. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. Fig. 5. Fig. 5 is a perspective view of Mr. Nasmyth's "Comfortable Telescope;" C is a cast-iron turn-table, which, on being moved round, carries with it the entire instrument, and the oliserver, who, seated in a comfortable chair, has complete control of the elevation and round-about motion; the former by means of a tan- gent screw and wheel, F, the latter by tangent screw and pinion- shaft, E, which commands the roundabout or azimuth motion. An eye-piece is placed
. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. Fig. 5. Fig. 5 is a perspective view of Mr. Nasmyth's "Comfortable Telescope;" C is a cast-iron turn-table, which, on being moved round, carries with it the entire instrument, and the oliserver, who, seated in a comfortable chair, has complete control of the elevation and round-about motion; the former by means of a tan- gent screw and wheel, F, the latter by tangent screw and pinion- shaft, E, which commands the roundabout or azimuth motion. An eye-piece is placed convenient to the eye of the observer at C. Some idea may be formed of the facility w'ith which the movements can be controlled, wlien it is stated that within two minutes iAIr. Nasmyth has frequently directed this large instrument to nine diflferent objects situated in various parts of the heavens. Mr. Nasmyth, at the request of the president of the Section, gave some description of his mode of securing perfectly sound castings of specula for such large instruments, of wbich we hope to furnish our readers some account in our next number. On a Patent Steam Plough. By James Usheb. Mb. Ushek described his Patent Steam Plough, and stated that many fruitless attempts had been made to cultivate the land by steam-power, the reason of which had been that the parties had proceeded on an entirely erroneous principle; as, from the method they have pursued, they could never get the machine to proceed alonj;' the land. Tliis can be simply explained by stating that all former 44. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original London : [William Laxton]
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Keywords: ., boo, bookcentury1800, booksubjectarchitecture, booksubjectscience
