GB670538A - Improvements in power operated twist drills - Google Patents

Improvements in power operated twist drills

Info

Publication number
GB670538A
GB670538A GB2128549A GB2128549A GB670538A GB 670538 A GB670538 A GB 670538A GB 2128549 A GB2128549 A GB 2128549A GB 2128549 A GB2128549 A GB 2128549A GB 670538 A GB670538 A GB 670538A
Authority
GB
United Kingdom
Prior art keywords
power operated
twist drills
operated twist
drills
power
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
GB2128549A
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.)
JAMES DAVID EMMS
Atlas Copco AB
Original Assignee
JAMES DAVID EMMS
Atlas Diesel AB
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 JAMES DAVID EMMS, Atlas Diesel AB filed Critical JAMES DAVID EMMS
Priority to GB2128549A priority Critical patent/GB670538A/en
Publication of GB670538A publication Critical patent/GB670538A/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
    • E21B6/00—Drives for drilling with combined rotary and percussive action

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
GB2128549A 1949-08-16 1949-08-16 Improvements in power operated twist drills Expired GB670538A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2128549A GB670538A (en) 1949-08-16 1949-08-16 Improvements in power operated twist drills

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2128549A GB670538A (en) 1949-08-16 1949-08-16 Improvements in power operated twist drills

Publications (1)

Publication Number Publication Date
GB670538A true GB670538A (en) 1952-04-23

Family

ID=10160310

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2128549A Expired GB670538A (en) 1949-08-16 1949-08-16 Improvements in power operated twist drills

Country Status (1)

Country Link
GB (1) GB670538A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2964691A1 (en) * 2010-09-13 2012-03-16 Montabert Roger HYDRAULIC ROTOPERCUTANT APPARATUS FOR PERFORATING MINE HOLES

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2964691A1 (en) * 2010-09-13 2012-03-16 Montabert Roger HYDRAULIC ROTOPERCUTANT APPARATUS FOR PERFORATING MINE HOLES
CN102400643A (en) * 2010-09-13 2012-04-04 蒙塔博特公司 Hydraulic Rotary Punching Device For Perforation
WO2012089949A1 (en) 2010-09-13 2012-07-05 Montabert Hydraulic rotary percussion apparatus for boring mine holes
US9194182B2 (en) 2010-09-13 2015-11-24 Montabert Hydraulic rotary percussive device intended to drill boreholes
CN102400643B (en) * 2010-09-13 2015-11-25 蒙塔博特公司 For the hydraulic rotating impact device of holing
AU2011351026B2 (en) * 2010-09-13 2016-05-12 Montabert Hydraulic rotary percussion apparatus for boring mine holes

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