File:Notes on torpedoes, offensive and defensive (1872) (14788850633).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

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
nd he mightthrow down the shutter by hand. If a system of firing by intersection, combined in thisway with a self-acting system, were used, the observing-stations would frequently be some distance from the testing-room; they (theobserving-stations) ought to be, if possible,wTell clear of the smoke of guns in action, while the testing-room ought to be within a fort and in a bomb-proof case-mate, well covered from an enemys direct and vertical fire.It ought not, in point of fact, to present any opening in thedirection of the enemys guns. There would, however, beno difficulty in arranging a combined system under suchconditions, either for the circuit closing or breaking system.Arrangement of The shutter-signaling apparatus may be conveniently shutter-signaling , . , ,. --i i i • j_ • >i apparatus in box. arranged in a compact form, with a long box to contain thecoils, which box should be made to shut up and lock, toprevent interference by unauthorized persons. The battery Fig. 99.
Text Appearing After Image:
235 terminals, brass plates, plugs, &c, should be placed ou aboard in front and outside the box itself, so as to be acces-sible at all times. The coils of the electro-magnets may beconveniently placed side by side: in this way six coils,with their necessary terminals, brass connecting-plates, &c,would occupy a space of 30 inches in length, 9 inches inbreadth, and 7 inches in height. The bell would stand 6inches high over the top of the center of the box. A form of testing and firing table has been designed in . wooimch-test- 00 ° ing and firing ta the chemical department, Woolwich, adapted for a self-acting ble-system of mines, the general arrangement of which is shownin Fig. 99. The electric cables, in connection with themines, having been brought into the fort, are each attachedto a series of screw-plugs, inserted into perforated metalplates insulated by ebonite rings (a a a, &c.,) which latterare numbered to correspond with the number of the mineor system of mines to w

Note About Images