GB1157101A - An improvement in or relating to Mine Roof Support Means - Google Patents
An improvement in or relating to Mine Roof Support MeansInfo
- Publication number
- GB1157101A GB1157101A GB4903865A GB4903865A GB1157101A GB 1157101 A GB1157101 A GB 1157101A GB 4903865 A GB4903865 A GB 4903865A GB 4903865 A GB4903865 A GB 4903865A GB 1157101 A GB1157101 A GB 1157101A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mine roof
- detent
- roof support
- relating
- improvement
- 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
- 230000004048 modification Effects 0.000 abstract 2
- 238000012986 modification Methods 0.000 abstract 2
- 101100188555 Arabidopsis thaliana OCT6 gene Proteins 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)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
1,157,101. Advancing mine roof supports. DOLLERY. & PALMER Ltd. 6 Oct., 1966 [18 Nov., 1965], No. 49038/65. Heading E1P. In an advancing mine roof support comprising a pair of props 10 connected to a forward prop 12 by a double-acting jack 14 the latter depends from a guide plate 18 which is adapted to be located in one of two extreme positions by a detent 34 engaging holes 40 or 42 therein. In a modification comprising three aligned frames, see Figs. 1 -- 4 (not shown), of the Complete Drawings, the central frame is connected to the adjacent frames by a like detent to that set out above whereby the control frame can be advanced in two increments, the detent being operated by a lever. For other minor modifications the Specification should be referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4903865A GB1157101A (en) | 1965-11-18 | 1965-11-18 | An improvement in or relating to Mine Roof Support Means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4903865A GB1157101A (en) | 1965-11-18 | 1965-11-18 | An improvement in or relating to Mine Roof Support Means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1157101A true GB1157101A (en) | 1969-07-02 |
Family
ID=10450883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4903865A Expired GB1157101A (en) | 1965-11-18 | 1965-11-18 | An improvement in or relating to Mine Roof Support Means |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1157101A (en) |
-
1965
- 1965-11-18 GB GB4903865A patent/GB1157101A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |