GB722352A - Progressive mine adit timbering - Google Patents
Progressive mine adit timberingInfo
- Publication number
- GB722352A GB722352A GB13230/52A GB1323052A GB722352A GB 722352 A GB722352 A GB 722352A GB 13230/52 A GB13230/52 A GB 13230/52A GB 1323052 A GB1323052 A GB 1323052A GB 722352 A GB722352 A GB 722352A
- Authority
- GB
- United Kingdom
- Prior art keywords
- prop
- head
- cap
- released
- timbering
- 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
- 230000000750 progressive effect Effects 0.000 title 1
- 239000003245 coal Substances 0.000 abstract 2
- 101100521345 Mus musculus Prop1 gene Proteins 0.000 abstract 1
- 108700017836 Prophet of Pit-1 Proteins 0.000 abstract 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D17/00—Caps for supporting mine roofs
- E21D17/02—Cantilever extension or similar protecting devices
- E21D17/08—Cap joints for obtaining a coal-face free of pit-props
- E21D17/082—Cap joints for obtaining a coal-face free of pit-props of sliding type
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)
- Supports For Pipes And Cables (AREA)
Abstract
722,352. Mine roof supports. BUSCHMANN, A. May 26, 1952 [Nov. 3, 1951], No. 13230/52. Class 20 (2). A mine roof is supported by rows of props 1 having prop heads 4 through which a cap 8 is movable, as the coal face advances, when cutters 9 are released, whereupon the props can be released consecutively by means of their prop locks 3 and moved along the cap nearer to the coal face. There may be a key between the top of the cap and each prop head, which when released frees the head from the roof. The prop head rests on the lower flanges of the cap by means of adjustable flanges 17. The prop head engages the prop 1 by a curved part 11 and the head and prop are held in engagement by projections 12, 14 and a cable 15.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE722352X | 1951-11-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB722352A true GB722352A (en) | 1955-01-26 |
Family
ID=6631121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB13230/52A Expired GB722352A (en) | 1951-11-03 | 1952-05-26 | Progressive mine adit timbering |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB722352A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3077741A (en) * | 1956-12-03 | 1963-02-19 | Haarmann Arnold | Shiftable mine prop arrangement and process for shifting mine props |
| CN106050281A (en) * | 2016-08-10 | 2016-10-26 | 中国矿业大学(北京) | Anchor-cable box girder truss structure for coal mine tunnel roof support and supporting method |
-
1952
- 1952-05-26 GB GB13230/52A patent/GB722352A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3077741A (en) * | 1956-12-03 | 1963-02-19 | Haarmann Arnold | Shiftable mine prop arrangement and process for shifting mine props |
| CN106050281A (en) * | 2016-08-10 | 2016-10-26 | 中国矿业大学(北京) | Anchor-cable box girder truss structure for coal mine tunnel roof support and supporting method |
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