US3019825A - Barking machines - Google Patents

Barking machines Download PDF

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Publication number
US3019825A
US3019825A US861051A US86105159A US3019825A US 3019825 A US3019825 A US 3019825A US 861051 A US861051 A US 861051A US 86105159 A US86105159 A US 86105159A US 3019825 A US3019825 A US 3019825A
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United States
Prior art keywords
log
drum
holder
rolls
barking
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
US861051A
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English (en)
Inventor
Herolf Kjell Olof Gunnar
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.)
Valmet AB
Original Assignee
Sunds Verkstader AB
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Publication date
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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
    • B27L1/04—Debarking or removing vestiges of branches from trees or logs; Machines therefor by rubbing the trunks in rotating drums
    • B27L1/045—Feeding devices therefor

Definitions

  • the drum is journaled in a holder which is provided in the frame of the machine and which is swingable in the vertical direction. The swinging movement of the holder carrying the drum is controllable by means of a log feeding mechanism driven in some suitable manner.
  • the holder for the drum may be mechanically connected with a vertically movable adjusting means which, when a log is being fed into the drum, together with the holder and the drum is movable downwards from its upper, inactive position, to an active lower position corresponding to the thickness of the log, but which, when the log has left the drum, is movable back into its upper position together with the holder and the drum.
  • FIGS. 1-7 show a suitable embodiment of the invention, FIG. 1 showing the machine when viewed from the log supply end, FIG. 2 showing a side elevational View of the machine and FIG. 3 showing a top plan view of the same.
  • FIG. 4 shows the machine, when viewed from the log supply end, when a narrow log is being fed through the machine, and FIG. 5, in the same way, shows the machine when a thick log is being fed therethrough.
  • FIG. 6, on a larger scale shows a side elevational view of the holder, carrying the drum, and of the feed rolls.
  • FIG. 7 shows a vertical sectional view taken on line 7-7 of FIG. 6.
  • FIG. 8 is a side elevational view corresponding to that of FIG.
  • FIG. 9 shows a vertical sectional view taken on line 9-9 of FIG. 8.
  • FIG. also is a side elevational view corresponding to that of FIG. 6 but showing a somewhat modified embodiment of the log supply and discharge mechanisms.
  • FIG. 11 shows a vertical sectional view taken on line 1111 of FIG. 10.
  • the machine consists of a frame 1, in which there is swingably mounted a holder 2, carrying a rotary drum 3 with a number of barking members 4 (FIGS. 3 and 6), mounted therein.
  • a frame 1 in which there is swingably mounted a holder 2, carrying a rotary drum 3 with a number of barking members 4 (FIGS. 3 and 6), mounted therein.
  • the frame 1 there are, furthermore, swingably mounted two arms 5 and 6, one arm 5 being located in front of the holder 2 carrying the drum 3 and the other arm 6 being located behind said holder (FIG.
  • Each of the arms Sand 6 carries a feed roll 7 and 8, respectively. Said rolls are driven in a known manner by suitable means (not shown), see U.S. Patent No. 2,855,010.
  • Each of the arms 5 and 6, by means of a link member 9 and 10, respectively, is coupled with the holder 2.
  • FIG. 4 there is shown a thin 10g and in FIG. 5 a thick log 11 in the central opening 12 of the holder '2.
  • the link members 9 and 14] are provided with integral rubber heads 14, permitting the link
  • the pivot axle of the arms 5 and 6, carrying the feed rolls 7 and 8, is indicated by 15, and the pivot axle of the holder 2, which is positioned on a lower level than the pivot axle 15, is indicated by 16.
  • a hydraulic cylinder '17 or the like is coupled between the arm 5 and the frame of the machine.
  • a similar hydraulie cylinder 17 is coupled between the arm 6 and the frame of the machine. Said cylinders also serve as damping means and arresting members.
  • a supply conveyor 18 In front of the supply rolls 7 and 13 there is provided a supply conveyor 18 (FIG. 2). Below the feed roll 8 there are two double-conical supporting rolls 19 and 20, which are located one after the other in the direction of feed of the log and which are stationary. Behind said supporting rolls there is provided a discharge conveyor 21 The supporting rolls 13, 19 and 20 preferably are embodied as .disk rolls of the appearance as shown for the roll 13 in FIGS. 1, 4, 5 and 7. Between the supporting roll 13 and the holder 2 for the drum there is provided a stationary log guiding means 22, consisting of plates extending into the spaces between the disks of the roll 13 (FIG.
  • Said log guiding means being located quite close to the holder 2, will prevent the log from throwing, when the log is leaving the supply rolls 7 and 13 during its passage through the machine.
