US3276700A - Wood chipper - Google Patents

Wood chipper Download PDF

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US3276700A
US3276700A US318865A US31886563A US3276700A US 3276700 A US3276700 A US 3276700A US 318865 A US318865 A US 318865A US 31886563 A US31886563 A US 31886563A US 3276700 A US3276700 A US 3276700A
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disc
housing
chips
wood
involute
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US318865A
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Henrik J Eklund
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Beloit Corp
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Beloit Corp
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Priority to CA754372A priority Critical patent/CA754372A/en
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Priority to US318865A priority patent/US3276700A/en
Priority to GB27625/66A priority patent/GB1078446A/en
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Publication of US3276700A publication Critical patent/US3276700A/en
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    • 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

  • object of my invention is to provide a wood chipper in which the chips are conveyed therethrough and discharged by a combination of forces consisting of the kinetic energy possessed by the moving chips, the blowing action of a moving stream of air adjacent the chips, and the blowing action of an involute blower.
  • Another object of my invention is to provide a wood chipper of the character designated in which the wood chips are discharged as fast as they are brought into the apparatus, thereby eliminating carry-over of the chips.
  • a further object of my invention is to provide a wood chipper of the character designated in which an effective blower is provided without the chips entering the space between the blowing means and the housing therefor.
  • a still further object of my invention is to provide a wood chipper which shall be simple of construction, economical of manufacture and one which is compact and requires a minimum of space for shipment, storage and installation.
  • the chip conveying means for such chippers depend almost entirely upon the kinetic energy possessed by the moving chips. While some air is conveyed through conventional type wood chippers by radially extending blades therein, which contact the chips, the air is insufficient for effective removal of the chips for the reason that a relatively close clearance is required between the radially extending chip conveying blades and the housing therefor. That is, the chip conveying housing is not involute in shape since there would be a substantial distance between the chip conveying blades and the housing adjacent the discharge end thereof whereby the chips would enter the space between the blades and the housing.
  • I provide a wood chipper embodying a rotary disc having angularly spaced knives and passageways therethrough, together with means to feed wood to one side of the disc whereby the wood is cut into chips which pass through the passageways to the other side of the disc.
  • An involute blower housing surrounds the side of the rotary disc adjacent the wood feeding means and a circular chip receiving housing surrounds the other side of the disc.
  • the circular chip receiving housing is separated from the involute housing by the disc whereby separate housings are provided at opposite sides of the disc.
  • Angularly spaced blades are carried by opposite sides of the rotary disc whereby chips are continuously conveyed through the circular chip receiving housing and air is circulated continuously through the involute housing.
  • the circular housing is provided with a tangential outlet and the involute housing is provided with a circumferential outlet, both of which communicate with a discharge conduit whereby the air discharged through the circumferential outlet aids in conveying the chips through the discharge conduit.
  • FIG. 1 is a side elevational view, partly broken away and in section;
  • FIG. 2 is a vertical sectional view taken generally along line 22 of FIG. 1;
  • FIG. 3 is a view taken generally along the line 33 of FIG. 2;
  • FIG. 4 is an end elevational view taken generally along the line 44 of FIG. 3.
  • a power unit 10 such as an electric motor, having a drive shaft 11. Opposite ends of the drive shaft 11 are supported in suitable bearing members 12 and 13 which in turn are supported by a supporting frame indicated generally at 14.
  • the power unit 10 is also connected to transverse frame members 16 which is turn are connected to the supporting frame 14.
  • a rotary disc 17 Mounted on the shaft 11 and adapted for rotation therewith is a rotary disc 17 having a peripheral flange 18, as shown in FIGS. 1 and 2.
  • a plurality of angularly spaced knives 19 are mounted at one side of the rotary disc 17 and angularly spaced through passageways 21 are provided adjacent the knives whereby wood cut into chips by the knives passes through the passageways to the opposite side of the disc.
  • an involute housing 22 Surrounding the side of the rotary disc 17 carrying the knives 19 is an involute housing 22 having a circumferential outlet 23.
  • a feed chute 24 communicates with the involute housing 22 in position to feed wood indicated at W to the adajacent side of the rotary disc 17 whereby the wood contacts the knives 19 and is cut into chips which pass through the openings 21 to the opposite side of the rotary disc.
  • a circular, chipreceiving housing 26 Surrounding the other side or discharge side of the rotary disc 17 is a circular, chipreceiving housing 26 having a tangential outlet 27.
  • a plurality of angularly spaced blades 28 Secured to the rotary disc 17 in position to rotate within the circular housing 26 are a plurality of angularly spaced blades 28. As shown in FIG. 2, the blades 28 are adapted to rotate within the circular housing 26 with a relatively close fit whereby chips are conveyed therethrough and then outwardly through the tangential outlet 27. The blades 28 are secured in place by suitable means, such as bolts 29 having nuts 31.
  • a plurality of angularly spaced blades 32 Secured to the rotary disc 17 in position to rotate within the involute housing 22 are a plurality of angularly spaced blades 32.
  • the blades 32 are preferably secured in place by the same bolts 29 which secure the blades 28 in place. That is, the bolts 29 pass through the blades 28, the peripheral flange 18 and the blades 32. Also, the blades 32 are positioned outwardly of the feed chute 24 whereby the wood does not contact the blades 32.
  • the blades 32 move progressively away from the inner surface of the housing 22 as they approach the circumferential outlet 23.
  • the spacing between the blades 32 and the inner circumferential surface of the involute housing 22 increases from approximately /2 inch until it reaches approximately 7 inches adjacent the circumferential outlet 23. Accordingly, the involute housing 22 having the fan blades 32 therein provides a very efficient 'blower which discharges air through the circumferential outlet 23.
  • a discharge conduit 33 Communicating with the upper end of the circumferential outlet 23 and the upper end of the tangential outlet 27 is a discharge conduit 33, whereby the air discharged from the circumferential outlet 23 aids in conveying the chips which are discharged through the tangential outlet 27.
  • the outer wall of the circumferential outlet 23 is directed upwardly and inwardly toward the tangential outlet 27 whereby the air discharged therefrom strikes the chips at an angle to prevent channeling of the air.
  • the chips are conveyed through the housing 26 by the kinetic energy possessed by the moving chips and the air drawn inwardly through the inlet opening 36. Since the housing 26 is circular, the blades 28 remain relatively close to the inner circumferential surface of the housing 26, thereby preventing the chips from entering the small space between the housing and the blades 28. As the chips are discharged from the tangential outlet 27, they are engaged by the air which is discharged through the circumferential outlet 23 whereby this air aids in conveying the chips through the discharge conduit 33. It will be noted that the circumferential outlet 23 is separated from the tangential outlet 27 by a partition wall 37 whereby the air discharged through the circumferential outlet 23 does not engage the chips until they are introduced into the discharge outlet 33.
  • a wood chipper embodying a rotary disc having angularly spaced knives and angularly spaced passageways therethrough together with means to feed wood to one side of the disc whereby the wood is cut into chips which pass through the passageways to the other side of the disc,
  • a wood chipper as defined in claim 1 in which the disc is provided with an annular member around the periphery thereof in position to separate the outer por tion of the involute housing from the outer portion of the circular housing.
  • a wood chipper comprising:

