GB394890A - Improvements in or relating to drills for coal and rock - Google Patents

Improvements in or relating to drills for coal and rock

Info

Publication number
GB394890A
GB394890A GB3694532A GB3694532A GB394890A GB 394890 A GB394890 A GB 394890A GB 3694532 A GB3694532 A GB 3694532A GB 3694532 A GB3694532 A GB 3694532A GB 394890 A GB394890 A GB 394890A
Authority
GB
United Kingdom
Prior art keywords
drills
rock
coal
annular section
relating
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
GB3694532A
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
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 UNION GES fur BERGWERKS und H filed Critical UNION GES fur BERGWERKS und H
Priority to GB3694532A priority Critical patent/GB394890A/en
Publication of GB394890A publication Critical patent/GB394890A/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)
  • Earth Drilling (AREA)

Abstract

394,890. Drills. MOND, A. L., 19, Southampton Buildings, London.-(Union Ges. f³r Bergwerks-und H³ttenbedarf; 7, Kaiserstrasse, Beuthen, Upper Silesia, Germany.) Dec. 30, 1932, No. 36945. [Class 83 (iii).] A drill for coal, rock, and the like of the kind having cutting teeth arranged eccentric to the axis is characterized in that one part c, a<1> of each of the cuttng edges cuts over a common annular section while the other parts b, a<11> each cut over a separate concentric annular section. Sockets.-Connection between bit and shank is by a spring- pressed detent m and a shoulder p to resist the torque.
GB3694532A 1932-12-30 1932-12-30 Improvements in or relating to drills for coal and rock Expired GB394890A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3694532A GB394890A (en) 1932-12-30 1932-12-30 Improvements in or relating to drills for coal and rock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3694532A GB394890A (en) 1932-12-30 1932-12-30 Improvements in or relating to drills for coal and rock

Publications (1)

Publication Number Publication Date
GB394890A true GB394890A (en) 1933-07-06

Family

ID=10392472

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3694532A Expired GB394890A (en) 1932-12-30 1932-12-30 Improvements in or relating to drills for coal and rock

Country Status (1)

Country Link
GB (1) GB394890A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2461305A (en) * 1943-09-22 1949-02-08 Victor Products Ltd Rotary bit for drilling coal and rock
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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2461305A (en) * 1943-09-22 1949-02-08 Victor Products Ltd Rotary bit for drilling coal and rock
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

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