Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 28
rnish. It is very important thatthe two ends of the propellers should be uniform propellers, axles, and bearings. Friction hasbeen reduced to practically nothing. It is pos-sible, of course, to drive a propeller with theshaft turning in a hole drilled at random througha stick, with a glass bead for… … FINISH ONE SIDE OF THE BLADE BEFORE CUTTINGAWAY THE OPPOSITE SIDE. shaft mechanisms have been prepared, even toa very complete arrangement of miniature ball-bearings. The model builder who cannot avail himselfof these parts can, nevertheless, imitate their ac-tion with reasonable fidelity. The axle…
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