FR1148920A - Automatic activation control of one or more self-propelled props - Google Patents

Automatic activation control of one or more self-propelled props

Info

Publication number
FR1148920A
FR1148920A FR1148920DA FR1148920A FR 1148920 A FR1148920 A FR 1148920A FR 1148920D A FR1148920D A FR 1148920DA FR 1148920 A FR1148920 A FR 1148920A
Authority
FR
France
Prior art keywords
props
propelled
self
activation control
automatic activation
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
Jacques Perrin
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 FR1148920A publication Critical patent/FR1148920A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/006—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices
    • E21D23/0073—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices with advancing shifting devices connected therewith

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
FR1148920D 1956-03-21 1956-03-21 Automatic activation control of one or more self-propelled props Expired FR1148920A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1148920T 1956-03-21

Publications (1)

Publication Number Publication Date
FR1148920A true FR1148920A (en) 1957-12-18

Family

ID=9646556

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1148920D Expired FR1148920A (en) 1956-03-21 1956-03-21 Automatic activation control of one or more self-propelled props

Country Status (1)

Country Link
FR (1) FR1148920A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1132524B (en) * 1959-01-23 1962-07-05 Hazel Virginia Joseph Wandering longwall mining
DE1142569B (en) * 1959-10-09 1963-01-24 Gewerk Eisenhuette Westfalia Device for backing conveyors
DE1156038B (en) * 1959-11-24 1963-10-24 Houilleres Bassin Du Nord Striding support frame for the expansion of underground spaces, especially longwall mining
DE1193458B (en) * 1958-08-11 1965-05-26 Dobson Ltd W E & F Wandering pit support
DE1201287B (en) * 1960-01-28 1965-09-23 Maschfab Eisengiesserei Beien Wandering longwall construction for planer struts or the like.
DE1205034B (en) * 1964-03-20 1965-11-18 Coal Industry Patents Ltd Wandering pit support
DE1277786B (en) * 1958-09-18 1968-09-19 Bosch Gmbh Robert Control unit for hydraulic pit extensions

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1193458B (en) * 1958-08-11 1965-05-26 Dobson Ltd W E & F Wandering pit support
DE1277786B (en) * 1958-09-18 1968-09-19 Bosch Gmbh Robert Control unit for hydraulic pit extensions
DE1132524B (en) * 1959-01-23 1962-07-05 Hazel Virginia Joseph Wandering longwall mining
DE1142569B (en) * 1959-10-09 1963-01-24 Gewerk Eisenhuette Westfalia Device for backing conveyors
DE1156038B (en) * 1959-11-24 1963-10-24 Houilleres Bassin Du Nord Striding support frame for the expansion of underground spaces, especially longwall mining
DE1201287B (en) * 1960-01-28 1965-09-23 Maschfab Eisengiesserei Beien Wandering longwall construction for planer struts or the like.
DE1205034B (en) * 1964-03-20 1965-11-18 Coal Industry Patents Ltd Wandering pit support

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