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)

Description

Oct. 4, 1966 H. J. EKLUND 3,276,700
v WOOD CHIPPER Filed Oct. 25, 1965 2 Sheets-Sheet l INVENTOR.
, Hem/kl Eli/arid L M/ Mf'M A Hamg s Oct. 4, 1966 H. J. EKLUND 3,276,700
WOOD CHIPPER Filed Oct. 25, 1963 2 Sheets-Sheet 2 I INVENTOR. L Henri/1' J. /(/U/?d United States Patent 3,276,700 WOOD CHIPPER Henrik J. Eklund, Pittsfield, Mass., asslgnor to Beloit Corporation, a corporation of Wisconsin Filed Oct. 25, 1963, Ser. No. 318,865 Claims. (Cl. 24155) This invention relates to a wood chipper and more particularly to improved means for continuously removing chips fro-m the chipper as they are cut.
As object of my invention is to provide a wood chipper in which the chips are conveyed therethrough and discharged by a combination of forces consisting of the kinetic energy possessed by the moving chips, the blowing action of a moving stream of air adjacent the chips, and the blowing action of an involute blower.
Another object of my invention is to provide a wood chipper of the character designated in which the wood chips are discharged as fast as they are brought into the apparatus, thereby eliminating carry-over of the chips.
A further object of my invention is to provide a wood chipper of the character designated in which an effective blower is provided without the chips entering the space between the blowing means and the housing therefor.
A still further object of my invention is to provide a wood chipper which shall be simple of construction, economical of manufacture and one which is compact and requires a minimum of space for shipment, storage and installation.
Heretofore in the art to which my invention relates various types of wood chippers have been proposed. However, the chip conveying means for such chippers depend almost entirely upon the kinetic energy possessed by the moving chips. While some air is conveyed through conventional type wood chippers by radially extending blades therein, which contact the chips, the air is insufficient for effective removal of the chips for the reason that a relatively close clearance is required between the radially extending chip conveying blades and the housing therefor. That is, the chip conveying housing is not involute in shape since there would be a substantial distance between the chip conveying blades and the housing adjacent the discharge end thereof whereby the chips would enter the space between the blades and the housing.
To overcome the above and other difliculties, I provide a wood chipper embodying a rotary disc having angularly spaced knives and passageways therethrough, together with means to feed wood to one side of the disc whereby the wood is cut into chips which pass through the passageways to the other side of the disc. An involute blower housing surrounds the side of the rotary disc adjacent the wood feeding means and a circular chip receiving housing surrounds the other side of the disc. The circular chip receiving housing is separated from the involute housing by the disc whereby separate housings are provided at opposite sides of the disc. Angularly spaced blades are carried by opposite sides of the rotary disc whereby chips are continuously conveyed through the circular chip receiving housing and air is circulated continuously through the involute housing. The circular housing is provided with a tangential outlet and the involute housing is provided with a circumferential outlet, both of which communicate with a discharge conduit whereby the air discharged through the circumferential outlet aids in conveying the chips through the discharge conduit.
Apparatus embodying features of my invention is illustrated in the accompanying drawings, forming a part of this application, in which:
FIG. 1 is a side elevational view, partly broken away and in section;
3,276,700 Patented Oct. 4, 19(zi6 FIG. 2 is a vertical sectional view taken generally along line 22 of FIG. 1;
FIG. 3 is a view taken generally along the line 33 of FIG. 2; and,
FIG. 4 is an end elevational view taken generally along the line 44 of FIG. 3.
Referring now to the drawings for a better understanding of my invention, I show a power unit 10, such as an electric motor, having a drive shaft 11. Opposite ends of the drive shaft 11 are supported in suitable bearing members 12 and 13 which in turn are supported by a supporting frame indicated generally at 14. The power unit 10 is also connected to transverse frame members 16 which is turn are connected to the supporting frame 14.
Mounted on the shaft 11 and adapted for rotation therewith is a rotary disc 17 having a peripheral flange 18, as shown in FIGS. 1 and 2. A plurality of angularly spaced knives 19 are mounted at one side of the rotary disc 17 and angularly spaced through passageways 21 are provided adjacent the knives whereby wood cut into chips by the knives passes through the passageways to the opposite side of the disc.
