DE293938C - - Google Patents

Info

Publication number
DE293938C
DE293938C DENDAT293938D DE293938DA DE293938C DE 293938 C DE293938 C DE 293938C DE NDAT293938 D DENDAT293938 D DE NDAT293938D DE 293938D A DE293938D A DE 293938DA DE 293938 C DE293938 C DE 293938C
Authority
DE
Germany
Prior art keywords
clamping
clamp
close
similar
held together
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
DENDAT293938D
Other languages
German (de)
Publication of DE293938C publication Critical patent/DE293938C/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
    • E21D15/14—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

Description

Hierzu 1 Blatt Zeichnungen.1 sheet of drawings.

Claims (1)

Patent-Anspruch:Patent claim: Zweiteiliger hölzerner, durch Klemmglieder zusammengehaltener Grubenstempel, dadurch gekennzeichnet, daß er aus zwei mit schräger, ebener Fläche aufeinander ruhenden Hälften besteht, die nahe dem oberen und unteren Ende der Stoßfläche durch je ein schellenartiges oder ähnliches Klemmglied miteinander verbunden sind.Two-part wooden pit stamp held together by clamping links, characterized in that it consists of two halves resting on one another with an inclined, flat surface, which are close to the upper and lower end of the abutment surface by a clamp-like or similar each Clamping member are connected to each other.
DENDAT293938D Active DE293938C (en)

Publications (1)

Publication Number Publication Date
DE293938C true DE293938C (en)

Family

ID=548556

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT293938D Active DE293938C (en)

Country Status (1)

Country Link
DE (1) DE293938C (en)

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