DE600676C - Coal and rock drill bits with two cutting edges at an unequal distance from the drill axis - Google Patents

Coal and rock drill bits with two cutting edges at an unequal distance from the drill axis

Info

Publication number
DE600676C
DE600676C DEU11391D DEU0011391D DE600676C DE 600676 C DE600676 C DE 600676C DE U11391 D DEU11391 D DE U11391D DE U0011391 D DEU0011391 D DE U0011391D DE 600676 C DE600676 C DE 600676C
Authority
DE
Germany
Prior art keywords
cutting edges
coal
drill
unequal distance
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
DEU11391D
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.)
UNION GES fur BERGWERKS und H
Original Assignee
UNION GES fur BERGWERKS und H
Publication date
Priority to DEU11391D priority Critical patent/DE600676C/en
Application granted granted Critical
Publication of DE600676C publication Critical patent/DE600676C/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
    • E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts

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)
  • Drilling Tools (AREA)
  • Earth Drilling (AREA)

Description

M. GEbhüclct in bEfc ftEicitsbiitiCKEitfiiM. GEbhüclct in befc ftEicitsbiitiCKEitfii

Claims (1)

Patentanspruch:Claim: Kohle- und Gesteinsbohrer mit zwei in ungleichem Abstand von der Bohrerachse angeordneten Schneiden, dadurch gekennzeichnet, daß die Spitzen der Schneiden gleichen Abstand von der Bohrerachse haben.Coal and rock drill bits with two at an unequal distance from the drill axis arranged cutting edges, characterized in that the tips of the cutting edges are at the same distance from the drill axis to have. Hierzu 1 Blatt Zeichnungen1 sheet of drawings
DEU11391D Coal and rock drill bits with two cutting edges at an unequal distance from the drill axis Expired DE600676C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEU11391D DE600676C (en) Coal and rock drill bits with two cutting edges at an unequal distance from the drill axis

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEU11391D DE600676C (en) Coal and rock drill bits with two cutting edges at an unequal distance from the drill axis

Publications (1)

Publication Number Publication Date
DE600676C true DE600676C (en) 1934-07-28

Family

ID=7567621

Family Applications (1)

Application Number Title Priority Date Filing Date
DEU11391D Expired DE600676C (en) Coal and rock drill bits with two cutting edges at an unequal distance from the drill axis

Country Status (1)

Country Link
DE (1) DE600676C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2614814A (en) * 1948-12-23 1952-10-21 Joy Mfg Co Coal drill bit
US2639122A (en) * 1949-11-01 1953-05-19 Gerald A Petersen Pilot bit for earth augers
DE937101C (en) * 1949-03-11 1955-12-29 Gerhard Kuehne Rock drill for rotary drilling
DE1053446B (en) * 1954-02-15 1959-03-26 Bertold Kurtz Dipl Ing Double-bladed rotary drill bit equipped with hard metal plate for drilling minerals or the like.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2614814A (en) * 1948-12-23 1952-10-21 Joy Mfg Co Coal drill bit
DE937101C (en) * 1949-03-11 1955-12-29 Gerhard Kuehne Rock drill for rotary drilling
US2639122A (en) * 1949-11-01 1953-05-19 Gerald A Petersen Pilot bit for earth augers
DE1053446B (en) * 1954-02-15 1959-03-26 Bertold Kurtz Dipl Ing Double-bladed rotary drill bit equipped with hard metal plate for drilling minerals or the like.

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