Wood - Aerial Machines, British Patent 16153 of 1908
A British patent specification, No. 16153 of 1908, filed by Frank Wood and printed in 1909 for the Patent Office and engineers reading claims for aerial machines. The single sheet is a plain ink line drawing of a lattice mast carrying tapered rotor blades, a boxed motor and drive, a pulley, lettered part references and handwritten notes across the margin.
