| Show DYNAMOS ON WAR SHIPS an interesting Inte automatic governor of use ui in in cue case of accident if you want to know what the most interesting of the recent electrical inventions is the most meet interesting te to naval men that ie is said a naval officer the be other day lay you will find it in the dynamo governor the ordinary run of people did not think about t this his point of course but when Edi sons works downtown down town in new york burned out because the tile load on the the dynamos was suddenly lightened and the whole power of the machines was turned loose on the lamps that remained there was not a naval officer but stopped to think what would happen on a war ship should euch such an accident oc cur there under the ordinary method of controlling an electrical system the engineer has to stand by to manipulate what is called a res reactance stance box whenever the load at the dynamo dy namo is suddenly increased or by adding to or cutting off ath the number of lamps if this box is attended to instantly matters are all right Butin but in away a way ship in time of battle it might very easily happen that an unlucky shot from the enemy would not only cut off all but a few of the lamps but also kill the engineer whose duty it was to handle the resistance box or the lamps might be cut off and the engineer be too badly frightened to do the right thing in a moment the remaining lamps on the ship would be destroyed and the dynamo as well the magazine would be in utter darkness and fatal confusion fu bion would prevail the one thing for which naval men have looked was found it was a simple thing just an extra coil 0 of f wire wire placed on the dynamo this co coil being made of much larger wire ire than is used on the horseshoe I 1 ma magnet gnet it is not easy emy to ex explain P the action of the extra coil of wire ire but it receives the current w and serves serve it a governor serves a throttle on a steam pipe of an engine if there theris is a call for an inar increased eased service the series coil as it ia is called provides it if every lamp but one of the lamp circuit be cut off at one stroke that one lamp burns burn on unaffected to any appreciable extent there is is another feature of this governor that makes it valuable to a war shin ship whose coal space is is limited limit ed when the lamps are cut off the power of the dynamo and the consequent consumption of coal are not wasted in forcing the cur rent through a resistance box the reduction in the power used i ii almost in proportion to the load removed or the number of lamps cut off if lamps for ansta instance nee require 50 horae horse power the power required when lamps were cut cat off would be eay 7 horse power which mans means a saving paving of the coal required for the 43 horsa horse power dispensed with the invention is not of the sort tu to attract notoriety outside of people interested in electrical plants but to naval vessels it ia is a matter of enough importance to remove the only objection against dynamos on shipboard |
