GB191418404A - Improvements in Coal and Rock Boring Machines. - Google Patents

Improvements in Coal and Rock Boring Machines.

Info

Publication number
GB191418404A
GB191418404A GB191418404DA GB191418404A GB 191418404 A GB191418404 A GB 191418404A GB 191418404D A GB191418404D A GB 191418404DA GB 191418404 A GB191418404 A GB 191418404A
Authority
GB
United Kingdom
Prior art keywords
coal
percussion
passage
exhaust
piston
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
August Berner
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 GB191418404A publication Critical patent/GB191418404A/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
    • E21B1/00—Percussion drilling
    • E21B1/12—Percussion drilling with a reciprocating impulse member
    • E21B1/24—Percussion drilling with a reciprocating impulse member the impulse member being a piston driven directly by fluid pressure
    • E21B1/30—Percussion drilling with a reciprocating impulse member the impulse member being a piston driven directly by fluid pressure by air, steam or gas pressure
    • E21B1/32—Percussion drilling with a reciprocating impulse member the impulse member being a piston driven directly by fluid pressure by air, steam or gas pressure working with pulses

Landscapes

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

Abstract

18,404. Berner, A. Aug. 7, 1913, [Convention date]. Percussive drills.-In a coal or rock boring- machine operated by reciprocating columns of air, after each stroke of the piston 13 compressed air escapes from the percussion cylinder 9 through an exhaust valve 21. The exhaust passage may be controlled by a cock 22 to vary the force of the blow and two exhaust valves 21 may be provided. A spring 19 prevents the percussion piston 13 from striking the front cover of the percussion cylinder and a bifurcated air-inlet passage 15, 16, with a non-return valve 18 on the branch 16, protects the rear cover; a similar bifurcated passage may be provided for the front end of the percussion cylinder. Twist mechanism comprising a rifle bar 24, a ratchet-wheel 23 and a pawl is provided. Specification 35/14 is referred to.
GB191418404D 1913-08-07 1914-08-07 Improvements in Coal and Rock Boring Machines. Expired GB191418404A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE191418404X 1913-08-07

Publications (1)

Publication Number Publication Date
GB191418404A true GB191418404A (en) 1915-07-22

Family

ID=32604990

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191418404D Expired GB191418404A (en) 1913-08-07 1914-08-07 Improvements in Coal and Rock Boring Machines.

Country Status (1)

Country Link
GB (1) GB191418404A (en)

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