GB753866A - Improvements in auxiliary hydraulic gear mechanism as incorporated in mining machines - Google Patents
Improvements in auxiliary hydraulic gear mechanism as incorporated in mining machinesInfo
- Publication number
- GB753866A GB753866A GB554254A GB554254A GB753866A GB 753866 A GB753866 A GB 753866A GB 554254 A GB554254 A GB 554254A GB 554254 A GB554254 A GB 554254A GB 753866 A GB753866 A GB 753866A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- supply
- pipe
- chest
- exhaust
- 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
- 238000005065 mining Methods 0.000 title abstract 3
- 239000007788 liquid Substances 0.000 abstract 3
- 230000002441 reversible effect Effects 0.000 abstract 2
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C31/00—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam
- E21C31/12—Component parts
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
753,866. Mineral-mining apparatus. ANDERSON, BOYES & CO., Ltd. Jan. 6, 1955 [Feb. 25, 1954], No. 5542/54. Class 68(1) In a mineral-mining machine uncontrolled over-run of an implement 25, e.g., a jib or winch, driven by a reversible, hydraulically-artuated motor 23, 24 is prevented, when load is removed from the implement, by an hydraulic interlocking device 22 inserted in the supply and exhaust pipe lines 8-11 between a reversing valve 21. and Ehe motor 23, 24. The device automatically closes the exhaust line on loss of pressure in the supply line, and comprises a, chest 1. spring-biased valves 2, 3, valve-opening plungers 6, 7 and passage ways 12, 13 interconnecting the chambers containing the valves and plungers. When liquid under pressure is supplied to the chest 1 by the pipe 8 it acts directly on the valve 2 and indirectly on the valve 3 through the passage 13 and plunger 7 to cause them to lift off the valve seats and permit flow of liquid through the supply and exhaust lines. The reverse actuation occurs when liquid under pressure is supplied to the chest 1 by pipe 9. Loss of pressure in the supply pipe 8, 10 results in the valve 3 closing the exhaust line 11, 9 and vice versa.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB554254A GB753866A (en) | 1954-02-25 | 1954-02-25 | Improvements in auxiliary hydraulic gear mechanism as incorporated in mining machines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB554254A GB753866A (en) | 1954-02-25 | 1954-02-25 | Improvements in auxiliary hydraulic gear mechanism as incorporated in mining machines |
Publications (1)
Publication Number | Publication Date |
---|---|
GB753866A true GB753866A (en) | 1956-08-01 |
Family
ID=9798132
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB554254A Expired GB753866A (en) | 1954-02-25 | 1954-02-25 | Improvements in auxiliary hydraulic gear mechanism as incorporated in mining machines |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB753866A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3260165A (en) * | 1964-04-13 | 1966-07-12 | Bendix Corp | Control system |
US3273466A (en) * | 1962-09-04 | 1966-09-20 | Mccabe Powers Body Company | Single boom derrick units |
US3967532A (en) * | 1974-01-07 | 1976-07-06 | Caterpillar Tractor Co. | Forward-reverse valve for elevating scraper drive |
US4287812A (en) * | 1976-08-25 | 1981-09-08 | Shoketsu Kinzoku Kogyo Kabushiki Kaisha | Control valve |
-
1954
- 1954-02-25 GB GB554254A patent/GB753866A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3273466A (en) * | 1962-09-04 | 1966-09-20 | Mccabe Powers Body Company | Single boom derrick units |
US3260165A (en) * | 1964-04-13 | 1966-07-12 | Bendix Corp | Control system |
US3967532A (en) * | 1974-01-07 | 1976-07-06 | Caterpillar Tractor Co. | Forward-reverse valve for elevating scraper drive |
US4287812A (en) * | 1976-08-25 | 1981-09-08 | Shoketsu Kinzoku Kogyo Kabushiki Kaisha | Control valve |
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