GB1306928A - Advanceable mine roof support - Google Patents

Advanceable mine roof support

Info

Publication number
GB1306928A
GB1306928A GB1306928DA GB1306928A GB 1306928 A GB1306928 A GB 1306928A GB 1306928D A GB1306928D A GB 1306928DA GB 1306928 A GB1306928 A GB 1306928A
Authority
GB
United Kingdom
Prior art keywords
mine roof
roof support
advanceable
advancing
support
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
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.)
Dowty Mining Equipment Ltd
Original Assignee
Dowty Mining Equipment 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 Dowty Mining Equipment Ltd filed Critical Dowty Mining Equipment Ltd
Publication of GB1306928A publication Critical patent/GB1306928A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/0052—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor with advancing shifting devices connected therewith

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Support Of Aerials (AREA)

Abstract

1306928 Advancing mine roof supports DOWTY MINING EQUIPMENT Ltd 20 April 1970 [21 April 1969] 20122/69 Heading E1P An advancing mine roof support is provided at its forward end with a jack 3, 4 adapted to urge a roller 6 into contact with the casing 10 of the advancing jack to lift the support off the ground and thereby facilitate its advance.
GB1306928D 1969-04-21 1969-04-21 Advanceable mine roof support Expired GB1306928A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2012269 1969-04-21

Publications (1)

Publication Number Publication Date
GB1306928A true GB1306928A (en) 1973-02-14

Family

ID=10140748

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1306928D Expired GB1306928A (en) 1969-04-21 1969-04-21 Advanceable mine roof support

Country Status (1)

Country Link
GB (1) GB1306928A (en)

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee