GB699297A - Improvements in and relating to couplings for lagging irons for supporting mine roofs - Google Patents
Improvements in and relating to couplings for lagging irons for supporting mine roofsInfo
- Publication number
- GB699297A GB699297A GB20019/50A GB2001950A GB699297A GB 699297 A GB699297 A GB 699297A GB 20019/50 A GB20019/50 A GB 20019/50A GB 2001950 A GB2001950 A GB 2001950A GB 699297 A GB699297 A GB 699297A
- Authority
- GB
- United Kingdom
- Prior art keywords
- irons
- iron
- wedge
- link
- fixed
- 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
- 235000000396 iron Nutrition 0.000 title abstract 5
- 230000008878 coupling Effects 0.000 title abstract 2
- 238000010168 coupling process Methods 0.000 title abstract 2
- 238000005859 coupling reaction Methods 0.000 title abstract 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 4
- PMVSDNDAUGGCCE-TYYBGVCCSA-L Ferrous fumarate Chemical compound [Fe+2].[O-]C(=O)\C=C\C([O-])=O PMVSDNDAUGGCCE-TYYBGVCCSA-L 0.000 abstract 2
- 229910052742 iron Inorganic materials 0.000 abstract 2
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
- E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
- E21D15/43—Details of wedges
-
- 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
- E21D17/086—Cap joints for obtaining a coal-face free of pit-props or articulated 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)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
Abstract
699,297. Mine-roof supports. GROETSCHEL. K. M. Aug. 11, 1950 [Oct. 1, 1948], No. 20019/50. Class 20(ii) Lagging irons for mine roofs are connected by a link b inserted in the box section ends of the irons so as to be relatively angularly movable and they can be fixed in any angular position. The link is connected with one iron a by means of a bolt i and slot h, and the other end # is rounded, reduced in cross-section and may be connected to the other iron a<SP>1 </SP>by a bolt o which is sufficiently loose fitting to ensure the direct contact of link and iron and to relieve it of strain so that it may easily be removed. The coupling may be fixed by a wedge p driven between the lagging irons. The edge of one iron engaging the wedge may be curved to allow the irons to be arranged and fixed in different lateral angular positions. The wedge may have a wide and narrow part to increase the range of vertical angular adjustment.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE699297X | 1948-10-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB699297A true GB699297A (en) | 1953-11-04 |
Family
ID=6608398
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB20019/50A Expired GB699297A (en) | 1948-10-01 | 1950-08-11 | Improvements in and relating to couplings for lagging irons for supporting mine roofs |
Country Status (3)
Country | Link |
---|---|
BE (1) | BE497570A (en) |
FR (1) | FR983542A (en) |
GB (1) | GB699297A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE938006C (en) * | 1954-02-09 | 1956-01-19 | Wilhelm Reppel | Caps designed to be lined up for pit lining, especially for longwall mining |
US3762172A (en) * | 1970-09-11 | 1973-10-02 | Gewerk Eisenhuette Westfalia | Mine roof support bar assemblies |
CN112962955A (en) * | 2021-02-24 | 2021-06-15 | 重庆拓达建设(集团)有限公司 | Kitchen and bathroom concrete waterproof guide wall pouring template and construction method |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3179447A (en) * | 1960-06-27 | 1965-04-20 | Fairchild Camera Instr Co | Limited movement hinge connection |
-
1949
- 1949-02-03 FR FR983542D patent/FR983542A/en not_active Expired
-
1950
- 1950-08-11 GB GB20019/50A patent/GB699297A/en not_active Expired
- 1950-08-14 BE BE497570D patent/BE497570A/xx unknown
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE938006C (en) * | 1954-02-09 | 1956-01-19 | Wilhelm Reppel | Caps designed to be lined up for pit lining, especially for longwall mining |
US3762172A (en) * | 1970-09-11 | 1973-10-02 | Gewerk Eisenhuette Westfalia | Mine roof support bar assemblies |
CN112962955A (en) * | 2021-02-24 | 2021-06-15 | 重庆拓达建设(集团)有限公司 | Kitchen and bathroom concrete waterproof guide wall pouring template and construction method |
Also Published As
Publication number | Publication date |
---|---|
BE497570A (en) | 1950-12-01 |
FR983542A (en) | 1951-06-25 |
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