GB900592A - Pit prop - Google Patents
Pit propInfo
- Publication number
- GB900592A GB900592A GB3413658A GB3413658A GB900592A GB 900592 A GB900592 A GB 900592A GB 3413658 A GB3413658 A GB 3413658A GB 3413658 A GB3413658 A GB 3413658A GB 900592 A GB900592 A GB 900592A
- Authority
- GB
- United Kingdom
- Prior art keywords
- members
- prop
- spring
- pit
- wedge
- 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 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
- E21D15/15—Means counteracting entry of dirt; Built-in cleaning devices
-
- 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
-
- 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
- E21D15/58—Devices for setting props or chocks
- E21D15/581—Devices for setting props or chocks in which the props are pre- loaded
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)
- Orthopedics, Nursing, And Contraception (AREA)
Abstract
900,592. Telescopic pit props. HEESE, H. Oct. 24, 1958 [Oct. 24, 1957], No. 34136/58. Class 20 (2). In a pit-prop comprising three telescopic members 1, 8, 30 the members 1, 8 have a buffer spring 3 disposed therebetween and the members 8, 30 are clamped together by a clamp 32 which has limbs accommodating a wedge 35 adapted to act on a pressuremember 34 displaceable in a limited direction parallel to the axis of the prop. The member 34 is pressure-loaded by a spring 39 and its degree of axial movement is controlled by the depth of a recess 42 in a cover 40 bolted to the clamp 32. The members 32, 34 are provided with aluminiurn friction linings 43, 44 and the member 30 with a rubber buffer 45. Loading of the spring 3 is effected by a wedge 11 which is driven in before the prop is erected.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEH0031446 | 1957-10-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB900592A true GB900592A (en) | 1962-07-11 |
Family
ID=7151621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3413658A Expired GB900592A (en) | 1957-10-24 | 1958-10-24 | Pit prop |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB900592A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011101716A3 (en) * | 2010-02-19 | 2012-06-14 | Council Of Scientific And Industrial Research | A device for roof support of underground mine/tunnel |
-
1958
- 1958-10-24 GB GB3413658A patent/GB900592A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011101716A3 (en) * | 2010-02-19 | 2012-06-14 | Council Of Scientific And Industrial Research | A device for roof support of underground mine/tunnel |
| CN102844523A (en) * | 2010-02-19 | 2012-12-26 | 科学与工业研究会 | A device for roof support of underground mine/tunnel |
| CN102844523B (en) * | 2010-02-19 | 2014-09-24 | 科学与工业研究会 | A device for roof support of underground mine/tunnel |
| US9267375B2 (en) | 2010-02-19 | 2016-02-23 | Council Of Scientific & Industrial Research | Device for roof support of underground mine/tunnel |
| AU2011216967B2 (en) * | 2010-02-19 | 2016-10-20 | Council Of Scientific & Industrial Research | A device for roof support of underground mine/tunnel |
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