WO1995021976A1 - Scaffold board and method and device for manufacturing thereof - Google Patents

Scaffold board and method and device for manufacturing thereof Download PDF

Info

Publication number
WO1995021976A1
WO1995021976A1 PCT/EP1995/000527 EP9500527W WO9521976A1 WO 1995021976 A1 WO1995021976 A1 WO 1995021976A1 EP 9500527 W EP9500527 W EP 9500527W WO 9521976 A1 WO9521976 A1 WO 9521976A1
Authority
WO
WIPO (PCT)
Prior art keywords
board
scaffold board
protector
plastic
head end
Prior art date
Application number
PCT/EP1995/000527
Other languages
French (fr)
Other versions
WO1995021976B1 (en
Inventor
Waltherus Joseph Maria Van Erven
Original Assignee
Zodiac Europe S.A.
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 Zodiac Europe S.A. filed Critical Zodiac Europe S.A.
Priority to AU18089/95A priority Critical patent/AU1808995A/en
Publication of WO1995021976A1 publication Critical patent/WO1995021976A1/en
Publication of WO1995021976B1 publication Critical patent/WO1995021976B1/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/15—Scaffolds primarily resting on the ground essentially comprising special means for supporting or forming platforms; Platforms
    • E04G1/151—Platforms made of wood, with or without reinforcements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G5/00—Component parts or accessories for scaffolds
    • E04G5/08—Scaffold boards or planks
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G9/00—Forming or shuttering elements for general use
    • E04G9/02—Forming boards or similar elements
    • E04G9/04—Forming boards or similar elements the form surface being of wood

Definitions

  • the invention relates to a scaffold board, wherein a
  • the protector is arranged on each of its head ends.
  • Such a scaffold board is known.
  • the protector consists therein of a steel hoop which prevents the board from splitting.
  • the hoop may protrude when the scaffold board is manufactured inaccurately. It may then catch on something during work operations. This impedes a smooth progress of operations and may be a further cause of the hoop coming loose. 10
  • the steel hoop has rather sharp edges.
  • the invention has for its object to prevent, such injuries and to make the board more sturdy.
  • a protector of plastic is arranged on each head end of the scaffold board. Not only are hand injuries thereby reduced, because sharp edges are avoided, but in particular the lifespan of the scaffold board is also prolonged because the protector of plastic 20 adheres more firmly to the wood of the board and because penetration of moisture into the wood fibres on the head ends is prevented.
  • the invention also provides a method and a device for manufacturing a scaffold board according to the 25 invention.
  • the scaffold board 1 consists of a wooden board 2 35 which is for instance 20 cm wide and 34 mm thick and has a considerable length, for instance 4 to 6 m.
  • a protector 4 consisting of a layer of plastic with a thickness t for instance in the order of magnitude of 1 cm.
  • liquid plastic is preferably moulded against this head end 3. This takes place preferably in a mould, for instance the device 6 of figure 4. The plastic penetrates into the pores of the wood and adheres extremely well to the head end wood.
  • Each head end 3 of board 2 of figure 1 has bevelled corners. These corners could however also be rounded.
  • the head end 3 has an arcuate form.
  • the protector 4 has roundings 5. Sharp corners on the board 1 are otherwise avoided as much as possible.
  • plastic can be applied a polyurethane plastic, although other plastics can also be used.
  • plastic is injected in the device 6 on each head end 3 of the wooden board 2 by sliding the board 2 into the mould cavity until it comes to a stop against a pin 9 loaded by a pressure spring 8. Thereafter, using a side bounding member 10 by means of hydraulic cylinders 11 and a cover 12 by means of hydraulic cylinders 13, the board is enclosed in the thus closed mould cavity 7, whereafter plastic is injected from nozzle 14 into the remaining part of mould cavity 7 for moulding on of the protector 4.
  • the device 6 After curing and/or reaction of the plastic, for instance polyurethane, the device 6 is opened and the head end 3 taken out of the mould cavity.
  • the other head end 3 of board 2 is provided with a protector 4 in the same way.
  • the mould cavity 7 is of course adapted to the desired shape of the protector 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

In the known scaffold board protectors are arranged on its head ends consisting of steel hoops which prevent the board from splitting. According to the invention a protector (4) of plastic is arranged on each head end (3) of the scaffold board (2). Not only are hand injuries thereby reduced, because sharp edges are avoided, but in particular the lifespan of the scaffold board is also prolonged because the protector of plastic adheres more firmly to the wood of the board and because penetration of moisture into the wood fibres on the head ends is prevented. The invention also provides a method and a device for manufacturing a scaffold board according to the invention.

