US3807469A - Barking apparatus and process therefor - Google Patents

Barking apparatus and process therefor Download PDF

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Publication number
US3807469A
US3807469A US00274190A US27419072A US3807469A US 3807469 A US3807469 A US 3807469A US 00274190 A US00274190 A US 00274190A US 27419072 A US27419072 A US 27419072A US 3807469 A US3807469 A US 3807469A
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United States
Prior art keywords
logs
drum
housing
shell
barking
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Expired - Lifetime
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US00274190A
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English (en)
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A Schnyder
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Individual
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Individual
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Priority to US00274190A priority Critical patent/US3807469A/en
Priority to DE2240261A priority patent/DE2240261A1/de
Priority to NO2584/73A priority patent/NO136139C/no
Priority to GB3076073A priority patent/GB1395298A/en
Priority to CA175,564A priority patent/CA993325A/en
Priority to DE2334441A priority patent/DE2334441C3/de
Priority to AT625373A priority patent/AT340127B/de
Priority to FI2270/73A priority patent/FI59212C/fi
Priority to BR5509/73A priority patent/BR7305509D0/pt
Priority to SE7310188A priority patent/SE413642B/xx
Priority to SU731946502A priority patent/SU680625A3/ru
Priority to JP48082814A priority patent/JPS5131732B2/ja
Priority to FR7327080A priority patent/FR2193683B1/fr
Priority to AU59549/73A priority patent/AU468030B2/en
Application granted granted Critical
Publication of US3807469A publication Critical patent/US3807469A/en
Priority to US517463A priority patent/US3923087A/en
Priority to US05/517,894 priority patent/US3948300A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B27L1/00—Debarking or removing vestiges of branches from trees or logs; Machines therefor
    • B27L1/02—Debarking or removing vestiges of branches from trees or logs; Machines therefor by rubbing the trunks against each other; Equipment for wet practice
    • B27L1/025—Debarking in rotating drums

