GB1490441A - Percussive slot cutters - Google Patents

Percussive slot cutters

Info

Publication number
GB1490441A
GB1490441A GB583675A GB583675A GB1490441A GB 1490441 A GB1490441 A GB 1490441A GB 583675 A GB583675 A GB 583675A GB 583675 A GB583675 A GB 583675A GB 1490441 A GB1490441 A GB 1490441A
Authority
GB
United Kingdom
Prior art keywords
percussive
drill
slot cutters
movement
slot
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
GB583675A
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.)
Boart Hardmetals Pty Ltd
Original Assignee
Boart Hardmetals Pty Ltd
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 Boart Hardmetals Pty Ltd filed Critical Boart Hardmetals Pty Ltd
Priority to GB583675A priority Critical patent/GB1490441A/en
Publication of GB1490441A publication Critical patent/GB1490441A/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
    • E21D9/106—Making by using boring or cutting machines with percussive tools, e.g. pick-hammers
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C27/00—Machines which completely free the mineral from the seam
    • E21C27/20—Mineral freed by means not involving slitting
    • E21C27/28—Mineral freed by means not involving slitting by percussive drills with breaking-down means, e.g. wedge-shaped tools

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)

Abstract

1490441 Percussive drills BOART HARDMETALS (PTY) Ltd 11 Feb 1975 5836/75 Heading B4C A percussive drill 24 is mounted on an arm 16 pivotable by a ram 22 about a pivot 18 the whole assembly being mounted for movement along rails 13 to cut a series of slots 42, 44 such that the angle formed between the axis of the drill and the tangent to the point of contact with the arcuate slot in the direction of movement is always obtuse.
GB583675A 1975-02-11 1975-02-11 Percussive slot cutters Expired GB1490441A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB583675A GB1490441A (en) 1975-02-11 1975-02-11 Percussive slot cutters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB583675A GB1490441A (en) 1975-02-11 1975-02-11 Percussive slot cutters

Publications (1)

Publication Number Publication Date
GB1490441A true GB1490441A (en) 1977-11-02

Family

ID=9803549

Family Applications (1)

Application Number Title Priority Date Filing Date
GB583675A Expired GB1490441A (en) 1975-02-11 1975-02-11 Percussive slot cutters

Country Status (1)

Country Link
GB (1) GB1490441A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109849194A (en) * 2019-03-20 2019-06-07 中国恩菲工程技术有限公司 Lateral groove cutting tool in hole
CN114544220A (en) * 2022-02-08 2022-05-27 昆明冶金高等专科学校 Geological tunnel grooving sampling device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109849194A (en) * 2019-03-20 2019-06-07 中国恩菲工程技术有限公司 Lateral groove cutting tool in hole
CN114544220A (en) * 2022-02-08 2022-05-27 昆明冶金高等专科学校 Geological tunnel grooving sampling device

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee