GB191312560A - Improvements in Roller Boring Drills. - Google Patents

Improvements in Roller Boring Drills.

Info

Publication number
GB191312560A
GB191312560A GB191312560DA GB191312560A GB 191312560 A GB191312560 A GB 191312560A GB 191312560D A GB191312560D A GB 191312560DA GB 191312560 A GB191312560 A GB 191312560A
Authority
GB
United Kingdom
Prior art keywords
rollers
drill
head
roller
cutting
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
Inventor
Howard Robard Hughes
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
Application granted granted Critical
Publication of GB191312560A publication Critical patent/GB191312560A/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
    • E21B10/08—Roller bits
    • E21B10/10—Roller bits with roller axle supported at both ends

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)
  • Drilling And Boring (AREA)

Abstract

12,560. Hughes, H. R. May 29. Bore-hole apparatus.- A roller boring - drill comprises a head, a revoluble cutter extending diametrically across the head, and side cutters revolving in planes converging into the head, all but the active portions of the drill being housed in the head. As shown, the drill bead A carries cutting-rollers B, C on spindles 11, and also carries, on an horizontal shaft 3, tapered cutting- rollers D, E with interposed washers 7; the rollers D, E form a conical recess and tte rollers B, C cut a path around the recess, the teeth 9 of the latter rollers also cleaning the side of the hole. The cutting-surface of the roller C is wider and extends farther from the drill axis than that of the roller B, so as to cut a hole which allows clearance for the drill, or to under-ream a hole. The rollers B, C have conical recesses to receive wearing-blocks 10, between which b'ocks and washers 15 the rollers are secured by threaded spindles 11 which are locked by set-screws 16. Water passages 18 are provided, and also ducts 17 by which lubricant is led to the cutting-rollers from a holder secured to a flange 2. In a modification, the blocks 10 are provided with roller bearings or other frictionreducing devices.
GB191312560D 1913-05-29 1913-05-29 Improvements in Roller Boring Drills. Expired GB191312560A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191312560T 1913-05-29

Publications (1)

Publication Number Publication Date
GB191312560A true GB191312560A (en) 1914-05-28

Family

ID=32371298

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191312560D Expired GB191312560A (en) 1913-05-29 1913-05-29 Improvements in Roller Boring Drills.

Country Status (1)

Country Link
GB (1) GB191312560A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102400646A (en) * 2011-11-30 2012-04-04 四川深远石油钻井工具有限公司 Composite bit formed by rotary cut bit and roller bit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102400646A (en) * 2011-11-30 2012-04-04 四川深远石油钻井工具有限公司 Composite bit formed by rotary cut bit and roller bit
CN102400646B (en) * 2011-11-30 2015-05-20 四川深远石油钻井工具股份有限公司 Composite bit formed by rotary cut bit and roller bit

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