  • the two upper rolls 7 and 8 are provided with spikes 23 or the like, for an effective engagement with the log and preventing the latter from rotating about its own axis. From FIG. 6 it will be seen that the tangent points of the discharge rolls 8, 19 and 20 on the log form a triangle, in which no angle at the base is more than 90, due to which the log will be held fast etfectively.
  • the feed rolls '7 and 8, which are adapted to be raised and lowered, and thus-due to the link connection 9 and Iiialso the holder 2 with the drum 3 are raised to their uper positions.
  • the arms 5 and 6 with the rolls 7 and 8 are swung downwardly until the feed roll 7 hits the log, which is resting on the stationary supporting roll 13.
  • the holder 2- with the drum is swung downwardly so much that the drum will become centered in relation to the log.
  • the parts in question will be caused to assume the positions shown in FIG. 4, and if the inserted log is a thick one, said same parts will be caused to assume the positions shown in FIG. 5.
  • the holder 2 with the drum thus will be caused to assume a position in which the center of the log will always be right in front of, or approximately right in front of, the centre of the drum.
  • the barking members 4 FIGS. 3 and 6
  • it will be inserted between the feed roll 8 and the stationary supporting rolls 19 and 20, from where it will then be removed by the discharge conveyor 21 (FIG. 2).
  • FIGS. 6 and 7 show the partly barked log 11 while being fed through the'machine.
  • the two arms 5 and 6 with the feed rolls 7 and 8 as well as the holder 2 with the drum 3 are swung upwardly to their upper positions under the influence of the hydraulic cylinders 17, when the log has left the drum, butare again swung downwardly, as mentioned above, as soon as another log has entered between to FIGS. 6 and 7 having been replaced by a stationary supporting r011 24 of the same design as the other stationary supporting rolls 13-, 19 and 20.
  • a stationary supporting r011 24 of the same design as the other stationary supporting rolls 13-, 19 and 20.
  • the tangent points also of the rolls 7, 13 and 24 on the log shall form'a triangle, in which no angle at the base is more than 90", due to which the lOg will be held'fast elfectively also at the place of insertion.
  • an additional feed roll 25 which is adapted to be raised and lowered and which is provided with spikes or the like, said roll being coupled with the roll 7 and being intended to enter into function, if said lastrnentioned roll is arranged to open by itself, without being actuated By coupling, in this manner, the roll 7 with an additional feed roll 25, the roll 7 may be made smaller than would otherwise be the case.
  • FIGS. 10 and 11 show an embodiment dilfering from the modification shown in FIGS. 8 and 9 in that the two supporting rolls 20 and 24- are smaller than the other two supporting rolls 13 and 19.
  • a compact construction is attained without the reliable functioning thereof being impaired.
  • the machine oifers the advantage that the log is caused to move through'the machine on substantially the same level as that assumed by the log on the supply and discharge conveyors.
  • a barking machine comprising a frame, a substantially horizontally disposed holder swingably mounted adjacent one end thereof about a pivot axis on said frame, the remainder of said holder being adapted to move substantially vertically, a rotary drum journaled in said holder and movable therewith, at least one barking member mounted insaid drum and adapted to engage a log which is passed axially through saidd rum, means for guiding a log longitudinally through said drum, said log-guiding means comprising a lower stationary conveyor, at least one arm swingably mounted adjacent one end thereof about a pivot axis to said frame, the other end of said arm being adapted to move substantially vertically above said stationary conveyor and a roll mounted adjacent said other end of said arm and movable therewith, said roll being adapted to engage a log on said stationary conveyor, and means including a link connecting said arm to said holder to cause vertical movement of said roll, effected by engagement thereof with the upper surface of a log, to automatically move said holder to center said drums with respect to
  • a barking machine as defined in claim 1 in which there are two of said arms swingably mounted on said frame, each carrying a roll adapted to engage a log which is passed through said drum, one of said arms being in front of said drum and the other behind said drum with respect to the direction of movement of a'log through said drum, and a link connecting each of said arms to said holder, each link comprising an elastic portion permitting a limited relative movement of the arms and rolls with respect to said holder and drum.
  • a barking machine as defined in claim 1 in which the pivot axis of said holder to said frame is at'a lower lever than the pivot axis of said arm to saidframe.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)
US861051A 1958-12-22 1959-12-21 Barking machines Expired - Lifetime US3019825A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE3019825X 1958-12-22
SE1180115X 1958-12-22

