Interesting 1942 Singer Prototype by Malcolm S. Park

[electrolux~137]

Doing some research for my next vacuum cleaner victim to be dragged to the auction block    and found this patent listing. Malcolm S. Park designed the Singer R2, R3, R4 and R5.



http://books.google.com/patents?id=...gbs_selected_pages&cad=2#v=onepage&q=&f=false