GB738819A - Improvements in and relating to the fixing of roof-supporting bars in coal mining - Google Patents

Improvements in and relating to the fixing of roof-supporting bars in coal mining

Info

Publication number
GB738819A
GB738819A GB1162752A GB1162752A GB738819A GB 738819 A GB738819 A GB 738819A GB 1162752 A GB1162752 A GB 1162752A GB 1162752 A GB1162752 A GB 1162752A GB 738819 A GB738819 A GB 738819A
Authority
GB
United Kingdom
Prior art keywords
bar
eye
supporting bars
roof
relating
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
GB1162752A
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.)
Gutehoffnungshutte Sterkrade AG
Original Assignee
Gutehoffnungshutte Sterkrade AG
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 by Gutehoffnungshutte Sterkrade AG filed Critical Gutehoffnungshutte Sterkrade AG
Publication of GB738819A publication Critical patent/GB738819A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • E21D17/00—Caps for supporting mine roofs
    • E21D17/01—Caps for supporting mine roofs characterised by the shape of the cap, e.g. of specified cross-section
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00—Closure fasteners
    • Y10T292/08—Bolts
    • Y10T292/096—Sliding
    • Y10T292/1014—Operating means
    • Y10T292/1022—Rigid

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)
  • Emergency Lowering Means (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Current-Collector Devices For Electrically Propelled Vehicles (AREA)
  • Closures For Containers (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
GB1162752A 1951-05-15 1952-05-08 Improvements in and relating to the fixing of roof-supporting bars in coal mining Expired GB738819A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEG8038A DE1022992B (de) 1951-05-15 1951-05-15 Grubenausbaukappe mit Gelenkverbindung
DE738819X 1951-05-15

Publications (1)

Publication Number Publication Date
GB738819A true GB738819A (en) 1955-10-19

Family

ID=25947327

Family Applications (2)

Application Number Title Priority Date Filing Date
GB1162752A Expired GB738819A (en) 1951-05-15 1952-05-08 Improvements in and relating to the fixing of roof-supporting bars in coal mining
GB247253A Expired GB750229A (en) 1951-05-15 1953-01-28 Improvements in and relating to the fixing of roof-supporting bars in coal mining

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB247253A Expired GB750229A (en) 1951-05-15 1953-01-28 Improvements in and relating to the fixing of roof-supporting bars in coal mining

Country Status (6)

Country Link
US (1) US2780067A (ko)
BE (3) BE511158A (ko)
DE (3) DE1022992B (ko)
FR (4) FR1050837A (ko)
GB (2) GB738819A (ko)
NL (3) NL95333C (ko)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1122915B (de) * 1952-06-16 1962-02-01 Gerlach Karl Schwenkkappe fuer den Grubenausbau
US3097829A (en) * 1959-01-16 1963-07-16 Gullick Ltd Roof support in mines
DE1149679B (de) * 1960-04-01 1963-06-06 Karl M Groetschel Dipl Ing Vorrichtung zum maschinellen Verriegeln und Entriegeln von frei tragend vorzupfaendenden Kappen
US3163011A (en) * 1960-11-14 1964-12-29 Karl M Groetschel Connection for lagging irons
US4218094A (en) * 1978-02-06 1980-08-19 The Knapheide Mfg. Co. Safety brace
DE3629214A1 (de) * 1986-08-28 1988-03-10 Armo Bauelemente Ausbauprofil fuer den gruben- und tunnelausbau
CN110424991B (zh) * 2019-07-30 2021-07-23 中国矿业大学 一种可收缩式弧形顶梁

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB416999A (en) * 1933-05-18 1934-09-26 Raine & Company Ltd An improved collapsible pit prop
BE485602A (ko) * 1948-07-30
FR993340A (fr) * 1951-04-23 1951-11-12 Bochumer Eisen Heintzmann Dispositif de soutènement pour exploitations minières par taille

Also Published As

Publication number Publication date
FR64232E (fr) 1955-11-09
NL95333C (ko) 1960-09-15
NL95340C (ko) 1960-09-15
BE511158A (ko) 1953-11-20
DE955679C (de) 1957-01-10
FR1089716A (fr) 1955-03-21
NL97173C (ko) 1961-03-15
BE525093A (ko) 1956-04-27
FR1050837A (fr) 1954-01-11
US2780067A (en) 1957-02-05
DE1031245B (de) 1958-06-04
BE517193A (ko) 1954-12-10
DE1022992B (de) 1958-01-23
GB750229A (en) 1956-06-13
FR63233E (fr) 1955-09-12

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