DE338994C - Rock drill for mild rock - Google Patents

Rock drill for mild rock

Info

Publication number
DE338994C
DE338994C DENDAT338994D DE338994DD DE338994C DE 338994 C DE338994 C DE 338994C DE NDAT338994 D DENDAT338994 D DE NDAT338994D DE 338994D D DE338994D D DE 338994DD DE 338994 C DE338994 C DE 338994C
Authority
DE
Germany
Prior art keywords
rock
mild
drill
tooth
drill axis
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
DENDAT338994D
Other languages
German (de)
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
Publication date
Application granted granted Critical
Publication of DE338994C publication Critical patent/DE338994C/en
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)

Description

Hierzu 1 Blatt Zeichnungen.1 sheet of drawings.

Claims (1)

Patent-Anspruch:Patent claim: Gesteinsbohrer für Mildgestein, dadurch gekennzeichnet, daß die Bohrschneide («) mit einem seitlich der Bohrerachse (g) angeordneten Mittenzahn (5) versehen ist, an dessen vorgestreckter Spitze die stumpf oder scharf gehaltene Brechfläche (c) ebenfalls noch exzentrisch ansetzt und, die Bohrerachse (g) schneidend, nach der Basis des Seitenzahnes (e) verläuft, welcher seinerseits schmäler und länger gehalten ist als der gegenüberliegende Seitenzahn (/").Rock drill for mild rock, characterized in that the cutting edge («) is provided with a central tooth (5) arranged to the side of the drill axis (g) , at the protruding tip of which the blunt or sharp breaking surface (c) also attaches eccentrically and the drill axis (g) cutting, runs to the base of the side tooth (e), which in turn is narrower and longer than the opposite side tooth (/ ").
DENDAT338994D Rock drill for mild rock Expired DE338994C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE338994T

Publications (1)

Publication Number Publication Date
DE338994C true DE338994C (en) 1921-07-11

Family

ID=6223140

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT338994D Expired DE338994C (en) Rock drill for mild rock

Country Status (1)

Country Link
DE (1) DE338994C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1048848B (en) * 1954-07-14 1959-01-22 Hellefors Bruks Aktiebolag Impact drill with hard metal cutting edge with only one cutting edge extending across the drill head
EP0127322A1 (en) * 1983-04-28 1984-12-05 General Electric Company Balanced drill with center cutting action

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1048848B (en) * 1954-07-14 1959-01-22 Hellefors Bruks Aktiebolag Impact drill with hard metal cutting edge with only one cutting edge extending across the drill head
EP0127322A1 (en) * 1983-04-28 1984-12-05 General Electric Company Balanced drill with center cutting action

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