GB983268A - Fluid-pressure operated apparatus - Google Patents
Fluid-pressure operated apparatusInfo
- Publication number
- GB983268A GB983268A GB38396/62A GB3839662A GB983268A GB 983268 A GB983268 A GB 983268A GB 38396/62 A GB38396/62 A GB 38396/62A GB 3839662 A GB3839662 A GB 3839662A GB 983268 A GB983268 A GB 983268A
- Authority
- GB
- United Kingdom
- Prior art keywords
- jack
- line
- valve
- leading
- jacks
- 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
- 239000011435 rock Substances 0.000 abstract 2
- 230000000712 assembly Effects 0.000 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
- 239000003245 coal Substances 0.000 abstract 1
- 239000012530 fluid Substances 0.000 abstract 1
- 238000005065 mining Methods 0.000 abstract 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F13/00—Transport specially adapted to underground conditions
- E21F13/08—Shifting conveyors or other transport devices from one location at the working face to another
- E21F13/086—Armoured conveyors 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
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
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)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
- Framework For Endless Conveyors (AREA)
Abstract
983,268. Advancing mine roof supports. DOWTY MINING EQUIPMENT Ltd. Oct. 2, 1963 [Oct. 10, 1962], No. 38396/62. Heading F1P. Each of a series of hydraulic jacks 9 Fig. 1 serves to advance a portion of a conveyer 1 towards the coal face 2 and are so arranged that after operation of the first jack 9 the remainder are sequentially operated by the attainment of a predetermined operating condition, e.g., degree of extension or pressure developed of the preceding jack. One end of each jack cylinder 36 Fig. 4 is pivoted at 11 to the sole beam 5 of a prop assembly 4 whilst the other end is enclosed by a sleeve 12 having a closed end against which the jack rod 13 pushes. Each sole beam also carries a single acting jack 7 by which the beam is pulled towards the face 2; props 6 having been released. Each assembly4 having a jack 9 is accompanied by two other assemblies with jacks 7 but without jacks 9. An assembly of valve units A-D Fig. 3 control fluid to and from jacks 7, 9 through a supply line 15 and return line 16 and units E, F control props 6. In operation and to advance the first jack 9 pressure is admitted through a line 28 to valve B which pivots a lever 25 counterclockwise to open valve A and allow pressure to reach a line 34 leading to the pushing side of said first jack 9. A valve 45 is opened by a predetermined pressure rise on the pushing side of jack 9 and connects line 34 with a second line 28 leading to the valve B of the second jack 9 which when advanced opens an associated valve 45 thereby connecting line 34 with a third line 28 leading to the valve B of the next jack 9 and so on. When all the jacks have been advanced the props 6 of each group of roof supports 4 are released in turn, jacks 7 actuated thereby pulling supports 4 towards the conveyer, jack 9 is retracted and the props re-set. To this end pressure is admitted to a pilot line 23 leading to a valve unit C which rocks lever 26 clockwise to operate valve D thereby connecting supply line 15 to a line 35 leading to the pulling side of jack 7 and to retracting side of jack 9. Line 35 is also connected to valve F which rocks a lever 27 clockwise to open valve E and connect supply line 15 to a line 31 leading to a valve 32 in the pilot line 23 and which is thus opened to allow access of pressure in line 23 to the valve C of the next assembly.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB38396/62A GB983268A (en) | 1962-10-10 | 1962-10-10 | Fluid-pressure operated apparatus |
| US314132A US3241654A (en) | 1962-10-10 | 1963-10-07 | Mining apparatus with automatically advancing jacks |
| FR950146A FR1371071A (en) | 1962-10-10 | 1963-10-10 | Advance mechanism of a conveyor along the working face of a mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB38396/62A GB983268A (en) | 1962-10-10 | 1962-10-10 | Fluid-pressure operated apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB983268A true GB983268A (en) | 1965-02-17 |
Family
ID=10403204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB38396/62A Expired GB983268A (en) | 1962-10-10 | 1962-10-10 | Fluid-pressure operated apparatus |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US3241654A (en) |
| GB (1) | GB983268A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1023125A (en) * | 1963-07-22 | 1966-03-16 | Dowty Mining Equipment Ltd | Mining apparatus |
| US3333426A (en) * | 1964-04-11 | 1967-08-01 | Gullick Ltd | Self-advancing hydraulically extensible mine roof supports |
| DE3318641A1 (en) * | 1982-12-22 | 1984-06-28 | Gewerkschaft Eisenhütte Westfalia, 4670 Lünen | DEVICE FOR CONTROLLING THE SLIDING CAP CYLINDER HYDRAULIC SCREW REMOVAL UNITS |
| FR2576059A2 (en) * | 1982-12-22 | 1986-07-18 | Gewerk Eisenhuette Westfalia | Device for controlling the jacks of sliding cappings of units for hydraulic self-advancing supports |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB816702A (en) * | 1955-04-04 | 1959-07-15 | Dowty Mining Equipment Ltd | Improvements relating to hydraulic apparatus for mining machinery |
| DE922583C (en) * | 1942-12-13 | 1955-01-20 | Gerhard Werner | Method and device for laying face lifting equipment and / or face building components |
| US3120105A (en) * | 1959-09-25 | 1964-02-04 | Coal Industry Patents Ltd | Self-advancing mine roof supports |
-
1962
- 1962-10-10 GB GB38396/62A patent/GB983268A/en not_active Expired
-
1963
- 1963-10-07 US US314132A patent/US3241654A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US3241654A (en) | 1966-03-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3309880A (en) | Mining apparatus | |
| GB967164A (en) | Mine roof support systems | |
| US3301136A (en) | Advanceable roof support assemblies | |
| GB983268A (en) | Fluid-pressure operated apparatus | |
| US3217603A (en) | Mining apparatus | |
| US3272084A (en) | Roof support assemblies suitable for use in mines | |
| US3306050A (en) | Mine roof support | |
| GB786331A (en) | Improvements in mine roof supports | |
| GB1046269A (en) | Advanceable roof support assembly | |
| US3228302A (en) | Roof support assembly | |
| GB823128A (en) | Improvements in and relating to mine roof support systems | |
| GB1131356A (en) | Shifting device for longwall conveyors | |
| GB1114006A (en) | Roof support assembly suitable for use in mines | |
| GB991011A (en) | Roof support assembly | |
| FR1268264A (en) | Improvements to self-advancing supports for mine roofs | |
| US3217605A (en) | Mining apparatus | |
| US3228199A (en) | Mining apparatus | |
| US3381581A (en) | Roof support assembly having electrically operated signalling means | |
| US3127748A (en) | Mine roof supports | |
| GB1202358A (en) | Mine roof support systems | |
| US3217608A (en) | Mining apparatus | |
| GB990837A (en) | Roof support assembly | |
| GB1112647A (en) | Roof support assembly suitable for use in mines | |
| US3319529A (en) | Advanceable roof support assemblies | |
| US3357313A (en) | Roof support assemblies suitable for use in mines |