GB782029A - Improvements in and relating to internal-combustion percussion tools - Google Patents

Improvements in and relating to internal-combustion percussion tools

Info

Publication number
GB782029A
GB782029A GB12534/55A GB1253455A GB782029A GB 782029 A GB782029 A GB 782029A GB 12534/55 A GB12534/55 A GB 12534/55A GB 1253455 A GB1253455 A GB 1253455A GB 782029 A GB782029 A GB 782029A
Authority
GB
United Kingdom
Prior art keywords
piston
valve
cylinder
tool
free
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
GB12534/55A
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
Publication of GB782029A publication Critical patent/GB782029A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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

Abstract

782,029. Percussive drills. BERGMAN, G. A. April 29, 1955 [May 4, 1954; May 4, 1954], No. 12534/55. Class 124. An internal combustion engine driven percussive drill having a free striking piston in the form of a differential piston the large portion of which, operating in a cylinder adjacent the engine cylinder, forms an air compressor in which the inlet and outlet valves are operable by air flow and are arranged in passages extending to and from the end of the air compressor cylinder adjacent the engine cylinder, the passages being situated diametrically opposite each other. As shown, a free striking piston has its small diameter 10 in the engine cylinder and its large diameter 14 in a compressor cylinder 16, an extension 48 extending downwardly through a guide 62 to strike a tool 70. Atmospheric air from a pipe 40 enters a space 22 above the piston 14 through a non- return valve 24, which may be a flap-valve, Fig. 2 (not shown) or a free disc, Fig. 3 (not shown), on the downward movement of the piston, and is discharged through a similar valve 26, a passage 42, a chamber 46, a passage 60, past the piston extension 48 to a bore 68 in the tool, on the return stroke. When the tool is used as a hammer, the valve 26 may discharge to atmosphere through an adjustable non-return valve, Fig. 4 (not shown).
GB12534/55A 1954-05-04 1955-04-29 Improvements in and relating to internal-combustion percussion tools Expired GB782029A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE782029X 1954-05-04

Publications (1)

Publication Number Publication Date
GB782029A true GB782029A (en) 1957-08-28

Family

ID=20336746

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12534/55A Expired GB782029A (en) 1954-05-04 1955-04-29 Improvements in and relating to internal-combustion percussion tools

Country Status (1)

Country Link
GB (1) GB782029A (en)

Similar Documents

Publication Publication Date Title
US1665046A (en) Pneumatic hammer
GB1498487A (en) Pneumatically-actuated impact drilling tool
GB1252512A (en)
GB1229122A (en)
GB957204A (en) Improvements in percussion tools
GB987104A (en) Improvements in percussion tools
GB782029A (en) Improvements in and relating to internal-combustion percussion tools
GB951919A (en) Improvements in percussion tools incorporating a combustion cylinder for driving a reciprocable hammer piston
GB707255A (en) Improvements in internal combustion drills
GB572448A (en) Improvements in or relating to rock drilling machines
GB897960A (en) Improvements in internal combustion percussion tools
US2926637A (en) Portable internal combustion percussion tools
GB739453A (en) Improvements in percussion tools having a reciprocable hammer piston actuated by combustion gases
GB575881A (en) Improvements relating to percussive tools operated by internal combustion of charges
GB1141616A (en) Improvements in or relating to striking devices for deep-well drill hammers
SU370337A1 (en) ^^ COMMON;
GB630743A (en) Improvements in or relating to valve mechanisms for rock drills
SU848341A1 (en) Pneumatic hammer
GB247642A (en) Improvements in and relating to hammer drills and like percussive portable tools
SU442297A1 (en) Pneumatic impact mechanism
GB520341A (en) Improvements in or relating to percussive drills
GB664984A (en) Improvements in and relating to percussive tools
GB171146A (en) Improvements in fluid pressure operated percussive tools
SU398743A1 (en) PNEUMATIC SHOCK MECHANISM
GB815990A (en) Improvements in and relating to percussion devices