Surrounding the side of the rotary disc 17 carrying the knives 19 is an involute housing 22 having a circumferential outlet 23. A feed chute 24 communicates with the involute housing 22 in position to feed wood indicated at W to the adajacent side of the rotary disc 17 whereby the wood contacts the knives 19 and is cut into chips which pass through the openings 21 to the opposite side of the rotary disc. Surrounding the other side or discharge side of the rotary disc 17 is a circular, chipreceiving housing 26 having a tangential outlet 27.
Secured to the rotary disc 17 in position to rotate within the circular housing 26 are a plurality of angularly spaced blades 28. As shown in FIG. 2, the blades 28 are adapted to rotate within the circular housing 26 with a relatively close fit whereby chips are conveyed therethrough and then outwardly through the tangential outlet 27. The blades 28 are secured in place by suitable means, such as bolts 29 having nuts 31.
Secured to the rotary disc 17 in position to rotate within the involute housing 22 are a plurality of angularly spaced blades 32. The blades 32 are preferably secured in place by the same bolts 29 which secure the blades 28 in place. That is, the bolts 29 pass through the blades 28, the peripheral flange 18 and the blades 32. Also, the blades 32 are positioned outwardly of the feed chute 24 whereby the wood does not contact the blades 32. By providing an involute housing 22, the blades 32 move progressively away from the inner surface of the housing 22 as they approach the circumferential outlet 23. That is, the spacing between the blades 32 and the inner circumferential surface of the involute housing 22 increases from approximately /2 inch until it reaches approximately 7 inches adjacent the circumferential outlet 23. Accordingly, the involute housing 22 having the fan blades 32 therein provides a very efficient 'blower which discharges air through the circumferential outlet 23.
Communicating with the upper end of the circumferential outlet 23 and the upper end of the tangential outlet 27 is a discharge conduit 33, whereby the air discharged from the circumferential outlet 23 aids in conveying the chips which are discharged through the tangential outlet 27. As shown in FIG. 2, the outer wall of the circumferential outlet 23 is directed upwardly and inwardly toward the tangential outlet 27 whereby the air discharged therefrom strikes the chips at an angle to prevent channeling of the air.
From the foregoing description, the operation of my improved wood chipper will be readily understood. The wood W is fed into the chute 24 whereupon it is cut into chips by the knives 19. The chips pass through the openings 21 into the chip receiving housing 2. Since the blades 32 are mounted outwardly of the feed means 24, they do not contact the wood, but provide blower blades which circulate air through the involute housing 22. Air is drawn inwardly of the involute housing 22 by a centrally disposed inlet opening 34 which surrounds the drive shaft 11, as shown in FIG. 2. In like manner some air is drawn inwardly of the chip receiving housing 26 by a centrally disposed inlet opening 36 which also surrounds the shaft 11.
The chips are conveyed through the housing 26 by the kinetic energy possessed by the moving chips and the air drawn inwardly through the inlet opening 36. Since the housing 26 is circular, the blades 28 remain relatively close to the inner circumferential surface of the housing 26, thereby preventing the chips from entering the small space between the housing and the blades 28. As the chips are discharged from the tangential outlet 27, they are engaged by the air which is discharged through the circumferential outlet 23 whereby this air aids in conveying the chips through the discharge conduit 33. It will be noted that the circumferential outlet 23 is separated from the tangential outlet 27 by a partition wall 37 whereby the air discharged through the circumferential outlet 23 does not engage the chips until they are introduced into the discharge outlet 33.
