d from Fig. 4. The ap- Mr. R. N. Chamberlain, whose intelligent engineering supervision did somuch to render the boats a success the shaft, on which is keyed a chain wheel, 6b, over|paratus consists essentially of a couple of electro- at the Fair, where they carried 800,000 passengers, pro- which… … y and look out across the roofs of the city. For block On the same shaft is a spurwheel, ¢, gear- after block and mile after mile can be seen hundreds ing with a pinion which runs loose on a and thousands of escape valves pouring out volumes of second shaft above the first. On this white vapor.…
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