GB693978A - Improvements in mine roof supports - Google Patents
Improvements in mine roof supportsInfo
- Publication number
- GB693978A GB693978A GB16412/50A GB1641250A GB693978A GB 693978 A GB693978 A GB 693978A GB 16412/50 A GB16412/50 A GB 16412/50A GB 1641250 A GB1641250 A GB 1641250A GB 693978 A GB693978 A GB 693978A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bar
- loop
- hook
- wedge
- bars
- 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
- 229910000831 Steel Inorganic materials 0.000 abstract 2
- 239000002184 metal Substances 0.000 abstract 2
- 239000010959 steel Substances 0.000 abstract 2
- 239000003245 coal Substances 0.000 abstract 1
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D17/00—Caps for supporting mine roofs
- E21D17/02—Cantilever extension or similar protecting devices
- E21D17/08—Cap joints for obtaining a coal-face free of pit-props
- E21D17/086—Cap joints for obtaining a coal-face free of pit-props or articulated type
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D49/00—Details or constructional features not specially adapted for looms of a particular type
- D03D49/70—Devices for cutting weft threads
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)
- Textile Engineering (AREA)
- Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
- Roof Covering Using Slabs Or Stiff Sheets (AREA)
- Emergency Lowering Means (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
693,978. Mine roof supporting bars. LINSINGEN, M. VON. June 30, 1950 [July 1, 1949], No. 16412/50. Class 20 (ii). Mine roof supporting bars 1b, 1c, Fig. 1 of the type in which the bar 1c nearest the coal face is supported without a prop, are coupled end to end by means of a hook 4, Fig 4 on one bar 1c engaging a U-loop 3 on another bar 1b, a cross locking wedge 9 engaging between a part 7 of the second bar and the ho.ok end 13 to lock it in position: the hook 4 is arranged in substantially the median longitudinal plane of the bar 1c, and the loop 3 is arranged in or below the median longitudinal plane of the bar 1b, the depth of the downwardly open mouth of the hook 4 being substantially equal to the cross-sectional diameter of the loop end and the thickness of the hook 4 being not greater than the distance between the upper side of the loop 3 and the upper side of the bar 1b. As shown, the bars 1b, 1c are of box-section and the legs 6 of the loop 3 are welded to the outer vertical sides 5 of the bar 1b, the upper and lower sides being cut away. The legs 6 are joined by a bridge 7 having a cutout portion 8 for guiding the wedge 9. The hook 4, detachably secured to the bar 1c, has a broadened and curved end part 13 against which the wedge 9 is forced. 'The loop 3 may be detachably secured to the bar 1b by providing the leg ends with a projection which fits into the hollow section of the bar and is secured by a cross bolt. In this case the wedge 9 is arranged above the lower side of the bar and is guided in the loop or in a projection on the loop. The bars may be of double T-section and may be of steel or light metal or the bars may be of light metal and the coupling members (loop, hook and wedge) made of steel.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE716447X | 1951-04-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB693978A true GB693978A (en) | 1953-07-08 |
Family
ID=6626418
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB16412/50A Expired GB693978A (en) | 1951-04-23 | 1950-06-30 | Improvements in mine roof supports |
| GB10110/52A Expired GB716447A (en) | 1951-04-23 | 1952-04-22 | Improvements in or relating to mine roof supports |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB10110/52A Expired GB716447A (en) | 1951-04-23 | 1952-04-22 | Improvements in or relating to mine roof supports |
Country Status (5)
| Country | Link |
|---|---|
| BE (2) | BE496549A (en) |
| DE (1) | DE974668C (en) |
| FR (2) | FR62578E (en) |
| GB (2) | GB693978A (en) |
| NL (1) | NL79536C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2749712A (en) * | 1949-11-25 | 1956-06-12 | Gerlach Karl | Mine supporting structure for working mines |
| DE1022992B (en) * | 1951-05-15 | 1958-01-23 | Gutehoffnungshuette Sterkrade | Pit support cap with articulated connection |
| DE1057042B (en) * | 1952-05-07 | 1959-05-14 | Wilhelm Meier | Shell iron joint connection |
| LU32099A1 (en) * | 1952-05-31 | |||
| DE1039973B (en) * | 1952-08-13 | 1958-10-02 | Aloys Vanwersch | Wedge for the articulated connection of caps |
| DE1043256B (en) * | 1952-08-13 | 1958-11-13 | Aloys Vanwersch | Wedge for the articulated connection of caps |
| DE1207319B (en) * | 1964-06-06 | 1965-12-23 | Aloys Vanwersch | Cap connection for pit construction in underground operations |
-
0
- FR FR993340D patent/FR993340A/en not_active Expired
-
1949
- 1949-07-02 DE DEP47598A patent/DE974668C/en not_active Expired
- 1949-10-12 NL NL149298A patent/NL79536C/xx active
-
1950
- 1950-06-23 BE BE496549D patent/BE496549A/xx unknown
- 1950-06-30 GB GB16412/50A patent/GB693978A/en not_active Expired
-
1952
- 1952-03-11 FR FR62578D patent/FR62578E/en not_active Expired
- 1952-03-19 BE BE510061D patent/BE510061A/xx unknown
- 1952-04-22 GB GB10110/52A patent/GB716447A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL79536C (en) | 1955-11-15 |
| FR62578E (en) | 1955-06-15 |
| GB716447A (en) | 1954-10-06 |
| BE510061A (en) | 1952-09-19 |
| BE496549A (en) | 1950-12-23 |
| DE974668C (en) | 1961-03-23 |
| FR993340A (en) | 1951-11-12 |
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