From the foregoing, it will be seen that I have devised an improved wood chipper which is compact in construction and one which utilizes a self-contained blower in conjunction with the kinetic energy possessed by the moving chips to remove the chips continuously from the apparatus in an effective manner. By providing an involute blower housing at the opposite side of the rotary disc from the circular chip receiving housing, I not only provide an effective blower which aids in conveying the chips, but provide a chip receiving housing which is positioned relatively close to the chip conveying blades therein, thereby eliminating passage of the chips between the conveying blades and the housing. Furthermore, by providing an involute blower housing and a circular chip receiving housing at opposite sides of the rotary disc member which in turn is mounted on a common shaft with the drive means for the chipper, I not only reduce the overall size of the chipper but provide one which is dynamically balanced and one which requires a minimum of operating parts.
While I have shown my invention in but one form, it will be obvious to those skilled in the art that it is not so limited, but is susceptible of various changes and modifications without departing from the spirit thereof, and I desire, therefore, that only such limitations shall be placed thereupon as are specifically set forth in the appended claims.
What I claim is:
1. In a wood chipper embodying a rotary disc having angularly spaced knives and angularly spaced passageways therethrough together with means to feed wood to one side of the disc whereby the wood is cut into chips which pass through the passageways to the other side of the disc,
(a) an involute housing surrounding said one side of said disc,
(b) a circular housing surrounding said other side of the disc and separated from said involute housing by said disc,
(c) angularly spaced blades carried by said other side of the disc and disposed to rotate within said circular housing with a relatively close fit to convey chips therethrough,
(d) angularly spaced blades carried by said one side of the disc outwardly of said means to feed wood and disposed to rotate Within said involute housing to circulate air therethrough,
(e) a tangential outlet for said circular housing for discharging chips therefrom,
(f) a circumferential outlet for said involute housing adjacent and alongside said tangential outlet for discharging air therefrom, and
(g) a discharge conduit communicating with said tangential outlet and said circumferential outlet to receive chips discharged through said tangential outlet and air discharged through said circumferential outlet whereby the air discharged through said circumferential outlet aids in conveying the chips through said discharge conduit.
2. A wood chipper as defined in claim 1 in which the disc is provided with an annular member around the periphery thereof in position to separate the outer por tion of the involute housing from the outer portion of the circular housing.
3. A wood chipper as defined in claim 2 in which the radially extending blades are secured to said annular member.
4. A wood chipper as defined in claim 1 in which the circumferential outlet is defined by a conduit having its discharge end directed inwardly toward the tangential outlet whereby air discharged from said circumferential outlet contacts the chips discharged through said tangential outlet at an angle.
5. A wood chipper comprising:
(a) a drive shaft,
(b) bearing members supporting opposite ends of said shaft for rotation,
(c) a motor mounted on said shaft intermediate said bearing members for rotating the same,
(d) a disc mounted on said shaft intermediate said motor and one of said bearing members for rotation therewith and having angularly spaced passageways therethrough,
(e) angularly spaced knives carried by one side of said disc adjacent said passageways,
(f) means to feed wood to said one side of the disc whereby the wood is cut into chips which pass through the passageways to the other side of the disc,
(g) an involute housing surrounding said one side of said disc,
(h) a circular housing surrounding said other side of the disc and separated from said involute housing by said disc,
(i) angularly spaced blades carried by said other side of the disc and disposed to rotate within said circular housing with a relatively close fit to convey chips therethrough,
(j) angularly spaced blades carried by said one side of the disc outwardly of said means to feed wood and disposed to rotate within said involute housing to circulate air therethrough,
(k) a tangential outlet for said circular housing for discharging chips therefrom,
(l) a circumferential outlet for said involute housing adjacent and alongside said tangential outlet for discharging air therefrom, and
(m) a discharge conduit communicating with said tangential outlet and said circumferential outlet to receive chips discharged through said tangential outlet and air discharged through said circumferential outlet whereby the air discharged through said circumferential outlet aids in conveying the chips through said discharge conduit.
References Cited by the Examiner UNITED STATES PATENTS ROBERT C. RIORDON, Primary Examiner.
DONALD KELLY, Examiner.

