[go: up one dir, main page]

US3165961A - Apparatus for automatically cutting defective veneer sheets - Google Patents

Apparatus for automatically cutting defective veneer sheets Download PDF

Info

Publication number
US3165961A
US3165961A US241223A US24122362A US3165961A US 3165961 A US3165961 A US 3165961A US 241223 A US241223 A US 241223A US 24122362 A US24122362 A US 24122362A US 3165961 A US3165961 A US 3165961A
Authority
US
United States
Prior art keywords
veneer
saw
veneer sheets
clipper
sheets
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
US241223A
Inventor
Albert S Hammond
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.)
Weyerhaeuser Co
Original Assignee
Weyerhaeuser Co
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 Weyerhaeuser Co filed Critical Weyerhaeuser Co
Priority to US241223A priority Critical patent/US3165961A/en
Priority to US37591364 priority patent/US3244041A/en
Application granted granted Critical
Publication of US3165961A publication Critical patent/US3165961A/en
Anticipated expiration legal-status Critical
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
    • B27L5/00—Manufacture of veneer ; Preparatory processing therefor
    • B27L5/08—Severing sheets or segments from veneer strips; Shearing devices therefor; Making veneer blanks, e.g. trimming to size
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G1/00—Machines or devices for removing knots or other irregularities or for filling-up holes
    • 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
    • Y10T83/525—Operation controlled by detector means responsive to work
    • Y10T83/533—With photo-electric work-sensing means
    • 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
    • Y10T83/525—Operation controlled by detector means responsive to work
    • Y10T83/541—Actuation of tool controlled in response to work-sensing means
    • Y10T83/543—Sensing means responsive to work indicium or irregularity
    • 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
    • Y10T83/768—Rotatable disc tool pair or tool and carrier
    • Y10T83/7684—With means to support work relative to tool[s]
    • Y10T83/7693—Tool moved relative to work-support during cutting
    • 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
    • Y10T83/768—Rotatable disc tool pair or tool and carrier
    • Y10T83/7755—Carrier for rotatable tool movable during cutting
    • Y10T83/7788—Tool carrier oscillated or rotated

