NL80452C - - Google Patents
Info
- Publication number
- NL80452C NL80452C NL146595A NL146595A NL80452C NL 80452 C NL80452 C NL 80452C NL 146595 A NL146595 A NL 146595A NL 146595 A NL146595 A NL 146595A NL 80452 C NL80452 C NL 80452C
- Authority
- NL
- Netherlands
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/08—Advancing mechanisms
- E21D23/081—Advancing mechanisms forming parts of the roof supports
- E21D23/087—Advancing mechanisms forming parts of the roof supports acting directly on the walls of the seam
- E21D23/088—Advancing mechanisms forming parts of the roof supports acting directly on the walls of the seam by means of wheels, rollers, caterpillars, belts or worm screws
-
- 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
- E21D15/58—Devices for setting props or chocks
- E21D15/585—Devices for setting props or chocks by means of hydraulically operated devices for mechanical props, or hydraulic props in which the hydraulic part is not important
- E21D15/586—Devices for setting props or chocks by means of hydraulically operated devices for mechanical props, or hydraulic props in which the hydraulic part is not important the props being pre-loaded
- E21D15/587—Devices for setting props or chocks by means of hydraulically operated devices for mechanical props, or hydraulic props in which the hydraulic part is not important the props being pre-loaded by means of power accumulators to be pre-charged by rock pressure
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/006—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices
- E21D23/0073—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices with advancing shifting devices connected therewith
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)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US53070A US2752757A (en) | 1948-10-06 | 1948-10-06 | Apparatus for mine roof control |
Publications (1)
Publication Number | Publication Date |
---|---|
NL80452C true NL80452C (nl) | 1956-02-15 |
Family
ID=21981742
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL146595A NL80452C (nl) | 1948-10-06 | 1949-05-23 |
Country Status (4)
Country | Link |
---|---|
US (1) | US2752757A (nl) |
BE (1) | BE489004A (nl) |
GB (1) | GB715673A (nl) |
NL (1) | NL80452C (nl) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2888230A (en) * | 1952-06-16 | 1959-05-26 | Mining Engineering Co Ltd | Roof supports |
DE1102075B (de) * | 1955-12-23 | 1961-03-16 | Mining Engineering Co Ltd | Wandernder Grubenausbau |
US2861429A (en) * | 1955-12-23 | 1958-11-25 | Mining Engineering Co Ltd | Roof supports for mine workings |
DE1150639B (de) * | 1957-04-13 | 1963-06-27 | Mining Engineering Co Ltd | Nachgiebige Tragvorrichtung fuer den Bergbau |
DE1193458B (de) * | 1958-08-11 | 1965-05-26 | Dobson Ltd W E & F | Wandernder Grubenausbau |
DE1146464B (de) * | 1959-07-18 | 1963-04-04 | Rheinstahl Gmbh Wanheim | Mittels Raupen fahrbares Ausbaugestell |
GB996137A (en) * | 1963-04-22 | 1965-06-23 | Dowty Mining Equipment Ltd | Mining apparatus |
GB1046269A (en) * | 1963-09-03 | 1966-10-19 | Dowty Mining Equipment Ltd | Advanceable roof support assembly |
US3778108A (en) * | 1972-02-29 | 1973-12-11 | Allied Chem | Trona mining method |
JPS5220302A (en) * | 1975-08-08 | 1977-02-16 | Taiheiyo Eng | Selfftravelling support for metal and coal mining heading |
US4167361A (en) * | 1978-08-30 | 1979-09-11 | Mine Safety Appliances Company | Temporary mine roof prop |
DE3100093A1 (de) * | 1981-01-03 | 1982-08-05 | Gewerkschaft Eisenhütte Westfalia, 4670 Lünen | Vorrichtung zur begrenzung des ausbauwiderstandes eines hydraulischen ausbauschildes |
US4312609A (en) * | 1980-07-01 | 1982-01-26 | Culley Jr Donnell H | Mine roof support system |
CN113719306B (zh) * | 2021-07-28 | 2022-05-06 | 中国矿业大学 | 一种液压支架智能供液泵站及控制方法 |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US81759A (en) * | 1868-09-01 | George edmund donisthorpe | ||
US76419A (en) * | 1868-04-07 | Peters | ||
US881609A (en) * | 1907-11-06 | 1908-03-10 | Friedrich Nellen | Prop for mines. |
US942170A (en) * | 1908-05-22 | 1909-12-07 | Sylvester M Dunlap | Shifting jack-screw. |
US1480733A (en) * | 1920-04-28 | 1924-01-15 | Morgan Olive Eugenie | System and apparatus for mining coal |
US1486293A (en) * | 1920-06-23 | 1924-03-11 | Morgan Olive Eugenie | Mining system and apparatus |
US1704866A (en) * | 1921-07-01 | 1929-03-12 | Morgan Olive Eugenie | Method of mining and mining apparatus |
US1736853A (en) * | 1924-03-08 | 1929-11-26 | Jeffrey Mfg Co | Mining machine |
US1588987A (en) * | 1924-09-16 | 1926-06-15 | O'toole Edward | Method of mining |
US1765200A (en) * | 1927-11-17 | 1930-06-17 | Bullough Enoch | Pit prop |
DE512214C (de) * | 1928-05-31 | 1930-11-10 | Albert Hamel | Verschiebbare Abbaukammer zum versatzlosen Rueckbau |
DE543896C (de) * | 1930-03-21 | 1932-02-11 | Hermann Klein | Auf dem Liegenden fahrbares Geruest mit Raupenbandverzug zum Abfangen des Hangenden |
US1998294A (en) * | 1933-10-19 | 1935-04-16 | Thomas Mineral Cutting Machine | Method of mining |
GB511557A (en) * | 1938-04-26 | 1939-08-21 | Edward John Leslie Hancock | Improvements in or relating to apparatus for use in mining |
US2256835A (en) * | 1939-06-16 | 1941-09-23 | Mercier Jean | Oleopneumatic device |
US2313242A (en) * | 1940-10-30 | 1943-03-09 | Bendix Aviat Corp | Shock strut |
US2420666A (en) * | 1941-09-12 | 1947-05-20 | Joseph F Joy | Hydro-pneumatic recuperator for guns |
US2420755A (en) * | 1942-12-04 | 1947-05-20 | Joy Mfg Co | Apparatus for mining |
US2352390A (en) * | 1943-05-13 | 1944-06-27 | Everett R Kirkland | Hydraulic jack |
-
1948
- 1948-10-06 US US53070A patent/US2752757A/en not_active Expired - Lifetime
-
1949
- 1949-04-26 GB GB11087/49A patent/GB715673A/en not_active Expired
- 1949-05-13 BE BE489004A patent/BE489004A/fr unknown
- 1949-05-23 NL NL146595A patent/NL80452C/nl active
Also Published As
Publication number | Publication date |
---|---|
BE489004A (nl) | 1949-05-31 |
US2752757A (en) | 1956-07-03 |
GB715673A (en) | 1954-09-22 |