Abstract
ALL teachers of electrical engineering are aware of the need for a text-book on the drawing and construction of electrical apparatus. This attempt, however, to supply the need is disappointing. Apparently the author intends the book to serve for a complete course of machine drawing for electrical students, for he commences with the laws of projection and gives several very simple examples inillustration of them. He proceeds then to fastenings, cable sockets, junction-boxes, switches,anddynamos. The subject-matter is confined entirely to such apparatus as is found in small continuous-current power stations (but instrument sare not included); consequently the alternator, induction motor, oil-switch, and other important pieces of electrical apparatus are notably absent. Several complete plates are devoted to non-dimensioned sketches showing types of apparatus, e.g. one on brush-holders; a few such example sare undoubtedly useful for practice in sketching, but here too much space is occupied in this way. The drawing sare clear and very well arranged,but the descriptive matter is unnecessarily prolix. The examples given do not always represent good practice; for instance, in several places asingle-piecear mature disc is shown with a dove-tailed key, while a bearing is shown on p. 73 which would be destroyed by a little end-thrust. The book is well got up and has been prepared carefully; but the ground covered is insufficient—at the price
A Text-book on Machine Drawing for Electrical Engineers.
E.
Blythe
By. (The Cambridge Technical Series.) Pp. vii + 81. (Cambridge: At the University Press, 1920.) Price 20s. net.
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A Text-book on Machine Drawing for Electrical Engineers . Nature 105, 260 (1920). https://doi.org/10.1038/105260a0
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DOI: https://doi.org/10.1038/105260a0