Definitions

  • This invention relates to apparatus for automatically cutting defective veneer sheets in half to produce crossbanding for plywood. Specifically, this invention relates to apparatus for automatically cutting defective veneer sheets in half by using photoelectric tubes that detect the defective portions in the veneer sheet and automatically actuate a saw to cut the veneer sheet in half.
  • FIGURE 1 is a side elevational view, partly in section, of the automatic veneer saw and clipper table embodying the present invention.
  • FIGURE 2 is a top plan view of the automatic veneer saw and clipper illustrated in FIGURE 1.
  • FIGURE 3 is a cross-sectional view taken on line 3-3 of FIGURE 1.
  • FIGURE 4 is a cross-sectional view similar to FIG- URE 3 but illustrating a veneer sheet having a permissible open defect.
  • an automatic veneer saw unit is generally indicated at 1 and is suitably supported by a carriage 5 above a clipper table 2 having the usual belts 3 for moving the veneer sheets 4- towards the clipper generally indicated at 19.
  • a motor 6 is mounted on the carriage 5 for driving the saw unit 1.
  • the motor 6 is provided with the usual pulley 9 for driving a sprocket 7 by the belts 8 interconnecting the pulleys on the sprocket and pulley member 9.
  • the sprocket member 7 is carried by and rotates on a shaft member 18.
  • Pivotally connected to the shaft 18 is a support member 12 which carries a saw shaft 11.
  • Belts 10 are suitably connected between pulleys on the shaft 11 and pulleys on the sprocket 7 so that the rotative apart.
  • an air cylinder 14 Suitably mounted on a pivot pin 16 on support member12 is an air cylinder 14 connected to a suitable source of air pressure, not shown.
  • the upper end of the cylinder 14 is pivotally connected to the carriage by a pivot pin 15.
  • a first bank of light source 21 is mounted underneath the table 2 on a shaft or rod 20.
  • the light source 21 extends transversely across the path of the veneer sheet 4.
  • the light source 21 comprises a plurality of lights spaced a predetermined distance
  • a bank of photoelectric tubes 23 are mounted on asuitable shaft or rod 22.
  • the photoelectric tubes 23 are spaced a predetermined distance apart.
  • a second bank of light source 25 suitably mounted on a rod or shaft 24 beneath the table 2.
  • the bank of light source'25 extends transversely entirely across the path of the veneer sheets 4.
  • a second bank of photoelectric tubes 27 suitably mounted on a shaft or rod 26.
  • the bank of photoelectric tubes 23 and 27 also extend transversely entirely across the path or" the veneer sheet 4.
  • the photoelectric tubes 23 and 27 are of any conventional design that generate electricity to excite a circuit when a light source is beamed thereon;
  • the first photoelectric bank 23 is designed to actuate the saw member 17 to lower it into a cutting position when a defective portion in the veneer sheet travels underneath or between the source of light 21 and tubes 23. This is accomplished by connecting the photoelectric tubes 23 to a suitable valve mechanism to operate an air source, notshown, which in turn actuates cylinder member 14/
  • the photoelectric tubes 23 are spaced apart a sufficient distance that it requires a beam of light to focus on at least two of the tubes 23 in order to actuate the cylinder member 14 to lower the saw 17.
  • the second bank of photoelectric tubes 27 and light source 25 are suitably connected to the same valve, not 5 shown, to elevate the saw unit when the defective portion in the venmr sheet 4 interrupts the light beam shining between the source 25 and the tubes 27.
  • the electrical circuit for use with the photoelectric tubes 27 and 23 may be of any conventional design and may be connected thereto in a manner well-known in the art.
  • the operator first determines the permissible size of open defects in the veneer sheets 4. Then the photoelectric tubes 23 are set a predetermined distance apart and a predetermined distance above the table 2.
  • the veneer sheets 4 are then placed on the table 2 and moved toward the clipper 19 by the belts 3.
  • an open defect occurs in the veneer sheet 4, such as shown at 28 in FIGURE 3
  • a light beam 30 from the source 21 will extend through the defective opening 28 and focus on at least two photoelectric tubes 23.
  • the current generated in the tubes 23 will excite a valve and allow air pressure to act on the cylinder 14 to lower the saw. Since the saw 17 is located equidistant from the edges of the veneer sheet 4, it will cut the veneer sheet 4 in half for a distance determined by the greatest opening of the defect as it moves along the table 2. It should be noted that the saw 17 will remain in the lowered cutting position until the open defect 28 has passed the saw blade 17.
  • the defective portion of the veneer sheet 4 that has been cut in half moves along the table 2 and is clipped by the clipper 19 and removed for producing stock for cross-banding.
  • a veneer sheet 4' is shown having an open defect 29.
  • the opening 29 is of a permissible size and the light beam 30 will focus on only one photoelectric tube 23. Therefore, the saw 17 will not be lowered to cut the veneer sheet 4' in half since the beam 30 must focus on at least two photoelectric tubes 23 to lower the saw 17.
  • An apparatus for cutting defective portions of veneer sheets comprising: a clipper table adapted to convey veneer sheets to a clipper mechanism; a veneer saw mounted above said clipper table including a saw adapted to be lowered and raised; and means for detecting open defective portions in the veneer sheets and adapted to lower the saw to cut the defective portion of the veneer sheet in half.
  • anyapparatus for cutting defective portions of veneer sheets comprising: a clipper table adapted to convey veneer sheets to a clipper mechanism; a veneer saw mounted above said clipper table including a saw 4 adapted to be lowered and raised; means for detecting open defective portions in the veneer sheets and adapted to lower the saw to cut the defective portion of the veneer sheet in half, and means to raise the saw after the defective portion of said veneer sheet has been cut.
  • An apparatus for cutting defective portions of veneer sheets comprising: a clipper table adapted to convey veneer sheets to a clipper mechanism; a veneer saw mounted above said clipper table including a saw and a means to raise and lower said saw; and means for detecting open defective portions in the veneer sheets and adapted to actuate said saw lowering means to cut the defective portion of the veneer sheet in half.
  • said means for detecting open defective portions in the veneer sheet includes a bank of light source below said clipper table and a bani: of photoelectric tubes above the table.
  • said means for raising said saw includes a bank of light source and a bank of photoelectric tubes.
  • An apparatus for cutting defective portions of veneer sheets comprising: a clipper table adapted to convey veneer sheets to a clipper mechanism; a veneer saw mounted above said clipper table including a saw and means to raise and lower said saw; means for detecting open defective portions in the veneer sheets includin a bank of light source below said clipper table and a bank of photoelectric tubes above said clipper table; and means to raise said saw including another bank of light source and another bank of photoelectric tubes above said table.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Wood Veneers (AREA)

