ISBN: 9781130123760

RareBooksClub. Paperback. New. This item is printed on demand. Paperback. 240 pages. Dimensions: 9.7in. x 7.4in. x 0.5in.This historic book may have numerous typos and missing text. Pur… More...

RareBooksClub. Paperback. New. This item is printed on demand. Paperback. 240 pages. Dimensions: 9.7in. x 7.4in. x 0.5in.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. 1886 Excerpt: . . . production of ordinary power with economy, and he saw no way of obtaining it, except by concentrating the apparatus in such a way, that the gas-engine dynamo machine and lamp should constitute a gas-burner, which could be handled by one man. There were many points on which he had not attempted to give a positive opinion, but there was one point on which he had given a rather positive opinion--an opinion that had been held by others for some time--namely, that it was desirable to employ a large apparatus for electric light. The fact was that there was;v difference of opinion in the matter. British engineers had long been in favour of the larger apparatus; French engineers had been in favour of the small apparatus; but he ventured to say that the English engineers would be proved to be right, and French engineers would come round to their opinion. Messrs. Crossley had kindly exhibited their 1-HP. gas-engine, and the Edison and Swan Company had lent a small dynamo machine, manufactured by Messrs. Mather and Piatt, from which it would be seen that the space occupied was very small; and there was no reason why tho machinery should not be placed immediately beneath the lantern. Correspondence. Messrs. Barmer and Fenestre stated, that their views were in Messrs. Barbier complete accordance with those of English engineers as to the and lenestredimensions that should be given to the apparatus of electrical lighthouses. Like them they preferred apparatus of the largest diameter, such as had been adopted at Macquarie and at Tino. With apparatus of this size, it was possible to distribute the light over the surface of the sea to be illuminated, with great precision, and to draw therefrom Ihe best effect. The Author recognized tho advantage, for certain isolated lighth. . . This item ships from La Vergne,TN., RareBooksClub<