US2694425A - Automatically adjustable feeding device for logs - Google Patents

Automatically adjustable feeding device for logs Download PDF

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Publication number
US2694425A
US2694425A US24164551A US2694425A US 2694425 A US2694425 A US 2694425A US 24164551 A US24164551 A US 24164551A US 2694425 A US2694425 A US 2694425A
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US
United States
Prior art keywords
logs
discs
feeding device
ridges
feeding
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
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English (en)
Inventor
Skoglund Oskar
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Individual
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Individual
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Filing date
Publication date
Priority to DES24387A priority Critical patent/DE886221C/de
Application filed by Individual filed Critical Individual
Priority to US24164551 priority patent/US2694425A/en
Application granted granted Critical
Publication of US2694425A publication Critical patent/US2694425A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • 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
    • Y10T83/00—Cutting
    • Y10T83/647—With means to convey work relative to tool station
    • Y10T83/664—Roller
    • Y10T83/6643—Shaped to conform to work

Definitions

  • This invention relates to feeding devices for logs and the invention has for its primary object to provide a feeding device automatically adapting itself to varying diameters of the logs so that the feeding device may elfectively advance both relatively small and thick logs.
  • Another object of the invention is to provide a feeding device maintaining the logs with the centre thereof in a predetermined position vertically and horizontally independently of their diameters so that the logs always are centered relatively to a succeeding working machine, such as a barking machine.
  • Still another object of the invention is to provide a feeding device advancing the log at a rate of speed decreasing When the diameter of the logs increases so that the succeeding barking machine without varying the working speed thereof can effectively bark both relatively small and thick logs.
  • Fig. l is a top plan view of the present barking machine.
  • Fig. 2 is a side elevation thereof.
  • Fig. 3 is an end view, partly in section, thereof.
  • the feeding device shown on the drawings comprises a frame generally denoted by 1 in which horizontal shafts 2 are fixed in superimposed position by means of nuts 3. Mounted on each shaft 2 for rotation and axial shifting thereon are two sleeves 4 each of which at one end carries a disk-shaped feeding member 5 and at its opposite end a gear 6. The feeding members 5 associated with each shaft 2 are mounted opposite each other and grooved at the faces facing each other as indicated at 7 in Figs. 2 and 3.
  • the ridges 8 between the grooves in the faces 7 of the feeding members 5 may have different lengths so that, for instance, ridges 8 of increased length alternate with pairs of ridges 8 of reduced length.
  • the ridges 8 of the two feeding members 5 of each pair converge in relation to each other toward the axes of the feeding members 5 so that the four feeding members 5 together form a generally diamond-shaped passage therebetween as shown in Fig. 3 through which passage the logs are adapted to be advanced.
  • the ridges 8 extend rectilinearly on the drawing it is possible within the scope of the invention to construct the ridges more or less convexedly or concavely curved or angular-1y.
  • Sleeves 4 are surrounded by non-rotary but axially shiftable sleeves 9 interconnected in pairs by rods 10 received intermediate the ends thereof in forks 11 mounted for rotation in frame 1 by being secured to vertical shafts 12 journalled in bearings 13 at the top and bottom of frame 1. Secured to shafts 12 are gear segments 14 engaging each other as shown in Fig. 1 for a purpose set forth in the following.
  • a spiral spring 15 is at one end anchored to a pin 21 secured to frame 1 and engages at its opposite end a gear 22 mounted for rotation in frame 1 and engaging a gear segment 23 fixed to the bottom shaft 12 in Fig. 1.
  • spring 15 by means of gearings 23 and 14, forks 11, rods 10 and sleeves 9 acting as pressure transmitting members press the feeding members 5 of each pair toward each other.
  • a shaft 16 is journalled in bearings at the top of frame 1 said shaft at both ends being provided with teeth of considerable length engaging the upper gears 6.
  • rollers for supporting and guiding the logs are mounted at the outlet and inlet sides of the feeding device, the rollers at the former side being shown at 18 in Fig. 1.
  • Rollers 18 are supported by levers 19 secured to shafts 20 mounted for rotation in frame 1 and just as shafts 12 interconnected by gear segments (not shown).
  • levers 19 just as forks 11 are loaded by a spring (not shown) in the manner described in the foregoing with reference to forks 11.
  • the feeding device shown on the drawings operates as follows: I
  • feeding members 5 are rotated by teeth 17 and gears 6 by means of sleeves 4, the ridges 8 then gripping a log introduced into the passage between the four feeding members 5 and advancing said log to a succeeding working machine, such as a barking machine, over the supporting and guiding rollers 18. According to its size the log then widens the passage referred to by pressing the opposed feeding members 5 away from each another against the action of springs 15. All of the feeding members 5 are shifted equally due to the synchronizing secured by the gear segments 14 so that the centre of the log always will be situated at the centre of passage referred to.
  • the logs are advanced at a rate of speed decreasing when the diameter of the logs increases in that in smaller logs points on the ridges having a greater circumferential speed and in thicker logs points thereon having a smaller circumferential speed effect the feeding.
  • This is exactly what is desired in barking machines in order that the latter when working at a constant rate of speed may find time to bark logs of larger diameter.
  • a feeding device for logs for use in connection with barking machines and comprising in combination a frame, two superimposed pairs of opposed pairs of disk-shaped feeding members having ridges at the faces thereof facing each other, shafts fixed in said frame, first sleeves mounted for rotation and axial shifting on said shafts and carrying at one end said feeding members, gears secured to the opposite end of said sleeves, an actuating shaft for rotating said gears, other sleeves surrounding said first sleeves and interposed between said feeding members and said gears, and spring means for resiliently urging said feeding members toward each other by means of said other sleeves so as to press said ridges against the circumference of 1sjaid logs for advancing said logs by said feeding memers.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Nonmetal Cutting Devices (AREA)
US24164551 1951-04-28 1951-08-13 Automatically adjustable feeding device for logs Expired - Lifetime US2694425A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DES24387A DE886221C (de) 1951-04-28 1951-08-11 Vorschubeinrichtung fuer Baumstaemme
US24164551 US2694425A (en) 1951-04-28 1951-08-13 Automatically adjustable feeding device for logs