Definitions

  • a novel barker assembly which in one disclosed embodiment comprises a shell including a stationary housing and rotatable drive rings which are supported on trunnion rollers and located in spaced-apart slots in the housing, the drive rings being rotatably driven in excess of about 7.5 RPMs by suitable drive means.
  • An inner portion of the housing forms a battering wall against which the logs are deflected by deflector means to assist in debarking as well as to absorb a major portion of the force of the logs to protect the drive rings.
  • Each drive ring is provided with inwardly projecting pusher elements to move the logs around the contour of the housing.
  • a grillage is provided in the bottom of the housing to permit removal and subsequent conveyance of bark therefrom in a more useable form.
  • High speed roller assemblies are provided for introducing the logs into the barker assembly and to withdraw debarked logs.
  • This invention relates to an apparatus for removing bark from logs, and more particularly relates to an apparatus particularly adapted for removing the bark from pulpwood.
  • the removal of bark from pulpwood is accomplished either by means of friction, by tumbling or rotating the pulpwood, or by means of mechanical friction or hydraulic action.
  • One of such apparatus extensively used in industry is the barking drum which is capable of quickly and cheaply removing the bark from pulpwood.
  • the conventional barking drum consists essentially of a plurality of large rotating sections and removes the bark from pulpwood by friction primarily through the tumbling action of the logs as they pass through the drum.
  • the ends of the pulpwood logs become broomed by the time the logs are discharged from the drum.
  • Brooming during barking accounts for from 2 to 3 percent loss of wood fibers and has a deleterious effect on the quality of the paper if any particles of sand or dirt are present in the barking drum, since such particles are pounded into the broomed ends and are subsequently carried through the delignification and paper making processing steps.
  • U.Sl Pat. No. 3,080,898 there is described a tunnel barker comprised of a keyhole-shaped tunnel structure designed to accomodate a rotating scroll cage for moving a stack of generally parallel logs transversely and upwardly along one side of the tunnel whereby the logs roll and cascade about each other for removal of the bark.
  • The'tunnel is of a generally cylindrical shape with the cage including a plurality of angularly spaced pusher elements extending generally longitudinally of the tunnel.
  • the triangularlyshaped pusher elements are rigidly and uniformly connected to a plurality of rings which rotatably support and drive the cage structure.
  • Mechanical drive for the cage may be achieved by at least one driven pinion intermeshed with a gear tooth structure affixed upon one or more of the rings of the cage.
  • Some of these rings may be so constructed as to define part of the perihery of the tunnel, whereas the axially adjacent parts of the inner periphery of the tunnel are defined by stationary concrete structures.
  • a grillage assembly shaped to the radius or curvature of the tunnel and formed of substantially parallel curved bars. The grillage assembly permits the withdrawal'from the tunnel of the bark removed from the logs passing therethrough. The removed bark drops through the grillage and is thereafter guided by a chute-like structure onto a bark transfer conveyor provided therebeneath.
  • tunnel barker The capacity of such a tunnel barker is limited by the rotational speed thereof with regard to the necessary support structure for the active mechanism, i.e., a scroll cage positioned on trunnion supports.
  • the active mechanism i.e., a scroll cage positioned on trunnion supports.
  • the rotational speeds of present day tunnel barkers vary between about 5 to 7.5 RPMs for a 12 foot diameter drum, thus determining the capacity thereof.
  • the logs approach the top of the barker and fall downwardly in an avalanche effect resulting in considerable breakage of thinner logs as well as enhancing brooming of log ends with concomitant fiber losses.
  • the logs tend to ring about the periphery of the barker thereby preventing barking.
  • Bark particles are formed of diverse sizes and include fiber strings which resulted in bark handling problems for use as by-product fuel.
  • An object of this invention is to provide a novel barker assembly which obviates the disadvantages hereinbefore mentioned.
  • Another object of the invention is to provide a novel barker assembly of substantial increased capacity as compared with present-day barkers of like diameter Still another object of the invention is to provide a novel barker assembly wherein the logs are introduced in a manner to assume parallel relationship prior to joining the log cluster thereby minimizing brooming of log ends.
  • a further object of the invention is to provide a novel barker assembly which requires less maintenance and repairs.
  • a still further object of the invention is to provide a novel barker assembly which may handle logs of diverse thickness and length.
  • Another object of the present invention is to provide a method of converting existing drum barkers into high SUMMARY OF THE INVENTION
  • a novel barking apparatus which, as in one disclosed embodiment, may comprise a shell including a stationary housing and rotatable drive rings which are rotatably driven in excess of about 7.5 RPMs by suitable drive means.
  • An inner portion of the housing forms a battering wall to absorb a major portion of the force of logs deflected by deflector means towards the battering wall.
  • Each drive ring is provided with inwardly projecting pusher elements to move the logs around the contour of the housing.
  • a grillage is provided in the bottom of the housing to permit removal and subsequent conveyance of bark therefrom in a more useable form.
  • FIG. 1 is a partial sectional top view of the barker of one embodiment of the present invention.
