GB874966A - An improved method and means for bending hardboard or other material which will takea set - Google Patents

An improved method and means for bending hardboard or other material which will takea set

Info

Publication number
GB874966A
GB874966A GB2650158A GB2650158A GB874966A GB 874966 A GB874966 A GB 874966A GB 2650158 A GB2650158 A GB 2650158A GB 2650158 A GB2650158 A GB 2650158A GB 874966 A GB874966 A GB 874966A
Authority
GB
United Kingdom
Prior art keywords
former
sheet
band
jacks
bending
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
Application number
GB2650158A
Inventor
Chaim Samuel Schreiber
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.)
SCHREIBER WOOD IND Ltd
Original Assignee
SCHREIBER WOOD IND Ltd
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 SCHREIBER WOOD IND Ltd filed Critical SCHREIBER WOOD IND Ltd
Priority to GB2650158A priority Critical patent/GB874966A/en
Publication of GB874966A publication Critical patent/GB874966A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
    • B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
    • B27D1/08—Manufacture of shaped articles; Presses specially designed therefor
    • B27D1/083—Presses specially designed for making the manufacture of shaped plywood articles

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

874,966. Bending sheet materials. SCHREIBER WOOD INDUSTRIES Ltd. Aug. 18, 1959 [Aug. 18, 1958], No. 26501/58. Addition to 794,142. Class 100(2) A method of bending and setting a sheet 29, e.g. of hardboard, to form a hollow body such as the carcase of a wireless cabinet comprises the steps of placing the sheet together with a flexible band 25, e.g. of steel, between an inner former 19 and a multi-part outer former having an intermediate part 20 and two side parts 21 L, 21R, tightening the band 25 around the inner former 19, squeezing the band and sheet between the inner and outer formers, and applying heat to the bent sheet to set it. The former 19 is fixedly supported by a strut 18 from a roof beam 12. The former parts 20, 21L, 21R are carried by hydraulic or pneumatic jacks 14, 15L, 15R respectively. The two ends of the flexible band 25 are gripped in clamps 24L, 24R carried by jacks 17L, 17R, while rollers 23L, 23R which bear against the band 25 are carried by jacks 16L, 16R. Before insertion of a sheet 29, which may be previously damped, in the machine the jacks 14, 15, 16 are fully retracted and the jacks 17 are lowered, Fig. 3. Subsequently the following operations are successively performed: (a) The jacks 17 are raised whereby part of the sheet 29 is pressed by the band 25 into close contact with the lower side of the former 19. (b) The former part 20 is raised by the jack 14 to press against the underside of the sheet 29 and band 25. (c) The former parts 21L, 21 R are moved inwards to press the sides of the sheet against the sides of the former 19. (d) The rollers 23L, 23R are moved inwards to their Fig. 1 position. The sheet 29 is heated to make it set in the shape shown. Heat may be applied by means of an electric heating element 31 in the former 19, the band 25 also being used as a heating element. Alternatively a high frequency current may be passed between the element 31 and the band 25. In a modification the former 19 is movable and the former part 20 is fixed. The formers may be so shaped as to produce curved instead of flat sides on the finished article.
GB2650158A 1958-08-18 1958-08-18 An improved method and means for bending hardboard or other material which will takea set Expired GB874966A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2650158A GB874966A (en) 1958-08-18 1958-08-18 An improved method and means for bending hardboard or other material which will takea set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2650158A GB874966A (en) 1958-08-18 1958-08-18 An improved method and means for bending hardboard or other material which will takea set

Publications (1)

Publication Number Publication Date
GB874966A true GB874966A (en) 1961-08-16

Family

ID=10244652

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2650158A Expired GB874966A (en) 1958-08-18 1958-08-18 An improved method and means for bending hardboard or other material which will takea set

Country Status (1)

Country Link
GB (1) GB874966A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014117744A1 (en) * 2013-02-01 2014-08-07 江苏东浦管桩有限公司 Easy-to-use pile tip maker
EP2832508B1 (en) * 2013-07-29 2018-10-24 Faurecia Innenraum Systeme GmbH Method for forming a trim element having a layer of ligneous material with a three-dimensional shape

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014117744A1 (en) * 2013-02-01 2014-08-07 江苏东浦管桩有限公司 Easy-to-use pile tip maker
EP2832508B1 (en) * 2013-07-29 2018-10-24 Faurecia Innenraum Systeme GmbH Method for forming a trim element having a layer of ligneous material with a three-dimensional shape

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