Book Description

Excerpt from The Museum of Science and Art, Vol. 3 Page current which arrives at a station. - 119. To make it ring the alarum. - 120. Station with two alarums. - 12l. Notice of the station transmitting and receiving signals - 122. When signals not addressed to the station the current is passed on. - 123. How to receive a despatch at the station, and stop its farther progress. - 124. How several despatches may be at the same time sent between various stations on the same line - 125. Secondary lines of wire then used - 126. Recapitulation.-127. Signals by com binations of unequal intervals of transmission and suspension. 128. Key commutator. - 129. Horological commutator for a current having equal and regular pulsations - 130. Case in which the pulsations are not continuous or regular. - 131. N 0 limit to the celerity of the pulsations - 132. Application of a toothed wheel to produce the pulsations - 133. By a sinuous wheel. 134. Method of diverting the current by a short circuit, its application to the alarum.-135. Effects of the current which has been used for signals - 136. Deflection of magnetic needle. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.