DE698407C - - Google Patents

Info

Publication number
DE698407C
DE698407C DE1939B0186193 DEB0186193D DE698407C DE 698407 C DE698407 C DE 698407C DE 1939B0186193 DE1939B0186193 DE 1939B0186193 DE B0186193 D DEB0186193 D DE B0186193D DE 698407 C DE698407 C DE 698407C
Authority
DE
Germany
Prior art keywords
chisel
drilling
drill bit
new
tip
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
DE1939B0186193
Other languages
German (de)
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.)
Bergbau A G
Original Assignee
Bergbau A G
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 Bergbau A G filed Critical Bergbau A G
Priority to DE1939B0186193 priority Critical patent/DE698407C/de
Application granted granted Critical
Publication of DE698407C publication Critical patent/DE698407C/de
Expired legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
DE1939B0186193 1939-02-08 1939-02-08 Expired DE698407C (OSRAM)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1939B0186193 DE698407C (OSRAM) 1939-02-08 1939-02-08

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1939B0186193 DE698407C (OSRAM) 1939-02-08 1939-02-08

Publications (1)

Publication Number Publication Date
DE698407C true DE698407C (OSRAM) 1940-11-08

Family

ID=7010188

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1939B0186193 Expired DE698407C (OSRAM) 1939-02-08 1939-02-08

Country Status (1)

Country Link
DE (1) DE698407C (OSRAM)

Similar Documents

Publication Publication Date Title
DE524677C (de) Bohrer mit auswechselbaren Schneidmessern fuer Metallbearbeitung
DE698407C (OSRAM)
DE566538C (de) Zahnaerztliches Werkzeug zum Bohren und Fraesen
DE672237C (de) Gesteinsschlagbohrer
CH646094A5 (en) Drilling tool, in particular rock drill
DE1266249B (de) Schlagwerkzeug zum Bohren und Brechen von Beton
DE472053C (de) Erweiterungsbohrer fuer Tiefbohrloecher
DE2717717A1 (de) Gesteinsbohrkrone
DE812906C (de) Bohrkopf, insbesondere zum Bohren von Kohle
DE583046C (de) Gesteinsbohrer
DE848938C (de) Mit Hartmetall bestueckter Drehbohrer
DE937101C (de) Gesteinsbohrer fuer drehendes Bohren
DE612147C (de) Gesteinsbohrer
DE1296107B (de) Bohrkopf fuer Bergwerksgewinnungsmaschinen
DE865874C (de) Gesteinschlagbohrer mit hartmetallbestueckter Meisselschneide
DE391923C (de) Brechschlangenbohrer
DE941182C (de) Schlagbohrkrone fuer Gesteinsbohrer
DE397521C (de) Stossbohrkrone
DE382788C (de) Zweifluegelige Drehbohrschneide
DE382789C (de) Zweifluegelige Drehbohrschneide
DE807271C (de) Drehbohrer
DE836633C (de) Schlagbohrer
DE403486C (de) Stufenfoermig abgesetzter Meissel zur Herstellung von Loechern in Gestein
DE945381C (de) Geraet zum Herstellen von Loechern, Schlitzen od. dgl. in Kohle oder anderen Mineralien
DE394310C (de) Zweifluegeliger Gesteindrehbohrer oder zweifluegelige Einsatzschneide