FR508626A - Drill bell - Google Patents

Drill bell

Info

Publication number
FR508626A
FR508626A FR508626A FR508626DA FR508626A FR 508626 A FR508626 A FR 508626A FR 508626 A FR508626 A FR 508626A FR 508626D A FR508626D A FR 508626DA FR 508626 A FR508626 A FR 508626A
Authority
FR
France
Prior art keywords
bell
drill
drill bell
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
FR508626A
Other languages
French (fr)
Inventor
Jean-Antoine Romeuf
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.)
JEAN ANTOINE ROMEUF
Original Assignee
JEAN ANTOINE ROMEUF
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 JEAN ANTOINE ROMEUF filed Critical JEAN ANTOINE ROMEUF
Application granted granted Critical
Publication of FR508626A publication Critical patent/FR508626A/en
Expired 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)
FR508626A 1919-11-17 1919-11-17 Drill bell Expired FR508626A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR508626T 1919-11-17

Publications (1)

Publication Number Publication Date
FR508626A true FR508626A (en) 1920-10-19

Family

ID=8910515

Family Applications (1)

Application Number Title Priority Date Filing Date
FR508626A Expired FR508626A (en) 1919-11-17 1919-11-17 Drill bell

Country Status (1)

Country Link
FR (1) FR508626A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1161524B (en) * 1956-02-18 1964-01-23 Deilmann Bergbau G M B H C Method and device for producing drill shafts and similar bores

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1161524B (en) * 1956-02-18 1964-01-23 Deilmann Bergbau G M B H C Method and device for producing drill shafts and similar bores

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