GB188836A - Improvements relating to percussive coal-cutting machines, rock drills and the like - Google Patents

Improvements relating to percussive coal-cutting machines, rock drills and the like

Info

Publication number
GB188836A
GB188836A GB2413721A GB2413721A GB188836A GB 188836 A GB188836 A GB 188836A GB 2413721 A GB2413721 A GB 2413721A GB 2413721 A GB2413721 A GB 2413721A GB 188836 A GB188836 A GB 188836A
Authority
GB
United Kingdom
Prior art keywords
percussive
coal
improvements relating
cutting machines
rock drills
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
GB2413721A
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.)
JOHN SLATE ANDERSON
Original Assignee
JOHN SLATE ANDERSON
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 JOHN SLATE ANDERSON filed Critical JOHN SLATE ANDERSON
Priority to GB2413721A priority Critical patent/GB188836A/en
Publication of GB188836A publication Critical patent/GB188836A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
    • E21C25/64—Slitting machines guided solely by hand and either carried by hand or mounted on supports

Abstract

188,836. Anderson, J. S., and Miller, R. Sept. 10, 1921. Percussive drills.-A percussive drill or coal cutting tool is mounted to swing about two axes at right angles. The tool bracket q is attached to a cup p which carries a worm s gearing with a segment n pivoted to the cup. The pivot pin p<1> is carried by a block m attached to a bracket b which swings on a support h and is adjusted thereon by means of a second segment j at right angles to the segment n.
GB2413721A 1921-09-10 1921-09-10 Improvements relating to percussive coal-cutting machines, rock drills and the like Expired GB188836A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2413721A GB188836A (en) 1921-09-10 1921-09-10 Improvements relating to percussive coal-cutting machines, rock drills and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2413721A GB188836A (en) 1921-09-10 1921-09-10 Improvements relating to percussive coal-cutting machines, rock drills and the like

Publications (1)

Publication Number Publication Date
GB188836A true GB188836A (en) 1922-11-23

Family

ID=10206965

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2413721A Expired GB188836A (en) 1921-09-10 1921-09-10 Improvements relating to percussive coal-cutting machines, rock drills and the like

Country Status (1)

Country Link
GB (1) GB188836A (en)

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