GB762667A - A wedge for use in connections for girders for supporting mine roofs - Google Patents
A wedge for use in connections for girders for supporting mine roofsInfo
- Publication number
- GB762667A GB762667A GB2237053A GB2237053A GB762667A GB 762667 A GB762667 A GB 762667A GB 2237053 A GB2237053 A GB 2237053A GB 2237053 A GB2237053 A GB 2237053A GB 762667 A GB762667 A GB 762667A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cotter
- wedge
- girders
- connections
- held
- 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
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B15/00—Wheels or wheel attachments designed for increasing traction
- B60B15/26—Auxiliary wheels or rings with traction-increasing surface attachable to the main wheel body
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/26—Snap-action arrangements depending upon deformation of elastic members
- H01H13/36—Snap-action arrangements depending upon deformation of elastic members using flexing of blade springs
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)
- Clamps And Clips (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Bridges Or Land Bridges (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Winding, Rewinding, Material Storage Devices (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEE7081A DE1035602B (de) | 1952-08-13 | 1952-08-13 | Schaleisen |
DEV13270A DE1043256B (de) | 1952-08-13 | 1952-08-13 | Keil fuer die gelenkige Verbindung von Kappen |
DEV14000A DE1110590B (de) | 1952-08-13 | 1958-03-06 | Kappenverbindung fuer den Grubenausbau |
Publications (1)
Publication Number | Publication Date |
---|---|
GB762667A true GB762667A (en) | 1956-12-05 |
Family
ID=42830343
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2237053A Expired GB762667A (en) | 1952-08-13 | 1953-08-13 | A wedge for use in connections for girders for supporting mine roofs |
GB1167356A Expired GB762750A (en) | 1952-08-13 | 1953-08-13 | A wedge for use in connections for girders supporting mine roofs |
GB794859A Expired GB862783A (en) | 1952-08-13 | 1959-03-06 | Improvements in or relating to mine roof support bars and to connecting means thereof |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1167356A Expired GB762750A (en) | 1952-08-13 | 1953-08-13 | A wedge for use in connections for girders supporting mine roofs |
GB794859A Expired GB862783A (en) | 1952-08-13 | 1959-03-06 | Improvements in or relating to mine roof support bars and to connecting means thereof |
Country Status (5)
Country | Link |
---|---|
BE (1) | BE576433A (fr) |
DE (3) | DE1043256B (fr) |
FR (3) | FR1082249A (fr) |
GB (3) | GB762667A (fr) |
NL (1) | NL90361C (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1186014B (de) * | 1960-07-04 | 1965-01-28 | Heinrich Pierburg Fa | Vorpfaendgelenkkappe, insbesondere fuer den Strebausbau |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE502676A (fr) * | ||||
FR993340A (fr) * | 1951-04-23 | 1951-11-12 | Bochumer Eisen Heintzmann | Dispositif de soutènement pour exploitations minières par taille |
-
1952
- 1952-08-13 DE DEV13270A patent/DE1043256B/de active Pending
- 1952-08-13 DE DEE7081A patent/DE1035602B/de active Pending
-
1953
- 1953-08-11 FR FR1082249D patent/FR1082249A/fr not_active Expired
- 1953-08-13 GB GB2237053A patent/GB762667A/en not_active Expired
- 1953-08-13 GB GB1167356A patent/GB762750A/en not_active Expired
- 1953-12-02 FR FR66328D patent/FR66328E/fr not_active Expired
-
1954
- 1954-01-06 NL NL184122A patent/NL90361C/xx active
-
1958
- 1958-03-06 DE DEV14000A patent/DE1110590B/de active Pending
-
1959
- 1959-03-06 GB GB794859A patent/GB862783A/en not_active Expired
- 1959-03-06 FR FR788582A patent/FR1218277A/fr not_active Expired
- 1959-03-06 BE BE576433D patent/BE576433A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
DE1043256B (de) | 1958-11-13 |
GB862783A (en) | 1961-03-15 |
FR1218277A (fr) | 1960-05-10 |
DE1110590B (de) | 1961-07-13 |
FR1082249A (fr) | 1954-12-28 |
FR66328E (fr) | 1956-06-29 |
NL90361C (fr) | 1959-03-16 |
GB762750A (en) | 1956-12-05 |
BE576433A (fr) | 1959-03-31 |
DE1035602B (de) | 1958-08-07 |
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