GB251686A - Improvements in hammer rock drills - Google Patents

Improvements in hammer rock drills

Info

Publication number
GB251686A
GB251686A GB3055/25A GB305525A GB251686A GB 251686 A GB251686 A GB 251686A GB 3055/25 A GB3055/25 A GB 3055/25A GB 305525 A GB305525 A GB 305525A GB 251686 A GB251686 A GB 251686A
Authority
GB
United Kingdom
Prior art keywords
rock drills
stem
hammer rock
hammer
drills
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
GB3055/25A
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
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 Individual filed Critical Individual
Priority to GB3055/25A priority Critical patent/GB251686A/en
Publication of GB251686A publication Critical patent/GB251686A/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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/01—Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes

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

251,686. Potter, H. S. Feb. 3, 1925. Rock drills.-The hollow drill steel of a hammer rock drill is made of two separately manufactured parts 5, 7 joined together by electric butt welding over a shallow conical contact surface 23. The stem 5 terminates in a shoulder 6. The bore of the shank 7 is larger than that of the stem 5.
GB3055/25A 1925-02-03 1925-02-03 Improvements in hammer rock drills Expired GB251686A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3055/25A GB251686A (en) 1925-02-03 1925-02-03 Improvements in hammer rock drills

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3055/25A GB251686A (en) 1925-02-03 1925-02-03 Improvements in hammer rock drills

Publications (1)

Publication Number Publication Date
GB251686A true GB251686A (en) 1926-05-03

Family

ID=9751122

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3055/25A Expired GB251686A (en) 1925-02-03 1925-02-03 Improvements in hammer rock drills

Country Status (1)

Country Link
GB (1) GB251686A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1092859B (en) * 1957-12-14 1960-11-17 Ingbuero Dipl Ing Friedrich He Rotary hammer with central water flush
US4059279A (en) * 1975-07-04 1977-11-22 Roger Montabert Hollow percussion drill rod with seal for cleaning fluid inlet tube

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1092859B (en) * 1957-12-14 1960-11-17 Ingbuero Dipl Ing Friedrich He Rotary hammer with central water flush
US4059279A (en) * 1975-07-04 1977-11-22 Roger Montabert Hollow percussion drill rod with seal for cleaning fluid inlet tube

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