FR1230085A - Support extension for mining - Google Patents

Support extension for mining

Info

Publication number
FR1230085A
FR1230085A FR796165A FR796165A FR1230085A FR 1230085 A FR1230085 A FR 1230085A FR 796165 A FR796165 A FR 796165A FR 796165 A FR796165 A FR 796165A FR 1230085 A FR1230085 A FR 1230085A
Authority
FR
France
Prior art keywords
mining
support extension
extension
support
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
FR796165A
Other languages
French (fr)
Inventor
Ludwig Vanwersch
Aloys Vanwersch
Peter Vanwersch
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
Priority claimed from DEV14483A external-priority patent/DE1198310B/en
Application filed filed Critical
Application granted granted Critical
Publication of FR1230085A publication Critical patent/FR1230085A/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
FR796165A 1958-05-30 1959-05-30 Support extension for mining Expired FR1230085A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEV14483A DE1198310B (en) 1958-05-30 1958-05-30 Expansion cap for mining operations
DEV14768A DE1224252B (en) 1958-05-30 1958-07-25 Expansion cap

Publications (1)

Publication Number Publication Date
FR1230085A true FR1230085A (en) 1960-09-13

Family

ID=26001295

Family Applications (1)

Application Number Title Priority Date Filing Date
FR796165A Expired FR1230085A (en) 1958-05-30 1959-05-30 Support extension for mining

Country Status (5)

Country Link
US (1) US3091088A (en)
BE (1) BE579173A (en)
DE (1) DE1224252B (en)
FR (1) FR1230085A (en)
GB (1) GB845976A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1140890B (en) * 1960-06-11 1962-12-13 Karl Maria Groetschel Dipl Ing Vorpfaendkappe, in particular Vorpfaendwendekappe
US4676970A (en) * 1985-05-14 1987-06-30 Elkem Metals Company Method for producing metal sulfide and the product produced therefrom

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL80173C (en) *
GB722202A (en) * 1951-11-13 1955-01-19 Josef Brand Improvements in lagging members for mine galleries and the like
GB774109A (en) * 1953-04-21 1957-05-08 Eisenwerk Wanheim Gmbh Improvements in or relating to mine roof support assemblies
AT199149B (en) * 1954-01-29 1958-08-11 Karl Maria Dipl Ing Groetschel Connection for shell iron for pit lining

Also Published As

Publication number Publication date
US3091088A (en) 1963-05-28
BE579173A (en)
DE1224252B (en) 1966-09-08
GB845976A (en) 1960-08-24

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