DE112813C - - Google Patents

Info

Publication number
DE112813C
DE112813C DENDAT112813D DE112813DA DE112813C DE 112813 C DE112813 C DE 112813C DE NDAT112813 D DENDAT112813 D DE NDAT112813D DE 112813D A DE112813D A DE 112813DA DE 112813 C DE112813 C DE 112813C
Authority
DE
Germany
Prior art keywords
cutting
machine
drill
drills
drilling
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
DENDAT112813D
Other languages
German (de)
English (en)
Publication of DE112813C publication Critical patent/DE112813C/de
Active legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
    • E21C25/52—Machines incorporating two or more of the slitting means according to groups E21C25/02, E21C25/06, E21C25/16, E21C25/20 and E21C25/22

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Drilling Tools (AREA)
DENDAT112813D Active DE112813C (enrdf_load_html_response)

Publications (1)

Publication Number Publication Date
DE112813C true DE112813C (enrdf_load_html_response)

Family

ID=382447

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT112813D Active DE112813C (enrdf_load_html_response)

Country Status (1)

Country Link
DE (1) DE112813C (enrdf_load_html_response)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3061290A (en) * 1957-11-25 1962-10-30 Joy Mfg Co Mining machine having pivotally mounted cutters

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3061290A (en) * 1957-11-25 1962-10-30 Joy Mfg Co Mining machine having pivotally mounted cutters

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