GB191509681A - Improvements in or relating to Wood-screws. - Google Patents

Improvements in or relating to Wood-screws.

Info

Publication number
GB191509681A
GB191509681A GB191509681DA GB191509681A GB 191509681 A GB191509681 A GB 191509681A GB 191509681D A GB191509681D A GB 191509681DA GB 191509681 A GB191509681 A GB 191509681A
Authority
GB
United Kingdom
Prior art keywords
head
wood
screws
peacock
punch
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
Alexander Peacock
Arthur Peacock
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
Publication of GB191509681A publication Critical patent/GB191509681A/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
    • F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
    • F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
    • F16B35/06—Specially-shaped heads
    • F16B35/065—Specially-shaped heads with self-countersink-cutting means

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)

Abstract

9681. Peacock, A., and Peacock, A. July 2. Wood-screws.-In a self-countersinking woodscrew, portions a of the head, at each end and on opposite sides of the driving-groove c, are forced downwards so as to project beyond the normal contour of the under surface of the head and form cutting-projections. A punch e, for shaping the head in this way has at its lower end two oppositely inclined surfaces f surronnded by a ferrule g, which forms a socket for the screw head. The surfaces f are separated by a slot h, in which is arranged a plate j adapted to be pressed by a spring k into the groove of the screw head. The punch is then forced down by a hammer &c.
GB191509681D 1915-07-02 1915-07-02 Improvements in or relating to Wood-screws. Expired GB191509681A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191509681T 1915-07-02

Publications (1)

Publication Number Publication Date
GB191509681A true GB191509681A (en) 1916-05-04

Family

ID=32675437

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191509681D Expired GB191509681A (en) 1915-07-02 1915-07-02 Improvements in or relating to Wood-screws.

Country Status (1)

Country Link
GB (1) GB191509681A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112483464A (en) * 2020-10-27 2021-03-12 中国船舶重工集团公司第七0三研究所 Novel circumferential groove type gas turbine compressor blade locking device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112483464A (en) * 2020-10-27 2021-03-12 中国船舶重工集团公司第七0三研究所 Novel circumferential groove type gas turbine compressor blade locking device
CN112483464B (en) * 2020-10-27 2023-03-14 中国船舶重工集团公司第七0三研究所 Circumferential groove type gas turbine compressor blade locking device

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