Description

A. s. HAMMOND 3,165,961
APPARATUS FOR AUTOMATICALLY CUTTING DEFECTIVE VENEER SHEETS 2 Sheets-Sheet 1 INVENTOR BERT s. HAMMOND (QM Q W ATTORNEYS Jan. 19, 1965 Filed Nov. 30, 1962 w m m o N\ Q no .u Q\ M. .Q
Jan. 19, 1965 A. s. HAMMOND 3,165,961
APPARATUS FOR AUTOMATICALLY CUTTING DEFECTIVE VENEER SHEETS- Filed Nov. 30, 1962 Sheets-Sheet 2 INVENTOR.
ALBERT s. HAMMOND A TTOANE YS United States Patent 3,165,961 APPARATUS FOR AUTGMATICALLY CUTTTNG DEFECTIVE VENEER SHEETS Albert S. Hammond, North Bend, Wash, assignor to Weyerhaeuser Company, Tacoma, Wash, a corporation of Washington Filed Nov. 30, 1962, Ser. No. 241,223 7 Claims. (til. 83365) This invention relates to apparatus for automatically cutting defective veneer sheets in half to produce crossbanding for plywood. Specifically, this invention relates to apparatus for automatically cutting defective veneer sheets in half by using photoelectric tubes that detect the defective portions in the veneer sheet and automatically actuate a saw to cut the veneer sheet in half.
In the art of peeling veneer sheets for plywood, open defects in portions of the green veneer sheets often render half of an 8-foot sheet useless. These defective veneer sheets are pulled from the green chain and cut in half to produce cross-banding veneer sheets. This is time consuming and requires that the operator examine each piece of veneer sheet and judge the size of open defects. In the past, many efforts have been made to reduce the labor required for this operation. However, all systems used the judgment of an operator to grade the size of open defects.
There are many disadvantages inherent in the above operation. For example, since the veneer sheets move rapidly along the production line, theoperator examining the veneer sheets may overlook many open defects in s the veneer sheets. Moreover, when the operator spots an open defect in the traveling veneer sheet, he must then clip the veneer sheet and remove the clipped veneer sheet from the production line.
It isa principal object of the present invention to provide apparatus for eliminating the errors in visually grading defects in a traveling veneer sheet.
It is another object of this invention to provide apparatus for automatically grading open'defects in veneer sheets and automatically cut the defective portion of the veneer sheet in half.
It is another objectof this invention to provide apparatus for grading defectsin veneer sheets by a photoelectric tube system.
These and other objects will become clear to those skilled in the art When taken in conjunction with the present detailed description and drawings wherein:
FIGURE 1 is a side elevational view, partly in section, of the automatic veneer saw and clipper table embodying the present invention.
FIGURE 2 is a top plan view of the automatic veneer saw and clipper illustrated in FIGURE 1.
FIGURE 3 is a cross-sectional view taken on line 3-3 of FIGURE 1.
FIGURE 4 is a cross-sectional view similar to FIG- URE 3 but illustrating a veneer sheet having a permissible open defect.
Referring to the drawings, an automatic veneer saw unit is generally indicated at 1 and is suitably supported by a carriage 5 above a clipper table 2 having the usual belts 3 for moving the veneer sheets 4- towards the clipper generally indicated at 19.
A motor 6 is mounted on the carriage 5 for driving the saw unit 1. The motor 6 is provided with the usual pulley 9 for driving a sprocket 7 by the belts 8 interconnecting the pulleys on the sprocket and pulley member 9. The sprocket member 7 is carried by and rotates on a shaft member 18. Pivotally connected to the shaft 18 is a support member 12 which carries a saw shaft 11. Belts 10 are suitably connected between pulleys on the shaft 11 and pulleys on the sprocket 7 so that the rotative apart.
amass]. Fatented Jan. 19, 1965 "Ice force of the motor 6 will rotate the sprocket member 7 and also shaft member 11. Rigidly connected to the shaft member 11 is a saw blade 17 which as shown is mounted between two guard members 13.
