GB171014A - Rock drills - Google Patents

Rock drills

Info

Publication number
GB171014A
GB171014A GB27085/20A GB2708520A GB171014A GB 171014 A GB171014 A GB 171014A GB 27085/20 A GB27085/20 A GB 27085/20A GB 2708520 A GB2708520 A GB 2708520A GB 171014 A GB171014 A GB 171014A
Authority
GB
United Kingdom
Prior art keywords
shank
chuck
bit
recess
spring
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
GB27085/20A
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 GB27085/20A priority Critical patent/GB171014A/en
Publication of GB171014A publication Critical patent/GB171014A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/26—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by impact tools, e.g. by chisels or other tools having a cutting edge
    • 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like

Landscapes

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

Abstract

171,014. Bernay, H. Sept. 23, 1920. Percussive drills.-The bit 17 of a rock drill is a sliding fit in the walls of a chuck 7 by means of ribs 16, and is held by a spring-pressed plug 9 taking into recess 19 in the top of the bit. The chuck 7 screws on to the end of the drill shank, and the recess 19 is big enough to allow the passage of air or water from the central bore of the shank. In a modified device, the reduced end 19' of the drill shank acts as the plug, the spring being omitted.
GB27085/20A 1920-09-23 1920-09-23 Rock drills Expired GB171014A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB27085/20A GB171014A (en) 1920-09-23 1920-09-23 Rock drills

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB27085/20A GB171014A (en) 1920-09-23 1920-09-23 Rock drills

Publications (1)

Publication Number Publication Date
GB171014A true GB171014A (en) 1921-11-10

Family

ID=10253930

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27085/20A Expired GB171014A (en) 1920-09-23 1920-09-23 Rock drills

Country Status (1)

Country Link
GB (1) GB171014A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0074171A1 (en) * 1981-08-28 1983-03-16 John Macdonald & Company (Pneumatic Tools) Limited Tool assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0074171A1 (en) * 1981-08-28 1983-03-16 John Macdonald & Company (Pneumatic Tools) Limited Tool assembly

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