GB778914A - Improvements in or relating to chock release devices for pit chocks and the like - Google Patents
Improvements in or relating to chock release devices for pit chocks and the likeInfo
- Publication number
- GB778914A GB778914A GB1560054A GB1560054A GB778914A GB 778914 A GB778914 A GB 778914A GB 1560054 A GB1560054 A GB 1560054A GB 1560054 A GB1560054 A GB 1560054A GB 778914 A GB778914 A GB 778914A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chocks
- pit
- relating
- release devices
- catch
- 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
- 241000692870 Inachis io Species 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
- E21D15/60—Devices for withdrawing props or chocks
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)
- Handcart (AREA)
Abstract
778,914. Mine chocks. NEWCASTLE COLLIERY EQUIPMENT, Ltd., and PEACOCK, T. May 23, 1955 [May 26, 1954], No. 15600/54. Class 20(2) A release for mine chocks com- (prises a top part 14 adapted to be released from an inclined plane 17 on a lower part 11 by means of a catch 19 which is moved downwards when a bar 21 is moved horizontally to disengage an abutment 23 from the catch. The catch is on an arm pivoted on a bolt 27 between. the channels 12, 13 forming the chock release.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1560054A GB778914A (en) | 1954-05-26 | 1954-05-26 | Improvements in or relating to chock release devices for pit chocks and the like |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1560054A GB778914A (en) | 1954-05-26 | 1954-05-26 | Improvements in or relating to chock release devices for pit chocks and the like |
Publications (1)
Publication Number | Publication Date |
---|---|
GB778914A true GB778914A (en) | 1957-07-17 |
Family
ID=10062045
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1560054A Expired GB778914A (en) | 1954-05-26 | 1954-05-26 | Improvements in or relating to chock release devices for pit chocks and the like |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB778914A (en) |
-
1954
- 1954-05-26 GB GB1560054A patent/GB778914A/en not_active Expired
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