NL70945C - Metal cover for mine support - Google Patents
Metal cover for mine supportInfo
- Publication number
- NL70945C NL70945C NL135668A NL135668A NL70945C NL 70945 C NL70945 C NL 70945C NL 135668 A NL135668 A NL 135668A NL 135668 A NL135668 A NL 135668A NL 70945 C NL70945 C NL 70945C
- Authority
- NL
- Netherlands
- Prior art keywords
- metal cover
- mine support
- mine
- support
- cover
- Prior art date
Links
- 239000002184 metal Substances 0.000 title 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)
- Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL135668A NL70945C (en) | 1947-10-28 | 1947-10-28 | Metal cover for mine support |
BE485483A BE485483A (en) | 1947-10-28 | 1948-10-26 | Steel hood for the support of mine galleries |
FR974408D FR974408A (en) | 1947-10-28 | 1948-10-28 | Steel cap for mine support system |
DE1949P0039445 DE937882C (en) | 1947-10-28 | 1949-04-10 | Cap connection for pit construction, preferably for longwall construction in mine operations underground |
DEV4526A DE944785C (en) | 1947-10-28 | 1949-04-10 | Cap connection for longwall mining in underground mining |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL135668A NL70945C (en) | 1947-10-28 | 1947-10-28 | Metal cover for mine support |
Publications (1)
Publication Number | Publication Date |
---|---|
NL70945C true NL70945C (en) | 1952-10-15 |
Family
ID=19866319
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL135668A NL70945C (en) | 1947-10-28 | 1947-10-28 | Metal cover for mine support |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE485483A (en) |
DE (2) | DE944785C (en) |
FR (1) | FR974408A (en) |
NL (1) | NL70945C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2991097A (en) * | 1948-07-08 | 1961-07-04 | Vanwersch Aloys | Connecting structure for beams of a roof support or the like |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE977597C (en) * | 1950-11-01 | 1967-06-22 | Ludwig Vanwersch | Expansion cap |
-
1947
- 1947-10-28 NL NL135668A patent/NL70945C/en active
-
1948
- 1948-10-26 BE BE485483A patent/BE485483A/en unknown
- 1948-10-28 FR FR974408D patent/FR974408A/en not_active Expired
-
1949
- 1949-04-10 DE DEV4526A patent/DE944785C/en not_active Expired
- 1949-04-10 DE DE1949P0039445 patent/DE937882C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2991097A (en) * | 1948-07-08 | 1961-07-04 | Vanwersch Aloys | Connecting structure for beams of a roof support or the like |
Also Published As
Publication number | Publication date |
---|---|
DE944785C (en) | 1956-06-21 |
BE485483A (en) | 1949-11-13 |
DE937882C (en) | 1956-01-19 |
FR974408A (en) | 1951-02-22 |
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