FR920262A - metal mine prop - Google Patents

metal mine prop

Info

Publication number
FR920262A
FR920262A FR920262DA FR920262A FR 920262 A FR920262 A FR 920262A FR 920262D A FR920262D A FR 920262DA FR 920262 A FR920262 A FR 920262A
Authority
FR
France
Prior art keywords
metal mine
mine prop
prop
metal
mine
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
Other languages
French (fr)
Inventor
Edmond Baily
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 filed Critical
Application granted granted Critical
Publication of FR920262A publication Critical patent/FR920262A/en
Expired 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
    • E21D15/40—Collar or other support gripped to one or both parts by toggle-action, cam, or other member pivoted or similarly mounted
FR920262D 1946-01-16 1946-01-16 metal mine prop Expired FR920262A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR920262T 1946-01-16

Publications (1)

Publication Number Publication Date
FR920262A true FR920262A (en) 1947-04-02

Family

ID=9427367

Family Applications (1)

Application Number Title Priority Date Filing Date
FR920262D Expired FR920262A (en) 1946-01-16 1946-01-16 metal mine prop

Country Status (1)

Country Link
FR (1) FR920262A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE930923C (en) * 1949-11-03 1955-07-28 Ewald Wiemann Maschf Pit stamp
DE977408C (en) * 1951-02-24 1966-05-26 Karl Gerlach Pit stamp

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE930923C (en) * 1949-11-03 1955-07-28 Ewald Wiemann Maschf Pit stamp
DE977408C (en) * 1951-02-24 1966-05-26 Karl Gerlach Pit stamp

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