GB1136275A - Improvements in or relating to roofing bars - Google Patents

Improvements in or relating to roofing bars

Info

Publication number
GB1136275A
GB1136275A GB19947/66A GB1994766A GB1136275A GB 1136275 A GB1136275 A GB 1136275A GB 19947/66 A GB19947/66 A GB 19947/66A GB 1994766 A GB1994766 A GB 1994766A GB 1136275 A GB1136275 A GB 1136275A
Authority
GB
United Kingdom
Prior art keywords
girder
relating
roof
roofing
bars
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
GB19947/66A
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.)
Gewerkschaft Eisenhutte Westfalia GmbH
Original Assignee
Gewerkschaft Eisenhutte Westfalia GmbH
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 Gewerkschaft Eisenhutte Westfalia GmbH filed Critical Gewerkschaft Eisenhutte Westfalia GmbH
Publication of GB1136275A publication Critical patent/GB1136275A/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
    • E21D17/082—Cap joints for obtaining a coal-face free of pit-props of sliding type
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00—Caps for supporting mine roofs
    • E21D17/02—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
    • 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
    • E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
    • E21D23/06—Special mine caps or special tops of pit-props for permitting step-by-step movement
    • E21D23/063—Retractable cantilever extensions therefor

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)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
  • Door And Window Frames Mounted To Openings (AREA)
  • Soil Working Implements (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

1,136,275. Mine roof support beams GEWERKSCHAFT EISENHUTTE WESTFALIA. 5 May, 1966 [8 May, 1965], No. 19947/66. Heading E1E. A mine roof support comprises two girders 5, 6 which are adapted to be longitudinally advanced relative to one another, while there is always a part of the length of the girder 6 clamped between the roof and the girder 5, by a jack 10 arranged as shown. The girder 6 is of inverted U-shape and the arms thereof carry removable stops for guidance of the girder 5 which is articulated to a second roof bar 2, see also Fig. I (not shown).
GB19947/66A 1965-05-08 1966-05-05 Improvements in or relating to roofing bars Expired GB1136275A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG43547A DE1221177B (en) 1965-05-08 1965-05-08 Cap pull for retractable hydraulic support frames with front peg caps

Publications (1)

Publication Number Publication Date
GB1136275A true GB1136275A (en) 1968-12-11

Family

ID=7127212

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19947/66A Expired GB1136275A (en) 1965-05-08 1966-05-05 Improvements in or relating to roofing bars

Country Status (6)

Country Link
US (1) US3312071A (en)
BE (1) BE680651A (en)
DE (1) DE1221177B (en)
ES (1) ES326458A1 (en)
GB (1) GB1136275A (en)
NL (1) NL6606009A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1483910B1 (en) * 1966-11-16 1969-11-06 Groetschel Dipl Ing Karl M Traveling extension unit in the form of a three-man team
DE7033832U (en) * 1970-09-11 1971-01-28 Gewerk Eisenhuette Westfalia HINGED CAP FOR HIKING EXTENSION OF MOUNTAIN MINE EXTRACTIONS.
GB1329125A (en) * 1970-12-02 1973-09-05 Gullick Dobson Ltd Mine roof supports
DE2105795A1 (en) * 1971-02-08 1972-10-05 Hermann Hemscheidt, Maschinenfabrik, 5600 Wuppertal Articulated connection for caps of hydraulic support
US3877234A (en) * 1973-05-04 1975-04-15 Banyaszati Kutato Intezet Advanceable shield support
FR2302411A1 (en) * 1975-02-27 1976-09-24 Lorraine Houilleres SUPPORT TELESCOPIC HAT
GB1502131A (en) * 1975-05-22 1978-02-22 Fletcher Sutcliffe Wild Ltd Mine roof supports

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE900508C (en) * 1950-05-26 1953-12-28 Daimler Benz Ag Control device for fuel injection pumps
DE915206C (en) * 1951-11-28 1954-08-09 Alois Schubert Brush with insertable bristle holder
DE1164351B (en) * 1954-09-10 1964-03-05 Hansjoachim Von Hippel Dr Ing Vorpfaendkappe for stamp removal
FR1176512A (en) * 1956-06-05 1959-04-13 Hoesch Westfalenhuette Ag Timbering device
DE1182188B (en) * 1956-06-05 1964-11-26 Hoesch Ag Vorpfaendeinrichtung
FR1167165A (en) * 1957-02-22 1958-11-21 Mining stand
US3216202A (en) * 1962-11-09 1965-11-09 Gullick Ltd Roof supporting means for mines

Also Published As

Publication number Publication date
NL6606009A (en) 1966-11-10
ES326458A1 (en) 1967-03-01
US3312071A (en) 1967-04-04
BE680651A (en) 1966-11-07
DE1221177B (en) 1966-07-21

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