  • FIG. 2 is an enlarged sectional side view of the barker of FIG. 11 taken along the lines 2-2 of FIG. 1;
  • FIG. 3 is an enlarged sectional side view of the barker of FIG. 1 taken along the lines 33 of FIG. 1;
  • FIG. 4 is a partial sectional view of the grillage taken along the lines 4-4 of FIG. 2;
  • FIG. 5 is a somewhat enlarged, partial sectional view taken along the lines 55 of FIG. 1;
  • FIG. 6 is a simplified end view of the inlet end of the barker
  • FIG. 7 is a simplified end view of the discharge end of the barker
  • FIG. 8 is an enlarged view of a support trunnion assembly roller for a drive ring of the barker
  • FIG. 9 is an enlarged view of a pinion drive assembly for a drive ring of the barker
  • FIG. 10 is a partial plane view of a standard drum barker modified to employ the concept of the present invention.
  • FIG. 11 is a sectional view of the embodiment of FIG. 10 taken along the lines 1111 thereof;
  • FIG. 12 is a sectional view of the embodiment of FIG. 10 taken along the lines 12-12 thereof.
  • a barker assembly generally indicated as 10, particularly intended to remove bark from pulpwood logs and comprised of a plurality of concrete stationary housing members 12 and 14 suitably positioned on a base 16.
  • the members 12 and 14 are formed with a plurality of slots 18 and 20, respectively, disposed in parallel alignment and in which are disposed supporting trunnion assemblies, generally indicated as 22, which support respective drive rings, generally indicated as 24.
  • the housing member 12 extends upwardly to the mid point of the barker assembly 10 and is formed with sloping ribs 26 at about 10 lead serving to assist in the positive forwarding oflogs within the log cluster from inlet to outlet, as more fully hereinafter described.
  • the housing member 14 extends upwardly above the mid point and is formed with an inwardly extending side wall 28 (between adjacent slots) forming a braking means or battering wall to assist in debarking the logs being flung against such battering wall 28.
  • the barker assembly 10 is closed by a generally inverted, J-shaped top wall, generally indicated as 30, comprised of a curved leg portion 32 mounted on the top 34 of the structure 12 and a horizontal leg portion 36 mounted to and supported by the top 38 of the structure 14 the horizontal leg portion 36 functioning as a deflector, as more fully hereinafter discussed.
  • Each drive ring 24 is formed of a cylindrically-shaped band member 40 on which are mounted a pair of outwardly extending members 42 in which are affixed a plurality of bars 44 which form a rack assembly, as illustrated with particular reference to FIGS. 8 and 9.
  • the trunnion supporting assembly 22 is comprised of a guide roller 46 mounted on a shaft 48 journalled for rotation in suitable bearing members 50 positioned on support members 51 within the slots of housings 12 and 14.
  • the drive rings 24 are provided with a plurality of triangularly-shaped pusher elements, generally indicated as 52, suitably affixed such as by welding to the inner surface of the band member 40.
  • a drive assembly generally indicated as 54 referring again particularly to FIGS. 1 and 2, includes a centrally-disposed electric motor means 56 supported on the housing 14 and having a shaft 58 provided with a gear 60.
  • An endless belt such as a chain drive 62, is coursed for rotation about the gear 60 and a gear 64 affixed to a horizontally disposed drive shaft 66 journalled for rotation in a plurality of spaced-apart bearing assemblies, generally indicated as 68.
  • a plurality of bevelled pinions 70 are affixed to the shaft 64 at spaced-apart locations thereon corresponding to the positions of the drive rings 24, and are provided with outwardly extending teeth 72 which engage bars 44 of the drive ring 24 to form a rack and pinion assembly for effecting rotation of the drive rings 24 of the barker assembly 10.
  • the feed end of the barker assembly 10 is formed with an end wall 74 having an opening 76 in an upper right quadrant (when viewed from inside the barker assembly 10).
  • a high speed roller assembly generally indicated as 78, suitably mounted on a support structure (not shown) is provided to introduce the logs lengthwise into the barker assembly 10 at a high speed rate to assist in the continued maintenance of a paralleled log configuration or cluster.
  • FIG. 7 illustrates somewhat schematically, the withdrawal end of the barker assembly 10 as being essentially open and provided with high speed roller assemblies, generally indicated as 80 and 81, to withdraw rapidly debarked logs reaching the discharge end.
  • a grill-like structure or grillage is formed in the lower portion of the barker assembly 10 and is comprised of arcuate bars 92, conforming generally to the cylindrical configuration of the circular portion of the housing members 12 and 14. Intermediate portions of the bars 92 may be supported in fixed relationship to each other by reinforcing pipe members 94 or the like extending longitudinally between adjacent drive rings 24 of the barker assembly 10 and passing through and/or being secured to the bars 92, such as by welding.
  • the grillage extends over substantially the entire length of the barker assembly 10 (except for the slots 18 and 20). Movement of the logs along the surface of the grillage 90 is effected by means of the pusher elements 52 provided on the drive rings 24.
  • a conveyor assembly (not shown), such as illustrated in the aforementioned Let-' ters Patent, is provided to withdraw from the barker bark removed from the logs.
  • FIGS. 10 to 12 wherein like numerals designate like parts, there is illustrated another embodiment of the invention in the form of an existing drum barker converted into a high-speed, highcapacity unit.
  • the barker assembly is comprised of a plurality of stationary, generally inverted .I-shaped members 114 disposed between adjacent drum sections, generally indicated as 113, and at the ends of the barker assembly 1 l0 suitably positioned on a base 116.
