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GB339656A - Excavating method and apparatus - Google Patents

Excavating method and apparatus

Info

Publication number
GB339656A
GB339656A GB1785729A GB1785729A GB339656A GB 339656 A GB339656 A GB 339656A GB 1785729 A GB1785729 A GB 1785729A GB 1785729 A GB1785729 A GB 1785729A GB 339656 A GB339656 A GB 339656A
Authority
GB
United Kingdom
Prior art keywords
standards
engaging
slots
depression
bolts
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
GB1785729A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1785729A priority Critical patent/GB339656A/en
Publication of GB339656A publication Critical patent/GB339656A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/10—Making by using boring or cutting machines
    • E21D9/1006—Making by using boring or cutting machines with rotary cutting tools
    • E21D9/104—Cutting tool fixtures

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Earth Drilling (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

339,656. App, O. O. June 11, 1929. Percussive channelling-drills.-In a tunnelling- machine with inclined arms carrying fluidactuated percussive tools cutting a conical series of steps, each arm has a depression 16 and parallel undercut slots 9, standards 12 having guide blocks 17 engaging the depression and being held in adjusted position by bolts 10 engaging the slots 9; slots 11 allow forward and rearward adjustment of the standards. The tools 6 are adjustably held in the standards by arms 14, which have hooks 15 engaging the standards and are connected above the casings by bolts.
GB1785729A 1929-06-11 1929-06-11 Excavating method and apparatus Expired GB339656A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1785729A GB339656A (en) 1929-06-11 1929-06-11 Excavating method and apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1785729A GB339656A (en) 1929-06-11 1929-06-11 Excavating method and apparatus

Publications (1)

Publication Number Publication Date
GB339656A true GB339656A (en) 1930-12-11

Family

ID=10102434

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1785729A Expired GB339656A (en) 1929-06-11 1929-06-11 Excavating method and apparatus

Country Status (1)

Country Link
GB (1) GB339656A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1198758B (en) * 1962-04-09 1965-08-19 Ingersoll Rand Co Multiple drill bits suitable for attachment to a rotatable drill rod

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1198758B (en) * 1962-04-09 1965-08-19 Ingersoll Rand Co Multiple drill bits suitable for attachment to a rotatable drill rod

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