here are three hoppers amidships, capable of con- rated beautifully when detached, but when required taining 1,000 tons of dredgings. to work, very little power was developed. I then The propelling machinery consists of two independ- hung a shaft, about six feet long, from supports an- ent sets of… … then, Messrs. Simons have constructed twenty-four HOW TO RUN A PUMP BY WAVE FORCE. shaft opposite the commutator is a pinion, with which vessels of the same character, ranging in capacity from engages a rack bar passing through the top of the cas- 200 to 1,300 tons. The advantages claimed for the…
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