Ferris, Richard. [from old catalog] · New York, T. Nelson and sons · leaf 190
as afford- FLYING MACHINES: HOW TO BUILD. 189 iiig precaution against the splintering of the bladeswhen in rapid motion. Some propellers have theirwooden blades encased with thin sheet aluminum to This method of mounting thewheels of the chassis hasbeen found the most satis-factory. The spring… … accomplish the same purpose^ but for the amateurbuilder linen is far easier to apply. The w^heels are of the bicycle type^ with wirespokes^ but with hubs six inches long. The axle isbent to incline upward at the ends, so that the wheelsincline outward at the ground, the better to takethe shock of a…
Aeronautics
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