GB190112488A - An Improvement in Wood Screws. - Google Patents

An Improvement in Wood Screws.

Info

Publication number
GB190112488A
GB190112488A GB190112488DA GB190112488A GB 190112488 A GB190112488 A GB 190112488A GB 190112488D A GB190112488D A GB 190112488DA GB 190112488 A GB190112488 A GB 190112488A
Authority
GB
United Kingdom
Prior art keywords
improvement
wood screws
wood
screws
parts
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
George Isaac Randall
Pryce Owen Valentine
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 GB190112488A publication Critical patent/GB190112488A/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
    • F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
    • F16B23/0076—Specially shaped nuts or heads of bolts or screws for rotations by a tool causing slipping of the tool in loosening rotation, i.e. disabling unscrewing unless another tool is used
    • 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
    • F16B25/10—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws
    • F16B25/106—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws by means of a self-piercing screw-point, i.e. without removing material

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Wood Science & Technology (AREA)
  • Golf Clubs (AREA)
  • Connection Of Plates (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

12,488. Randall, G. I., and Valentine, P. O. June 29. Wood - screws. - The slot a has bevelled parts at b, so that the screw can be inserted, but not removed, as the screwdriver slips on the parts b.
GB190112488D 1901-06-29 1901-06-29 An Improvement in Wood Screws. Expired GB190112488A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB190112488T 1901-06-29

Publications (1)

Publication Number Publication Date
GB190112488A true GB190112488A (en) 1902-05-29

Family

ID=32619879

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190112488D Expired GB190112488A (en) 1901-06-29 1901-06-29 An Improvement in Wood Screws.

Country Status (1)

Country Link
GB (1) GB190112488A (en)

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