GB897960A - Improvements in internal combustion percussion tools - Google Patents

Improvements in internal combustion percussion tools

Info

Publication number
GB897960A
GB897960A GB10269/60A GB1026960A GB897960A GB 897960 A GB897960 A GB 897960A GB 10269/60 A GB10269/60 A GB 10269/60A GB 1026960 A GB1026960 A GB 1026960A GB 897960 A GB897960 A GB 897960A
Authority
GB
United Kingdom
Prior art keywords
chamber
internal combustion
march
guide member
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
GB10269/60A
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.)
Atlas Copco AB
Original Assignee
Atlas Copco AB
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 Atlas Copco AB filed Critical Atlas Copco AB
Publication of GB897960A publication Critical patent/GB897960A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/06—Means for driving the impulse member
    • B25D9/10—Means for driving the impulse member comprising a built-in internal-combustion engine
    • 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
    • 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
    • E21B6/00—Drives for drilling with combined rotary and percussive action
    • E21B6/06—Drives for drilling with combined rotary and percussive action the rotation being intermittent, e.g. obtained by ratchet device
    • E21B6/08—Separate drives for percussion and rotation

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Earth Drilling (AREA)

Abstract

897,960. Percussive tools. ATLAS COPCO A.B. March 23, 1960 [March 31, 1959], No. 10269/60. Class 124. An internal combustion operated percussive tool as described in Specification 739,453 is modified in that it is provided with a hammer piston acting directly on the steel shank and is guided in a guide member between the check chamber and the auxiliary piston chamber. As shown, a free piston has a motor portion 33, an auxiliary portion 34 of larger diameter, and a blow delivering portion 35 having a smooth cylindrical surface along its whole length forming a seal with a bore 31 in a guide 32 and preventing the escape of compressed air from a chamber 39 to a chamber 40. Flushing air may be led from a chamber 28 through a passage 44, 45, controlled by an adjusting screw 46, through passages 47 in the guide member 32 to a space surrounding the end of the drill shank 48.
GB10269/60A 1959-03-31 1960-03-23 Improvements in internal combustion percussion tools Expired GB897960A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US803168A US3056390A (en) 1959-03-31 1959-03-31 Internal combustion percussion tools and hammer pistons for such tools

Publications (1)

Publication Number Publication Date
GB897960A true GB897960A (en) 1962-06-06

Family

ID=25185759

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10269/60A Expired GB897960A (en) 1959-03-31 1960-03-23 Improvements in internal combustion percussion tools

Country Status (3)

Country Link
US (1) US3056390A (en)
DE (1) DE1814996U (en)
GB (1) GB897960A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1283768B (en) * 1962-02-05 1968-11-21 Atlas Copco Ab Striking tool with a built-in combustion engine
US3154154A (en) * 1962-02-05 1964-10-27 Atlas Copco Ab Percussion tools incorporating a combustion cylinder for driving a reciprocable hammer piston
US3385379A (en) * 1967-02-16 1968-05-28 Bergman Gustav Albert Arrangement in motor driven reciprocating percussion machines with exchangeable tools
CH648506A5 (en) * 1982-09-22 1985-03-29 Cerac Inst Sa HAND HELD HITTING TOOL.
DE3310145C2 (en) * 1983-03-21 1993-10-21 Hilti Ag Electropneumatic hammer drill with replaceable hammer mechanism

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1920765A (en) * 1929-05-07 1933-08-01 Rasch Ludvik Percussion tool
US2479593A (en) * 1945-09-04 1949-08-23 Carl S Weyandt Internal-combustion percussion tool control
US2686501A (en) * 1950-10-25 1954-08-17 Syntron Co Ignition speed cutout for internal-combustion percussion tools
US2764138A (en) * 1953-03-02 1956-09-25 Atlas Copco Ab Percussion tools having a reciprocable hammer piston actuated by combustion gases
US2854962A (en) * 1955-05-17 1958-10-07 Bergman Gustav Albert Explosion percussion machines with a freely running striking piston
US2857988A (en) * 1956-03-19 1958-10-28 Kelsey Hayes Co Tractor-trailer brake system

Also Published As

Publication number Publication date
US3056390A (en) 1962-10-02
DE1814996U (en) 1960-07-14

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