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 1244
windinga coil in this manner it is of course necessary to know ex-actly what length it must be^ and a pattern coil must there-fore first of all be prepared^ from which the spacing of thepins can be taken^ so that the completed coil will fit intothe slots for which it is intended. 868. How are such… … Fig. 542 may be no wrong connection when the wires are finallyconnected to the commutator. Before placing the coils the slots must of course be in-sulated as explained previously. We now continue to layin coils until the whole armature is full, but when nearlyfull, the forward ends of the coils we…
