GB206974A - Improvements relating to miners' and similar drills - Google Patents

Improvements relating to miners' and similar drills

Info

Publication number
GB206974A
GB206974A GB2546522A GB2546522A GB206974A GB 206974 A GB206974 A GB 206974A GB 2546522 A GB2546522 A GB 2546522A GB 2546522 A GB2546522 A GB 2546522A GB 206974 A GB206974 A GB 206974A
Authority
GB
United Kingdom
Prior art keywords
miners
drills
improvements relating
shaped
similar
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
GB2546522A
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
Priority to GB2546522A priority Critical patent/GB206974A/en
Publication of GB206974A publication Critical patent/GB206974A/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
    • E21B10/00—Drill bits
    • E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts

Abstract

206,974. Thompson, J. T. Sept. 20, 1922. Drills. - In miners' and similar drills of the type in which the working end terminates in a pair of oppositely set laterally projecting lugs a in which are detachably mounted cutters c, the latter are T-shaped and the cross member of the. T is wedge-shaped. The shanks b, which may be of rectangular or other section, enter the lugs perpendicularly. The cutting edges may be of cast steel. Reference has been directed by the Comptroller to Specifications 10503/08, [Class 85, Mining &c.], and 178,621.
GB2546522A 1922-09-20 1922-09-20 Improvements relating to miners' and similar drills Expired GB206974A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2546522A GB206974A (en) 1922-09-20 1922-09-20 Improvements relating to miners' and similar drills

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2546522A GB206974A (en) 1922-09-20 1922-09-20 Improvements relating to miners' and similar drills

Publications (1)

Publication Number Publication Date
GB206974A true GB206974A (en) 1923-11-22

Family

ID=10228118

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2546522A Expired GB206974A (en) 1922-09-20 1922-09-20 Improvements relating to miners' and similar drills

Country Status (1)

Country Link
GB (1) GB206974A (en)

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