GB797663A - Apparatus for testing pit-props - Google Patents
Apparatus for testing pit-propsInfo
- Publication number
- GB797663A GB797663A GB1080154A GB1080154A GB797663A GB 797663 A GB797663 A GB 797663A GB 1080154 A GB1080154 A GB 1080154A GB 1080154 A GB1080154 A GB 1080154A GB 797663 A GB797663 A GB 797663A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tub
- pillars
- pressure
- prop
- april
- 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
- 238000012986 modification Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 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
- E21D15/46—Telescopic props with load-measuring devices; with alarm devices
- E21D15/465—Telescopic props with load-measuring devices; with alarm devices with essential hydraulic or pneumatic details
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)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
797,663. Testing pit props. EGGEMANN, W., and CAMPENHAUSEN, E. VON, [trading as SCHWARZ KOMM.-GES., H.]. April 6, 1955 [April 13, 1954], No. 10801/54. Class 20(2) Apparatus for testing pit props under load in mines is mounted on a wheeled tub 11. The prop is placed between pressure plates 15, 19 and pressure exerted on it by a hydraulic pump and ram 13 mounted in a frame comprising a base 12 and head bar 18 connected by telescopically adjustable pillars 16, 17. The apparatus is mounted on an end wall of the tub which is hinged to allow the apparatus to be swung upright to rest on supports 20 for use or to be swung down on to the tub for transport. In a modification, the apparatus is used lying on its side in the tub and one side of the tub is swung down to allow access to it. Each of the telescopic parts of the pillars may be connected to one wheel axle the spacing between which thus varies with the extension of the pillars or the pillars may slide in tubular members rigid with the tub. Pressure may be exerted on the prop by electrical or other power driven device.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1080154A GB797663A (en) | 1954-04-13 | 1954-04-13 | Apparatus for testing pit-props |
DESCH16568A DE1014506B (en) | 1954-04-13 | 1954-10-22 | Testing device for pit stamp |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1080154A GB797663A (en) | 1954-04-13 | 1954-04-13 | Apparatus for testing pit-props |
Publications (1)
Publication Number | Publication Date |
---|---|
GB797663A true GB797663A (en) | 1958-07-09 |
Family
ID=9974519
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1080154A Expired GB797663A (en) | 1954-04-13 | 1954-04-13 | Apparatus for testing pit-props |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE1014506B (en) |
GB (1) | GB797663A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3413849A (en) * | 1965-12-30 | 1968-12-03 | Wortso Corp | Laboratory bedding test machine |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1078968B (en) * | 1958-04-15 | 1960-04-07 | Bochumer Ges Fuer Grubenausbau | For test device that is used for relatively displaceably tensioned arch segments |
DE3613444C2 (en) * | 1986-04-21 | 1994-03-31 | Lewin Heinz Ulrich | Device for testing pit punches |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1009964A (en) * | 1948-07-16 | 1952-06-05 | Saarlandische Brennstoff Techn | Device for producing pre-tension in mine props |
-
1954
- 1954-04-13 GB GB1080154A patent/GB797663A/en not_active Expired
- 1954-10-22 DE DESCH16568A patent/DE1014506B/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3413849A (en) * | 1965-12-30 | 1968-12-03 | Wortso Corp | Laboratory bedding test machine |
Also Published As
Publication number | Publication date |
---|---|
DE1014506B (en) | 1957-08-29 |
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