GB1037915A - Improvements relating to roof supports for mine workings - Google Patents
Improvements relating to roof supports for mine workingsInfo
- Publication number
- GB1037915A GB1037915A GB2004464A GB2004464A GB1037915A GB 1037915 A GB1037915 A GB 1037915A GB 2004464 A GB2004464 A GB 2004464A GB 2004464 A GB2004464 A GB 2004464A GB 1037915 A GB1037915 A GB 1037915A
- Authority
- GB
- United Kingdom
- Prior art keywords
- prop
- pressure
- roof
- circuit
- hydraulic
- 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
- 230000003245 working effect Effects 0.000 title 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000036316 preload Effects 0.000 abstract 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/006—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices
- E21D23/0069—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices without essential advancing shifting devices
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/0047—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor without essential shifting devices
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/0052—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor with advancing shifting devices connected therewith
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Roof Covering Using Slabs Or Stiff Sheets (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
1,037,915. Fluid-pressure apparatus. K. M. GROETSCHEL. Jan. 29, 1963 [May 12, 1962; Nov. 10, 1962], No. 20044/64. Divided out of 1,037,911. Heading F1P. In a mine roof support comprising a bore, at least one hydraulic prop and a roof-engaging superstructure, the preload inserted by the latter against the roof has a series of pre-selected valves selectively determined by auxiliary means disposed externally of the prop in the hydraulic supply system therefrom. Each prop is mounted in a multi-stage telescopic chock 40, 42, 43A defining pressure chambers 44, 46 communicating by way of conduits 43, 45 with a valve controlled supply source 58, 59, pressure gauge and/or adjustable regulator valve means 61a, 67a being incorporated in the circuit as necessary. Pressure relief valves 65, 68 are disposed in the circuit as shown and the prop is additionally provided with an adjustable cap 52, 54 having a pressure chamber 56 fed from a supply line 57. For further modification and details Specifications 1,037,911, 1,037,912, 1,037,913, 1,037,914, 1,037,917 and 1,037,918 should be referred to.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEG34969A DE1230390B (en) | 1962-05-12 | 1962-05-12 | Hydraulic pit ram |
| DEG36367A DE1290506B (en) | 1962-11-10 | 1962-11-10 | Traveling extension unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1037915A true GB1037915A (en) | 1966-08-03 |
Family
ID=25978422
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2004464A Expired GB1037915A (en) | 1962-05-12 | 1963-01-29 | Improvements relating to roof supports for mine workings |
| GB2004664A Expired GB1037916A (en) | 1962-05-12 | 1963-01-29 | Improvements relating to roof supports for mine workings |
| GB2004364A Expired GB1037914A (en) | 1962-05-12 | 1963-01-29 | Improvements relating to roof supports for mine workings |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2004664A Expired GB1037916A (en) | 1962-05-12 | 1963-01-29 | Improvements relating to roof supports for mine workings |
| GB2004364A Expired GB1037914A (en) | 1962-05-12 | 1963-01-29 | Improvements relating to roof supports for mine workings |
Country Status (1)
| Country | Link |
|---|---|
| GB (3) | GB1037915A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11040512B2 (en) | 2017-11-08 | 2021-06-22 | Northrop Grumman Systems Corporation | Composite structures, forming apparatuses and related systems and methods |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2197678B (en) * | 1986-11-21 | 1990-04-11 | Gullick Dobson Ltd | Mine roof supports |
-
1963
- 1963-01-29 GB GB2004464A patent/GB1037915A/en not_active Expired
- 1963-01-29 GB GB2004664A patent/GB1037916A/en not_active Expired
- 1963-01-29 GB GB2004364A patent/GB1037914A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11040512B2 (en) | 2017-11-08 | 2021-06-22 | Northrop Grumman Systems Corporation | Composite structures, forming apparatuses and related systems and methods |
| US12083766B2 (en) | 2017-11-08 | 2024-09-10 | Northrop Grumman Systems Corporation | Composite structures, forming apparatuses and related systems and methods |
Also Published As
| Publication number | Publication date |
|---|---|
| GB1037916A (en) | 1966-08-03 |
| GB1037914A (en) | 1966-08-03 |
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