GB816820A - Apparatus for longwall mining - Google Patents

Apparatus for longwall mining

Info

Publication number
GB816820A
GB816820A GB18322/58A GB1832258A GB816820A GB 816820 A GB816820 A GB 816820A GB 18322/58 A GB18322/58 A GB 18322/58A GB 1832258 A GB1832258 A GB 1832258A GB 816820 A GB816820 A GB 816820A
Authority
GB
United Kingdom
Prior art keywords
longwall mining
march
mineral
mining
machine
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
GB18322/58A
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.)
Joy Manufacturing Co
Original Assignee
Joy 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 Joy Manufacturing Co filed Critical Joy Manufacturing Co
Publication of GB816820A publication Critical patent/GB816820A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C27/00—Machines which completely free the mineral from the seam
    • E21C27/10—Machines which completely free the mineral from the seam by both slitting and breaking-down
    • E21C27/12—Machines which completely free the mineral from the seam by both slitting and breaking-down breaking-down effected by acting on the vertical face of the mineral, e.g. by percussive tools
    • E21C27/124—Machines which completely free the mineral from the seam by both slitting and breaking-down breaking-down effected by acting on the vertical face of the mineral, e.g. by percussive tools with rotatable cutters provided with breaking-down members

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Cultivation Of Plants (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Dovetailed Work, And Nailing Machines And Stapling Machines For Wood (AREA)

Abstract

816,820. Mineral-mining apparatus. JOY MANUFACTURING CO. March 9, 1956 [March 28, 1955], No. 18322/56. Divided out of 801,636. Class 68(1) The mineral-mining machine is the same as that described in Specification 801,636 with however a different statement of claim, the invention claimed being restricted to the construction of the upper cutter unit 7 of the machine. Specification 772,513 [Group XXIX] also is referred to.
GB18322/58A 1955-03-28 1956-03-09 Apparatus for longwall mining Expired GB816820A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US816820XA 1955-03-28 1955-03-28

Publications (1)

Publication Number Publication Date
GB816820A true GB816820A (en) 1959-07-22

Family

ID=22165704

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18322/58A Expired GB816820A (en) 1955-03-28 1956-03-09 Apparatus for longwall mining

Country Status (1)

Country Link
GB (1) GB816820A (en)

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