FR883575A - metal prop for mines - Google Patents
metal prop for minesInfo
- Publication number
- FR883575A FR883575A FR883575DA FR883575A FR 883575 A FR883575 A FR 883575A FR 883575D A FR883575D A FR 883575DA FR 883575 A FR883575 A FR 883575A
- Authority
- FR
- France
- Prior art keywords
- mines
- metal prop
- prop
- metal
- 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
- 239000002184 metal Substances 0.000 title 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)
- Sheet Holders (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DET1409D DE957206C (en) | 1940-12-27 | 1940-12-27 | Iron pit stamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR883575A true FR883575A (en) | 1943-07-08 |
Family
ID=7543450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR883575D Expired FR883575A (en) | 1940-12-27 | 1942-06-25 | metal prop for mines |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE957206C (en) |
| FR (1) | FR883575A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1141605B (en) * | 1959-11-10 | 1962-12-27 | Karl Gerlach | Multi-part pit stamp with friction lock |
-
1940
- 1940-12-27 DE DET1409D patent/DE957206C/en not_active Expired
-
1942
- 1942-06-25 FR FR883575D patent/FR883575A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE957206C (en) | 1957-01-31 |
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