GB563036A - Improvements in or relating to pit props - Google Patents
Improvements in or relating to pit propsInfo
- Publication number
- GB563036A GB563036A GB119943A GB119943A GB563036A GB 563036 A GB563036 A GB 563036A GB 119943 A GB119943 A GB 119943A GB 119943 A GB119943 A GB 119943A GB 563036 A GB563036 A GB 563036A
- Authority
- GB
- United Kingdom
- Prior art keywords
- prop
- sleeve
- members
- relating
- pit
- 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
- E21D15/02—Non-telescopic props
- E21D15/06—Non-telescopic props with parts joined by a lock, with or without slight axial adjustability
- E21D15/12—Non-telescopic props with parts joined by a lock, with or without slight axial adjustability with locking devices located near head or foot
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)
- Pivots And Pivotal Connections (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
563,036. Mine props. EADIE, J. Jan. 23, 1943, No. 1199. [Class 20 (ii)] A pit-prop of the type comprising axially aligned members B formed with inclined abutting faces and a sleeve C surrounding the joint to maintain the prop in erected position, has the sleeve of larger diameter than the prop and provided with a side recess E having an inclined base into which the upper prop member can slide when the sleeve is lowered. The sleeve is maintained in its upper position by a pin F, and the parts of the prop are loosely joined together by pins or studs in the sleeve engaging the channels of the H -section members constituting the prop members.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB119943A GB563036A (en) | 1943-01-23 | 1943-01-23 | Improvements in or relating to pit props |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB119943A GB563036A (en) | 1943-01-23 | 1943-01-23 | Improvements in or relating to pit props |
Publications (1)
Publication Number | Publication Date |
---|---|
GB563036A true GB563036A (en) | 1944-07-26 |
Family
ID=9717878
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB119943A Expired GB563036A (en) | 1943-01-23 | 1943-01-23 | Improvements in or relating to pit props |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB563036A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3141370A1 (en) * | 1981-10-17 | 1983-04-28 | Klein, Schanzlin & Becker Ag, 6710 Frankenthal | Non-return valve |
-
1943
- 1943-01-23 GB GB119943A patent/GB563036A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3141370A1 (en) * | 1981-10-17 | 1983-04-28 | Klein, Schanzlin & Becker Ag, 6710 Frankenthal | Non-return valve |
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