GB448821A - Improvements in percussive rock drills - Google Patents

Improvements in percussive rock drills

Info

Publication number
GB448821A
GB448821A GB25282/35A GB2528235A GB448821A GB 448821 A GB448821 A GB 448821A GB 25282/35 A GB25282/35 A GB 25282/35A GB 2528235 A GB2528235 A GB 2528235A GB 448821 A GB448821 A GB 448821A
Authority
GB
United Kingdom
Prior art keywords
percussive
class
rock drills
percussive rock
drills
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
GB25282/35A
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.)
WALLRAMIT HANDEL MIJ NV
Original Assignee
WALLRAMIT HANDEL MIJ NV
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 WALLRAMIT HANDEL MIJ NV filed Critical WALLRAMIT HANDEL MIJ NV
Publication of GB448821A publication Critical patent/GB448821A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/58—Chisel-type inserts

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Adornments (AREA)

Abstract

448,821. Percussive drills. NAAMLOOZE VENNOOTSCHAP WALLRAMIT HANDEL MAATSCHAPPIJ, 337, Heemraadssingel, Rotterdam, Holland. Sept. 11, 1935, No. 25282. Convention date, Oct. 9, 1934. [Class 124] The hardened cutting tip b of a percussive drill is welded or soldered to the shank a and has a cavity at its base which is filled with solder c<1> to form an elastic cushion. Specification 337,617, [Class 124], is referred to.
GB25282/35A 1934-10-09 1935-09-11 Improvements in percussive rock drills Expired GB448821A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE448821X 1934-10-09

Publications (1)

Publication Number Publication Date
GB448821A true GB448821A (en) 1936-06-16

Family

ID=6538183

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25282/35A Expired GB448821A (en) 1934-10-09 1935-09-11 Improvements in percussive rock drills

Country Status (1)

Country Link
GB (1) GB448821A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2522045A (en) * 1948-05-21 1950-09-12 Silas A Knowles Bit for rock drilling
DE4032066A1 (en) * 1990-10-05 1992-04-09 Schmalkalden Werkzeug Swf Fixing of cutter insert studs in rock drill crown - involves several studs fixed at angle in preformed recesses with press fit
EP0573135A1 (en) * 1992-05-27 1993-12-08 De Beers Industrial Diamond Division (Proprietary) Limited Abrasive tools

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2522045A (en) * 1948-05-21 1950-09-12 Silas A Knowles Bit for rock drilling
DE4032066A1 (en) * 1990-10-05 1992-04-09 Schmalkalden Werkzeug Swf Fixing of cutter insert studs in rock drill crown - involves several studs fixed at angle in preformed recesses with press fit
DE4032066C2 (en) * 1990-10-05 1999-04-15 Siegfried Treitz Arrangement and fastening of pin-shaped cutting inserts in rock drill bits
EP0573135A1 (en) * 1992-05-27 1993-12-08 De Beers Industrial Diamond Division (Proprietary) Limited Abrasive tools
US5423719A (en) * 1992-05-27 1995-06-13 Jennings; Bernard A. Abrasive tools

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