US Patent: 1,187,628
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| Rotary Pump
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Patentee:
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| Israel J. Johnson (exact or similar names) - Redding, Shasta County, CA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Aug. 16, 1915 |
| Granted: |
Jun. 20, 1916 |
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Joel Havens
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Description: |
| Abstract:
This invention relates to a rotary pump and particularly to improvements on Patent #1,143,200, entitled rotary pump, issued to Harry McClelland and myself, June 15, 1915.
By actual practice and operation of the pump described in Patent #1,143,200, it was found that the efficiency of same was materially decreased by end thrust and unnecessary friction caused by leakage water passing by the vanes into .the hollow chamber of the rotor.
The object of the present invention is to overcome this defect by providing a relief passage through which the leakage water entering the hollow rotor may escape and be' conveyed back to the intake or suction side of the pump.
Claims:
In a rotary pump, a pump cylinder having suction and discharge openings therein, a hollow rotor in the cylinder opened at one end and closed at the other, a series of roller bearing chambers formed in the rotor and opening through the opened end of the latter, roller journals mounted in the chambers, impeller blades slidable through the roller journals, a retaining ring secured to the rotor across the opened end of the bearing chambers to hold the roller journals therein, and a head at each end of the cylinder having an annular flange for engaging the periphery of the rotor, the head opposing the opened end of the rotor being provided with a passage leading, from within its annular flange to the suction opening of the cylinder.
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