DRIVING MACHINERY BY SAND.
Ax American paper gives an interesting account of the method recently adopted by Mr. J. Townsend, of Virginia City, to run a trambar at arrastras by sand. The arrastras are placed tn a light randy field where only sufficient water for drinking purposes and to moisten the ore to be operated upon can be obtained. The sand drives a large overshot wheel, taking the place of water. It was at first Mr. Townsend’s intention to run the arrastras by means of a large windmill, but as the speed was naturally irregular, ha adopted the present method. The windmil now runs a belt containing a number of buckets, and these carry sand up to a large tank, somewhat in the way that grain elevators carry wheat. A stream of sand being let out upon ths overshot wheel causes it to revolve, just as it would under the weight of a stream of water, and thus far the method is said to have been very successful, When there is a considerable wind, sand is stored up for use when calms prevail, and in thia manner th* mills may run continuously.
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Poverty Bay Standard, Volume I, Issue 36, 10 January 1884, Page 3
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192DRIVING MACHINERY BY SAND. Poverty Bay Standard, Volume I, Issue 36, 10 January 1884, Page 3
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