GB1125760A - Roof support assembly suitable for use in mines - Google Patents
Roof support assembly suitable for use in minesInfo
- Publication number
- GB1125760A GB1125760A GB5345665A GB5345665A GB1125760A GB 1125760 A GB1125760 A GB 1125760A GB 5345665 A GB5345665 A GB 5345665A GB 5345665 A GB5345665 A GB 5345665A GB 1125760 A GB1125760 A GB 1125760A
- Authority
- GB
- United Kingdom
- Prior art keywords
- roof support
- support assembly
- mines
- brackets
- roof
- 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
Links
- 230000000712 assembly Effects 0.000 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
- 238000005065 mining Methods 0.000 abstract 1
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
- E21D23/0047—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor without essential shifting devices
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)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
1,125,760. Advancing mine roof support assemblies. DOWTY MINING EQUIPMENT Ltd. 15 March, 1967 [16 Dec., 1965], No. 53456/65. Heading E1E. In an advancing mine roof support assembly comprising two rigidly interconnected outer frame units 1, 3 adapted to be advanced relative to a centrally disposed unit 2 the central unit is provided with brackets 10, 11 and the outer units are joined by a pivoted bar 12 in such a manner that said brackets and bar prevent retraction of the upper-side of one roof-engaging member below the lowermost level of the associated roof-engaging member.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5345665A GB1125760A (en) | 1965-12-16 | 1965-12-16 | Roof support assembly suitable for use in mines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5345665A GB1125760A (en) | 1965-12-16 | 1965-12-16 | Roof support assembly suitable for use in mines |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1125760A true GB1125760A (en) | 1968-08-28 |
Family
ID=10467879
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5345665A Expired GB1125760A (en) | 1965-12-16 | 1965-12-16 | Roof support assembly suitable for use in mines |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1125760A (en) |
-
1965
- 1965-12-16 GB GB5345665A patent/GB1125760A/en not_active Expired
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