BE419950A - - Google Patents
Info
- Publication number
- BE419950A BE419950A BE419950DA BE419950A BE 419950 A BE419950 A BE 419950A BE 419950D A BE419950D A BE 419950DA BE 419950 A BE419950 A BE 419950A
- Authority
- BE
- Belgium
- Prior art keywords
- prop
- adjustable
- metal
- irons
- support
- Prior art date
Links
- 235000000396 iron Nutrition 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 238000010276 construction Methods 0.000 claims description 2
- 210000000056 organ Anatomy 0.000 claims 1
- 125000006850 spacer group Chemical group 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- E21D15/285—Telescopic props with parts held relatively to each other by friction or gripping by means of wedges or wedge combinations
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Toys (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE419950A true BE419950A (instruction) |
Family
ID=82127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE419950D BE419950A (instruction) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE419950A (instruction) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE975697C (de) * | 1948-10-02 | 1962-05-24 | Gutehoffnungshuette Sterkrade | Schlossrahmen fuer Grubenstempel |
-
0
- BE BE419950D patent/BE419950A/fr unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE975697C (de) * | 1948-10-02 | 1962-05-24 | Gutehoffnungshuette Sterkrade | Schlossrahmen fuer Grubenstempel |
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