Claims (1)

1. IN A WOOD CHIPPER EMBODYING A ROTARY DISC HAVING ANGULARLY SPACED KNIVES AND ANGULARLY SPACED PASSAGEWAYS THERETHROUGH TOGETHER WITH MEANS TO FEED WOOD TO ONE SIDE OF THE DISC WHEREBY THE WOOD IS CUT INTO CHIPS WHICH PASS THROUGH THE PASSAGEWAYS TO THE OTHER SIDE OF THE DISC, (A) AN INVOLUTE HOUSING SURROUNDING SAID ONE SIDE OF SAID DISC, (B) A CIRCULAR HOUSING SURROUNDING SAID OTHER SIDE OF THE DISC AND SEPARATED FROM SAID INVOLUTE HOUSING BY SAID DISC, (C) ANGULARLY SPACED BLADES CARRIED BY SAID OTHER SIDE OF THE DISC AND DISPOSED TO ROTATE WITHIN SAID CIRCULAR HOUSING WITH A RELATIVELY CLOSE FIT TO CONVEY CHIPS THERETHROUGH, (D) ANGULARLY SPACED BLADES CARRIED BY SAID ONE SIDE OF THE DISC OUTWARDLY OF SAID MEANS TO FEED WOOD AND DISPOSED TO ROTATE WITHIN SAID INVOLUTE HOUSING TO CIRCULATE AIR THERETROUGH,
US318865A 1963-10-25 1963-10-25 Wood chipper Expired - Lifetime US3276700A (en)

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CA754372A CA754372A (en) 1963-10-25 Wood chipper
US318865A US3276700A (en) 1963-10-25 1963-10-25 Wood chipper
GB27625/66A GB1078446A (en) 1963-10-25 1966-06-21 Wood chipper

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US318865A US3276700A (en) 1963-10-25 1963-10-25 Wood chipper
GB27625/66A GB1078446A (en) 1963-10-25 1966-06-21 Wood chipper
DEB0087773 1966-06-29

