Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 686
ed, but the simplest is made from two car-riage- or machine-bolts and a yoke of soft iron,as shown at E in Fig. 19. The yoke is $/% of aninch in width, 2^ inches long, and provided withtwo ^4-inch holes i1^ inches apart from centerto center. Two-inch carriage- or machine-boltsare used, and they… … FIG. ZO.WINDING DEVICE. the ends of the wire coils in place, and the wind-ing may be done on each bolt separately and con-nected to the yokeafter the winding iscompleted. Doublecotton insulated No. 20 or 22copper wire should be usedfor the coils. Be careful towind the wire in opposite di-rections…
Children's literature
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