GB320972A - A new or improved coupling for sectional roof-supporting arches applicable for use in coal mines and the like - Google Patents
A new or improved coupling for sectional roof-supporting arches applicable for use in coal mines and the likeInfo
- Publication number
- GB320972A GB320972A GB2234128A GB2234128A GB320972A GB 320972 A GB320972 A GB 320972A GB 2234128 A GB2234128 A GB 2234128A GB 2234128 A GB2234128 A GB 2234128A GB 320972 A GB320972 A GB 320972A
- Authority
- GB
- United Kingdom
- Prior art keywords
- applicable
- new
- coal mines
- improved coupling
- sleeve
- 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
- 239000003245 coal Substances 0.000 title 1
- 230000008878 coupling Effects 0.000 title 1
- 238000010168 coupling process Methods 0.000 title 1
- 238000005859 coupling reaction Methods 0.000 title 1
- 239000002184 metal Substances 0.000 abstract 2
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
- E21D11/22—Clamps or other yieldable means for interconnecting adjacent arch members either rigidly, or allowing arch member parts to slide when subjected to excessive pressure
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Clamps And Clips (AREA)
Abstract
320,972. Rothwell, N., and Smith, J. W. Aug. 2, 1928. Shoring; ironwork, constructional.- Sectional ironwork arch-forming members for use in mines are joined together by means of one-piece sleeves 2 shaped to fit approximately the section metal and secured in position by means of wedges 3 passing between the sleeve and the arch members. The sleeve may surround the whole or only a part of the section metal but bears on both sides of the web of the section. Sight holes 4 may be provided in the sides of the sleeve which may also be stiffened by ribs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2234128A GB320972A (en) | 1928-08-02 | 1928-08-02 | A new or improved coupling for sectional roof-supporting arches applicable for use in coal mines and the like |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2234128A GB320972A (en) | 1928-08-02 | 1928-08-02 | A new or improved coupling for sectional roof-supporting arches applicable for use in coal mines and the like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB320972A true GB320972A (en) | 1929-10-31 |
Family
ID=10177828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2234128A Expired GB320972A (en) | 1928-08-02 | 1928-08-02 | A new or improved coupling for sectional roof-supporting arches applicable for use in coal mines and the like |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB320972A (en) |
-
1928
- 1928-08-02 GB GB2234128A patent/GB320972A/en not_active Expired
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