GB983551A - An advancing mine roof support - Google Patents

An advancing mine roof support

Info

Publication number
GB983551A
GB983551A GB9537/61A GB953761A GB983551A GB 983551 A GB983551 A GB 983551A GB 9537/61 A GB9537/61 A GB 9537/61A GB 953761 A GB953761 A GB 953761A GB 983551 A GB983551 A GB 983551A
Authority
GB
United Kingdom
Prior art keywords
jack
acting
locked
modification
pivoted
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
GB9537/61A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 DEG30180A external-priority patent/DE1158467B/de
Application filed by Individual filed Critical Individual
Publication of GB983551A publication Critical patent/GB983551A/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
    • E21D23/0069—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 without essential advancing shifting devices
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00—Caps for supporting mine roofs
    • E21D17/006—Caps for supporting mine roofs characterised by the material
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00—Caps for supporting mine roofs
    • E21D17/02—Cantilever extension or similar protecting devices
    • E21D17/0206—Hydraulically operated extension devices
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK 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
    • 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)
  • Actuator (AREA)
  • Bridges Or Land Bridges (AREA)
  • Paper (AREA)
GB9537/61A 1960-04-01 1961-03-15 An advancing mine roof support Expired GB983551A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DEG29358A DE1149679B (de) 1960-04-01 1960-04-01 Vorrichtung zum maschinellen Verriegeln und Entriegeln von frei tragend vorzupfaendenden Kappen
DEG29853A DE1152982B (de) 1960-04-01 1960-06-11 Vorrichtung zum maschinellen Verriegeln und Entriegeln von einer oder mehreren von einem Abstuetzelement aus durch Verriegelungsorgane frei tragend vorgepfaendeten Kappen
DEG30180A DE1158467B (de) 1960-07-28 1960-07-28 Vorrichtung zur hydraulischen Betaetigung der Verriegelung von einem rueckbaren Abstuetzelement fuer den Strebausbau freitragend vorgepfaendeter Kappen

Publications (1)

Publication Number Publication Date
GB983551A true GB983551A (en) 1965-02-17

Family

ID=27210584

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9537/61A Expired GB983551A (en) 1960-04-01 1961-03-15 An advancing mine roof support

Country Status (5)

Country Link
US (1) US3217498A (de)
AT (1) AT239727B (de)
BE (1) BE602123A (de)
DE (2) DE1149679B (de)
GB (1) GB983551A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2208676A (en) * 1987-08-13 1989-04-12 Dowty Mining Equipment Ltd Roof supports with tiltable cantilever extension

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1069100B (de) * 1959-11-19
US1469360A (en) * 1920-07-23 1923-10-02 Niles Bement Pond Co Clamp and grip chuck
US2749712A (en) * 1949-11-25 1956-06-12 Gerlach Karl Mine supporting structure for working mines
DE1022992B (de) * 1951-05-15 1958-01-23 Gutehoffnungshuette Sterkrade Grubenausbaukappe mit Gelenkverbindung
BE535250A (de) * 1954-01-29
US2884272A (en) * 1955-01-19 1959-04-28 Hans Gerlach Roof support structure for mine workings
GB950451A (en) * 1959-02-28 1964-02-26 Wilfrid George Reid Improvements in the jointing of plaster board and like structural materials

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2208676A (en) * 1987-08-13 1989-04-12 Dowty Mining Equipment Ltd Roof supports with tiltable cantilever extension
GB2208676B (en) * 1987-08-13 1991-12-04 Dowty Mining Equipment Ltd Roof supports

Also Published As

Publication number Publication date
US3217498A (en) 1965-11-16
DE1152982B (de) 1963-08-22
AT239727B (de) 1965-04-26
BE602123A (fr) 1961-10-02
DE1149679B (de) 1963-06-06

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