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Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3346027A (en) * 1963-07-22 1967-10-10 Kirsten Paul Arthur Knife disc wood cutting machine
US3410495A (en) * 1966-07-22 1968-11-12 Beloit Corp Wood chipper
US5020579A (en) * 1990-05-21 1991-06-04 Strong Manufacturing Automatic infeed control
US5060873A (en) * 1990-05-21 1991-10-29 Strong Manufacturing Wood chipper fin chip separator
US5085376A (en) * 1991-05-06 1992-02-04 Tolle Mfg. Co., Inc. Commercial-grade grinding and mulching machine
US5293917A (en) * 1991-11-11 1994-03-15 Sunds Defibrator Woodhandling Oy Disc chipper feeding method and disc chipper
US5358189A (en) * 1993-09-29 1994-10-25 Aldo Vandermolen Processor for chipping and shredding vegetation
US5390865A (en) * 1993-01-05 1995-02-21 Vandermolen; Aldo Processor for chipping and shredding vegetatation
US5988539A (en) * 1996-10-24 1999-11-23 Tramor, Inc. Wood chipper with infeed chute safety device
US6016855A (en) * 1999-03-04 2000-01-25 Tramor, Inc. Hood assembly for a wood chipper
US6179232B1 (en) 1999-08-26 2001-01-30 Morbark, Inc. Apparatus and method for chipping wood debris
US6357684B1 (en) 2000-10-31 2002-03-19 Tramor, Inc. Adjustable tension feed wheel assembly for a wood chipper
US6722596B1 (en) 2001-01-31 2004-04-20 Tramor, Inc. Multiple wheel feed wheel assembly for a wood chipper
US6729567B1 (en) 2001-07-31 2004-05-04 Tramor, Inc. Side feed wheel assembly for wood chipper
US20040104798A1 (en) * 2002-11-26 2004-06-03 Ambient Corporation Arrangement of an inductive coupler for power line communications
US6814320B1 (en) 2001-12-10 2004-11-09 Tramor, Inc. Reversing automatic feed wheel assembly for wood chipper
US6955310B1 (en) 2002-05-21 2005-10-18 Tramor, Inc. Remote control assembly for wood chipper
US7121488B1 (en) 2001-09-18 2006-10-17 Tramor, Inc. Spring assist assembly for infeed pan of wood chipper
US8109303B1 (en) 2006-04-27 2012-02-07 Tramor, Inc. Stump grinder having an automatic depth control system
US9073058B2 (en) 2013-03-04 2015-07-07 Morbark, Inc. Wood chipping apparatus and method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2756788A (en) * 1954-01-25 1956-07-31 Sumner Iron Works Feeding mechanism for rechippers
US3123311A (en) * 1964-03-03 Wood chipper

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3123311A (en) * 1964-03-03 Wood chipper
US2756788A (en) * 1954-01-25 1956-07-31 Sumner Iron Works Feeding mechanism for rechippers

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3346027A (en) * 1963-07-22 1967-10-10 Kirsten Paul Arthur Knife disc wood cutting machine
US3410495A (en) * 1966-07-22 1968-11-12 Beloit Corp Wood chipper
US5020579A (en) * 1990-05-21 1991-06-04 Strong Manufacturing Automatic infeed control
US5060873A (en) * 1990-05-21 1991-10-29 Strong Manufacturing Wood chipper fin chip separator
US5085376A (en) * 1991-05-06 1992-02-04 Tolle Mfg. Co., Inc. Commercial-grade grinding and mulching machine
US5293917A (en) * 1991-11-11 1994-03-15 Sunds Defibrator Woodhandling Oy Disc chipper feeding method and disc chipper
AT402709B (en) * 1991-11-11 1997-08-25 Sunds Defibrator Woodhandling DISC CLAMP AND METHOD FOR LOADING THE SAME
US5390865A (en) * 1993-01-05 1995-02-21 Vandermolen; Aldo Processor for chipping and shredding vegetatation
US5358189A (en) * 1993-09-29 1994-10-25 Aldo Vandermolen Processor for chipping and shredding vegetation
US5988539A (en) * 1996-10-24 1999-11-23 Tramor, Inc. Wood chipper with infeed chute safety device
US6016855A (en) * 1999-03-04 2000-01-25 Tramor, Inc. Hood assembly for a wood chipper
US6179232B1 (en) 1999-08-26 2001-01-30 Morbark, Inc. Apparatus and method for chipping wood debris
US6357684B1 (en) 2000-10-31 2002-03-19 Tramor, Inc. Adjustable tension feed wheel assembly for a wood chipper
US6722596B1 (en) 2001-01-31 2004-04-20 Tramor, Inc. Multiple wheel feed wheel assembly for a wood chipper
US6729567B1 (en) 2001-07-31 2004-05-04 Tramor, Inc. Side feed wheel assembly for wood chipper
US7121488B1 (en) 2001-09-18 2006-10-17 Tramor, Inc. Spring assist assembly for infeed pan of wood chipper
US6814320B1 (en) 2001-12-10 2004-11-09 Tramor, Inc. Reversing automatic feed wheel assembly for wood chipper
US6830204B1 (en) 2001-12-10 2004-12-14 Tramor, Inc. Reversing automatic feed wheel assembly for wood chipper
US6955310B1 (en) 2002-05-21 2005-10-18 Tramor, Inc. Remote control assembly for wood chipper
US20040104798A1 (en) * 2002-11-26 2004-06-03 Ambient Corporation Arrangement of an inductive coupler for power line communications
US8109303B1 (en) 2006-04-27 2012-02-07 Tramor, Inc. Stump grinder having an automatic depth control system
US9073058B2 (en) 2013-03-04 2015-07-07 Morbark, Inc. Wood chipping apparatus and method

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GB1078446A (en) 1967-08-09
CA754372A (en) 1967-03-14

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