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE886221X 1951-04-28
US24164551 US2694425A (en) 1951-04-28 1951-08-13 Automatically adjustable feeding device for logs

Publications (1)

Publication Number Publication Date
US2694425A true US2694425A (en) 1954-11-16

Family

ID=26660394

Family Applications (1)

Application Number Title Priority Date Filing Date
US24164551 Expired - Lifetime US2694425A (en) 1951-04-28 1951-08-13 Automatically adjustable feeding device for logs

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US (1) US2694425A (de)
DE (1) DE886221C (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2785715A (en) * 1952-09-24 1957-03-19 Soderhamns Verkst Ers Aktiebol Arrangement for feeding forward of logs and the like
US2891589A (en) * 1955-06-13 1959-06-23 Sunds Verkst Er Aktiebolag Feeding mechanism in barking machines
US2983291A (en) * 1957-01-22 1961-05-09 Ingersoll Rand Canada Feed conveyor for a log debarker
US3098512A (en) * 1959-09-04 1963-07-23 Carl W Kendrick Debarking machine
US6216756B1 (en) 1999-03-22 2001-04-17 Howard Carl Mason Log processing apparatus

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US59641A (en) * 1866-11-13 Improvement in sawing-machines
US397114A (en) * 1889-02-05 dolsen
US632979A (en) * 1899-05-04 1899-09-12 Henry Wolfe Rossing-machine.
US685812A (en) * 1901-04-18 1901-11-05 Frank E Bartholomew Attachment for log-sawing machines.
US1043169A (en) * 1911-04-03 1912-11-05 J & C G Bolinders Mek Verktads Aktiebolag Means for placing timber in position for sawing.
US1248700A (en) * 1917-05-29 1917-12-04 Victor J Olson Log-trimming machine.
DE480711C (de) * 1926-05-17 1929-08-07 Friedrich Sliweczka Vorschubvorrichtung fuer Kreissaegen zur Holzbearbeitung
US2032585A (en) * 1932-10-04 1936-03-03 Darcy E Lewellen Variable speed transmission mechanism
US2120383A (en) * 1936-09-04 1938-06-14 American Electric Fusion Corp Pulley
US2448689A (en) * 1944-10-16 1948-09-07 Auxilius P Schnyder Debarking apparatus
US2477922A (en) * 1946-09-18 1949-08-02 Walter B Emery Machine for debarking and trimming either standing or felled tree trunks
US2501848A (en) * 1946-04-10 1950-03-28 Rayonier Inc Log barker having water-jets oscillatable about longitudinal log axis
US2625185A (en) * 1950-05-26 1953-01-13 Roy L Merry Sawing machine with improved feed actuation

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE241772C (de) *

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US59641A (en) * 1866-11-13 Improvement in sawing-machines
US397114A (en) * 1889-02-05 dolsen
US632979A (en) * 1899-05-04 1899-09-12 Henry Wolfe Rossing-machine.
US685812A (en) * 1901-04-18 1901-11-05 Frank E Bartholomew Attachment for log-sawing machines.
US1043169A (en) * 1911-04-03 1912-11-05 J & C G Bolinders Mek Verktads Aktiebolag Means for placing timber in position for sawing.
US1248700A (en) * 1917-05-29 1917-12-04 Victor J Olson Log-trimming machine.
DE480711C (de) * 1926-05-17 1929-08-07 Friedrich Sliweczka Vorschubvorrichtung fuer Kreissaegen zur Holzbearbeitung
US2032585A (en) * 1932-10-04 1936-03-03 Darcy E Lewellen Variable speed transmission mechanism
US2120383A (en) * 1936-09-04 1938-06-14 American Electric Fusion Corp Pulley
US2448689A (en) * 1944-10-16 1948-09-07 Auxilius P Schnyder Debarking apparatus
US2501848A (en) * 1946-04-10 1950-03-28 Rayonier Inc Log barker having water-jets oscillatable about longitudinal log axis
US2477922A (en) * 1946-09-18 1949-08-02 Walter B Emery Machine for debarking and trimming either standing or felled tree trunks
US2625185A (en) * 1950-05-26 1953-01-13 Roy L Merry Sawing machine with improved feed actuation

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2785715A (en) * 1952-09-24 1957-03-19 Soderhamns Verkst Ers Aktiebol Arrangement for feeding forward of logs and the like
US2891589A (en) * 1955-06-13 1959-06-23 Sunds Verkst Er Aktiebolag Feeding mechanism in barking machines
US2983291A (en) * 1957-01-22 1961-05-09 Ingersoll Rand Canada Feed conveyor for a log debarker
US3098512A (en) * 1959-09-04 1963-07-23 Carl W Kendrick Debarking machine
US6216756B1 (en) 1999-03-22 2001-04-17 Howard Carl Mason Log processing apparatus

Also Published As

Publication number Publication date
DE886221C (de) 1953-08-13

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