DE241253C - - Google Patents
Info
- Publication number
- DE241253C DE241253C DENDAT241253D DE241253DA DE241253C DE 241253 C DE241253 C DE 241253C DE NDAT241253 D DENDAT241253 D DE NDAT241253D DE 241253D A DE241253D A DE 241253DA DE 241253 C DE241253 C DE 241253C
- Authority
- DE
- Germany
- Prior art keywords
- punch
- clamping device
- parts
- pit
- punch part
- 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.)
- Active
Links
- 230000037431 insertion Effects 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 6
- 229910052742 iron Inorganic materials 0.000 claims 3
- 241000182341 Cubitermes group Species 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000004904 shortening 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
- E21D15/38—Telescopic props with parts held relatively to each other by friction or gripping with longitudinally-divided upper or lower prop parts, e.g. interfitting laminations
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)
- Braking Arrangements (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE241253C true DE241253C (fr) |
Family
ID=500556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT241253D Active DE241253C (fr) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE241253C (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE938784C (de) * | 1948-01-09 | 1956-02-09 | Eisenwerk Wanheim G M B H | Grubenstempel |
| DE1027614B (de) * | 1953-08-05 | 1958-04-10 | Becorit Grubenausbau Gmbh | Grubenstempel, insbesondere fuer steile und halbsteile Lagerung |
-
0
- DE DENDAT241253D patent/DE241253C/de active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE938784C (de) * | 1948-01-09 | 1956-02-09 | Eisenwerk Wanheim G M B H | Grubenstempel |
| DE1027614B (de) * | 1953-08-05 | 1958-04-10 | Becorit Grubenausbau Gmbh | Grubenstempel, insbesondere fuer steile und halbsteile Lagerung |
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