FR1077402A - Safety device for articulation pins connecting metal casing elements - Google Patents

Safety device for articulation pins connecting metal casing elements

Info

Publication number
FR1077402A
FR1077402A FR1077402DA FR1077402A FR 1077402 A FR1077402 A FR 1077402A FR 1077402D A FR1077402D A FR 1077402DA FR 1077402 A FR1077402 A FR 1077402A
Authority
FR
France
Prior art keywords
safety device
metal casing
connecting metal
casing elements
pins connecting
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
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 filed Critical
Application granted granted Critical
Publication of FR1077402A publication Critical patent/FR1077402A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00—Caps for supporting mine roofs
    • E21D17/02—Cantilever extension or similar protecting devices
    • E21D17/08—Cap joints for obtaining a coal-face free of pit-props
    • E21D17/086—Cap joints for obtaining a coal-face free of pit-props or articulated type
FR1077402D 1953-01-28 1953-05-18 Safety device for articulation pins connecting metal casing elements Expired FR1077402A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG10833A DE952976C (en) 1953-01-28 1953-01-28 Swivel jointed cup irons

Publications (1)

Publication Number Publication Date
FR1077402A true FR1077402A (en) 1954-11-08

Family

ID=6662586

Family Applications (2)

Application Number Title Priority Date Filing Date
FR1077402D Expired FR1077402A (en) 1953-01-28 1953-05-18 Safety device for articulation pins connecting metal casing elements
FR1094700D Expired FR1094700A (en) 1953-01-28 1954-01-19

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR1094700D Expired FR1094700A (en) 1953-01-28 1954-01-19

Country Status (4)

Country Link
BE (2) BE521312A (en)
DE (1) DE952976C (en)
FR (2) FR1077402A (en)
GB (1) GB760604A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE199149C (en) * 1954-01-29
US2997319A (en) * 1958-04-22 1961-08-22 Schwarz Kg Hermann Cap unit for use in connection with mining
DE1198310B (en) * 1958-05-30 1965-08-12 Aloys Vanwersch Expansion cap for mining operations
DE1214184B (en) * 1958-05-30 1966-04-14 Ludwig Vanwersch Securing device for wedges and hinge pins of expansion caps
DE1243128B (en) * 1963-09-25 1967-06-29 Aloys Vanwersch Cap connection for Vorpfaendkappen

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE804317C (en) * 1949-03-22 1951-04-19 Otto Leppak Process for creating a stamp-free mining front in iron longwall construction

Also Published As

Publication number Publication date
BE521312A (en) 1953-07-31
DE952976C (en) 1956-11-22
FR1094700A (en) 1955-05-23
BE525927A (en) 1954-02-15
GB760604A (en) 1956-11-07

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