Figure 14 – In preliminary tests the Olds Elevator was shown to
be a reliable feeder over 15 trials of foundry sand elevation, with flow rates ±5% of the average. Furthermore, 96.6% of the tests had less than 3% variability and 70% of the tests showed variation of <1%. Better results are anticipated using more accurate measuring and testing equipment and tighter controls. The elevator used for the test is a basic machine without the ideal feed hopper or features that enhance performance.
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