GB981619A - Hydraulic prop - Google Patents
Hydraulic propInfo
- Publication number
- GB981619A GB981619A GB4068261A GB4068261A GB981619A GB 981619 A GB981619 A GB 981619A GB 4068261 A GB4068261 A GB 4068261A GB 4068261 A GB4068261 A GB 4068261A GB 981619 A GB981619 A GB 981619A
- Authority
- GB
- United Kingdom
- Prior art keywords
- prop
- nov
- see
- hydraulic prop
- hydraulic pit
- 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
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/14—Telescopic props
- E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/58—Devices for setting props or chocks
- E21D15/585—Devices for setting props or chocks by means of hydraulically operated devices for mechanical props, or hydraulic props in which the hydraulic part is not important
- E21D15/586—Devices for setting props or chocks by means of hydraulically operated devices for mechanical props, or hydraulic props in which the hydraulic part is not important the props being pre-loaded
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Safety Valves (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
981,619. Hydraulic pit props. SOC. D' APPLICATIONS GENERALES D'ELECTRICITE ET DE MECANIQUE SAGEM. Nov. 14, 1961 [Nov. 22, 1960], No. 40682/61. Heading E1E. An hydraulic pit prop is provided with a combined charging and release valve 14, 15, 22 adapted to be held in the discharge position by a chain-operated lever 21 which is releasably positioned on the prop to permit attachment of a pressure line, see Fig. 4 (not shown) a calibrated pressure-relief valve being disposed in the roof cap, see Fig. 2 (not shown).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR844641A FR1280684A (en) | 1960-11-22 | 1960-11-22 | hydraulic prop |
Publications (1)
Publication Number | Publication Date |
---|---|
GB981619A true GB981619A (en) | 1965-01-27 |
Family
ID=8743198
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4068261A Expired GB981619A (en) | 1960-11-22 | 1961-11-14 | Hydraulic prop |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE610401A (en) |
DE (1) | DE1199218B (en) |
FR (1) | FR1280684A (en) |
GB (1) | GB981619A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2474112A1 (en) * | 1980-01-21 | 1981-07-24 | Commercial Shearing | LONG-HOLE CYLINDER THAT CAN SERVE MINE ROOF SUPPORT |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1243610B (en) * | 1964-07-09 | 1967-07-06 | Hermann Schwarz Kommanditgesel | Pressure-operated pit stamp |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1685697A (en) * | 1926-07-30 | 1928-09-25 | Nathan M Guinsburg | Jack |
BE486663A (en) * | 1948-01-12 | |||
DE809903C (en) * | 1948-08-25 | 1951-08-02 | Mavor & Coulson Ltd | Hydraulic ram for mining operations |
DE924142C (en) * | 1951-04-08 | 1955-02-28 | Ringfeder Gmbh | Pit stamp |
DE919525C (en) * | 1951-05-01 | 1954-10-25 | Gullick Ltd | Hydraulic pit ram |
GB700790A (en) * | 1951-07-19 | 1953-12-09 | Dowty Auto Units Ltd | Improvements relating to valves |
GB767561A (en) * | 1952-07-15 | 1957-02-06 | Gullick Ltd | Improvements in or relating to mining chocks and the like |
BE526791A (en) * | 1953-02-25 | |||
DE1062654B (en) * | 1956-04-03 | 1959-08-06 | Kloeckner Bergbau Viktor Icker | Hydraulic pit ram |
GB891624A (en) * | 1958-01-02 | 1962-03-14 | Dowty Mining Equipment Ltd | Valves suitable for use as air breather valves in pit props |
-
1960
- 1960-11-22 FR FR844641A patent/FR1280684A/en not_active Expired
-
1961
- 1961-09-30 DE DES76107A patent/DE1199218B/en active Pending
- 1961-11-14 GB GB4068261A patent/GB981619A/en not_active Expired
- 1961-11-16 BE BE610401A patent/BE610401A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2474112A1 (en) * | 1980-01-21 | 1981-07-24 | Commercial Shearing | LONG-HOLE CYLINDER THAT CAN SERVE MINE ROOF SUPPORT |
Also Published As
Publication number | Publication date |
---|---|
DE1199218B (en) | 1965-08-26 |
BE610401A (en) | 1962-03-16 |
FR1280684A (en) | 1962-01-08 |
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