6i8 



NATURE 



[October 29, 1891 



The actual machine employed for tins purpose by 

 Messrs. Schuckert is the multipolar dynamo shown in 

 Fig. 14, the direct current commutator and 1 rashes, as 

 well as the four rings and brushes for the two alternating 



direct current, it will rotate as a motor generating the: 

 two alternate currents, and also doing mechanical work 

 if required ; lastly, if supplied with the two alternate 

 curcnts, it will work as a twc-phase alternate current 



Fig. 14 — Schuckert's two-plane aUernate current generator, or motor, or a; paratus for transforming two alternate currents into a direct current. 



Fig. 15. — Schuckert two-phase alternate current transformer (method of construction). 



currents, being here seen. If rotated mechanically, it 

 will produce a direct current, as well as two alternating 

 currents differing by 90° in phase ; if supplied with a 



NO. I 148, VOL. 44] 



motor generating a direct current, as well as doing 

 mechanical work. 

 When transmitting power to a distance, the two-phase 



