DE88167C - - Google Patents

Info

Publication number
DE88167C
DE88167C DENDAT88167D DE88167DA DE88167C DE 88167 C DE88167 C DE 88167C DE NDAT88167 D DENDAT88167 D DE NDAT88167D DE 88167D A DE88167D A DE 88167DA DE 88167 C DE88167 C DE 88167C
Authority
DE
Germany
Prior art keywords
screw
drill
around
lever
hand
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.)
Active
Application number
DENDAT88167D
Other languages
German (de)
English (en)
Publication of DE88167C publication Critical patent/DE88167C/de
Active 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/02—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting
    • E21B7/025—Rock drills, i.e. jumbo drills

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)
  • Drilling And Boring (AREA)
DENDAT88167D Active DE88167C (enrdf_load_stackoverflow)

Publications (1)

Publication Number Publication Date
DE88167C true DE88167C (enrdf_load_stackoverflow)

Family

ID=360075

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT88167D Active DE88167C (enrdf_load_stackoverflow)

Country Status (1)

Country Link
DE (1) DE88167C (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2581667A (en) * 1946-09-04 1952-01-08 Joy Mfg Co Mining apparatus
DE908603C (de) * 1949-07-03 1954-04-08 Demag Ag Vorrichtung zum Sohlbohren mittels eines Schlagbohrhammers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2581667A (en) * 1946-09-04 1952-01-08 Joy Mfg Co Mining apparatus
DE908603C (de) * 1949-07-03 1954-04-08 Demag Ag Vorrichtung zum Sohlbohren mittels eines Schlagbohrhammers

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