  • the drum sections 113 as will be seen, form a shell internally receiving the logs to be debarked by the barker assembly 110. Space for such members 114 is obtained by moving longitudinally respective drum sections 113 with regard to the existing drum barker assembly.
  • Each drum section 113 is comprised ofa drum 115 to which is mounted tires 124 supported on trunnions 122.
  • a drive assembly generally indicated as 154, includes a motor means 156 suitably mounted on the base 116 and including a horizontally disposed shaft 166 journalled for rotation in suitable support assemblies (not shown).
  • a plurality of drive gears 117 are afiixed to the shaft 116 at spaced apart locations; and, as illustrated in FIG.
  • a plurality of such drive gears 117 are in driving relationship with drum carried full gears while another thereof is in geared contact with a drive jack assembly, generally indicated as 119, comprised of a gear 121 affixed to shaft 123 on which are mounted trunnion rollers 125 which engage the drive tires 124 of a drum section 113.
  • a plurality of longitudinally extending l-beam members 127 are disposed within the barker assembly 110 supported on a lower inwardly extending portion 129 of the housing member 114.
  • a solid plate member 131 is positioned within the barker assembly 110 and affixed, such as by welding, to the members 127 to form the braking means or battering wall, such as discussed with reference to the embodiment of P165. 1 to 9.
  • Triangularly-shaped deflector-assemblies are formed on the upper portion of the member 114 and, during the rotation of the drum section 113 by the before-described drive assembly 154, deflect logs from being carried circumferentially around the drum sections 113 and towards the before-described battering wall of the barker assembly 110.
  • the deflector assembly 133 generally extends through the first section 113 of the barker assembly 110 with the smaller deflector assembly 135 extending through the remaining portion of the barker assembly 110.
  • a plurality of l-beam members 137 and sheet members 139 suitably affixed to one another, such as by welding, form the deflector assemblies 133 and 135.
  • the logs to be barked are introduced into the barker assembly 110 above the deflector assembly 133 in a manner to permit parallel alignment within the barker assembly 1111 prior to joining the log cluster.
  • the existing bark collecting assembly (not shown) is used to collect and remove bark from the barker as is known and used by those skilled in the art.
  • the pulpwood logs are continuously introduced into the barker assembly 1110 by the high speed rolls 78 which impart to the logs a ballistic-like trajectory.
  • the logs are forced to align axially in the barker assembly by the pusher elements 52 of the drive rings 24 which sweep the barker assembly 10 the full length thereof together with the effect produced by the logs hitting the battering wall 28.
  • the action of pusher elements 52 causes the logs to rotate within a semi-circular formation as well as to carry the logs up along the elements 52 whereupon the logs are deflected from being carried circumferentially around the shell and flung against the battering ,wall 28 by the horizontal leg portion or deflector 36, the rotational speed of the drive rings 24 being such to carry the logs about the barker assembly 10;, except for the inclusion of the deflector 36 (and battering wall 28). Barking is effected by the frictional forces created by the rotation of the logs within the log cluster with bark being efficaciously loosened by the impact of the logs against the battering wall 28. Since barking is primarily effected by the rotational action of the pulpwood logs within the parallel cluster, brooming of the log ends is substantially eliminated.
  • the grillage assembly 90 mounted on the bottom of the tunnel permits the loosened bark to drop therethrough to a bark conveyor (not shown) located below the barker, one is essentially simultaneously discharged.
  • the rate at which the logs are introduced into the barker assembly 10 is a function of the type of wood being introduced into the barker.
  • the discharge end of the barker is essentially'open with high speed roller assembly permitting efficient removal of the debarked pulpwood log which are thereafter subse- .quently processed (not shown) for feed stock to a deresult in a design spacing of drive rings of 6.0 feet 6 the grillage assembly.
  • the movement of the logs through the barker assembly 10 is pseudo-hydraulic, i.e., after initial loading, for every log introduced into thereby setting a full width between portions of intermediate housing structures at 5 feet 4 inches with 8 inches wide slots.
  • the drive rings 24 are driven at a rotational speed which is sufficiently great that, in the absence of the deflector assembly 36 and battering wall, the logs would ring the barker, generally about 7.5 RPMs for a 12 feet diameter tunnel barker. it will be understood that such speed is a function, inter alia, of the diameter of the drive rings 24 as well as the length of the logs to be treated. Accordingly, a 12 feet diameter barker of the present invention is operated at a rotational speed of 25 RPMs to debark 250 cords per hour of Southern pine as compared with 50 cords per hour of a standard three section 12 feet diameter drum barker of like length.
  • the battering wall shields the drive rings (and particularly the trunnion'support members 22 in housing 14) from impact of the logs to thereby reduce materially maintenance requirements. Additionally, the drive assembly insures for proper axial alignment of the pusher elements of the rings.
  • the grillage assembly permits continuous withdrawal and restricts bark particles to passable sizes while slicing fiber strings into passable lengths. Since avalanching of the logs, as existing in tunnel barkers, is inhibited, the drive power requirements are evened out to the benefit of the drive assembly.
  • the logs are maintained in loosely parallel positions; as hereinabove mentioned, as a result of the battering wall which rearranges the flying logs into parallel position at the toe of the cluster surfaces whereas the pusher elements engage the logs in the cluster in submerged position. Accordingly, with the present invention, a high-speed barker assembly and process are obtained which result in substantially greater capacities as compared with conventional tunnel barkers with a concomitant in fiber losses per unit of feed.
  • An apparatus for removing bark from pulpwood logs which comprises:
  • a housing including spaced-apart slots and defining a cylindrically-shaped chamber about a generally horizontal axis, a lower portion of said housing being provided with inwardly extending wall means between said slots;
  • the apparatus as defined in claim 1 wherein the means for removing bark comprises a grill-like structure which is engageable with at least some of the logs in said housing during rotation of said rings.
  • said drive means includes a motor, and a shaft driven by said motor and provided with a plurality of pinions, each of which, pinions is associated with a respective ring provided with rack means for engaging the pinion.
  • a process for removing bark from pulpwood logs which comprises:
  • a process for converting a barker including a plurality of subsections, into a high-capacity barker assembly which comprises:
  • deflector means is formed in the upper portion of said barker assembly to extend longitudinally through said barker to direct logs towards said inwardly extending wall means.
  • a support housing disposed at the ends of each subsection and defining a cylindrically-shaped chamber, said chamber having an inwardly extending side wall bisecting a portion ofthe circle formed by a subsection;
  • Barking apparatus comprising a shell adapted to internally receive logs to be debarked and including at least a portion rotatable for causing logs in said shell to be raised by its rotation, and deflector means within said shell for deflecting logs therein from being carried circumferentially around said shell by the rotation of said rotatable portion of said shell.
  • Barking apparatus according to claim 19, wherein said rotatable portion of said shell is rotatable relative to said deflector means.
  • Barking apparatus according to claim 19, further comprising battering wall means within said shell, said deflector means and said battering wall means being relatively arranged such that said deflector means deflects the logs towards said battering wall means.
  • Barking apparatus according to claim 21, wherein said deflector means is above said battering wall means.
  • Barking apparatus according to claim 19, wherein said shell includes a plurality of spaced-apart stationary sections, and said rotatable portion of said shell includes a rotatable drive ring between said spaced-apart sections.
  • Barking apparatus according to claim 23, further comprising battering wall means within said shell, said 9 deflector means and said battering wall means being relatively arranged such that said deflector means deflects the logs towards said battering wall means.
  • Barking apparatus according to claim 19, wherein said shell includes at least one rotatable drum.
  • said deflector means includes a deflector within each said drum.
  • Barking apparatus wherein each said deflector generally extends through its respective said drum, and said drums are rotatable relative to said deflectors.
  • Barking apparatus according to claim 19, further comprising an inlet opening at one end of said shell for introducing logs into said shell, said inlet opening being adjacent the upper end of said shell.
  • Barking apparatus according to claim 19, further comprising. means forrotatably driving said rotatable portion at a rotary speed of at least about 7.5 revolutions per minute.
  • Barking apparatus comprising a rotatable drum adapted to internally receive logs to be debarked, and deflector means within said drum for deflecting logs therein from being carried circumferentially around said drum by the drum rotation.
  • Barking apparatus according to claim 32, wherein said drum is rotatable relative to said deflector means.
  • Barking apparatus according to claim 32, further comprising battering wall means within said drum, said deflector means and said battering wall means being relatively arranged such that said deflector means deflects the logs toward said battering wall means.
  • Barking apparatus according to claim 34, wherein said deflector means is above said battering wall means.
  • Barking apparatus according to claim 32, wherein said deflector means generally extends through said drum.
  • Barking apparatus according to claim 32, further comprising means for rotatably driving said drum at a rotary speed at least about 7.5 revolutions per minute.
  • Barking apparatus comprising a shell for internally receiving logs to be debarked and including at least a portion rotatable for causing logs in said shell to be raised by its rotation, barking means in said shell, and log deflector means in said shell preventing logs therein from being carried circumferentially around said shell by the rotation of said rotatable portion of said shell and deflecting logs therein towards said barking means, said rotatable portion of said shell being rotatable relative to said log deflector means.
  • Barking apparatus comprising a drum adapted to internally receive logs to be debarked and rotatable to cause logs therein to be raised by its rotation, barking means in said drum, and log deflector means in said drum for deflecting logs therein towards said barking means, said drum being rotatable relative to said log deflector means.
  • Barking apparatus comprising a drum adapted to internally receive logs to be debarked and rotatable to cause logs therein to be raised by its rotation, and battering wall means in said drum, said drum being rotatable relative to said battering wall means.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)
  • Fertilizers (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
US00274190A 1971-08-31 1972-07-24 Barking apparatus and process therefor Expired - Lifetime US3807469A (en)

