GB1004695A - Improvements in or relating to percussion drilling apparatus - Google Patents

Improvements in or relating to percussion drilling apparatus

Info

Publication number
GB1004695A
GB1004695A GB1688465A GB1688465A GB1004695A GB 1004695 A GB1004695 A GB 1004695A GB 1688465 A GB1688465 A GB 1688465A GB 1688465 A GB1688465 A GB 1688465A GB 1004695 A GB1004695 A GB 1004695A
Authority
GB
United Kingdom
Prior art keywords
piston
relating
drilling apparatus
percussion drilling
inflated
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
GB1688465A
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.)
Mission Manufacturing Co
Original Assignee
Mission Manufacturing Co
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 Mission Manufacturing Co filed Critical Mission Manufacturing Co
Publication of GB1004695A publication Critical patent/GB1004695A/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
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/06—Down-hole impacting means, e.g. hammers
    • E21B4/14—Fluid operated hammers

Abstract

1,004,695. Boring earth, &c. MISSION MANUFACTURING CO. Sept. 13, 1961 [Dec. 5, 1960], No. 16884/65. Divided out of 1,004,694. Heading E1F. [Also in Division B4] In a down-the-hole percussive drill having a hollow casing and a hammer piston, means arranged to expedite the reversal of motion of the piston comprise a resilient member 191 engageable by the piston at the rear end of its stroke. The member may be inflated by gas supplied through a passage 193 or may be permanently inflated.
GB1688465A 1960-12-05 1961-09-13 Improvements in or relating to percussion drilling apparatus Expired GB1004695A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US7361360A 1960-12-05 1960-12-05

Publications (1)

Publication Number Publication Date
GB1004695A true GB1004695A (en) 1965-09-15

Family

ID=22114749

Family Applications (2)

Application Number Title Priority Date Filing Date
GB1688465A Expired GB1004695A (en) 1960-12-05 1961-09-13 Improvements in or relating to percussion drilling apparatus
GB1688565A Expired GB1004696A (en) 1960-12-05 1961-09-13 Improvements in or relating to percussion drilling apparatus

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB1688565A Expired GB1004696A (en) 1960-12-05 1961-09-13 Improvements in or relating to percussion drilling apparatus

Country Status (1)

Country Link
GB (2) GB1004695A (en)

Also Published As

Publication number Publication date
GB1004696A (en) 1965-09-15

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