GB942221A - Improvements in and relating to mine roof supporting structures - Google Patents

Improvements in and relating to mine roof supporting structures

Info

Publication number
GB942221A
GB942221A GB1824761A GB1824761A GB942221A GB 942221 A GB942221 A GB 942221A GB 1824761 A GB1824761 A GB 1824761A GB 1824761 A GB1824761 A GB 1824761A GB 942221 A GB942221 A GB 942221A
Authority
GB
United Kingdom
Prior art keywords
mine roof
relating
supporting structures
roof supporting
roof
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
GB1824761A
Inventor
Gerald Herbert Cotterill
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.)
HERBERT COTTERILL Ltd
Original Assignee
HERBERT COTTERILL 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 HERBERT COTTERILL Ltd filed Critical HERBERT COTTERILL Ltd
Priority to GB1824761A priority Critical patent/GB942221A/en
Publication of GB942221A publication Critical patent/GB942221A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/48—Chocks or the like
    • E21D15/486—Chocks or the like with essential hydraulic or pneumatic details
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/60—Devices for withdrawing props or chocks
    • E21D15/603—Devices for withdrawing props or chocks by means of hydraulic devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)

Abstract

942,221. Advancing mine roof supports. HERBERT COTTERILL Ltd. May 21, 1962 [May 19, 1961], No. 18247/61. Heading EIE. An advancing mine roof support consists of box-like roof and floor caps 1, 12 respectively which have co-operating inclined engagement surfaces as shown and are inter-connected by hydraulic props 7 pivoted or hinged hereto. The device is advanced by hydraulic means (not shown), relative movement between the members 1, 12 facilitating disengagement from a setting mine roof.
GB1824761A 1961-05-19 1961-05-19 Improvements in and relating to mine roof supporting structures Expired GB942221A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1824761A GB942221A (en) 1961-05-19 1961-05-19 Improvements in and relating to mine roof supporting structures

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1824761A GB942221A (en) 1961-05-19 1961-05-19 Improvements in and relating to mine roof supporting structures

Publications (1)

Publication Number Publication Date
GB942221A true GB942221A (en) 1963-11-20

Family

ID=10109185

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1824761A Expired GB942221A (en) 1961-05-19 1961-05-19 Improvements in and relating to mine roof supporting structures

Country Status (1)

Country Link
GB (1) GB942221A (en)

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