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Hydraulic system for harvesting machines |
| T986004 |
Hydraulic system for harvesting machines
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| Patent Drawings: | |
| Inventor: |
Stroup, et al. |
| Date Issued: |
September 4, 1979 |
| Application: |
05/939,307 |
| Filed: |
September 5, 1978 |
| Inventors: |
Krukow; Eugene J. (Cordova, IL)
Stroup; Norman G. (Orion, IL)
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| Assignee: |
International Harvester Company (Chicago, IL) |
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| U.S. Class: |
60/422; 60/484; 91/516; 91/530; 91/532 |
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| Abstract: |
an open center hydraulic system in which a pair of flow divider valves is connected in series with the system's hydraulic pump to create a parasitic pressure upstream of these flow valves and the feeder and separator clutches are controlled remotely by simple solenoid actuated two-position valves. The cylinders actuating the clutches are of sufficient size upon application of the minimum parasitic pressure to hold the clutches in a given position so that no center neutral position is necessary on the two-position valves. |
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