GB877121A - Improvements in or relating to props, particularly pit props - Google Patents
Improvements in or relating to props, particularly pit propsInfo
- Publication number
- GB877121A GB877121A GB6146/58A GB614658A GB877121A GB 877121 A GB877121 A GB 877121A GB 6146/58 A GB6146/58 A GB 6146/58A GB 614658 A GB614658 A GB 614658A GB 877121 A GB877121 A GB 877121A
- Authority
- GB
- United Kingdom
- Prior art keywords
- prop
- clamp
- props
- pit
- holes
- 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
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D15/32—Telescopic props with parts held relatively to each other by friction or gripping by a deformable collar or clamping means applied symmetrically inside a locking ring
- E21D15/325—Telescopic props with parts held relatively to each other by friction or gripping by a deformable collar or clamping means applied symmetrically inside a locking ring by a clamping ring
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
- E21D15/502—Prop bodies characterised by their shape, e.g. of specified cross-section
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)
- Support Of Aerials (AREA)
- Clamps And Clips (AREA)
Abstract
877,121. Pit props. EGGEMANN, W., and CAMPENHAUSEN, VON E., [trading as SCHWARZ KOMM.-GES.,HERMANN]. Feb. 26, 1958 [March 19, 1957], No. 6146/58. Class 20(2) [Also in Group XXVIII] A telescopic pit prop having an inner part 11 of circular cross section frictionally held extended by a clamp 16 in an outer part 9 of circular cross - section, comprises guiding slots 27 in the outer part engaged by the ends of a pin 28 in the inner part to prevent the relative rotation of the two parts. The clamp is closed by a wedge claw 19 driven over the ends 17, 18 of the clamp by a wedge 21 passing through holes in these ends. The clamp is welded and connected by straps 14 to the outer prop part 9. The prop is set by wedges 34, 35 adapted to be pushed through holes 30, 31 in the outer prop part and to engage inclined surfaces 32, 33 on the inner prop part.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE877121X | 1957-03-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB877121A true GB877121A (en) | 1961-09-13 |
Family
ID=6817950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6146/58A Expired GB877121A (en) | 1957-03-19 | 1958-02-26 | Improvements in or relating to props, particularly pit props |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB877121A (en) |
-
1958
- 1958-02-26 GB GB6146/58A patent/GB877121A/en not_active Expired
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