GB750706A - Cap connection for mine roof support - Google Patents
Cap connection for mine roof supportInfo
- Publication number
- GB750706A GB750706A GB1249/54A GB124954A GB750706A GB 750706 A GB750706 A GB 750706A GB 1249/54 A GB1249/54 A GB 1249/54A GB 124954 A GB124954 A GB 124954A GB 750706 A GB750706 A GB 750706A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pawl
- bolt
- mine roof
- movement
- engageable
- 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
- 230000008719 thickening Effects 0.000 abstract 2
- 238000011084 recovery Methods 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
- E21D17/086—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)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE750706X | 1953-01-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB750706A true GB750706A (en) | 1956-06-20 |
Family
ID=6650691
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1249/54A Expired GB750706A (en) | 1953-01-17 | 1954-01-15 | Cap connection for mine roof support |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE525753A (pt) |
FR (1) | FR1091452A (pt) |
GB (1) | GB750706A (pt) |
NL (1) | NL87036C (pt) |
-
0
- BE BE525753D patent/BE525753A/xx unknown
- NL NL87036D patent/NL87036C/xx active
-
1954
- 1954-01-15 FR FR1091452D patent/FR1091452A/fr not_active Expired
- 1954-01-15 GB GB1249/54A patent/GB750706A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR1091452A (fr) | 1955-04-12 |
BE525753A (pt) | |
NL87036C (pt) |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB750706A (en) | Cap connection for mine roof support | |
GB750229A (en) | Improvements in and relating to the fixing of roof-supporting bars in coal mining | |
GB773407A (en) | Improvements in or relating to chocks, props and like roof supporting structures formines | |
GB712963A (en) | Improvements in mine roof support caps | |
GB770741A (en) | Improvements in connecting means for caps used in mining | |
GB1217466A (en) | Improvements in or relating to devices for the extension of pit props | |
GB756069A (en) | Improvements in or relating to coal face shoring structures | |
GB720537A (en) | Improvements in or relating to releasable supports for roofs in underground mines | |
GB1056317A (en) | Mine roof supports | |
GB504342A (en) | Improvements in pit props | |
GB804386A (en) | Improvements in or relating to link bar roof supports for mining | |
GB495781A (en) | Improvements in or relating to pit props | |
GB871054A (en) | Improvements in or relating to mine arches | |
GB772530A (en) | Improvements in or relating to pit props | |
GB769790A (en) | Improvements in and relating to expansion bolts | |
GB702309A (en) | Improvements in travelling mine supports | |
GB742788A (en) | An improved pit prop made of steel or light metal | |
GB718402A (en) | Improvements relating to bolt anchorages | |
GB768719A (en) | A new or improved chock release for supports for mine roofs | |
GB762750A (en) | A wedge for use in connections for girders supporting mine roofs | |
ES180159U (es) | Dispositivo de fijacion de un elemento de cara de apoyo hueca o que presenta, al menos, una parte concava, tal como placa ondulada o similar. | |
GB777477A (en) | A new or improved chock release for supports for mine roofs | |
GB748081A (en) | Connecting means for mine roof-supporting bars | |
GB729171A (en) | Improvements relating to beams for mine supports | |
GB584220A (en) | Improvements in roof supports for use in mines |