GB191102595A - Improvements in or relating to Hammer Rock Drills, Percussive Hammers and similar Tools. - Google Patents

Improvements in or relating to Hammer Rock Drills, Percussive Hammers and similar Tools.

Info

Publication number
GB191102595A
GB191102595A GB191102595DA GB191102595A GB 191102595 A GB191102595 A GB 191102595A GB 191102595D A GB191102595D A GB 191102595DA GB 191102595 A GB191102595 A GB 191102595A
Authority
GB
United Kingdom
Prior art keywords
main
air
percussive
cylinder
chuck
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
Albert Williams Daw
Zacharias Williams Daw
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 GB191102595A publication Critical patent/GB191102595A/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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/14—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using liquids and gases, e.g. foams

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)
  • Earth Drilling (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

2595. Daw, A. W., and Daw, Z. W. Feb. 1. Percussive drills; percussive hand tools.- Relates to percussive tools of the type in which a compressed-air cushion is provided to take up the shock of the hammer on the anvil, and also to debris-removing means for hammer rock drills. The tool-chuck 1 has a piston 2 working in a cylinder 13 to which air is fed either directly from the main or from the rear or front end of the main cylinder through a passage 5. A non-return valve 7 is provided in the air passage. The rear end of the cylinder 13 is constantly exhausted through a port 30 and the tool. For removing debris, during one stroke of the main piston sufficient water to lay the dust only is admitted through an inlet 9 and ring 12 to the chuck 1, and during the next stroke air passes from the main cylinder, through a passage having a non-return valve, to the ring 12 and chuck 1, forces the water through the tool into the bore-hole, and ejects therefrom the moistened debris. The inlet 9 is preferably small, to limit the supply, and opens to a larger hole 19, which forms a seal preventing air from reaching the water main; a non- return valve may also be provided.
GB191102595D 1911-02-01 1911-02-01 Improvements in or relating to Hammer Rock Drills, Percussive Hammers and similar Tools. Expired GB191102595A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191102595T 1911-02-01

Publications (1)

Publication Number Publication Date
GB191102595A true GB191102595A (en) 1911-08-10

Family

ID=32496117

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191102595D Expired GB191102595A (en) 1911-02-01 1911-02-01 Improvements in or relating to Hammer Rock Drills, Percussive Hammers and similar Tools.

Country Status (1)

Country Link
GB (1) GB191102595A (en)

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