GB1440479A - Methods and apparatus for cutting spallable material - Google Patents

Methods and apparatus for cutting spallable material

Info

Publication number
GB1440479A
GB1440479A GB4612773A GB4612773A GB1440479A GB 1440479 A GB1440479 A GB 1440479A GB 4612773 A GB4612773 A GB 4612773A GB 4612773 A GB4612773 A GB 4612773A GB 1440479 A GB1440479 A GB 1440479A
Authority
GB
United Kingdom
Prior art keywords
groove
jets
cutting
slits
jet
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
GB4612773A
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.)
Atlas Copco AB
Original Assignee
Atlas Copco AB
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 Atlas Copco AB filed Critical Atlas Copco AB
Publication of GB1440479A publication Critical patent/GB1440479A/en
Expired 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
    • E21C25/60—Slitting by jets of water or other liquid

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)

Abstract

1440479 Jet cutting of materials ATLAS COPCO AB 3 Oct 1973 [3 Oct 1972 (2)] 46127/73 Heading E1F In an apparatus for cutting spallable material at least two mutually inclined high velocity jets 14, 16 of eroding fluid are directed on and moved along the material to form slits 18, 20 in the material, the jets being inclined in a plane normal to their direction of movement and being so spaced apart that material between the slits spalls out to form a groove 12 of a depth in which the jets will be divergent at the base of the groove and will enter the groove without contacting the sides of the groove. The two slits may be formed simultaneously or may be formed alternatively in step wise fashion. The angle between the centre line of each jet and the centre line of the groove may be fixed or adjustable. The jet forming nozzles may be fixed relative to each other or may be movable relative to one another such as being movable apart while the angle between the jets is maintained constant.
GB4612773A 1972-10-03 1973-10-03 Methods and apparatus for cutting spallable material Expired GB1440479A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ZA727054A ZA727054B (en) 1972-10-03 1972-10-03 Improvements in or relating to cutters

Publications (1)

Publication Number Publication Date
GB1440479A true GB1440479A (en) 1976-06-23

Family

ID=25565463

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4612773A Expired GB1440479A (en) 1972-10-03 1973-10-03 Methods and apparatus for cutting spallable material

Country Status (2)

Country Link
GB (1) GB1440479A (en)
ZA (1) ZA727054B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0535329A2 (en) * 1991-08-27 1993-04-07 Schneider, Francine Method and device for machining by means of multiple jets
US5399056A (en) * 1993-08-26 1995-03-21 Chemical Grouting Co., Ltd. Method for controlling a final pile diameter in a cast-in-place of solidification pile

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0535329A2 (en) * 1991-08-27 1993-04-07 Schneider, Francine Method and device for machining by means of multiple jets
EP0535329A3 (en) * 1991-08-27 1993-12-15 Schneider Francine Method and device for machining by means of multiple jets
US5399056A (en) * 1993-08-26 1995-03-21 Chemical Grouting Co., Ltd. Method for controlling a final pile diameter in a cast-in-place of solidification pile

Also Published As

Publication number Publication date
ZA727054B (en) 1974-02-27

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees