US2788034A - Rotary ring-type debarker, including means for disintegrating slivers of bark - Google Patents

Rotary ring-type debarker, including means for disintegrating slivers of bark Download PDF

Info

Publication number
US2788034A
US2788034A US517832A US51783255A US2788034A US 2788034 A US2788034 A US 2788034A US 517832 A US517832 A US 517832A US 51783255 A US51783255 A US 51783255A US 2788034 A US2788034 A US 2788034A
Authority
US
United States
Prior art keywords
bark
ring
debarking
slivers
disintegrating
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
US517832A
Other languages
English (en)
Inventor
Brundell Per Gunnar
Jonsson Karl-Erik Arnold
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.)
SODERHAMNS VERKSTADER AB
Original Assignee
SODERHAMNS VERKSTADER AB
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 SODERHAMNS VERKSTADER AB filed Critical SODERHAMNS VERKSTADER AB
Application granted granted Critical
Publication of US2788034A publication Critical patent/US2788034A/en
Anticipated expiration legal-status Critical
Priority claimed from FI760896A external-priority patent/FI70384C/fi
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • B27L1/04—Debarking or removing vestiges of branches from trees or logs; Machines therefor by rubbing the trunks in rotating drums
    • B27L1/05—Drums therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/70—Interfitted members
    • Y10T403/7075—Interfitted members including discrete retainer

Definitions

  • the tools remove the bark from the log without any loss of the wood layers and they operate by a shearing or scraping action substantially at right angles to the longitudinal axis of the log.
  • the bark removed from the log varies greatly in size.
  • the bark being brittle, is removed in very small pieces which can readily be disassociated from the vicinity of the barking tool by fans, scoops or the like.
  • the pieces of bark are larger, but nevertheless they can be readily handled.
  • the present invention therefore, has for one object to provide a rotary debarking machine of the hollowhead or rotary-ring type which incorporates a simplified bark-cutting or disintegrating mechanism.
  • a rotary-ring debarking mechanism which includes stationary shear or bark-disintegrating means in combination with debarking tools on the ring arranged to cooperate with the stationary means so that the revolving movement of the tool will establish shearing or disintegrating forces to prevent the agglomeration of bark slivers into balls and to cut or tear off long slivers to reduce their length.
  • the invention provides a plurality of stationary disintegrating or cutting means for cooperation with revolving tools.
  • the cutting means may be in the form of steel members mounted radially of the axis of rotation of the ring, or an arrangement of stationary spikes or the like.
  • Figure l is a longitudinal vertical sectional view as taken on the line 11 of Figure 2 diagrammatically illustrating'a rotary ring-type debarking machine incorporating one form of stationary disintegrating means
  • Figure 2 is a transverse vertical sectional view as taken along the line 2-2 of Figure 1,
  • Figure 3 is a fragmentary transverse vertical sectional view as taken on the line 3-3 of Figure 1, and illustrates the mechanism for applying resilient or elastic force to the tools
  • FIG. 4 is a fragmentary cross-sectional view taken on the line 4-4 of Figure 1,
  • Figure 5 is an exploded perspective view illustrating a specially shaped debarking tool and the mounting therefor
  • Figure 6a is a fragmentary left end elevation of Figure 6 as seen from the viewing line fizz-6a of Figure 6, and further illustrates the modified form of disintegrating means
  • Figure 7 is a view similar to Figure 6, but illustrating a further modification
  • Figure 8 is a fragmentary elevation of the arrangement in Figure 7 as viewed from the right.
  • the log to be debarked is fed forward while restrained against rotation by roller mechanisms including rollers 2 and 3 arranged on both sides of the debarking mechanism.
  • the debarking mechanism includes a hollow rotor or ring 4 suitably journaled on an annular ring of ball bearings for rotation relative to a stator 5.
  • the rotor includes a sheave-forming portion 6 over which are mounted V- belts 7.
  • the supporting structure and the drive for the V-belts is not shown. However, examples of such are embodied in the above-referred to application.
  • On the rotor 4 are arranged a plurality of debarking tools 8.
  • any slivers which tend to wind themselves around the tools are cut or torn directly between the edges 22 of the steel members 21 and the concave edges 20 of the tools, regardless of the diameter of the log on which the tool is operating.
  • small diameter logs slivers are hurled radially outward toward the tool-carrying shafts and thus will come into the sphere of operation of the shear members 21.
  • large diameter logs the slivers will tend to be located close to the tip of the tools but will be subjected to the shearing action of the steel members 21 due to the revolution of the tools relative thereto.
  • counterstecls or stationary members 21 can be adjustably mounted on the interior of the wall 15 for movement in directions radially of the opening 16 so that the stationary shear members can be adjusted with respect to the diameter of the logs being dcbarked.
  • the debarging tools 3 are so arranged that the arms 19 substantially contain a plane extending at right angles to the axis of rotation of the rotor or ring 4.
  • the crescent-shaped arms can be bent somewhat backwards as indicated by an arm 19' in Fig. 6.
  • the tips of the tools do not pass quite as close to the active face of the stationary members 21, when the tools are in their outermost position the arrangement is such that any clogging is at an absolute minimum, in striking contrast to arrangements in which no stationary shear components or spikes are utilized.
  • the present invention provides a compact rotary-ring debarking mechanism which in cludes a plurality of tool members each comprising a generally planar arm of crescent shape supported for swinging movement toward and away from the axis of the rotor and having a bark-removing tip extending parallel to the axis of rotation from an outfeed planar side of the arm, and which mechanism further includes stationary shear members mounted closely adjacent an infeed side of the path of revolution of the tool-carrying arms, said shear members co-operating with the toolcarrying arms in disintegrating or shearing bark slivers and preventing the formation of balls of bark and the clogging of the debarker.
  • a rotary-ring debarker comprising a rotor through which logs to be debarked are fed, debarking tool means carried by the rotor, and stationary shear means for cooperation with the tool means for disintegrating slivers of bark removed from such logs and for preventing accumulations of bark on the tools.
  • a compact rotary-ring debarking mechanism including a rotor and a plurality of tool members comprising arms of generally planar shape, each of said arms being supported for swinging movement toward and away from an axis of rotation of the rotor and having a bark-removing tip extending parallel to the axis of rotation from that planar side of the arm facing an outgoing axially feddog and stationary shear members mounted closely adjacent a path of revolution of those planar sides of the toolcarrying arms that face toward an oncoming log for cooperation with the tool-carrying arms in disintegrating or shearing bark slivers and preventing the formation of balls of bark and the clogging of the debarker.
  • a rotary-ring debarking machine of the type in which logs to be debarked are fed axially through the ring while restrained against rotation, the combination of a plurality of generally planar tool-carrying arms distributed about the ring and mounted for pivotal movement toward and away from the axis of the ring, and stationary shearing means fixedly mounted in proximity to an infeed side of a plane common to infeed planar sides of the arms for cooperation with the arms in disintegrating long slivers of bark and preventing accumulations of bark during debarking operations.
  • a hood surrounds said ring, a front wall of said hood being disposed in spaced relation to the infeed planar sides of said arms and having an aperture therein of a size sufiicient to accommodate the largest diameter log to be debarked, and said shearing means comprising spikes extending inwardly from an interior surface of the front wall and directed toward said ring.
  • a hood surrounds said ring, a wall of said hood being disposed in spaced relation to the infeed planar sides of said arms and having an aperture therein of a size sufiicient to accommodate the largest diameter log to be debarked, and said shearing means being fixed to an interior surface of said wall.
  • shearing means comprise straight radially extending metal members disposed on opposite sides of the axis of the ring.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)
US517832A 1954-06-28 1955-06-24 Rotary ring-type debarker, including means for disintegrating slivers of bark Expired - Lifetime US2788034A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE953466X 1954-06-28
SE2788034X 1954-06-28
FI760896A FI70384C (fi) 1976-04-02 1976-04-02 Kapningsanordning foer barkstrimlor foer en rotorbarkningsmaskin

