GB819426A - Improvements in or relating to mine roof supporting structures - Google Patents
Improvements in or relating to mine roof supporting structuresInfo
- Publication number
- GB819426A GB819426A GB181056A GB181056A GB819426A GB 819426 A GB819426 A GB 819426A GB 181056 A GB181056 A GB 181056A GB 181056 A GB181056 A GB 181056A GB 819426 A GB819426 A GB 819426A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tongue
- fork
- bar
- bars
- mine roof
- 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
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
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)
- Clamps And Clips (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
819,426. Mine roof supporting bars. GERLACH, K., and GERLACH, H. Jan. 19, 1956 [Jan. 24, 1955], No. 1810/56. Class 20(2) In a fork and tongue connection 1, 2 between the ends of mine roof bars A. B, in which the tongue 2 is forced by a wedge 5 in apertures in the pads against an abutment member 3 in order to raise the new bar B into position, the abutmen 3 is pivoted by pins 4 in the fork 1 of the already installed bar A and has flanges 12 to support the bar B which is being installed. The wedge 5 which is adapted to be driven through apertures in the fork and tongue, acts in the longitudinal direction of the bars forcing the tongue 2 against the element 3 relative movement of which is prevented by projections 10. The member 3 may be turned on its pins 4 toprovide an abutment for the tongue 2 when the bar A is used when turned through 180 degrees about its axis. The wedge which also acts as a pivot pin for the bars is held captive in one limb of the fork by ribs and grooves 9.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEG16315A DE1027620B (en) | 1955-01-24 | 1955-01-24 | Pit construction for mining operations by means of stamps and swivel caps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB819426A true GB819426A (en) | 1959-09-02 |
Family
ID=7120628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB181056A Expired GB819426A (en) | 1955-01-24 | 1956-01-19 | Improvements in or relating to mine roof supporting structures |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE1027620B (en) |
| FR (1) | FR1140235A (en) |
| GB (1) | GB819426A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1107618B (en) * | 1958-08-14 | 1961-05-31 | Gutehoffnungshuette Sterkrade | Cap joint connection for pit construction |
-
1955
- 1955-01-24 DE DEG16315A patent/DE1027620B/en active Pending
-
1956
- 1956-01-18 FR FR1140235D patent/FR1140235A/en not_active Expired
- 1956-01-19 GB GB181056A patent/GB819426A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1140235A (en) | 1957-07-17 |
| DE1027620B (en) | 1958-04-10 |
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