File:Notes on torpedoes, offensive and defensive (1872) (14745931996).jpg

Identifier: notesontorpedoes00stot (find matches)
Title: Notes on torpedoes, offensive and defensive
Year: 1872 (1870s)
Authors: Stotherd, Richard Hugh, 1828-1895. (from old catalog)
Subjects: Torpedoes Submarine mines
Publisher: Washington, Govt. Print. Off.
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

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f the Le-clanche battery being said to be equal to 40 of Daniells.Its internal (or liquid) resistance is also said to be very small. It has been adopted by the chemius de fer de lEst, deFOuest, du Eord, de Paris, and Lyons a la Mediterranee, andin the former is said to have been tried for ten monthswith very excellent results. The advantages claimed for it are, absence of chemicalaction when the battery circuit is not complete, and con-sequently no waste of material; it requires little or no look-ing after$ the cost of maintenance is small; it cannot beinjured by mixing or upsetting the liquids; the battery,ready for action, may be placed in store without deteriora-tion or loss in its component parts; and it possesses greatfacility for transport, without injury to the working powers. This battery seems to possess qualities which may ren-der it useful as an agent for submarine mining purposes,and experiments should be made with it in order to ascer-tain its advantages for this purpose.
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183 For boat service, a voltaic pile has been devised by F. voltaic pile.Abel, esq., F. R. S. It is described as follows in the reportof the committee on active obstructions : This batter y-cousists of a series of pairs of zinc and copper *? x.te™ p orized •- A L voltaic pile. disks, or square plates, each pair being separated by a pieceof flannel ot corresponding size, steeped in a saturatedsolution of salfc acidified with a little vinegar, the pairs beingarranged in four x^iles, connected by strips of metal witheach other, and confined between two boards in such a man-ner that they afford the means of pressing the disks com-pactly together. The most efficient form of this battery isconstructed as follows : ilA piece of hard, dry wood, (a,) Fig. 77, about 7£ inches construction.square and 1 inch thick, is well lacquered or varnished onits upper surface, or coated with a mixture of gutta-perchaand pitch, or of bees-wax, rosin, and pitch. A wooden rod,2 of an inch in diameter and

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