GB191412764A - Improvements in Screws. - Google Patents

Improvements in Screws.

Info

Publication number
GB191412764A
GB191412764A GB191412764DA GB191412764A GB 191412764 A GB191412764 A GB 191412764A GB 191412764D A GB191412764D A GB 191412764DA GB 191412764 A GB191412764 A GB 191412764A
Authority
GB
United Kingdom
Prior art keywords
face
screws
groove
wood
foreman
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
Inventor
Ernest Jay Foreman
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of GB191412764A publication Critical patent/GB191412764A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/001—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed
    • F16B25/0015—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed the material being a soft organic material, e.g. wood or plastic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
    • F16B25/0042—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw
    • F16B25/0052—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw the ridge having indentations, notches or the like in order to improve the cutting behaviour

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Wood Science & Technology (AREA)
  • Furniture Connections (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

12,764. Foreman, E. J. May 27, 1913. [Convention date]. Wood screws.-The threaded portion of the shank is formed with one or more longitudinal grooves 5, each having one radial face 6, and the other face 7 sloped off spirally. The groove offers no resistance to the insertion of the screw, but resists its withdrawal, the face 6 engaging the wood fibres that have entered the groove.
GB191412764D 1913-05-27 1914-05-23 Improvements in Screws. Expired GB191412764A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US191412764XA 1913-05-27 1913-05-27

Publications (1)

Publication Number Publication Date
GB191412764A true GB191412764A (en) 1914-11-19

Family

ID=32597580

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191412764D Expired GB191412764A (en) 1913-05-27 1914-05-23 Improvements in Screws.

Country Status (1)

Country Link
GB (1) GB191412764A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2256938A1 (en) * 1972-11-21 1974-05-30 Upat Max Langensiepen Kg DOWELS FOR FIXING IN PARTICULAR IN PLASTER WALLS OD. DGL

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2256938A1 (en) * 1972-11-21 1974-05-30 Upat Max Langensiepen Kg DOWELS FOR FIXING IN PARTICULAR IN PLASTER WALLS OD. DGL

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