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Emanuel Kalisch
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Individual
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Individual
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Publication of GB190012514ApublicationCriticalpatent/GB190012514A/en
12,514. Kalisch, E. July 11. Flying - toys.-Two screw propellers b, c rotating in opposite directions are so arranged that the forward or upper one discharges its air clear of the following one. In Fig. 2, the air currents are indicated by the arrows y, z, and in Fig 3 by the arrow v. One propeller may be attached to the casing of the motor e. Radial plates k on the car prevent oscillations.
GB190012514D1900-07-111900-07-11Improved Double Screw Propeller for Flying Machines.
ExpiredGB190012514A
(en)