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DE295199C - - Google Patents

Info

Publication number
DE295199C
DE295199C DENDAT295199D DE295199DA DE295199C DE 295199 C DE295199 C DE 295199C DE NDAT295199 D DENDAT295199 D DE NDAT295199D DE 295199D A DE295199D A DE 295199DA DE 295199 C DE295199 C DE 295199C
Authority
DE
Germany
Prior art keywords
mountains
mild
floating
walls
attached
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
DENDAT295199D
Other languages
German (de)
Publication of DE295199C publication Critical patent/DE295199C/de
Active legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D1/00—Sinking shafts
    • E21D1/03—Sinking shafts mechanically, e.g. by loading shovels or loading buckets, scraping devices, conveying screws
    • E21D1/06—Sinking shafts mechanically, e.g. by loading shovels or loading buckets, scraping devices, conveying screws with shaft-boring cutters

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)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Description

Hierzu 1 Blatt Zeichnungen.1 sheet of drawings.

Claims (1)

Patent-Anspruch:Patent claim: Schachtbohrer für schwimmendes und mildes Gebirge, gekennzeichnet durch einen an einer drehbaren Spindel (i) befestigten, kegelförmigen Hohlkörper (2) mit senkrechten Längsschlitzen (3) in den Wandungen, die durch übergreifende Bohrschneiden (4) teilweise überdeckt sind.Well drills for floating and mild mountains, characterized by a on a rotatable spindle (i) attached, conical hollow body (2) with vertical Longitudinal slots (3) in the walls, which are partially covered by overlapping cutting edges (4).
DENDAT295199D Active DE295199C (en)

Publications (1)

Publication Number Publication Date
DE295199C true DE295199C (en)

Family

ID=549699

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT295199D Active DE295199C (en)

Country Status (1)

Country Link
DE (1) DE295199C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3147520A (en) * 1961-09-11 1964-09-08 Ostich George Pouring bell reamer for casting molds
DE3527495A1 (en) * 1984-07-31 1986-02-13 Tokyo Electric Co., Ltd., Tokio/Tokyo PAPER FEEDER

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3147520A (en) * 1961-09-11 1964-09-08 Ostich George Pouring bell reamer for casting molds
DE3527495A1 (en) * 1984-07-31 1986-02-13 Tokyo Electric Co., Ltd., Tokio/Tokyo PAPER FEEDER

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