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Updated: May 8, 2025
I know his touch, but I must ask him why he is in Wilmington. He then went to the instrument and telegraphed to Zantzinger at Wilmington, and the reply was that he had been sent from Philadelphia to regulate the relay magnet for the Wilmington operator, who was inexperienced in operating....
Removing the relay entirely from the burned base, he secured a thin piece of board from one of the boxes near him, from the miscellaneous tools in another box found a gimlet, and made the necessary perforations. And soon he had the brass coil-frame mounted. Meantime Mr.
Manifestly there must be provided some convenient way for rapidly transposing the direction of the current flow if such a device as the polar relay is to be used for the reception of telegraph messages, and this is accomplished by means of an instrument called a pole-changer, which consists essentially of a movable contact piece connected permanently to the earth, or grounded, and arranged to connect one or the other pole of a battery to the line and simultaneously ground the other pole.
In the afternoon a hack came up from Casanova, with a fresh relay of servants. The driver took them with a flourish to the servants' entrance, and drove around to the front of the house, where I was awaiting him. "Two dollars," he said in reply to my question. "I don't charge full rates, because, bringin' 'em up all summer as I do, it pays to make a special price.
'I imagine it to be about fifty miles off, but hope it is not so much; nine hours' work to-day has only given us a bare four miles. Then for some days the only change in the toil of relay work and the sickening task of driving tired dogs on and on was that they marched by night, and rested by day.
He had the farm-waggon, and put some hay in the bottom, though he insisted Hanny should sit on the seat with him. They stopped at Fordham, and took in another relay; and the children were wild with the unreasoning gladness of youth. Mr.
Although the ship seemed to be behaving perfectly, he wanted check tests to make sure the relays were not being burned, which would keep them from responding properly. By rerouting the current around each relay, Arcot checked them one by one. It was just as they had finished testing the last one that Fuller yelled. "Hey! Look!" He pointed out the broad viewport in the side of the ship.
But if through the same circuit, by means of another key suitably connected there is sent the rapid changes in current from an induction-coil, it will cause a series of loud clicks in the telephone, corresponding to the signals transmitted; but this current is too weak to affect the telegraph relay.
"But I have been thinking of another scheme. The track-camp wire is bracketed across the yard on the light-poles. I have my pocket relay. I wonder if we could manage to cut in on that wire?" "Wait a minute," Brissac interrupted. He was gone but a moment, and when he returned he brought hope with him. "The wire is down and lying across the front vestibule," he announced excitedly.
The relay at A would be unresponsive, but the core of the relay at B would be magnetized and its armature respond to signals from A. In like manner, if the transmitter at B be closed, current would flow through similar parts and thus cause the relay at A to respond.
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