FR507949A - Improvements to drilling and countersinking drills - Google Patents

Improvements to drilling and countersinking drills

Info

Publication number
FR507949A
FR507949A FR507949A FR507949DA FR507949A FR 507949 A FR507949 A FR 507949A FR 507949 A FR507949 A FR 507949A FR 507949D A FR507949D A FR 507949DA FR 507949 A FR507949 A FR 507949A
Authority
FR
France
Prior art keywords
countersinking
drills
drilling
countersinking drills
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
FR507949A
Other languages
French (fr)
Inventor
George Ormerod
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 FR507949A publication Critical patent/FR507949A/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
    • B23B51/10—Bits for countersinking
    • B23B51/108—Bits for countersinking having a centering drill

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
FR507949A 1919-12-29 1919-12-29 Improvements to drilling and countersinking drills Expired FR507949A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR507949T 1919-12-29

Publications (1)

Publication Number Publication Date
FR507949A true FR507949A (en) 1920-09-27

Family

ID=8910074

Family Applications (1)

Application Number Title Priority Date Filing Date
FR507949A Expired FR507949A (en) 1919-12-29 1919-12-29 Improvements to drilling and countersinking drills

Country Status (1)

Country Link
FR (1) FR507949A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0872297A1 (en) * 1997-03-18 1998-10-21 HILTI Aktiengesellschaft Combination drilling tool

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0872297A1 (en) * 1997-03-18 1998-10-21 HILTI Aktiengesellschaft Combination drilling tool
US6073710A (en) * 1997-03-18 2000-06-13 Hilti Aktiengesellschaft Combination drilling member

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