1 (ja) 1977-10-07
AU7040274A (en) 1975-11-13
FI207074A7 (ja) 1975-01-07
DE2462332A1 (de) 1977-01-20
DE2431690A1 (de) 1975-01-16
IN142515B (ja) 1977-07-23
SE7408829L (ja) 1975-01-07
GB1441060A (en) 1976-06-30
DE2431690B2 (de) 1977-06-08
NO742456L (ja) 1975-02-03
BR7405572D0 (pt) 1975-05-13

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