GB971697A - Improvements in mine roof supports and advancing mechanisms therefor - Google Patents
Improvements in mine roof supports and advancing mechanisms thereforInfo
- Publication number
- GB971697A GB971697A GB3801660A GB3801660A GB971697A GB 971697 A GB971697 A GB 971697A GB 3801660 A GB3801660 A GB 3801660A GB 3801660 A GB3801660 A GB 3801660A GB 971697 A GB971697 A GB 971697A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mine roof
- roof supports
- rack
- mechanisms therefor
- advancing mechanisms
- 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
- 230000007246 mechanism Effects 0.000 title abstract 2
- 230000005540 biological transmission Effects 0.000 abstract 1
- 210000000078 claw Anatomy 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
- E21D23/0052—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor with advancing shifting devices connected therewith
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)
- Transmission Devices (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
971,697. Advancing mine roof supports. RHEINSTAHL WANHEIM G.m.b.H. Nov. 4, 1960 [Jan. 22, 1960], No. 38016/60. Heading E1E. In an advancing mine roof support comprising frames A, B alternately advanced by a power-driven rack and pinion mechanism 11, 12, 14, the racks 14 are guided in a transmission housing 13 which is of I-section with inturned flanges 10b and has a length corresponding to that of a rack. Rack projections 10c are secured by releasable pins 15 to claws 16 vertically guided in the 5, 6. Specification 951,593 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DER27163A DE1146465B (en) | 1960-01-22 | 1960-01-22 | Feed device for mining operations |
Publications (1)
Publication Number | Publication Date |
---|---|
GB971697A true GB971697A (en) | 1964-09-30 |
Family
ID=7402386
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3801660A Expired GB971697A (en) | 1960-01-22 | 1960-11-04 | Improvements in mine roof supports and advancing mechanisms therefor |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE1146465B (en) |
GB (1) | GB971697A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1207318B (en) * | 1963-07-26 | 1965-12-23 | Roger Louis Redhaber | Striding expansion team for mining operations |
DE1214629B (en) * | 1964-07-07 | 1966-04-21 | Konrad Grebe | Feed device for an expansion team |
DE1280183B (en) * | 1964-11-17 | 1968-10-17 | Dowty Mining Equipment Ltd | Wandering longwall mining |
-
1960
- 1960-01-22 DE DER27163A patent/DE1146465B/en active Pending
- 1960-11-04 GB GB3801660A patent/GB971697A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE1146465B (en) | 1963-04-04 |
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