GB1124096A - Hydraulically operated telescopic props - Google Patents
Hydraulically operated telescopic propsInfo
- Publication number
- GB1124096A GB1124096A GB42432/65A GB4243265A GB1124096A GB 1124096 A GB1124096 A GB 1124096A GB 42432/65 A GB42432/65 A GB 42432/65A GB 4243265 A GB4243265 A GB 4243265A GB 1124096 A GB1124096 A GB 1124096A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stage
- prop
- holding means
- oct
- serve
- 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
- 101100188555 Arabidopsis thaliana OCT6 gene Proteins 0.000 abstract 1
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 1
- 239000011707 mineral Substances 0.000 abstract 1
- 238000005065 mining Methods 0.000 abstract 1
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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J13/00—Covers or similar closure members for pressure vessels in general
- F16J13/02—Detachable closure members; Means for tightening closures
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Actuator (AREA)
- Food-Manufacturing Devices (AREA)
- Earth Drilling (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
1,124,096. Multi-stage pit props. GEWERKSCHAFT EISENHUTTE WESTFALIA. 6 Oct., 1965 [20 Oct., 1964; 5 March, 1965], No. 42432/65. Heading E1E. [Also in Division B8] An hydraulic telescopic - prop for mineral mining comprises an outer prop part 1, an outer stage 5, an inner stage 10 and a non- return valve 26 (shown only in Fig. 5) between the inner and outer stages 10, 5. The outer stage 5 is restrained from full extension by holding means until the inner stage 10 has contacted the load. As shown in Fig. 1 chains 3 extending from hooks 2 on the outer prop part 1 to the outer stage 5 constitute the holding means. Fig. 3a shows a prop with a brake sleeve 8 used as the holding means. Fig. 5 shows a prop wherein an annular space 17 can be used in known manner by appropriate hydraulic charging to serve as retraction aid for the outer stage 5 and to serve as the holding means.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEG41819A DE1226972B (en) | 1964-10-20 | 1964-10-20 | Hydraulic double telescopic ram |
| DEG0043012 | 1965-03-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1124096A true GB1124096A (en) | 1968-08-21 |
Family
ID=27210640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB42432/65A Expired GB1124096A (en) | 1964-10-20 | 1965-10-06 | Hydraulically operated telescopic props |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3301519A (en) |
| BE (1) | BE671064A (en) |
| DE (1) | DE1226972B (en) |
| FR (1) | FR1459137A (en) |
| GB (1) | GB1124096A (en) |
| NL (1) | NL6513272A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS481663U (en) * | 1971-06-01 | 1973-01-10 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ZA804072B (en) * | 1979-08-07 | 1981-06-24 | Dobson Park Ind | Telescoping jack |
| US5219429A (en) * | 1992-08-10 | 1993-06-15 | Shelton Bill E | Hydra-lift system |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1928533A (en) * | 1933-01-20 | 1933-09-26 | Milford T Goss | Jack |
| DE1063101B (en) * | 1956-02-20 | 1959-08-13 | Gutehoffnungshuette Sterkrade | Hydraulic pit ram |
| DE1123640B (en) * | 1957-12-23 | 1962-02-15 | Kloeckner Werke Ag | Double extendable hydraulic pit ram |
| BE607500A (en) * | 1960-09-02 | |||
| DE1149678B (en) * | 1960-09-15 | 1963-06-06 | Rheinstahl Gmbh Wanheim | Multi-stage hydraulic pit ram |
| NL274871A (en) * | 1961-02-18 | |||
| BE632029A (en) * | 1962-05-12 | |||
| BE655844A (en) * | 1963-11-29 | 1965-03-16 |
-
1964
- 1964-10-20 DE DEG41819A patent/DE1226972B/en active Pending
-
1965
- 1965-09-28 FR FR32871A patent/FR1459137A/en not_active Expired
- 1965-10-06 GB GB42432/65A patent/GB1124096A/en not_active Expired
- 1965-10-13 NL NL6513272A patent/NL6513272A/xx unknown
- 1965-10-18 US US496822A patent/US3301519A/en not_active Expired - Lifetime
- 1965-10-19 BE BE671064D patent/BE671064A/xx unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS481663U (en) * | 1971-06-01 | 1973-01-10 |
Also Published As
| Publication number | Publication date |
|---|---|
| NL6513272A (en) | 1966-04-21 |
| FR1459137A (en) | 1966-11-18 |
| BE671064A (en) | 1966-04-19 |
| US3301519A (en) | 1967-01-31 |
| DE1226972B (en) | 1966-10-20 |
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