Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise on the care and management of steam engines, boilers and electric machinery (1922)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & company · leaf 1136
Operation of Dynamos 1101 In Fig. 478, the first halves of the three coils are rep-resented by 1, 2 and 3, and the last halves by 1, 2 and 3. A narrow piece of tin with sharply pointed ends is bentup over the sides of the middle band at the center of thered mark so that the points are opposite each… … Fig. 478 edge of the first coil to the right of the red mark (No. 3in Fig. 478) is just in line with the edge of the left field.The red lead will then be in position shown in Fig. 478 andthe armature is in proper position to set the commutator.In the case of the right-hand drum armature, the…
