N.E.L.A. Bulletin Volume 8, No. 1

National Electric Light Association

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1921 Excerpt: ... by the alternating current. The analogy does not end here, however, and the laws governing electricity are found to be almost interchangeable with those governing wave transmission. The apparatus is strikingly simple, robust and compact. Translated into commercial terms, that ought to mean reliability and economy both in initial and running costs. The application of wave transmission perhaps is seen in its simplest form in the rock drill. The generator may be situated at the source of power, or mounted on wheels as a self-contained unit with an electric motor. In the latter form it can be run on rails through narrow gulleys, or even tunnels, to the desired position whence the power can be transmitted along the piping to the actual scene of the drilling operation. Used in this way it is estimated that wave transmission shows a saving up to 80 per cent in overall efficiency when compared with compressed air systems. An idea of the adaptability of the new power transmission may be gathered from the fact that it is now being used or designed for riveting hammers, stamp presses, rolling mills, forging hammers, stone crushers, variable speed motors, and pile drivers. It will be seen that wave transmission can be applied to an almost unlimited extent to all forms of commercial machinery, wherever in fact rotary or reciprocating motion is required. It will doubtless be found most useful where power has to be conveyed into confined spaces, and under conditions rendering other forms of power dangerOuS.--Christian Science Monitor. Power Plant Is Completed at $100,000 Cost Pacific Gas and Electric Company Adds to Hydro-Electric Production with Unit Near Lake Spaulding A 1,000-kilowatt generating plant has just been completed near Lake Spaulding at a cost of close to $...