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Updated: June 11, 2025
The idea of employing a magnet as compensator in a magnetic balance is not new, this disposition having been used by Prof. Von Feilitzsch in 1856 in his researches on the magnetizing influence of the current.
The latest improvements in the balance to secure perfect isochronism under varying conditions of temperature would delight the soul of Harrison, who worked from 1728 to 1761 on the problem of a compensator for the changes of rate due to the expansion and contraction of the metal, and received the reward of twenty thousand pounds sterling offered by the Board of Longitude.
It was provided with a subsidiary balloon, called the "Compensator," and properly the idea of M. L. Godard, the function of which was to receive any expulsion of gas in ascending, and thus to prevent loss during any voyage. The specification of this really remarkable structure may be taken from M. Nadar's own description.
An effective system of compensation has been eagerly sought by the best machine makers ever since the introduction of fast speed sewing. Compensation has been attempted here and there in the machines for many years, but no sewing apparatus could be said to be so compensated until the cone compensator came into use, a device which has been taken advantage of by various makers.
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