GB133001A - - Google Patents

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Publication number
GB133001A
GB133001A GB133001DA GB133001A GB 133001 A GB133001 A GB 133001A GB 133001D A GB133001D A GB 133001DA GB 133001 A GB133001 A GB 133001A
Authority
GB
United Kingdom
Prior art keywords
layers
steel
mild
plates
section
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.)
Active
Application number
Publication of GB133001A publication Critical patent/GB133001A/en
Active 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
    • E21B10/36—Percussion drill bits

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)
  • Heat Treatment Of Articles (AREA)
  • Crushing And Pulverization Processes (AREA)

Abstract

133,001. Yule, J. A. May 19, 1919. Percussive drills are made of layers of different hardness electrically welded together so that they keep sharp in use. Plates t of tool steel are welded to layers m of mild steel preferably of expanded, pierced, serrated, indented, or other denuded section. The mild steel may be rolled to the required section and cut to length or dropforged. The mild-steel layers are allowed to project beyond the tool steel so that they can be electrically welded to, or drawn down to form, a shank. Water channels a may be left. The bit may be heat treated and air cooled to harden the plates t and leave the layers m soft.
GB133001D Active GB133001A (en)

Publications (1)

Publication Number Publication Date
GB133001A true GB133001A (en)

Family

ID=1726461

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
GB (1) GB133001A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202011103209U1 (en) * 2011-06-29 2012-11-23 Illinois Tool Works Inc. chisel tool

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202011103209U1 (en) * 2011-06-29 2012-11-23 Illinois Tool Works Inc. chisel tool

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