GB206761A - An improved percussion tool - Google Patents

An improved percussion tool

Info

Publication number
GB206761A
GB206761A GB368623A GB368623A GB206761A GB 206761 A GB206761 A GB 206761A GB 368623 A GB368623 A GB 368623A GB 368623 A GB368623 A GB 368623A GB 206761 A GB206761 A GB 206761A
Authority
GB
United Kingdom
Prior art keywords
percussion tool
improved percussion
improved
rawlplug
rawlings
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
GB368623A
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.)
Rawlplug Co Ltd
Original Assignee
Rawlplug Co 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 Rawlplug Co Ltd filed Critical Rawlplug Co Ltd
Priority to GB368623A priority Critical patent/GB206761A/en
Publication of GB206761A publication Critical patent/GB206761A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/02—Twist drills
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
    • E21B10/445—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts percussion type, e.g. for masonry
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2251/00—Details of tools for drilling machines
    • B23B2251/20—Number of cutting edges
    • B23B2251/202—Three cutting edges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2251/00—Details of tools for drilling machines
    • B23B2251/24—Overall form of drilling tools
    • B23B2251/241—Cross sections of the diameter of the drill

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Abstract

206,761. Rawlings, J. J., and Rawlplug Co., Ltd. Feb. 7, 1923. Percussive drills. - Holes are drilled in concrete, brick, &c., by a steel percussion tool B formed of a cylindrical rod having a pointed end and constructed with three semicircular or like parallel-sided spiral groves A which serve for the elimination of debris during the drilling of a hole.
GB368623A 1923-02-07 1923-02-07 An improved percussion tool Expired GB206761A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB368623A GB206761A (en) 1923-02-07 1923-02-07 An improved percussion tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB368623A GB206761A (en) 1923-02-07 1923-02-07 An improved percussion tool

Publications (1)

Publication Number Publication Date
GB206761A true GB206761A (en) 1923-11-15

Family

ID=9763015

Family Applications (1)

Application Number Title Priority Date Filing Date
GB368623A Expired GB206761A (en) 1923-02-07 1923-02-07 An improved percussion tool

Country Status (1)

Country Link
GB (1) GB206761A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0066807A1 (en) * 1981-06-04 1982-12-15 ATELIER DE RECTIFICATION ET D'AFFUTAGE A.R.A.F., Société à Responsabilité Limitée dite Drilling tool

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0066807A1 (en) * 1981-06-04 1982-12-15 ATELIER DE RECTIFICATION ET D'AFFUTAGE A.R.A.F., Société à Responsabilité Limitée dite Drilling tool

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