Suitably mounted on a pivot pin 16 on support member12 is an air cylinder 14 connected to a suitable source of air pressure, not shown. The upper end of the cylinder 14 is pivotally connected to the carriage by a pivot pin 15.
A first bank of light source 21 is mounted underneath the table 2 on a shaft or rod 20. The light source 21 extends transversely across the path of the veneer sheet 4. As shown in FIGURE 3, the light source 21 comprises a plurality of lights spaced a predetermined distance Directly above the light source 21, a bank of photoelectric tubes 23 are mounted on asuitable shaft or rod 22. The photoelectric tubes 23 are spaced a predetermined distance apart.
Spaced downstream of and directly under the saw blade 17 is mounted a second bank of light source 25 suitably mounted on a rod or shaft 24 beneath the table 2. The bank of light source'25 extends transversely entirely across the path of the veneer sheets 4. Directly above the light source 25 and above the table 2 is mounted a second bank of photoelectric tubes 27 suitably mounted on a shaft or rod 26. The bank of photoelectric tubes 23 and 27 also extend transversely entirely across the path or" the veneer sheet 4.
The photoelectric tubes 23 and 27 are of any conventional design that generate electricity to excite a circuit when a light source is beamed thereon;
The first photoelectric bank 23 is designed to actuate the saw member 17 to lower it into a cutting position when a defective portion in the veneer sheet travels underneath or between the source of light 21 and tubes 23. This is accomplished by connecting the photoelectric tubes 23 to a suitable valve mechanism to operate an air source, notshown, which in turn actuates cylinder member 14/ The photoelectric tubes 23 are spaced apart a sufficient distance that it requires a beam of light to focus on at least two of the tubes 23 in order to actuate the cylinder member 14 to lower the saw 17.
The second bank of photoelectric tubes 27 and light source 25 are suitably connected to the same valve, not 5 shown, to elevate the saw unit when the defective portion in the venmr sheet 4 interrupts the light beam shining between the source 25 and the tubes 27.
The electrical circuit for use with the photoelectric tubes 27 and 23 may be of any conventional design and may be connected thereto in a manner well-known in the art.
In operation, the operator first determines the permissible size of open defects in the veneer sheets 4. Then the photoelectric tubes 23 are set a predetermined distance apart and a predetermined distance above the table 2.
The veneer sheets 4 are then placed on the table 2 and moved toward the clipper 19 by the belts 3. When an open defect occurs in the veneer sheet 4, such as shown at 28 in FIGURE 3, a light beam 30 from the source 21 will extend through the defective opening 28 and focus on at least two photoelectric tubes 23. The current generated in the tubes 23 will excite a valve and allow air pressure to act on the cylinder 14 to lower the saw. Since the saw 17 is located equidistant from the edges of the veneer sheet 4, it will cut the veneer sheet 4 in half for a distance determined by the greatest opening of the defect as it moves along the table 2. It should be noted that the saw 17 will remain in the lowered cutting position until the open defect 28 has passed the saw blade 17.
As the open detect 2% moves along the table 2, an-
other light beam will extend therethrough from the light source and focus on the photoelectric tubes 27. The circuit is arranged in such a manner that this expedient will not raise the saw. However, when the training edge of the open defect 28 cuts off the beam of light between the source 25 and photoelectric tubes 27, the air pressure in cylinder 14 is relieved and the saw is raised. In this manner a centerline cut is made on the veneer sheet the length of which will be at least equal to the greatest open path of the defect in the direction of travel of the veneer. Actually, the length of the said centerline cut will be slightly longer than the said open path of the defect since the saw blade 17 is 50' positioned with respect to the saw lowering 23 and saw raising 27 photoelectric tubes that it is slightly ahead of the former and slightly behind the latter.
