BE619391A - Movable support element for excavations - Google Patents

Movable support element for excavations

Info

Publication number
BE619391A
BE619391A BE619391A BE619391A BE619391A BE 619391 A BE619391 A BE 619391A BE 619391 A BE619391 A BE 619391A BE 619391 A BE619391 A BE 619391A BE 619391 A BE619391 A BE 619391A
Authority
BE
Belgium
Prior art keywords
excavations
support element
movable support
movable
support
Prior art date
Application number
BE619391A
Other languages
French (fr)
Inventor
Karl Maria Groetschel
Original Assignee
Karl Maria Groetschel
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 Karl Maria Groetschel filed Critical Karl Maria Groetschel
Publication of BE619391A publication Critical patent/BE619391A/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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 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
    • E21D23/0047—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor without essential shifting devices
BE619391A 1961-06-26 1962-06-26 Movable support element for excavations BE619391A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEG0032581 1961-06-26
DEG0035036 1962-05-22

Publications (1)

Publication Number Publication Date
BE619391A true BE619391A (en) 1962-12-27

Family

ID=25978347

Family Applications (1)

Application Number Title Priority Date Filing Date
BE619391A BE619391A (en) 1961-06-26 1962-06-26 Movable support element for excavations

Country Status (2)

Country Link
BE (1) BE619391A (en)
GB (1) GB1010948A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1219897A (en) * 1967-10-10 1971-01-20 Karl Maria Groetschel Improvements relating to roof supports for mine workings

Also Published As

Publication number Publication date
GB1010948A (en) 1965-11-24

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