Publications (1)

Publication Number Publication Date
US2788034A true US2788034A (en) 1957-04-09

Family

ID=27240970

Family Applications (1)

Application Number Title Priority Date Filing Date
US517832A Expired - Lifetime US2788034A (en) 1954-06-28 1955-06-24 Rotary ring-type debarker, including means for disintegrating slivers of bark

Country Status (2)

Country Link
US (1) US2788034A (de)
DE (1) DE2711758A1 (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899994A (en) * 1959-08-18 Apparatus for stripping bark
US3053294A (en) * 1959-01-24 1962-09-11 Lindberg Hans Fluid pressure operated mechanism for actuating the debarking tools of a debarking machine of the rotaryring type
US4074738A (en) * 1976-04-02 1978-02-21 Valo V L Arrangement for a rotor barking machine
US4522242A (en) * 1982-09-30 1985-06-11 Hutson James Henry Hydraulic fed log debarker
US4585042A (en) * 1982-09-30 1986-04-29 Hutson James Henry Log debarker
US4657056A (en) * 1982-09-30 1987-04-14 Hutson James Henry Log debarking tool assembly
US5472027A (en) * 1994-12-02 1995-12-05 Nicholson Manufacturing Company Log bark slitting machine
US7350548B1 (en) 2006-10-16 2008-04-01 Nicholson Manufacturing Ltd. Swing arm assembly with replaceable insert for use with a debarker apparatus
US20090178730A1 (en) * 2008-01-15 2009-07-16 Reimler James L Log debarking blade
US20100200116A1 (en) * 2009-02-10 2010-08-12 Reimler James L Log debarking tool and tool tip
US9073233B2 (en) 2011-05-31 2015-07-07 Nicholson Manufacturing Ltd. Debarker systems with adjustable rings