The defective portion of the veneer sheet 4 that has been cut in half moves along the table 2 and is clipped by the clipper 19 and removed for producing stock for cross-banding.
Referring to FIGURE 4, a veneer sheet 4' is shown having an open defect 29. However, the opening 29 is of a permissible size and the light beam 30 will focus on only one photoelectric tube 23. Therefore, the saw 17 will not be lowered to cut the veneer sheet 4' in half since the beam 30 must focus on at least two photoelectric tubes 23 to lower the saw 17.
In place of the single center cut saw shown in the illustrative modification, several saws may be positioned across the width of the veneer so that when the sensing eyes indicate detects the appropriate saws would drop to produce one piece of cross-banding from the center of the sheet.
While specific details of a preferred embodiment have been set forth above, it will be apparent that many changes and modifications may be made therein without departing from the spirit of the invention. It will therefore be understood that what has been described herein is intended to be illustrative only, and is not intended to limit the scope of the invention.
What is claimed is:
1. An apparatus for cutting defective portions of veneer sheets, comprising: a clipper table adapted to convey veneer sheets to a clipper mechanism; a veneer saw mounted above said clipper table including a saw adapted to be lowered and raised; and means for detecting open defective portions in the veneer sheets and adapted to lower the saw to cut the defective portion of the veneer sheet in half.
2. Anyapparatus for cutting defective portions of veneer sheets, comprising: a clipper table adapted to convey veneer sheets to a clipper mechanism; a veneer saw mounted above said clipper table including a saw 4 adapted to be lowered and raised; means for detecting open defective portions in the veneer sheets and adapted to lower the saw to cut the defective portion of the veneer sheet in half, and means to raise the saw after the defective portion of said veneer sheet has been cut.
3. An apparatus for cutting defective portions of veneer sheets, comprising: a clipper table adapted to convey veneer sheets to a clipper mechanism; a veneer saw mounted above said clipper table including a saw and a means to raise and lower said saw; and means for detecting open defective portions in the veneer sheets and adapted to actuate said saw lowering means to cut the defective portion of the veneer sheet in half.
4. An apparatus for cutting defective portions of veneer sheets as set forth in claim 2 wherein: said means for detecting open defective portions in the veneer sheet includes a bank of light source below said clipper table and a bani: of photoelectric tubes above the table.
5. An apparatus for cutting defective portions of veneer sheets as set forth in claim 2 wherein: said means for raising said saw includes a bank of light source and a bank of photoelectric tubes.
6. An apparatus for cutting defective portions of veneer sheets comprising: a clipper table adapted to convey veneer sheets to a clipper mechanism; a veneer saw mounted above said clipper table including a saw and means to raise and lower said saw; means for detecting open defective portions in the veneer sheets includin a bank of light source below said clipper table and a bank of photoelectric tubes above said clipper table; and means to raise said saw including another bank of light source and another bank of photoelectric tubes above said table.
7. An apparatus for cutting defective portions in veneer sheets as set forth in claim 6. wherein said open defective portion must be of a width to allow a beam of light from said light source to focus on at least two photoelectric tubes to lower said saw.
References Cited in the file of this patent UNITED STATES PATENTS Switzerland June 15, 1957

