Abstract
THIS treatise gives a good account, both historical and scientific, of cable manufacture. Wire was originally made by beating metal into plates, which were then cut into strips and rounded by hammering. It is stated that the art of drawing metal through dies was probably invented in the fourteenth century, although it did not come into practical use in Great Britain before the second half of the seventeenth century. The Birmingham Wire Gauge was the first attempt to standardise sizes. The first scientific attempt was made. by Brown and Sharpe in America in 1855. The diameters of the wires they fixed form a regular geo metrical progression from the English size of No. 36 (mils) to 4/0 (460 mils). As there are 40 sizes, the common ratio is the 39 root of 92, which is 1.123 nearly. This gauge is now officially called the “American Wire Gauge.”
Electric Cables, their Design, Manufacture and Use: a Series of Lectures delivered in the Moore School of Electrical Engineering of the University of Pennsylvania.
By William A. Del Mar. Pp. vii + 208. (New York: McGraw-Hill Book Co., Inc.; London: McGraw-Hill Publishing Co., Ltd., 1924.) 12s. 6d. net.
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Electric Cables, their Design, Manufacture and Use: a Series of Lectures delivered in the Moore School of Electrical Engineering of the University of Pennsylvania . Nature 116, 204 (1925). https://doi.org/10.1038/116204c0
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DOI: https://doi.org/10.1038/116204c0