DE247901C - - Google Patents

Info

Publication number
DE247901C
DE247901C DENDAT247901D DE247901DA DE247901C DE 247901 C DE247901 C DE 247901C DE NDAT247901 D DENDAT247901 D DE NDAT247901D DE 247901D A DE247901D A DE 247901DA DE 247901 C DE247901 C DE 247901C
Authority
DE
Germany
Prior art keywords
stamp
wedge
clamp band
punch
screws
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
DENDAT247901D
Other languages
German (de)
English (en)
Publication of DE247901C publication Critical patent/DE247901C/de
Active 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
    • E21D15/14—Telescopic props
    • E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
    • E21D15/32—Telescopic props with parts held relatively to each other by friction or gripping by a deformable collar or clamping means applied symmetrically inside a locking ring
    • E21D15/325—Telescopic props with parts held relatively to each other by friction or gripping by a deformable collar or clamping means applied symmetrically inside a locking ring by a clamping ring

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)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
DENDAT247901D Active DE247901C (enrdf_load_html_response)

Publications (1)

Publication Number Publication Date
DE247901C true DE247901C (enrdf_load_html_response)

Family

ID=506660

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT247901D Active DE247901C (enrdf_load_html_response)

Country Status (1)

Country Link
DE (1) DE247901C (enrdf_load_html_response)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE764943C (de) * 1940-03-15 1953-07-27 Eisenwerk Wanheim G M B H Grubenstempel
DE927148C (de) * 1938-12-28 1955-05-02 Karl Gerlach Stahlgrubenstempel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE927148C (de) * 1938-12-28 1955-05-02 Karl Gerlach Stahlgrubenstempel
DE764943C (de) * 1940-03-15 1953-07-27 Eisenwerk Wanheim G M B H Grubenstempel

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