DE1902490C3 - Vorpfändeinrichtung für ein Grubenausbauelemenl - Google Patents

Vorpfändeinrichtung für ein Grubenausbauelemenl

Info

Publication number
DE1902490C3
DE1902490C3 DE19691902490 DE1902490A DE1902490C3 DE 1902490 C3 DE1902490 C3 DE 1902490C3 DE 19691902490 DE19691902490 DE 19691902490 DE 1902490 A DE1902490 A DE 1902490A DE 1902490 C3 DE1902490 C3 DE 1902490C3
Authority
DE
Germany
Prior art keywords
auxiliary
cap
pledging
ram
main
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
DE19691902490
Other languages
German (de)
English (en)
Other versions
DE1902490B2 (de
DE1902490A1 (de
Inventor
Archelaius Dawson Leyland Lancashire Allen (Grossbritannien)
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.)
GULLICK Ltd WIGAN LANCASHIRE (GROSSBRITANNIEN)
Original Assignee
GULLICK Ltd WIGAN LANCASHIRE (GROSSBRITANNIEN)
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 GULLICK Ltd WIGAN LANCASHIRE (GROSSBRITANNIEN) filed Critical GULLICK Ltd WIGAN LANCASHIRE (GROSSBRITANNIEN)
Publication of DE1902490A1 publication Critical patent/DE1902490A1/de
Publication of DE1902490B2 publication Critical patent/DE1902490B2/de
Application granted granted Critical
Publication of DE1902490C3 publication Critical patent/DE1902490C3/de
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
    • 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)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Lining And Supports For Tunnels (AREA)
  • Telescopes (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Tents Or Canopies (AREA)
  • Working Measures On Existing Buildindgs (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
DE19691902490 1968-01-25 1969-01-18 Vorpfändeinrichtung für ein Grubenausbauelemenl Expired DE1902490C3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB393768 1968-01-25

Publications (3)

Publication Number Publication Date
DE1902490A1 DE1902490A1 (de) 1969-08-28
DE1902490B2 DE1902490B2 (de) 1975-01-09
DE1902490C3 true DE1902490C3 (de) 1975-08-14

Family

ID=9767684

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19691902490 Expired DE1902490C3 (de) 1968-01-25 1969-01-18 Vorpfändeinrichtung für ein Grubenausbauelemenl

Country Status (3)

Country Link
JP (1) JPS493604B1 (enrdf_load_stackoverflow)
DE (1) DE1902490C3 (enrdf_load_stackoverflow)
GB (1) GB1234662A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2048355A (en) * 1979-05-08 1980-12-10 Gewerk Eisenhuette Westfalia Mine roof supports

Also Published As

Publication number Publication date
JPS493604B1 (enrdf_load_stackoverflow) 1974-01-28
DE1902490B2 (de) 1975-01-09
GB1234662A (enrdf_load_stackoverflow) 1971-06-09
DE1902490A1 (de) 1969-08-28

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)