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI770860A (fi) * 1977-03-18 1978-09-19 Valo Antti T Traedbearbetningsmaskin

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1070548A (fr) * 1951-11-03 1954-07-28 Svenska Cellulosa Ab Perfectionnements aux machines à écorcer les arbres
GB726404A (en) * 1952-01-31 1955-03-16 Olov Carl Gustav Wennberg Improvements in and relating to bark peeling machines

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2240921C3 (de) * 1972-08-19 1975-05-15 Maschinenfabrik Esterer Ag, 8262 Altoetting Einrichtung zum Regeln des Anpressdrucks der Schälwerkzeuge bei einem Ringentrinder

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1070548A (fr) * 1951-11-03 1954-07-28 Svenska Cellulosa Ab Perfectionnements aux machines à écorcer les arbres
GB726404A (en) * 1952-01-31 1955-03-16 Olov Carl Gustav Wennberg Improvements in and relating to bark peeling machines

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899994A (en) * 1959-08-18 Apparatus for stripping bark
US3053294A (en) * 1959-01-24 1962-09-11 Lindberg Hans Fluid pressure operated mechanism for actuating the debarking tools of a debarking machine of the rotaryring type
US4074738A (en) * 1976-04-02 1978-02-21 Valo V L Arrangement for a rotor barking machine
US4522242A (en) * 1982-09-30 1985-06-11 Hutson James Henry Hydraulic fed log debarker
US4585042A (en) * 1982-09-30 1986-04-29 Hutson James Henry Log debarker
US4657056A (en) * 1982-09-30 1987-04-14 Hutson James Henry Log debarking tool assembly
US5472027A (en) * 1994-12-02 1995-12-05 Nicholson Manufacturing Company Log bark slitting machine
AU677923B2 (en) * 1994-12-02 1997-05-08 Nicholson Manufacturing Company Log bark slitting machine
US7350548B1 (en) 2006-10-16 2008-04-01 Nicholson Manufacturing Ltd. Swing arm assembly with replaceable insert for use with a debarker apparatus
US8256476B2 (en) 2006-10-16 2012-09-04 Nicholson Manufacturing Ltd. Swing arm assembly with replaceable insert for use with a debarker apparatus
US20090178730A1 (en) * 2008-01-15 2009-07-16 Reimler James L Log debarking blade
US7806153B2 (en) 2008-01-15 2010-10-05 Reimler James L Log debarking blade
US20100200116A1 (en) * 2009-02-10 2010-08-12 Reimler James L Log debarking tool and tool tip
US7931055B2 (en) 2009-02-10 2011-04-26 Reimler James L Log debarking tool and tool tip
US9073233B2 (en) 2011-05-31 2015-07-07 Nicholson Manufacturing Ltd. Debarker systems with adjustable rings

Also Published As

Publication number Publication date
DE2711758A1 (de) 1977-10-06

Similar Documents

Publication Publication Date Title
US2788034A (en) Rotary ring-type debarker, including means for disintegrating slivers of bark
US4009837A (en) Wood chipping apparatus
US2712904A (en) Unitary wood chipping disk with removable knife assembly and independent wear plate
EP3061581B1 (de) Zerkleinerer
US4053004A (en) Helical head comminuting shear
US4736781A (en) Stump disintegrator
US5139063A (en) Chipper sliver trimmer
US5060873A (en) Wood chipper fin chip separator
US4201257A (en) Timber processing machine
US2997082A (en) Rotary crossgrain wood flaker
US2860672A (en) Arrangement for disintegrating slivers of bark in debarking machines of the so-called hollow-head type
US5961057A (en) Wood chipping machines
US4396048A (en) Debarking machine
US5044412A (en) Method and apparatus for debarking logs
US5950406A (en) Method and apparatus for macerating plant material
US4834155A (en) Chipper
US4403743A (en) Articulated knife rotor assembly in a machine for reducing materials
US3807469A (en) Barking apparatus and process therefor
US5423361A (en) Debarker bit with fiber cutter
US5373876A (en) Chipping control device and disc chipper
FI79798B (fi) Vedhuggningsmaskin.
FI102820B (fi) Menetelmä ja syöttösuiste puiden syöttämiseksi kiekkohakkuun
US7806153B2 (en) Log debarking blade
EP0135519B1 (de) Zerkleinerer
US6260592B1 (en) Cutting piece and cutting arm for a debarking machine of a hollow-rotor type