Twentieth century hand-book for steam engineers and electricians with questions and answers; a practical non-technical treatise .. (1913)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & company · leaf 1452
Fig. 674 Fig. 675 Fig. 676 In Pig. 673 is shown an arc lamp with the case removed.The two upper coils are the coarsely wound series coils,while the two lower coils are the finely wound shunt coils.This lamp is adapted for an enclosed arc bulb. The mag-netically attracted cores are U shaped^ and…
