GB1087141A - Preparation of wood for bending - Google Patents

Preparation of wood for bending

Info

Publication number
GB1087141A
GB1087141A GB3928063A GB3928063A GB1087141A GB 1087141 A GB1087141 A GB 1087141A GB 3928063 A GB3928063 A GB 3928063A GB 3928063 A GB3928063 A GB 3928063A GB 1087141 A GB1087141 A GB 1087141A
Authority
GB
United Kingdom
Prior art keywords
billet
compression
wood
compressed
spring
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
GB3928063A
Inventor
Norman Turner
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.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
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 National Research Development Corp UK filed Critical National Research Development Corp UK
Priority to GB3928063A priority Critical patent/GB1087141A/en
Publication of GB1087141A publication Critical patent/GB1087141A/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
    • B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
    • B27M1/00—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching
    • B27M1/02—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching by compressing

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Abstract

1,087,141. Woodworking. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Oct. 2, 1964 [Oct. 4, 1963], No. 39280/63. Heading B5L. A method for modifying the mechanical properties of wood in the preparation of a billet of wood, or portion thereof, for bending comprises a combination of a hot softening treatment and a compression longitudinally along the grain while supported peripherally by a wall of which every element remains substantially at rest in relation to the adjacent wood surface throughout the compression. The billet 11, Fig. 1, after subjection to heat and moisture is placed inside the coiled spring 12 of a jig, the spring being supported on a base 15 having uprights 16 which are threaded at their upper ends and carry an upper plate. The free length of the spring is the same or a little greater than that of the billet and both are compressed between a ram 13 and platen. The billet may be released as soonas compression is completed or maintained compressed for a predetermined time by tightening nuts 19 against the upper plate 18. In an alternative jig more suitable for billets having crosssections which are other than circular, the billet 21, Fig. 2, is disposed in apertures having a shape corresponding to the cross-section of the billet in a plurality of plates 20 which are resiliently urged apart by springs 30 and guided on columns 26 extending from a base plate 25. During longitudinal compression of the billet, the plates remain at rest in relation to the adjacent surface of the billet, the springs being compressed. The billet may be subjected to more than one compression and immediate release and flexibility may be increased by resteaming the billet while under compression. The flexibility of veneers, plywood and laminated wood may be increased by compressing the logs in jigs as described before converting to veneer. A tapered and turned back foot for a chair may be produced by softening by steaming the middle length of a billet, compressing the middle length of the billet which is then immediately released, drying to a moisture content of 15%, machining to profile, and bending between male and female jigs.
GB3928063A 1963-10-04 1963-10-04 Preparation of wood for bending Expired GB1087141A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3928063A GB1087141A (en) 1963-10-04 1963-10-04 Preparation of wood for bending

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3928063A GB1087141A (en) 1963-10-04 1963-10-04 Preparation of wood for bending

Publications (1)

Publication Number Publication Date
GB1087141A true GB1087141A (en) 1967-10-11

Family

ID=10408693

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3928063A Expired GB1087141A (en) 1963-10-04 1963-10-04 Preparation of wood for bending

Country Status (1)

Country Link
GB (1) GB1087141A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113199583A (en) * 2021-05-28 2021-08-03 绍兴主流家俱有限公司 Wood-imitated waste wood processing and forming device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113199583A (en) * 2021-05-28 2021-08-03 绍兴主流家俱有限公司 Wood-imitated waste wood processing and forming device

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