GB854978A - Improvements in supporting elements for mines - Google Patents
Improvements in supporting elements for minesInfo
- Publication number
- GB854978A GB854978A GB35580/57A GB3558057A GB854978A GB 854978 A GB854978 A GB 854978A GB 35580/57 A GB35580/57 A GB 35580/57A GB 3558057 A GB3558057 A GB 3558057A GB 854978 A GB854978 A GB 854978A
- Authority
- GB
- United Kingdom
- Prior art keywords
- band
- nov
- sections
- mines
- supporting elements
- 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
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
- E21D15/51—Component parts or details of props specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves
- E21D15/517—Extension elements
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical 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
854,978. Mine roof supports. EGGEMANN, W., and CAMPENHAUSEN E. VON [trading as SCHWARZ KOMM.-GES., H.]. Nov. 15, 1957 [Nov. 17, 1956 (2)], No. 35580/57. Class 20(2) A hydraulic pit prop comprises two telescoping parts of which the upper is separated into two sections 11, 16 between which is inserted an extension member 18 comprising four segments and secured by a band 19. The band 19 is releasably fastened by a quick release clip or wedge for withdrawing the prop. Alternatively the member 18 has annular flanges at each end which lie in recesses on the inside and outside of the sections 11, 16 respectively and the band 11 is replaced by pins passing through each annulus and section.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE854978X | 1956-11-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB854978A true GB854978A (en) | 1960-11-23 |
Family
ID=6788989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB35580/57A Expired GB854978A (en) | 1956-11-17 | 1957-11-15 | Improvements in supporting elements for mines |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB854978A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3356330A (en) * | 1965-04-23 | 1967-12-05 | Robert D Rambelle | Adjustable shoring member |
| CN109944615A (en) * | 2019-04-18 | 2019-06-28 | 东北大学 | Artificial ore pillar for underground support and erection method |
| WO2020024005A1 (en) * | 2018-07-31 | 2020-02-06 | Stand Technologies Pty Ltd | A heavy-duty jack stand |
-
1957
- 1957-11-15 GB GB35580/57A patent/GB854978A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3356330A (en) * | 1965-04-23 | 1967-12-05 | Robert D Rambelle | Adjustable shoring member |
| WO2020024005A1 (en) * | 2018-07-31 | 2020-02-06 | Stand Technologies Pty Ltd | A heavy-duty jack stand |
| US11448358B2 (en) | 2018-07-31 | 2022-09-20 | Stand Technologies Pty Ltd | Heavy-duty jack stand |
| CN109944615A (en) * | 2019-04-18 | 2019-06-28 | 东北大学 | Artificial ore pillar for underground support and erection method |
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