Priority Applications (16)

Application Number Priority Date Filing Date Title
US00274190A US3807469A (en) 1972-07-24 1972-07-24 Barking apparatus and process therefor
DE2240261A DE2240261A1 (de) 1971-08-31 1972-08-16 Verfahren und vorrichtung zum entrinden von holzstuecken
NO2584/73A NO136139C (no) 1972-07-24 1973-06-21 Barkeapparat.
GB3076073A GB1395298A (en) 1972-07-24 1973-06-28 Barking apparatus
CA175,564A CA993325A (en) 1972-07-24 1973-07-04 Barking apparatus and process therefor
DE2334441A DE2334441C3 (de) 1972-07-24 1973-07-06 Trommelartige Vorrichtung zum Entrinden von Hölzern
AT625373A AT340127B (de) 1972-07-24 1973-07-16 Trommelentrindungsvorrichtung
FI2270/73A FI59212C (fi) 1972-07-24 1973-07-17 Anordning foer traedavbarkning
BR5509/73A BR7305509D0 (pt) 1972-07-24 1973-07-20 Aparelho descascador, processo para remover casca de loros e processo para converter um descascador
SE7310188A SE413642B (sv) 1972-07-24 1973-07-20 Barkningsapparat
SU731946502A SU680625A3 (ru) 1972-07-24 1973-07-23 Окорочный станок
JP48082814A JPS5131732B2 (enrdf_load_stackoverflow) 1972-07-24 1973-07-24
FR7327080A FR2193683B1 (enrdf_load_stackoverflow) 1972-07-24 1973-07-24
AU59549/73A AU468030B2 (en) 1972-07-24 1973-08-23 Barking apparatus and process therefor
US517463A US3923087A (en) 1972-07-24 1974-10-24 Drum-type debarking apparatus including log deflector means
US05/517,894 US3948300A (en) 1971-08-31 1974-10-25 Debarking apparatus including log velocity controlling means

