细节
E. Leybold Köln
An unusual three-phase "squirrel-cage" A.C. motor (drehstrommotor), the mahogany frame with ivorine maker's label inscribed E. LEYBOLD'S NACH FOLGER, KÖLN A/RH, the 18 coils on silver, green and red silk-covered copper wire mounted in the vertical frame with copper wire conductors, the centre copper conductor wheel with axis mounted on twin
An unusual three-phase "squirrel-cage" A.C. motor (drehstrommotor), the mahogany frame with ivorine maker's label inscribed E. LEYBOLD'S NACH FOLGER, KÖLN A/RH, the 18 coils on silver, green and red silk-covered copper wire mounted in the vertical frame with copper wire conductors, the centre copper conductor wheel with axis mounted on twin