GB882210A - Improvements applicable to mining when using hydraulic frame supports - Google Patents
Improvements applicable to mining when using hydraulic frame supportsInfo
- Publication number
- GB882210A GB882210A GB13749/58A GB1374958A GB882210A GB 882210 A GB882210 A GB 882210A GB 13749/58 A GB13749/58 A GB 13749/58A GB 1374958 A GB1374958 A GB 1374958A GB 882210 A GB882210 A GB 882210A
- Authority
- GB
- United Kingdom
- Prior art keywords
- roof
- frames
- hydraulic
- hemscheidt
- liquid
- 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
- 238000005065 mining Methods 0.000 title 1
- 239000007788 liquid Substances 0.000 abstract 3
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
- E21D15/14—Telescopic props
- E21D15/46—Telescopic props with load-measuring devices; with alarm devices
- E21D15/465—Telescopic props with load-measuring devices; with alarm devices with essential hydraulic or pneumatic details
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)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
882,210. Hydraulic mine roof supports. HEMSCHEIDT, H., [trading as HEMSCHEIDT MASCHINENFABRIK, H.]. April 30, 1958 [April 30, 1957], No. 13749/58. Drawings to Specification. Class 20(2) A mine roof is supported by hydraulic frames supplied with liquid under pressure in series in a closed cycle by a pump and the liquid returns through a number of pipes at intervals along the series of frames in each of which is a liquid flaw meter so that varying increases in pressure caused by roof collapse can be ascertained. A meter at the end of the common return pipe indicates total increases. Mechanical convergence or roof collapse recondensers are placed adjacent individual roof frames for comparison and checking.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE882210X | 1957-04-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB882210A true GB882210A (en) | 1961-11-15 |
Family
ID=6831623
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB13749/58A Expired GB882210A (en) | 1957-04-30 | 1958-04-30 | Improvements applicable to mining when using hydraulic frame supports |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB882210A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3248885A (en) * | 1962-10-10 | 1966-05-03 | Dowty Mining Equipment Ltd | Roof support assemblies |
EP3187683A1 (en) * | 2015-12-30 | 2017-07-05 | Bomar S.A. w upadlosci ukladowej | A method for predicting crumps and methane hazard |
-
1958
- 1958-04-30 GB GB13749/58A patent/GB882210A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3248885A (en) * | 1962-10-10 | 1966-05-03 | Dowty Mining Equipment Ltd | Roof support assemblies |
EP3187683A1 (en) * | 2015-12-30 | 2017-07-05 | Bomar S.A. w upadlosci ukladowej | A method for predicting crumps and methane hazard |
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