GB280033A - Improvements in rotary drill bits - Google Patents

Improvements in rotary drill bits

Info

Publication number
GB280033A
GB280033A GB28125/26A GB2812526A GB280033A GB 280033 A GB280033 A GB 280033A GB 28125/26 A GB28125/26 A GB 28125/26A GB 2812526 A GB2812526 A GB 2812526A GB 280033 A GB280033 A GB 280033A
Authority
GB
United Kingdom
Prior art keywords
cutter
rotary drill
shank
drill bits
tapered
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
GB28125/26A
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 GB28125/26A priority Critical patent/GB280033A/en
Publication of GB280033A publication Critical patent/GB280033A/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
    • E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable

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)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

280,033. Reed, C. E. Nov. 9, 1926. Drills.-In a rotary drill bit, particularly a flat fish-tail bit, the cutter 8 is secured in the body 1 by means of wedges 6 which pass through elongated slots in the body and the shank 7 of the cutter and are forced inwards by plugs 5 screwing in the body. The shank has a parallel and a tapered portion for fitting a socket in the body and the cutter has upwardly tapering sides 9 which engage a tapered recess 10 in the body to transmit the driving torque. The body and cutter are both of substantially flat cross-section, but the former has a central enlarged portion 1<a>. The usual passages 12 for fluid circulation are provided and a slot 13 provides for ejection of the cutter.
GB28125/26A 1926-11-09 1926-11-09 Improvements in rotary drill bits Expired GB280033A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB28125/26A GB280033A (en) 1926-11-09 1926-11-09 Improvements in rotary drill bits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB28125/26A GB280033A (en) 1926-11-09 1926-11-09 Improvements in rotary drill bits

Publications (1)

Publication Number Publication Date
GB280033A true GB280033A (en) 1927-11-10

Family

ID=10270650

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28125/26A Expired GB280033A (en) 1926-11-09 1926-11-09 Improvements in rotary drill bits

Country Status (1)

Country Link
GB (1) GB280033A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2185428A (en) * 1986-01-18 1987-07-22 Krupp Gmbh Method for the production of sintered bodies with internal passages, extrusion tool for carrying out the method and drilling tool

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2185428A (en) * 1986-01-18 1987-07-22 Krupp Gmbh Method for the production of sintered bodies with internal passages, extrusion tool for carrying out the method and drilling tool
GB2185428B (en) * 1986-01-18 1990-07-04 Krupp Gmbh A drilling tool

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