Ludwig Wittgenstein - Patentschrift
Andreas Roser · Sammelpunkt - Elektronisch archivierte Theorie · 1995
I, LUDWIG WITTGENSTEIN, of Wilmslow Road, Fallowfield, City of Manchester, Researching Student, do hereby declare the nature of this invention to be as follows: This invention relates to propellers for aeroplanes, helicopters, dirigible balloons, or other forms of aerial machines. It consists essentially of a radially armed motor each arm carrying a combustion chamber, and exhaust nozzle at its extremity and each arm formed as, or fitted with, a propeller blade.