FR490473A - Improvements in tools for making circular openings in workpieces - Google Patents

Improvements in tools for making circular openings in workpieces

Info

Publication number
FR490473A
FR490473A FR490473DA FR490473A FR 490473 A FR490473 A FR 490473A FR 490473D A FR490473D A FR 490473DA FR 490473 A FR490473 A FR 490473A
Authority
FR
France
Prior art keywords
workpieces
tools
circular openings
making circular
making
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
Other languages
French (fr)
Inventor
Christopher Bach Jeune
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 FR490473A publication Critical patent/FR490473A/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
    • B23B51/04—Drills for trepanning
    • B23B51/05—Drills for trepanning for cutting discs from sheet

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
FR490473D 1918-06-13 1918-06-13 Improvements in tools for making circular openings in workpieces Expired FR490473A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR490473T 1918-06-13

Publications (1)

Publication Number Publication Date
FR490473A true FR490473A (en) 1919-04-24

Family

ID=1526598

Family Applications (1)

Application Number Title Priority Date Filing Date
FR490473D Expired FR490473A (en) 1918-06-13 1918-06-13 Improvements in tools for making circular openings in workpieces

Country Status (1)

Country Link
FR (1) FR490473A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170274550A1 (en) * 2016-03-22 2017-09-28 Jonathan Potter, JR. Circle Cutting System

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170274550A1 (en) * 2016-03-22 2017-09-28 Jonathan Potter, JR. Circle Cutting System

Similar Documents

Publication Publication Date Title
FR512861A (en) Improvements in foundry mixers
FR490473A (en) Improvements in tools for making circular openings in workpieces
FR495498A (en) Improvements in the construction of tool holders
FR548284A (en) Tool for turning metals
FR498491A (en) Tool holders and tools improvements
FR488547A (en) Improvements in machines for straightening construction parts
FR518146A (en) Grinding machine for sharpening lathes and planers tools
FR492757A (en) Improvements in impact tools
FR498884A (en) Improvements in scoring tools
FR502732A (en) Tool holder for any machine tool
FR527457A (en) vices and similar tools for clamping the workpiece
FR494122A (en) Tool turret for milling machines
FR491912A (en) Parallel vice with table for precision work
FR548588A (en) Diamond Tool Holder
FR541193A (en) Support for workpieces
CH76119A (en) Machine for forging circular parts
FR534027A (en) Clamping tool
FR493943A (en) Metal machine tool
FR494936A (en) Improvements to metal cutting tools
FR489095A (en) Metal casting machine
CH81004A (en) Steel holder
FR489038A (en) Composition for washing machined mechanical parts
FR503559A (en) Spindle for braiding machine
FR494096A (en) Special workshop for cleaning workpieces
CH78305A (en) Turning and planing steel holder