FR904146A - Appareil à affûter les forets de perforatrices - Google Patents

Appareil à affûter les forets de perforatrices

Info

Publication number
FR904146A
FR904146A FR904146DA FR904146A FR 904146 A FR904146 A FR 904146A FR 904146D A FR904146D A FR 904146DA FR 904146 A FR904146 A FR 904146A
Authority
FR
France
Prior art keywords
sharpening device
drills
perforating
perforating drills
sharpening
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
English (en)
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.)
Gebrueder Boehler and Co AG
Original Assignee
Gebrueder Boehler and Co AG
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 Gebrueder Boehler and Co AG filed Critical Gebrueder Boehler and Co AG
Application granted granted Critical
Publication of FR904146A publication Critical patent/FR904146A/fr
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/24—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of drills
    • B24B3/33—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of drills of drills for stone

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
FR904146D 1941-04-05 1944-05-09 Appareil à affûter les forets de perforatrices Expired FR904146A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE904146X 1941-04-05

Publications (1)

Publication Number Publication Date
FR904146A true FR904146A (fr) 1945-10-26

Family

ID=6861712

Family Applications (1)

Application Number Title Priority Date Filing Date
FR904146D Expired FR904146A (fr) 1941-04-05 1944-05-09 Appareil à affûter les forets de perforatrices

Country Status (1)

Country Link
FR (1) FR904146A (fr)

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