. Bulletin. Science. Figure 44.—Details of tlie arrangement of tfie arc liglit in tlie lighthouse at Cap de la Heve. From E. AUard, Phares et balises, vol. 5 of Les Travaux publics de la France, L. Raynaud, ed., Paris, 1883, pp. no, in. an H cross-section.'' The wire was wound longi- tudinally into the cavities in the armature and the ends of the wire were led out to a commutator divided '» British patent 2107 (provisional specification filed Septem- ber 10, 1856); Werner .Siemens, "Ueber eine neue Construction magneto elektrischer Maschine," Annalen der Physik und Chemie, 1857, vol.
. Bulletin. Science. Figure 44.—Details of tlie arrangement of tfie arc liglit in tlie lighthouse at Cap de la Heve. From E. AUard, Phares et balises, vol. 5 of Les Travaux publics de la France, L. Raynaud, ed., Paris, 1883, pp. no, in. an H cross-section.'' The wire was wound longi- tudinally into the cavities in the armature and the ends of the wire were led out to a commutator divided '» British patent 2107 (provisional specification filed Septem- ber 10, 1856); Werner .Siemens, "Ueber eine neue Construction magneto elektrischer Maschine," Annalen der Physik und Chemie, 1857, vol. 101, pp. 271-274. into two parts. The armature was spun on its long axis between rounded-out cavities in the poles of the field magnets (fig. 49). This shuttle-type armature was more efficient mechanically than the disk armature. Because of its more compact forin, the shuttle armature could be driven with less power than could a disk armature of 370 BULLETIN 228: CONTRIBUTIONS FROM THE MUSEUM OF HISTORY AND TECHNOLOGY. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smithsonian Institution; United States. Dept. of the Interior; United States National Museum. Washington, Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off
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