ection of the ature causes it to retain its place. Hence the bellows mechanism is shown. The stays open. But in rising by medns of the spring, H, details of the pneumatic move- and anothercontact piece corresponding to it, it throws ment will be at once recog- the right hand magnet into its own… … the other magnet, and draws the armature to the right. forms the subject of this article. Within a wind chest Le Creusot, France. The ingot was worked to a dia- The bellows under the influence of thespring shown in a hollow cored electro-magnet, indicated by B, is meter of about 64 feet, then…
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