GB1236833A - Improvements in support assemblies for mineral mines - Google Patents

Improvements in support assemblies for mineral mines

Info

Publication number
GB1236833A
GB1236833A GB412969A GB412969A GB1236833A GB 1236833 A GB1236833 A GB 1236833A GB 412969 A GB412969 A GB 412969A GB 412969 A GB412969 A GB 412969A GB 1236833 A GB1236833 A GB 1236833A
Authority
GB
United Kingdom
Prior art keywords
roof
girder
spring
support assemblies
urged
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
GB412969A
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.)
Gewerkschaft Eisenhutte Westfalia GmbH
Original Assignee
Gewerkschaft Eisenhutte Westfalia GmbH
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 Gewerkschaft Eisenhutte Westfalia GmbH filed Critical Gewerkschaft Eisenhutte Westfalia GmbH
Priority to GB412969A priority Critical patent/GB1236833A/en
Publication of GB1236833A publication Critical patent/GB1236833A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00—Caps for supporting mine roofs
    • E21D17/02—Cantilever extension or similar protecting devices
    • E21D17/0206—Hydraulically operated extension devices

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)
  • Current-Collector Devices For Electrically Propelled Vehicles (AREA)

Abstract

1,236,833. Advancing mine roof supports. GEWERKSCHAFT EISENHUTTE WESTFALIA. 24 Jan., 1969, No. 4129/69. Heading E1P. A mine roof support assembly comprises a hydraulic prop 13, a roof-engaging girder 1 and a cantilever extension 2 which is supported by a guide member 3 fixed relative to the girder, is actuated by a displacement device 4 and is urged into contact with the roof by means such as a spring 7 or a piston- and-cylinder unit. In a series of modifications, see Figs. 2-6 (not shown), the member 2 is in the form of a flat spring strip cranked at its front end which is advanced by spring means or a plunger and urged against the roof by like means or co-operating wedging surfaces.
GB412969A 1969-01-24 1969-01-24 Improvements in support assemblies for mineral mines Expired GB1236833A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB412969A GB1236833A (en) 1969-01-24 1969-01-24 Improvements in support assemblies for mineral mines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB412969A GB1236833A (en) 1969-01-24 1969-01-24 Improvements in support assemblies for mineral mines

Publications (1)

Publication Number Publication Date
GB1236833A true GB1236833A (en) 1971-06-23

Family

ID=9771303

Family Applications (1)

Application Number Title Priority Date Filing Date
GB412969A Expired GB1236833A (en) 1969-01-24 1969-01-24 Improvements in support assemblies for mineral mines

Country Status (1)

Country Link
GB (1) GB1236833A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2138062A (en) * 1983-04-16 1984-10-17 Dowty Mining Equipment Ltd Roof support suitable for use in mines
CZ308397B6 (en) * 2019-10-25 2020-07-22 Ostroj A.S. Articulated steel mining joist to cover the ceiling at the point of contact between the face and the corridor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2138062A (en) * 1983-04-16 1984-10-17 Dowty Mining Equipment Ltd Roof support suitable for use in mines
US4512686A (en) * 1983-04-16 1985-04-23 Dowty Mining Equipment Limited Roof support suitable for use in mines
CZ308397B6 (en) * 2019-10-25 2020-07-22 Ostroj A.S. Articulated steel mining joist to cover the ceiling at the point of contact between the face and the corridor

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