CH289782A - Device for grinding drills, in particular twist drills. - Google Patents

Device for grinding drills, in particular twist drills.

Info

Publication number
CH289782A
CH289782A CH289782DA CH289782A CH 289782 A CH289782 A CH 289782A CH 289782D A CH289782D A CH 289782DA CH 289782 A CH289782 A CH 289782A
Authority
CH
Switzerland
Prior art keywords
drills
grinding
particular twist
twist drills
twist
Prior art date
Application number
Other languages
German (de)
Inventor
Henry Bergstroem Roar
Original Assignee
Henry Bergstroem Roar
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 Henry Bergstroem Roar filed Critical Henry Bergstroem Roar
Publication of CH289782A publication Critical patent/CH289782A/en

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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Interface Circuits In Exchanges (AREA)
CH289782D 1927-04-30 1951-01-22 Device for grinding drills, in particular twist drills. CH289782A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE289782X 1927-04-30

Publications (1)

Publication Number Publication Date
CH289782A true CH289782A (en) 1953-03-31

Family

ID=20307204

Family Applications (1)

Application Number Title Priority Date Filing Date
CH289782D CH289782A (en) 1927-04-30 1951-01-22 Device for grinding drills, in particular twist drills.

Country Status (4)

Country Link
CH (1) CH289782A (en)
DE (1) DE568140C (en)
FR (1) FR653775A (en)
GB (2) GB289783A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1107114B (en) * 1958-01-24 1961-05-18 Cawi & Co G M B H Machine for grinding the cutting edges of a drill, countersink, step drill or the like.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1107114B (en) * 1958-01-24 1961-05-18 Cawi & Co G M B H Machine for grinding the cutting edges of a drill, countersink, step drill or the like.

Also Published As

Publication number Publication date
GB289783A (en) 1929-07-18
FR653775A (en) 1929-03-27
DE568140C (en) 1933-01-14
GB289782A (en) 1929-07-18

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