With recent talk of Whitworth ejector fields elsewhere on this forum, members might be interested in another extremely interesting invention: The Turbo Encabulator. Youtube is full of cheap imitations and variants that have appeared over the years, but this is the original promotional film:
https://www.youtube.com/watch?v=Ac7G7xOG2Ag
It was ofcourse originally a British invention, first published in 1944 by J H Quick, an enterprising student engineer (possibly not his real name) at the then City&Guilds College. A poor quality scan of the original paper, first published by the IET, is available here on the IEEE website:
http://ieeexplore.ieee.org/document/532 ... 5328648and
N.B. Please ensure your nangling pins are appropriately torqued for maximum reactive divergence prior to conscious forefinger activation on the above links.
You're welcome.