GB712963A - Improvements in mine roof support caps - Google Patents

Improvements in mine roof support caps

Info

Publication number
GB712963A
GB712963A GB3066152A GB3066152A GB712963A GB 712963 A GB712963 A GB 712963A GB 3066152 A GB3066152 A GB 3066152A GB 3066152 A GB3066152 A GB 3066152A GB 712963 A GB712963 A GB 712963A
Authority
GB
United Kingdom
Prior art keywords
bar
pawl
hook
mine roof
extensions
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
GB3066152A
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.)
fur UNTERNEHMUNGEN DER EISEN U
Original Assignee
fur UNTERNEHMUNGEN DER EISEN U
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 fur UNTERNEHMUNGEN DER EISEN U filed Critical fur UNTERNEHMUNGEN DER EISEN U
Publication of GB712963A publication Critical patent/GB712963A/en
Expired legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00Caps for supporting mine roofs
    • E21D17/02Cantilever extension or similar protecting devices
    • E21D17/08Cap joints for obtaining a coal-face free of pit-props
    • E21D17/086Cap joints for obtaining a coal-face free of pit-props or articulated type

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)
  • Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)

Abstract

712,963. Couplings for mine roof support bars. AKT.-GES. FUR UNTERNEHMUNGEN DER EISENUND STAHLINDUSTRIE. Dec. 3, 1952 [Dec. 5, 1951], No. 30661/52. Class 20 (2) In connecting an advance mine roof support bar 1, Figs. 1, 2, to a propped bar 2, the bar 1 is swung up about its pivotal connection 6, 11 with the bar 2 whereupon a movable pawl 13 with a hooked end 18 on the bar 1 engages with a hook 7 on the bar 2 to hold the bar 1 in its raised position as shown in Fig. 1 prior to being finally clamped against the mine roof as shown in Fig. 2. The hook member 4 with the hook 7 carries trunnions 6 which are engaged by open jaws 11 on a forked member 8 having extensions 10 welded to both sides of the bar 1. The pawl 13 is supported in a slot 12 in the bar 1 between the extensions 10 and has a wide slot 14 adapted to receive a wedge 15 which enters through cut-away portions 16 in the extensions 10 and abuts at one side end faces 17 of the cut-away portions. On swinging up the bar 1, the end of the pawl 13 sides over the hook 7 until its hook 18 falls into position behind the hook 7. On driving in the wedge 15, the pawl 13 is moved longitudinally of the slot 12 and it together with the bar 1 swings upwardly into the roof supporting position. Instead of a wedge operating on the pawl, an eccentric, screw or bell-crank lever may be used and the pawl may be brought into engagement with the counter-pawl by lateral or upward movement under spring action.
GB3066152A 1951-12-05 1952-12-03 Improvements in mine roof support caps Expired GB712963A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1951A0014650 DE975231C (en) 1951-12-05 1951-12-05 Articulated cap connection

Publications (1)

Publication Number Publication Date
GB712963A true GB712963A (en) 1954-08-04

Family

ID=6923259

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3066152A Expired GB712963A (en) 1951-12-05 1952-12-03 Improvements in mine roof support caps

Country Status (4)

Country Link
DE (1) DE975231C (en)
FR (1) FR1067366A (en)
GB (1) GB712963A (en)
NL (2) NL174344B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2915328A (en) * 1957-07-08 1959-12-01 Hugh Wood And Company Ltd Bars for supporting the roof in mines and for like purposes

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE942322C (en) * 1954-03-16 1956-05-03 Ulrich Wichmann Articulated connection of caps

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE481680A (en) *
BE475032A (en) * 1946-08-28
DE803992C (en) * 1949-07-03 1951-04-16 Wilhelm Reppel Cap made of juxtaposed links for mining, especially longwall mining
DE801717C (en) * 1949-07-12 1951-01-22 Mannesmann Ag Cap connector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2915328A (en) * 1957-07-08 1959-12-01 Hugh Wood And Company Ltd Bars for supporting the roof in mines and for like purposes

Also Published As

Publication number Publication date
FR1067366A (en) 1954-06-15
NL88621C (en)
NL174344B (en)
DE975231C (en) 1961-10-12

Similar Documents

Publication Publication Date Title
GB712963A (en) Improvements in mine roof support caps
GB750229A (en) Improvements in and relating to the fixing of roof-supporting bars in coal mining
GB1116248A (en) Improvements in and relating to lifting clamps
GB1267521A (en) Extension clamp
GB729171A (en) Improvements relating to beams for mine supports
GB1392529A (en) Turnbuckles or screw shackles
GB722202A (en) Improvements in lagging members for mine galleries and the like
GB912987A (en) Improvements in or relating to rock bolts
GB743715A (en) Clamping device for use in the withdrawal of girders and the like jointed together by fishplates
GB706020A (en) Improvements in means for assembling mine roof supporting beams
GB750706A (en) Cap connection for mine roof support
GB1217466A (en) Improvements in or relating to devices for the extension of pit props
SU140442A1 (en) Rail Railing Device
GB504342A (en) Improvements in pit props
ES201787A1 (en) Car coupler
GB748081A (en) Connecting means for mine roof-supporting bars
GB709242A (en) Cap shoe for mine roof supports
GB737232A (en) Improvements in trailer couplings
GB1108528A (en) Improvements in or relating to lifting clamps
GB1071759A (en) Improvements in or relating to lifting clamps
GB1008996A (en) A device for setting to the roof an extension of a roof bar incorporated in a mine roof support
GB1002038A (en) Base plates for pit props
GB770741A (en) Improvements in connecting means for caps used in mining
GB738977A (en) Improvements relating to supporting devices more especially for horseheads and the like in coal mines
GB756069A (en) Improvements in or relating to coal face shoring structures