GB853822A - A roof supporting frame for use in mines - Google Patents
A roof supporting frame for use in minesInfo
- Publication number
- GB853822A GB853822A GB9692/58A GB969258A GB853822A GB 853822 A GB853822 A GB 853822A GB 9692/58 A GB9692/58 A GB 9692/58A GB 969258 A GB969258 A GB 969258A GB 853822 A GB853822 A GB 853822A
- Authority
- GB
- United Kingdom
- Prior art keywords
- roof
- hemscheidt
- bars
- mines
- support
- 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
- 229910000639 Spring steel Inorganic materials 0.000 abstract 1
- 239000003245 coal Substances 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
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Tents Or Canopies (AREA)
Abstract
853,822. Mine roof supports. HEMSCHEIDT, H. [trading as HEMSCHEIDT MASCHINENFABRIK, H.]. March 26, 1958 [April 13, 1957], No. 9692/58. Addition to 827,696. Class 20(2) A mine roof support as in the parent Specification wherein the spring steel strip 2 is releasably connected to the foot plates 1 by a quick release clamp, and the roof bars 7 carried by each prop 6 are releasably joined by a link 8 so that the props 6 comprising the support may be used separately. The inner section of the bars 7 tapers towards the roof. The hydraulic control valve 9 is on the inside of the foot plate farthest from the coal face. The transverse bearing springs 3 are larger than in the parent Specification and duplicated.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE853822X | 1957-04-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB853822A true GB853822A (en) | 1960-11-09 |
Family
ID=6788762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9692/58A Expired GB853822A (en) | 1957-04-13 | 1958-03-26 | A roof supporting frame for use in mines |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB853822A (en) |
-
1958
- 1958-03-26 GB GB9692/58A patent/GB853822A/en not_active Expired
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