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Scientific American, Vol. 93, No. 8 (1905) (1905)

leaf 3

An illustration from Scientific American, Vol. 93, No. 8 (1905), 1905, leaf 3
The water enters in the suction elbow on the shaft The first attempt ever made in the State of Oregon to side of the pump case. At that end the pressure is is an 18-inch five-step centrifugal, weighing over exploit an extensive gold placer deposit by artificial only that which can be created by… … exact geometrical progression. object of damming the river in higher This particular pump was built with altitudes and conveying water to the de- curely anchored to a concrete foundation, 4 feet in the view of limiting the speed to 360 revolutions depth. The main pipeline from the pump is 1,500 in…

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