Description

SCAFFOLD BOARD AND METHOD AND DEVICE FOR MANUFACTURING THEREOF
1 The invention relates to a scaffold board, wherein a
* protector is arranged on each of its head ends. Such a scaffold board is known. The protector consists therein of a steel hoop which prevents the board from splitting.
5 The hoop may protrude when the scaffold board is manufactured inaccurately. It may then catch on something during work operations. This impedes a smooth progress of operations and may be a further cause of the hoop coming loose. 10 The steel hoop has rather sharp edges.
All this can cause hand injuries and/or splitting of the board.
The invention has for its object to prevent, such injuries and to make the board more sturdy. 15 For this purpose a protector of plastic is arranged on each head end of the scaffold board. Not only are hand injuries thereby reduced, because sharp edges are avoided, but in particular the lifespan of the scaffold board is also prolonged because the protector of plastic 20 adheres more firmly to the wood of the board and because penetration of moisture into the wood fibres on the head ends is prevented.
The invention also provides a method and a device for manufacturing a scaffold board according to the 25 invention.
The invention will be elucidated in the description following hereinafter with reference to a drawing. In the drawing: figures 1, 2 and 3 each show a perspective view of a
* 30 fraction of a scaffold board according to the invention; i and figure 4 shows a device for performing the method according to the invention.
The scaffold board 1 consists of a wooden board 2 35 which is for instance 20 cm wide and 34 mm thick and has a considerable length, for instance 4 to 6 m. Formed over the whole width and the whole height of each head end 3 is a protector 4 consisting of a layer of plastic with a thickness t for instance in the order of magnitude of 1 cm. For this purpose liquid plastic is preferably moulded against this head end 3. This takes place preferably in a mould, for instance the device 6 of figure 4. The plastic penetrates into the pores of the wood and adheres extremely well to the head end wood. Each head end 3 of board 2 of figure 1 has bevelled corners. These corners could however also be rounded.
In figure 2 the head end 3 has an arcuate form. In figure 3 the protector 4 has roundings 5. Sharp corners on the board 1 are otherwise avoided as much as possible.
As plastic can be applied a polyurethane plastic, although other plastics can also be used.
According to the method of the invention plastic is injected in the device 6 on each head end 3 of the wooden board 2 by sliding the board 2 into the mould cavity until it comes to a stop against a pin 9 loaded by a pressure spring 8. Thereafter, using a side bounding member 10 by means of hydraulic cylinders 11 and a cover 12 by means of hydraulic cylinders 13, the board is enclosed in the thus closed mould cavity 7, whereafter plastic is injected from nozzle 14 into the remaining part of mould cavity 7 for moulding on of the protector 4.
After curing and/or reaction of the plastic, for instance polyurethane, the device 6 is opened and the head end 3 taken out of the mould cavity. The other head end 3 of board 2 is provided with a protector 4 in the same way.
The mould cavity 7 is of course adapted to the desired shape of the protector 4.
*****

Claims

1. Scaffold board (1) wherein a protector (4) is arranged on at least one of its head ends (3) , characterized in that a protector (4) of plastic is arranged on the head end (3) of a board (2) .
2. Scaffold board (1) as claimed in claim 1, characterized in that the protector (4) consists of a polyurethane.
3. Scaffold board (1) as claimed in claim 1 or 2, characterized in that the head end (3) is bevelled or rounded.
4. Method for manufacturing a scaffold board (1) as claimed in any of the foregoing claims, characterized in that a protector (4) of plastic is moulded onto a head end (3) of a board (2) bounding a mould cavity (7) by injecting this plastic in liquid form into the mould cavity (7) .
5. Device (6) for manufacturing a scaffold board (1) according to the method of claim 4, characterized by a mould cavity (7) for moulding a protector (4) of plastic onto a head end (3) of a board (2) .
*****
PCT/EP1995/000527 1994-02-15 1995-02-10 Scaffold board and method and device for manufacturing thereof WO1995021976A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU18089/95A AU1808995A (en) 1994-02-15 1995-02-10 Scaffold board and method and device for manufacturing thereof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9400230 1994-02-15
NL9400230A NL191999C (en) 1994-02-15 1994-02-15 Method and device for the manufacture of a scaffold plank.

Publications (2)

Publication Number Publication Date
WO1995021976A1 true WO1995021976A1 (en) 1995-08-17
WO1995021976B1 WO1995021976B1 (en) 1995-08-31

Family

ID=19863837

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1995/000527 WO1995021976A1 (en) 1994-02-15 1995-02-10 Scaffold board and method and device for manufacturing thereof

Country Status (3)

Country Link
AU (1) AU1808995A (en)
NL (1) NL191999C (en)
WO (1) WO1995021976A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2384811A (en) * 2002-02-01 2003-08-06 Weyerhaeuser Co Scaffold plank end cap
CN102817470A (en) * 2012-08-06 2012-12-12 中建三局建设工程股份有限公司 Novel scaffold board
US20170159303A1 (en) * 2015-08-08 2017-06-08 Robert Baca Scaffolding panel system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7306974A (en) * 1972-09-25 1974-03-27
GB2101190A (en) * 1981-06-24 1983-01-12 Lamburn Alan S Reinforcing objects such as timber planks
DE9215477U1 (en) * 1992-11-13 1993-01-07 Westag & Getalit Ag, 4840 Rheda-Wiedenbrueck, De
DE9308016U1 (en) * 1993-05-27 1993-07-29 Westag & Getalit Ag, 33378 Rheda-Wiedenbrueck, De

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7306974A (en) * 1972-09-25 1974-03-27
GB2101190A (en) * 1981-06-24 1983-01-12 Lamburn Alan S Reinforcing objects such as timber planks
DE9215477U1 (en) * 1992-11-13 1993-01-07 Westag & Getalit Ag, 4840 Rheda-Wiedenbrueck, De
DE9308016U1 (en) * 1993-05-27 1993-07-29 Westag & Getalit Ag, 33378 Rheda-Wiedenbrueck, De

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2384811A (en) * 2002-02-01 2003-08-06 Weyerhaeuser Co Scaffold plank end cap
FR2835464A1 (en) * 2002-02-01 2003-08-08 Weyerhaeuser Compagny WOODEN BOARD, PROTECTIVE END CAP AND METHOD FOR PROTECTING A BOARD
CN102817470A (en) * 2012-08-06 2012-12-12 中建三局建设工程股份有限公司 Novel scaffold board
US20170159303A1 (en) * 2015-08-08 2017-06-08 Robert Baca Scaffolding panel system

Also Published As

Publication number Publication date
NL191999B (en) 1996-08-01
NL191999C (en) 1996-12-03
NL9400230A (en) 1995-09-01
AU1808995A (en) 1995-08-29

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