DE174872C - - Google Patents

Info

Publication number
DE174872C
DE174872C DENDAT174872D DE174872DA DE174872C DE 174872 C DE174872 C DE 174872C DE NDAT174872 D DENDAT174872 D DE NDAT174872D DE 174872D A DE174872D A DE 174872DA DE 174872 C DE174872 C DE 174872C
Authority
DE
Germany
Prior art keywords
worm
drilling machine
moved
drilling
column
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
DENDAT174872D
Other languages
German (de)
English (en)
Publication of DE174872C publication Critical patent/DE174872C/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
    • E21C25/64—Slitting machines guided solely by hand and either carried by hand or mounted on supports

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 And Boring (AREA)
DENDAT174872D Active DE174872C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Publications (1)

Publication Number Publication Date
DE174872C true DE174872C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Family

ID=439577

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT174872D Active DE174872C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Country Status (1)

Country Link
DE (1) DE174872C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

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