Publications (1)

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US3019825A true US3019825A (en) 1962-02-06

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US861051A Expired - Lifetime US3019825A (en) 1958-12-22 1959-12-21 Barking machines

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US (1) US3019825A (de)
DE (1) DE1180115B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3189068A (en) * 1961-05-10 1965-06-15 Soderhamns Verkst Er Ab Log debarking machine
US3570648A (en) * 1968-09-27 1971-03-16 Tillman B Gillespie Jr Block feeding apparatus
US6016626A (en) * 1996-12-17 2000-01-25 Auer; Peter Machine and process for working the surface of long, narrow objects

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202011000281U1 (de) * 2011-02-08 2011-06-09 Wiedemann, Josef, 95367 Maschine zum Entrinden, Entbasten oder Weißschälen von Rundhölzern

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE517111C (de) * 1929-05-04 1931-01-31 Anders Hansson Rindenschaelmaschine
US2591751A (en) * 1948-08-04 1952-04-08 Clark W Adams Whirling roughing and finishing cutterhead machine for debarking logs and the like
US2749952A (en) * 1954-08-31 1956-06-12 Crown Zellerbach Corp Log debarker having revolving knives simultaneously swingable by differential-type planetary-gear-train
US2908302A (en) * 1957-07-15 1959-10-13 Sr Carl W Mullis Rotary debarker having pivotable barkremoving tools biased by fluid under pressure in an annular tank
US2925107A (en) * 1958-05-06 1960-02-16 L M Equipment Company Annular debarking mechanism and control

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE517111C (de) * 1929-05-04 1931-01-31 Anders Hansson Rindenschaelmaschine
US2591751A (en) * 1948-08-04 1952-04-08 Clark W Adams Whirling roughing and finishing cutterhead machine for debarking logs and the like
US2749952A (en) * 1954-08-31 1956-06-12 Crown Zellerbach Corp Log debarker having revolving knives simultaneously swingable by differential-type planetary-gear-train
US2908302A (en) * 1957-07-15 1959-10-13 Sr Carl W Mullis Rotary debarker having pivotable barkremoving tools biased by fluid under pressure in an annular tank
US2925107A (en) * 1958-05-06 1960-02-16 L M Equipment Company Annular debarking mechanism and control

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3189068A (en) * 1961-05-10 1965-06-15 Soderhamns Verkst Er Ab Log debarking machine
US3570648A (en) * 1968-09-27 1971-03-16 Tillman B Gillespie Jr Block feeding apparatus
US6016626A (en) * 1996-12-17 2000-01-25 Auer; Peter Machine and process for working the surface of long, narrow objects

Also Published As

Publication number Publication date
DE1180115B (de) 1964-10-22

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