GB584220A - Improvements in roof supports for use in mines - Google Patents

Improvements in roof supports for use in mines

Info

Publication number
GB584220A
GB584220A GB25279/44A GB2527944A GB584220A GB 584220 A GB584220 A GB 584220A GB 25279/44 A GB25279/44 A GB 25279/44A GB 2527944 A GB2527944 A GB 2527944A GB 584220 A GB584220 A GB 584220A
Authority
GB
United Kingdom
Prior art keywords
prop
roof
distance piece
mavor
floor
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
GB25279/44A
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.)
Mavor and Coulson Ltd
Original Assignee
Mavor and Coulson Ltd
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 to NL66234D priority Critical patent/NL66234C/xx
Priority to BE471022D priority patent/BE471022A/xx
Application filed by Mavor and Coulson Ltd filed Critical Mavor and Coulson Ltd
Priority to GB25279/44A priority patent/GB584220A/en
Publication of GB584220A publication Critical patent/GB584220A/en
Priority to FR940432D priority patent/FR940432A/fr
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
    • E21D23/0004—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face
    • E21D23/0008—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face comprising a pair of joined struts
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G25/00—Shores or struts; Chocks
    • E04G25/04—Shores or struts; Chocks telescopic
    • E04G25/06—Shores or struts; Chocks telescopic with parts held together by positive means
    • E04G25/066—Shores or struts; Chocks telescopic with parts held together by positive means by a wedge

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
GB25279/44A 1944-12-16 1944-12-16 Improvements in roof supports for use in mines Expired GB584220A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NL66234D NL66234C (xx) 1944-12-16
BE471022D BE471022A (xx) 1944-12-16
GB25279/44A GB584220A (en) 1944-12-16 1944-12-16 Improvements in roof supports for use in mines
FR940432D FR940432A (fr) 1944-12-16 1947-02-10 Perfectionnements aux étançons en usage dans les mines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB25279/44A GB584220A (en) 1944-12-16 1944-12-16 Improvements in roof supports for use in mines

Publications (1)

Publication Number Publication Date
GB584220A true GB584220A (en) 1947-01-09

Family

ID=10225137

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25279/44A Expired GB584220A (en) 1944-12-16 1944-12-16 Improvements in roof supports for use in mines

Country Status (4)

Country Link
BE (1) BE471022A (xx)
FR (1) FR940432A (xx)
GB (1) GB584220A (xx)
NL (1) NL66234C (xx)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2795934A (en) * 1952-09-30 1957-06-18 Joy Mfg Co Rotating hydraulic roof supporting jacks
US3632075A (en) * 1969-04-02 1972-01-04 Devars Naudo & Cie Entreprises Dismantling keybolt for a propping-up and supporting framework

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2795934A (en) * 1952-09-30 1957-06-18 Joy Mfg Co Rotating hydraulic roof supporting jacks
US3632075A (en) * 1969-04-02 1972-01-04 Devars Naudo & Cie Entreprises Dismantling keybolt for a propping-up and supporting framework

Also Published As

Publication number Publication date
BE471022A (xx)
FR940432A (fr) 1948-12-13
NL66234C (xx)

Similar Documents

Publication Publication Date Title
GB584220A (en) Improvements in roof supports for use in mines
GR36365B (el) Μεθοδος δια την παρασκευην νεων υποκατεστημενων φαινυλοξεικων εστερων.
GB1033788A (en) Support chock for mine roofs
GB1287096A (en) Improvements relating to advancing roof supports for mine workings
ES395300A1 (es) Procedimiento y dispositivo para abrir tuneles, galerias o similares.
GB738819A (en) Improvements in and relating to the fixing of roof-supporting bars in coal mining
GB858633A (en) Shiftable roof support structure for working faces in mines
GB856768A (en) Putlog attachment
GB947252A (en) Self-advancing roof support frame assemblies for face galleries in mines
GB1226778A (xx)
GB1375562A (xx)
FR1279025A (fr) Soutènement pour chantier d'extraction du charbon en dressant avec front de taille en faille inverse, exploité de préférence mécaniquement
GB997006A (en) A mine roof support system comprising hydraulic roof supports
CH478241A (fr) Procédé de préparation de la 9-(B-D-arabinofuranosyl) adénine par fermentation
GB874435A (en) Advancing mine roof support structure for mine working faces
GB894995A (en) Improvements in or relating to hydraulic roof supports for mining operations
FR1193688A (fr) Monomères copolymérisables en particulier les dérivés de 2,2'-[isopropylidène bis (p-oxyphénylène)] dialcanols
SU289204A1 (ru) Способ щитовой проходки в сложных горногидрогеологических услови х
GB1218113A (en) Improvements to support piers for mines
GB851283A (en) Improvements in pit props
GB892179A (en) Improvements in or relating to hydraulically actuated self advancing roof props
GB1191739A (en) Propulsion Head for Horizontal or Inclined Forward Propulsion through Ground for Filter or other Pipes
GB716152A (en) Improvements in scaffolding
GB838192A (en) Method of blasting out rock excavations such as drifts, tunnels and the like
GB888756A (en) Improvements in and relating to shoring frames having locked joints