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The airman was in some degree protected from the wind by a strong talc screen, also wire-laced; by means of this, and a light radiator worked by a number of accumulators, he was enabled to resist the cold, which had been so great a drawback to the pioneers of airmanship. In this aeroplane Smith and Rodier had made many a long expedition.
Furnaces, boilers, condensers, accumulators, dynamos all the ponderous apparatus of steam and electricity were done away with, and he had a power at command greater than either of them. There was no doubt about it.
In order that electric launches may prove useful, it will be desirable that charging stations should be established, and on many of the British and Irish rivers and lakes there is abundance of motive power, in the shape of steam or gas engines, or water-wheels. A system of hiring accumulators ready for use may, perhaps, best satisfy the conditions imposed in the case of pleasure launches.
Still good breeding points out the gentleman, and sentiments of honour and delicacy appear the offspring of greatness of soul when compared with the grovelling views of the sordid accumulators of cent. per cent.
Attempts have been made to run tramcars with the electricity supplied by accumulators alone, but the system is not economical owing to the dead weight of the cells, and the periodical trouble of recharging them at the generating station.
While Nadia brought in meat and vegetables and stored them away, Stevens attacked the problem of constructing the pair of tight-beam, auto-dirigible transmitter and receptor units which would connect his great turbo-alternator to the accumulators of their craft, wherever it might be in space.
Even before his accumulators failed, generator after generator burned out, the defensive screen collapsed, and the red converter beam attacked voraciously the unresisting metal of those prodigious walls.
The "Go-Ahead" was of elongated form, so as to facilitate her horizontal displacement. Her car was a platform somewhat like that of the balloon used by Krebs and Renard; and it carried all the necessary outfit, instruments, cables, grapnels, guide-ropes, etc., and the piles and accumulators for the mechanical power. The car had a screw in front, and a screw and rudder behind.
Business was to be done business which was to decide the failure or success of months of work, and which might affect their whole careers. Between them lay a long brown table, stained and corroded by strong acids, and littered with giant carboys, Faure's accumulators, voltaic piles, coils of wire, and great blocks of non-conducting porcelain.
The lid was shut and secured, the water compartments filled, and the Sword sank out of sight. We were saved! The Sword was divided into three water-tight compartments. The after one contained the accumulators and machinery. The middle one, occupied by the pilot, was surmounted by a periscope fitted with lenticular portholes, through which an electric search-lamp lighted the way through the water.
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