GB793925A - Improvements in or relating to bore hole drilling equipment - Google Patents

Improvements in or relating to bore hole drilling equipment

Info

Publication number
GB793925A
GB793925A GB19483/57A GB1948357A GB793925A GB 793925 A GB793925 A GB 793925A GB 19483/57 A GB19483/57 A GB 19483/57A GB 1948357 A GB1948357 A GB 1948357A GB 793925 A GB793925 A GB 793925A
Authority
GB
United Kingdom
Prior art keywords
cylinder
air
inlet
bit
valve member
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
GB19483/57A
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 GB793925A publication Critical patent/GB793925A/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
    • E21B6/00—Drives for drilling with combined rotary and percussive action

Abstract

793,925. Boring earth. STENUICK, A. April 5, 1955 [Dec. 28, 1954], No. 19483/57. Divided out of 9951/55. Class 85 A percussive drill head comprises a cylinder 25, a bit 27 protruding from. the cylindei and adapted to bore a hole of greater diameter than the cylinder, a free piston 28 reciprocable in the cylinder to deliver blows to the bit, an air inlet 26 leading to the cylinder, a distributer valve member 38 directing air from the inlet to either side of the piston to cause it to reciprocate, a conduit 36 leading from the cylinder tc discharge air adjacent the bit, and a check valve member 59 near the inlet. The valve member 59 is urged by a spring 58 to close the inlet 26 when supply of air to the drill head is cut off, and retains air in the cylinder 25 and conduit 36 so that water from the formation being drilled does not enter the drill head. The invention is applied to the rotary percussive drill disclosed in Specification 714,663.
GB19483/57A 1954-12-28 1955-04-05 Improvements in or relating to bore hole drilling equipment Expired GB793925A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE793925X 1954-12-28

Publications (1)

Publication Number Publication Date
GB793925A true GB793925A (en) 1958-04-23

Family

ID=3880741

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19483/57A Expired GB793925A (en) 1954-12-28 1955-04-05 Improvements in or relating to bore hole drilling equipment

Country Status (1)

Country Link
GB (1) GB793925A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2972981A (en) * 1960-04-18 1961-02-28 Ingersoll Rand Co Rock drill
US3040710A (en) * 1960-01-20 1962-06-26 Pan American Petroleum Corp Check valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3040710A (en) * 1960-01-20 1962-06-26 Pan American Petroleum Corp Check valve
US2972981A (en) * 1960-04-18 1961-02-28 Ingersoll Rand Co Rock drill

Similar Documents

Publication Publication Date Title
GB1522932A (en) Fluid actuated impact tool
GB1495875A (en) Bore hole airhammer and anvil bit
GB1188619A (en) Improvements in or relating to core drilling
GB1275900A (en) A pressure fluid operated percussion tool
GB1067975A (en) Adapter device for percussion drill
GB1296476A (en)
GB1246388A (en) Down-hole fluid percussion drill for earth boring
GB793925A (en) Improvements in or relating to bore hole drilling equipment
US3085555A (en) Pneumatic hammer rock drill
GB963670A (en) Improvements in or relating to deep drills
GB1437420A (en) Method and apparatus for drilling in an earth formation
US2124609A (en) Drill cleansing device
GB946677A (en) Improvements in or relating to pneumatically operated percussive hammers
GB934166A (en) Rock drills and cutting implements therefor
GB1129349A (en) Improvements in or relating to drilling apparatus
US1978964A (en) Dustless rock drill
GB1125130A (en) A tube for grouting into bore holes drilled in earth
US2871826A (en) Hammer rock drill
GB897960A (en) Improvements in internal combustion percussion tools
GB812834A (en) Improvements in feed legs for rock or other drills
GB695009A (en) Improvements in and relating to rock drilling apparatus
GB667636A (en) Wet and dry backhead for rock drills
US1352428A (en) Rock-drill
GB693493A (en) Improvements in or relating to rock-boring and similar machines
GB1275443A (en) Improvements in or relating to percussion drills