GB191211174A - Improvements in Deep Boring Rock-drills. - Google Patents

Improvements in Deep Boring Rock-drills.

Info

Publication number
GB191211174A
GB191211174A GB191211174DA GB191211174A GB 191211174 A GB191211174 A GB 191211174A GB 191211174D A GB191211174D A GB 191211174DA GB 191211174 A GB191211174 A GB 191211174A
Authority
GB
United Kingdom
Prior art keywords
feed
nut
piston
wheel
pressure
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
William Harker
Arthur Thomas Allcock
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 GB191211174A publication Critical patent/GB191211174A/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
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
    • E21B19/081—Screw-and-nut feed mechanisms

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)

Abstract

11,174. Harker, W., and Allcock, A. T. May 10. Bore-hole apparatus.-In deep-boring rock drills of the kind in which the feed-nut of the mechanical screw-feed is supported by a fluidsupported piston arranged in conjunction with a pressure recorder for ascertaining the weight of the drill rods, means are provided for the supply and discharge of fluid to and from the piston cylinder so that the feed may be accelerated or retarded, and the pressure on the drill crown adjusted as desired. The feed-nut f is supported on a piston k connected by a pipe q<1> with a pressure-recorder n and a pump, and by a discharge pipe with a reservoir, valves being provided to control the supply and discharge. A relief valve, which may be regulated according to the weight of the drill rods, is arranged between the pump and the cylinder. The mechanical feed may be obtained as described in Specification 22,339/02. The feed-nut f and the spur-wheel f<1> by which it is driven, instead of being formed in one, may be connected together by a key and feather so as to allow a greater range of movement for the piston and feed-nut without disengaging the spur-wheel f<1> from its driving-wheel.
GB191211174D 1912-05-10 1912-05-10 Improvements in Deep Boring Rock-drills. Expired GB191211174A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191211174T 1912-05-10

Publications (1)

Publication Number Publication Date
GB191211174A true GB191211174A (en) 1913-05-08

Family

ID=32368489

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191211174D Expired GB191211174A (en) 1912-05-10 1912-05-10 Improvements in Deep Boring Rock-drills.

Country Status (1)

Country Link
GB (1) GB191211174A (en)

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