Claims (1)

1. AN APPARATUS FOR CUTTING DEFECTIVE PORTIONS OF VENEER SHEETS, COMPRISING: A CLIPPER TABLE ADAPTED TO CONVEY VENEER SHEETS TO A CLIPPER MECHANISM; A VENEER SAW MOUNTED ABOVE SAID CLIPPER TABLE INCLUDING A SAW ADAPTED TO BE LOWERED AND RAISED; AND MEANS FOR DETECTING OPEN DEFECTIVE PORTIONS IN THE VENEER SHEETS AND ADAPTED TO LOWER THE SAW TO CUT THE DEFLECTIVE PORTION OF THE VENEER SHEET IN HALF.
US241223A 1962-11-30 1962-11-30 Apparatus for automatically cutting defective veneer sheets Expired - Lifetime US3165961A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US241223A US3165961A (en) 1962-11-30 1962-11-30 Apparatus for automatically cutting defective veneer sheets
US37591364 US3244041A (en) 1962-11-30 1964-06-17 Method of automatically halving and cutting defective veneer sheets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US241223A US3165961A (en) 1962-11-30 1962-11-30 Apparatus for automatically cutting defective veneer sheets

Publications (1)

Publication Number Publication Date
US3165961A true US3165961A (en) 1965-01-19

Family

ID=22909770

Family Applications (1)

Application Number Title Priority Date Filing Date
US241223A Expired - Lifetime US3165961A (en) 1962-11-30 1962-11-30 Apparatus for automatically cutting defective veneer sheets

Country Status (1)

Country Link
US (1) US3165961A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3393322A (en) * 1965-03-23 1968-07-16 Linderman Engineering Company Photosensitive device for protecting the photoresponsive transducer in a pinhole detector
US3412768A (en) * 1964-12-28 1968-11-26 Torwegge Helmut Device for machining the longitudinal edges of plate-shaped workpieces of different widths
US3446256A (en) * 1967-05-01 1969-05-27 Fmc Corp Positioning mechanism
US3552252A (en) * 1968-12-30 1971-01-05 Black Clawson Co Veneer defect detector and clipper control
US3570561A (en) * 1968-07-03 1971-03-16 Meyer & Schwabedissen F Installation for subdividing a flat workpiece
US3760667A (en) * 1969-01-15 1973-09-25 Black Clawson Co Veneer defect detector and clipper control
US3976384A (en) * 1974-01-18 1976-08-24 Plessey Handel Und Investments A.G. Method and apparatus for detecting timber defects
DE2534023A1 (en) * 1975-07-30 1977-02-17 Plessey Handel Investment Ag Automatic detection of knots in wood - is by use of array of reflected light beams from sawn wood surface
EP0500161A3 (en) * 1991-02-12 1993-02-24 Angelo Cremona & Figlio S.P.A. Sheet cutting station for rotary cut wood veneer
EP2476498A1 (en) * 2006-06-20 2012-07-18 Padana AG Automatic clipping line

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US947744A (en) * 1908-10-03 1910-01-25 Philip L Stohr Electric paper-cutter.
US1759344A (en) * 1928-08-29 1930-05-20 Arthur J Davis Sheet-paper cutter
US1965341A (en) * 1934-04-09 1934-07-03 W E Foshee Method of making automobile loading blocks
US2623587A (en) * 1946-08-27 1952-12-30 Hervey Foundation Inc Veneer clipper
US2652864A (en) * 1948-06-14 1953-09-22 Graham Tie Dowel Service Compa Machine for cutting defective sections from lumber
US2708968A (en) * 1953-09-22 1955-05-24 Waldes Kohinoor Inc Method of producing measured lengths of slide fastener chain
CH321211A (en) * 1953-08-29 1957-04-30 Mueller Ag Method and device for cutting strip-shaped cut material, in particular veneer strip
US2942635A (en) * 1959-01-16 1960-06-28 Roy C Horne Method of reconstituting lumber and product thereof
US3044508A (en) * 1959-03-02 1962-07-17 Weyerhaeuser Co Mark sensing lumber defect cutter

