GB709241A - Improvements relating to cap shoes for mine roof supports - Google Patents
Improvements relating to cap shoes for mine roof supportsInfo
- Publication number
- GB709241A GB709241A GB5535/52A GB553552A GB709241A GB 709241 A GB709241 A GB 709241A GB 5535/52 A GB5535/52 A GB 5535/52A GB 553552 A GB553552 A GB 553552A GB 709241 A GB709241 A GB 709241A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bar
- mine roof
- shoe
- improvements relating
- screw
- 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)
- Bridges Or Land Bridges (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
709,241. Mine roof supporting bars. DIRECTIE VAN DE STAATSMIJNEN IN LIMBURG. March 3, 1952 [March 7, 1951], No. 5535/52. Class 20 (2) One mine roof supporting bar 7 is pivotally connected by pin 6 and hole 3 to another bar 1 and is supported therefrom by a bar shoe 8 rockably suspended by hooks 9 engaging a pin 4 on the bar 1, the shoe 8 having a thrust screw 10 adapted to bear against the lower flange of the bar 1 for adjusting the relative angular positions of the bars. Alternatively the screw 10 may be arranged at a point in the shoe 8 to press directly against the bar 7 and the screw head arranged to take a reaction from the bar 1. Specification 709,240 is referred to.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL709240X | 1951-03-07 | ||
| NL760654X | 1953-10-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB709241A true GB709241A (en) | 1954-05-19 |
Family
ID=31980708
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5535/52A Expired GB709241A (en) | 1951-03-07 | 1952-03-03 | Improvements relating to cap shoes for mine roof supports |
| GB5534/52A Expired GB709240A (en) | 1951-03-07 | 1952-03-03 | Improvements relating to roof supporting structures, as used in mines |
| GB30683/54A Expired GB760654A (en) | 1951-03-07 | 1954-10-25 | Improvements in and relating to mine roof supporting structures |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5534/52A Expired GB709240A (en) | 1951-03-07 | 1952-03-03 | Improvements relating to roof supporting structures, as used in mines |
| GB30683/54A Expired GB760654A (en) | 1951-03-07 | 1954-10-25 | Improvements in and relating to mine roof supporting structures |
Country Status (4)
| Country | Link |
|---|---|
| BE (3) | BE532795A (en) |
| FR (3) | FR1051786A (en) |
| GB (3) | GB709241A (en) |
| NL (4) | NL159679A (en) |
-
0
- NL NLAANVRAGE7206200,A patent/NL182433B/en unknown
- BE BE509661D patent/BE509661A/xx unknown
- NL NL6811291.A patent/NL159680B/en unknown
- BE BE509662D patent/BE509662A/xx unknown
- BE BE532795D patent/BE532795A/xx unknown
- NL NL89595D patent/NL89595C/xx active
- NL NL159679D patent/NL159679A/xx unknown
-
1952
- 1952-02-23 FR FR1051786D patent/FR1051786A/en not_active Expired
- 1952-02-28 FR FR1051869D patent/FR1051869A/en not_active Expired
- 1952-03-03 GB GB5535/52A patent/GB709241A/en not_active Expired
- 1952-03-03 GB GB5534/52A patent/GB709240A/en not_active Expired
-
1954
- 1954-10-25 GB GB30683/54A patent/GB760654A/en not_active Expired
- 1954-10-26 FR FR67282D patent/FR67282E/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| FR67282E (en) | |
| NL182433B (en) | |
| NL159679A (en) | |
| NL159680B (en) | |
| NL89595C (en) | |
| BE509661A (en) | |
| FR1051786A (en) | 1954-01-19 |
| GB760654A (en) | 1956-11-07 |
| BE509662A (en) | |
| FR1051869A (en) | 1954-01-19 |
| GB709240A (en) | 1954-05-19 |
| BE532795A (en) |
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