GB507045A - Improvements in chocks for use in mines - Google Patents
Improvements in chocks for use in minesInfo
- Publication number
- GB507045A GB507045A GB3233438A GB3233438A GB507045A GB 507045 A GB507045 A GB 507045A GB 3233438 A GB3233438 A GB 3233438A GB 3233438 A GB3233438 A GB 3233438A GB 507045 A GB507045 A GB 507045A
- Authority
- GB
- United Kingdom
- Prior art keywords
- elements
- wedge
- recess
- naylor
- socket
- 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
- 238000010276 construction Methods 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)
- Clamps And Clips (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
507,045. Mine chocks. NAYLOR BROS., Ltd., and NAYLOR, W. Nov. 8, 1938, No. 32334. [Class 20 (ii)] A chock release comprises a pair of wedge elements each having a socket or recess for the reception of locking key, a displaceable bar motmted in one of the wedge elements being adapted to displace the key out of engagement with the recess in the other wedge element. In the construction shown, two pairs of wedge elements 1, 2, 3, 4 are provided, each of the lower elements 2, 4 being formed with a socket 7 accommodating a locking key 6 which is displaceable from or into a recess 5 in the upper elements 1, 3, by axial movement of a doublecranked bar 8 mounted in guides 9 in the lower elements. The upper wedge elements 1, 3 are preferably connected to the lower elements 2, 4 by means of chains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3233438A GB507045A (en) | 1938-11-08 | 1938-11-08 | Improvements in chocks for use in mines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3233438A GB507045A (en) | 1938-11-08 | 1938-11-08 | Improvements in chocks for use in mines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB507045A true GB507045A (en) | 1939-06-08 |
Family
ID=10336983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3233438A Expired GB507045A (en) | 1938-11-08 | 1938-11-08 | Improvements in chocks for use in mines |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB507045A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2723100A (en) * | 1951-04-13 | 1955-11-08 | Muschamp Norman James | Releasable supports for roofs in underground mines |
| US2872147A (en) * | 1952-09-05 | 1959-02-03 | Mining Engineering Co Ltd | Roof supports |
-
1938
- 1938-11-08 GB GB3233438A patent/GB507045A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2723100A (en) * | 1951-04-13 | 1955-11-08 | Muschamp Norman James | Releasable supports for roofs in underground mines |
| US2872147A (en) * | 1952-09-05 | 1959-02-03 | Mining Engineering Co Ltd | Roof supports |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB507045A (en) | Improvements in chocks for use in mines | |
| GB319907A (en) | Improved means for sustaining pit props and similar supports and for facilitating their safe withdrawal | |
| GB530074A (en) | A tool for locking split cotter pins | |
| GB668607A (en) | Arrangement for attaching a drill crown to a drill steel or drill steels to each other | |
| GB270611A (en) | Improvements in or relating to earth-retaining structures for use in mines | |
| GB276496A (en) | Lining of mine galleries | |
| GB500259A (en) | Improvements in or relating to pit props | |
| GB413474A (en) | Improvements in or relating to mine chocks | |
| GB419939A (en) | Improved means for releasing or collapsing mine chocks and the like | |
| GB541395A (en) | Improvements in or relating to wedge block supports particularly for use in coal andlike mines | |
| GB722202A (en) | Improvements in lagging members for mine galleries and the like | |
| GB662208A (en) | Improvements in arrangements of walls, consisting of prefabricated blocks | |
| GB359185A (en) | Improvements relating to pit props | |
| GB333599A (en) | An improved prop for use in mines and like purposes | |
| GB310244A (en) | Improvements in, and relating to, apparatus for breaking down coal and the like | |
| GB337283A (en) | Improvements relating to pit props | |
| GB549968A (en) | Improvements in or relating to protective or warning tiles applicable for covering underground cables and the like | |
| GB536346A (en) | Improvements in pit props, mine chocks and the like devices | |
| GB909275A (en) | End to end connection for bars, especially mine roof bars | |
| GB718352A (en) | Improvements in or relating to bars for supporting mine roofs or the like | |
| GB735363A (en) | Improvements in and relating to support bars or cap pieces for mines and other uses | |
| GB277484A (en) | Improvements relating to pit props | |
| GB777477A (en) | A new or improved chock release for supports for mine roofs | |
| GB369732A (en) | A new or improved pit prop | |
| GB768719A (en) | A new or improved chock release for supports for mine roofs |