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US947744A (en) * 1908-10-03 1910-01-25 Philip L Stohr Electric paper-cutter.
US1759344A (en) * 1928-08-29 1930-05-20 Arthur J Davis Sheet-paper cutter
US1965341A (en) * 1934-04-09 1934-07-03 W E Foshee Method of making automobile loading blocks
US2623587A (en) * 1946-08-27 1952-12-30 Hervey Foundation Inc Veneer clipper
US2652864A (en) * 1948-06-14 1953-09-22 Graham Tie Dowel Service Compa Machine for cutting defective sections from lumber
CH321211A (en) * 1953-08-29 1957-04-30 Mueller Ag Method and device for cutting strip-shaped cut material, in particular veneer strip
US2708968A (en) * 1953-09-22 1955-05-24 Waldes Kohinoor Inc Method of producing measured lengths of slide fastener chain
US2942635A (en) * 1959-01-16 1960-06-28 Roy C Horne Method of reconstituting lumber and product thereof
US3044508A (en) * 1959-03-02 1962-07-17 Weyerhaeuser Co Mark sensing lumber defect cutter

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3412768A (en) * 1964-12-28 1968-11-26 Torwegge Helmut Device for machining the longitudinal edges of plate-shaped workpieces of different widths
US3393322A (en) * 1965-03-23 1968-07-16 Linderman Engineering Company Photosensitive device for protecting the photoresponsive transducer in a pinhole detector
US3446256A (en) * 1967-05-01 1969-05-27 Fmc Corp Positioning mechanism
US3446255A (en) * 1967-05-01 1969-05-27 Fmc Corp Scanner lockout mechanism
US3570561A (en) * 1968-07-03 1971-03-16 Meyer & Schwabedissen F Installation for subdividing a flat workpiece
US3552252A (en) * 1968-12-30 1971-01-05 Black Clawson Co Veneer defect detector and clipper control
US3760667A (en) * 1969-01-15 1973-09-25 Black Clawson Co Veneer defect detector and clipper control
US3976384A (en) * 1974-01-18 1976-08-24 Plessey Handel Und Investments A.G. Method and apparatus for detecting timber defects
DE2534023A1 (en) * 1975-07-30 1977-02-17 Plessey Handel Investment Ag Automatic detection of knots in wood - is by use of array of reflected light beams from sawn wood surface
EP0500161A3 (en) * 1991-02-12 1993-02-24 Angelo Cremona & Figlio S.P.A. Sheet cutting station for rotary cut wood veneer
EP2476498A1 (en) * 2006-06-20 2012-07-18 Padana AG Automatic clipping line
US9050735B2 (en) 2006-06-20 2015-06-09 Danzer Services Schweiz Ag Automatic clipping line

Similar Documents

Publication Publication Date Title
US4468992A (en) Automatic sawing system
US4023605A (en) Method for grading and measuring lumber and a trimming device for performing said method
US3780777A (en) Defecting saw
US1476238A (en) Indicator for edging saws
US4676130A (en) Lumber edger
US3165961A (en) Apparatus for automatically cutting defective veneer sheets
EP0500181B1 (en) Automated cutting station for wood blanks
US4945797A (en) Automated multiple rip saw feeding apparatus
US4468993A (en) Small log bucking system
US2427223A (en) Sheet cutting and delivery means
US4031790A (en) Lumber trimmer
US4960023A (en) Cross-cut sawing of boards by saw blades mounted on transversely adjustable carriers
EP0208079A1 (en) Sawing machine
CA1160321A (en) Method and apparatus for sawing logs into lengths
AU2003201019A1 (en) Cutter trimmer sorter
US4700758A (en) Device for trimming the edges of veneer
US20020000148A1 (en) Device for trimming wane-affected planks
US2652864A (en) Machine for cutting defective sections from lumber
US4093007A (en) Method for root end cutting of lumber and a device for performing said method
US6397713B1 (en) Automated infeed system
US4085638A (en) Apparatus for cutting lumber to variable clear lengths
US4205568A (en) Method and apparatus for optimizing edge cut of boards from cants and the like
USRE25686E (en) Mark sensing lumber defect cutter
JPH071411A (en) A flexible station for cutting veneer from wood logs.
US1673265A (en) Art and apparatus for debarking pulp slabs