GB619806A - Improvements in or relating to overcutting chain-cutter jibs for coal mining machines - Google Patents

Improvements in or relating to overcutting chain-cutter jibs for coal mining machines

Info

Publication number
GB619806A
GB619806A GB3794446A GB3794446A GB619806A GB 619806 A GB619806 A GB 619806A GB 3794446 A GB3794446 A GB 3794446A GB 3794446 A GB3794446 A GB 3794446A GB 619806 A GB619806 A GB 619806A
Authority
GB
United Kingdom
Prior art keywords
chain
cutter
overcutting
jibs
relating
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
GB3794446A
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.)
Anderson Boyes and Co Ltd
Original Assignee
Anderson Boyes and Co Ltd
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 Anderson Boyes and Co Ltd filed Critical Anderson Boyes and Co Ltd
Priority to GB3794446A priority Critical patent/GB619806A/en
Publication of GB619806A publication Critical patent/GB619806A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
    • E21C25/52—Machines incorporating two or more of the slitting means according to groups E21C25/02, E21C25/06, E21C25/16, E21C25/20 and E21C25/22

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)
  • Jib Cranes (AREA)

Abstract

619,806. Coal-cutting machines. ANDERSON, A., and ANDERSON, BOYES, & CO., Ltd. Dec. 28, 1946, No. 37944. [Class 68 (i)] An overcutting cutter-chain jib for a coalmining machine comprises a lower auxiliary jib section 11 carrying a cutter-chain 12 and swingably mounted on a turret 15, and a main jib section 13 carrying a cutter chain 14 and attached to the overhung end of the section 11, whereby roof supports 16 may be extended over the machine. The chain 14 is driven by the chain 12.
GB3794446A 1946-12-28 1946-12-28 Improvements in or relating to overcutting chain-cutter jibs for coal mining machines Expired GB619806A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3794446A GB619806A (en) 1946-12-28 1946-12-28 Improvements in or relating to overcutting chain-cutter jibs for coal mining machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3794446A GB619806A (en) 1946-12-28 1946-12-28 Improvements in or relating to overcutting chain-cutter jibs for coal mining machines

Publications (1)

Publication Number Publication Date
GB619806A true GB619806A (en) 1949-03-15

Family

ID=10400117

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3794446A Expired GB619806A (en) 1946-12-28 1946-12-28 Improvements in or relating to overcutting chain-cutter jibs for coal mining machines

Country Status (1)

Country Link
GB (1) GB619806A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1167289B (en) * 1958-08-14 1964-04-09 Eickhoff Geb Extraction machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1167289B (en) * 1958-08-14 1964-04-09 Eickhoff Geb Extraction machine

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