FR1148920A - Automatic activation control of one or more self-propelled props - Google Patents
Automatic activation control of one or more self-propelled propsInfo
- Publication number
- FR1148920A FR1148920A FR1148920DA FR1148920A FR 1148920 A FR1148920 A FR 1148920A FR 1148920D A FR1148920D A FR 1148920DA FR 1148920 A FR1148920 A FR 1148920A
- Authority
- FR
- France
- Prior art keywords
- props
- propelled
- self
- activation control
- automatic activation
- 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
- 230000004913 activation Effects 0.000 title 1
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
- E21D23/006—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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1148920T | 1956-03-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1148920A true FR1148920A (en) | 1957-12-18 |
Family
ID=9646556
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1148920D Expired FR1148920A (en) | 1956-03-21 | 1956-03-21 | Automatic activation control of one or more self-propelled props |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR1148920A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1132524B (en) * | 1959-01-23 | 1962-07-05 | Hazel Virginia Joseph | Wandering longwall mining |
DE1142569B (en) * | 1959-10-09 | 1963-01-24 | Gewerk Eisenhuette Westfalia | Device for backing conveyors |
DE1156038B (en) * | 1959-11-24 | 1963-10-24 | Houilleres Bassin Du Nord | Striding support frame for the expansion of underground spaces, especially longwall mining |
DE1193458B (en) * | 1958-08-11 | 1965-05-26 | Dobson Ltd W E & F | Wandering pit support |
DE1201287B (en) * | 1960-01-28 | 1965-09-23 | Maschfab Eisengiesserei Beien | Wandering longwall construction for planer struts or the like. |
DE1205034B (en) * | 1964-03-20 | 1965-11-18 | Coal Industry Patents Ltd | Wandering pit support |
DE1277786B (en) * | 1958-09-18 | 1968-09-19 | Bosch Gmbh Robert | Control unit for hydraulic pit extensions |
-
1956
- 1956-03-21 FR FR1148920D patent/FR1148920A/en not_active Expired
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1193458B (en) * | 1958-08-11 | 1965-05-26 | Dobson Ltd W E & F | Wandering pit support |
DE1277786B (en) * | 1958-09-18 | 1968-09-19 | Bosch Gmbh Robert | Control unit for hydraulic pit extensions |
DE1132524B (en) * | 1959-01-23 | 1962-07-05 | Hazel Virginia Joseph | Wandering longwall mining |
DE1142569B (en) * | 1959-10-09 | 1963-01-24 | Gewerk Eisenhuette Westfalia | Device for backing conveyors |
DE1156038B (en) * | 1959-11-24 | 1963-10-24 | Houilleres Bassin Du Nord | Striding support frame for the expansion of underground spaces, especially longwall mining |
DE1201287B (en) * | 1960-01-28 | 1965-09-23 | Maschfab Eisengiesserei Beien | Wandering longwall construction for planer struts or the like. |
DE1205034B (en) * | 1964-03-20 | 1965-11-18 | Coal Industry Patents Ltd | Wandering pit support |
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