FR349374A - Improvements to percussion instruments such as rock drills, power hammers and the like - Google Patents

Improvements to percussion instruments such as rock drills, power hammers and the like

Info

Publication number
FR349374A
FR349374A FR349374A FR349374DA FR349374A FR 349374 A FR349374 A FR 349374A FR 349374 A FR349374 A FR 349374A FR 349374D A FR349374D A FR 349374DA FR 349374 A FR349374 A FR 349374A
Authority
FR
France
Prior art keywords
percussion instruments
rock drills
power hammers
hammers
power
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
FR349374A
Other languages
French (fr)
Inventor
William Brady
William Crane Spencer
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 FR349374A publication Critical patent/FR349374A/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
    • E21B1/34—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 the impulse member being a piston of an internal-combustion engine

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)
FR349374A 1904-12-22 1904-12-22 Improvements to percussion instruments such as rock drills, power hammers and the like Expired FR349374A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR349374T 1904-12-22

Publications (1)

Publication Number Publication Date
FR349374A true FR349374A (en) 1905-05-26

Family

ID=1397884

Family Applications (1)

Application Number Title Priority Date Filing Date
FR349374A Expired FR349374A (en) 1904-12-22 1904-12-22 Improvements to percussion instruments such as rock drills, power hammers and the like

Country Status (1)

Country Link
FR (1) FR349374A (en)

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