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Application Number Priority Date Filing Date Title
US00274190A US3807469A (en) 1972-07-24 1972-07-24 Barking apparatus and process therefor

Publications (1)

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US3807469A true US3807469A (en) 1974-04-30

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US00274190A Expired - Lifetime US3807469A (en) 1971-08-31 1972-07-24 Barking apparatus and process therefor

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US (1) US3807469A (enrdf_load_stackoverflow)
JP (1) JPS5131732B2 (enrdf_load_stackoverflow)
AT (1) AT340127B (enrdf_load_stackoverflow)
BR (1) BR7305509D0 (enrdf_load_stackoverflow)
CA (1) CA993325A (enrdf_load_stackoverflow)
DE (1) DE2334441C3 (enrdf_load_stackoverflow)
FI (1) FI59212C (enrdf_load_stackoverflow)
GB (1) GB1395298A (enrdf_load_stackoverflow)
NO (1) NO136139C (enrdf_load_stackoverflow)
SE (1) SE413642B (enrdf_load_stackoverflow)
SU (1) SU680625A3 (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3923087A (en) * 1972-07-24 1975-12-02 Ingersoll Rand Canada Drum-type debarking apparatus including log deflector means
US3948300A (en) * 1971-08-31 1976-04-06 Canadian Ingersoll-Rand Company Ltd. Debarking apparatus including log velocity controlling means
US5247978A (en) * 1990-05-02 1993-09-28 Kone Ov Procedure and apparatus for controlling a barking process
US5337811A (en) * 1992-08-06 1994-08-16 Fulghum Industries, Inc. Debarker infeed conveyor
US6009921A (en) * 1999-04-05 2000-01-04 The Price Companies, Inc. Highlift antiwear attachment for angle debarking drum lifters
US6851461B2 (en) * 2002-07-12 2005-02-08 Carmanah Design And Manufacturing Apparatus for debarking logs with reversible rotation for varying the rate of debarking
US20060169359A1 (en) * 2005-01-28 2006-08-03 Carmanah Design And Manufacturing Inc. Debarking apparatus with adjustable rate of debarking

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1463263A (en) * 1974-10-24 1977-02-02 Ingersoll Rand Canada Drum type debarking apparatus including log deflector means

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US889292A (en) * 1908-06-02 Carl Bache-Wueg Bark-removing machine.
US1228374A (en) * 1916-02-12 1917-05-29 John J Ross Barking-drum.
US2943656A (en) * 1956-08-24 1960-07-05 Coosa River News Print Company Pulpwood-debarking drum having angularly slotted wall and stationary shearing bars
US3080898A (en) * 1960-04-22 1963-03-12 Combustion Eng Tunnel barker

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US889292A (en) * 1908-06-02 Carl Bache-Wueg Bark-removing machine.
US1228374A (en) * 1916-02-12 1917-05-29 John J Ross Barking-drum.
US2943656A (en) * 1956-08-24 1960-07-05 Coosa River News Print Company Pulpwood-debarking drum having angularly slotted wall and stationary shearing bars
US3080898A (en) * 1960-04-22 1963-03-12 Combustion Eng Tunnel barker

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3948300A (en) * 1971-08-31 1976-04-06 Canadian Ingersoll-Rand Company Ltd. Debarking apparatus including log velocity controlling means
US3923087A (en) * 1972-07-24 1975-12-02 Ingersoll Rand Canada Drum-type debarking apparatus including log deflector means
US5247978A (en) * 1990-05-02 1993-09-28 Kone Ov Procedure and apparatus for controlling a barking process
US5337811A (en) * 1992-08-06 1994-08-16 Fulghum Industries, Inc. Debarker infeed conveyor
US6009921A (en) * 1999-04-05 2000-01-04 The Price Companies, Inc. Highlift antiwear attachment for angle debarking drum lifters
US6851461B2 (en) * 2002-07-12 2005-02-08 Carmanah Design And Manufacturing Apparatus for debarking logs with reversible rotation for varying the rate of debarking
US20060169359A1 (en) * 2005-01-28 2006-08-03 Carmanah Design And Manufacturing Inc. Debarking apparatus with adjustable rate of debarking

Also Published As

Publication number Publication date
BR7305509D0 (pt) 1974-09-05
GB1395298A (en) 1975-05-21
AT340127B (de) 1977-11-25
FI59212B (fi) 1981-03-31
FI59212C (fi) 1981-07-10
JPS4954137A (enrdf_load_stackoverflow) 1974-05-25
NO136139C (no) 1977-08-03
SU680625A3 (ru) 1979-08-15
NO136139B (no) 1977-04-18
DE2334441C3 (de) 1979-04-26
JPS5131732B2 (enrdf_load_stackoverflow) 1976-09-08
CA993325A (en) 1976-07-20
DE2334441B2 (de) 1978-08-24
ATA625373A (de) 1977-03-15
SE413642B (sv) 1980-06-16
DE2334441A1 (de) 1974-02-07

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