[Bubier], Edward Trevert, 1858- [from old catalog] · Lynn, Mass., Bubier pub. co. · leaf 97
Figure 8. Fig. 9 represents a simple contrivance for driv-ing by hand. A cast-iron frame, light but wellribbed, is secured to a board or table a few feetfrom the dynamo by two thumb screws. A wheel15 inches in diameter, 1 ^-inch face, driven by a … A 3g £^P t3 Figure 9. U 96 ELECTRICITY AND ITS
Electricity
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