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1. Second, a spark coil, the primary terminals of which were connected to the primary sparker and to a set of dry batteries.
2. I was speeding a little—about one city block every five minutes—on Thirteenth Street, when my sparker stopped sparking.
3. Someone with a powerful sending set had cut loose into the air with his sparker.
4. I stayed with the Sparker outfit six years, and then my father died.