DE209120C - - Google Patents

Info

Publication number
DE209120C
DE209120C DENDAT209120D DE209120DA DE209120C DE 209120 C DE209120 C DE 209120C DE NDAT209120 D DENDAT209120 D DE NDAT209120D DE 209120D A DE209120D A DE 209120DA DE 209120 C DE209120 C DE 209120C
Authority
DE
Germany
Prior art keywords
sheath
tubes
concrete
held together
longitudinal ribs
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.)
Active
Application number
DENDAT209120D
Other languages
German (de)
Publication of DE209120C publication Critical patent/DE209120C/de
Active legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/02—Non-telescopic props

Description

Hierzu 1 Blatt Zeichnungen.1 sheet of drawings.

BERLIN, GEDRUCKT IN DER REICHSDRUCKEREI.BERLIN, PRINTED IN THE REICHSDRUCKEREI.

Claims (1)

Patent-Anspruch:Patent claim: Mantel für Grubenstempel aus Beton, dadurch gekennzeichnet, daß er aus zwei mit Längsrippen (4) versehenen eisernen Halbrohren besteht, die durch Keilklammern (6) zusammengehalten werden. Sheath for pit punches made of concrete, characterized in that it consists of two with longitudinal ribs (4) provided iron half-tubes, which are held together by wedge clamps (6).
DENDAT209120D Active DE209120C (en)

Publications (1)

Publication Number Publication Date
DE209120C true DE209120C (en)

Family

ID=471108

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT209120D Active DE209120C (en)

Country Status (1)

Country Link
DE (1) DE209120C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0028496A1 (en) * 1979-11-02 1981-05-13 Mine Support Systems (Proprietary) Limited Timber prop

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0028496A1 (en) * 1979-11-02 1981-05-13 Mine Support Systems (Proprietary) Limited Timber prop

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