Harmless Fan Has Ribbon Blades (Jul, 1935)
I actually just bought one of these for my desk at work.
Harmless Fan Has Ribbon Blades
SILK ribbons, held in loops, form the blades of a harmless electric fan recently demonstrated at the Industrial Arts Exposition in New York. The ribbons give a standard pitch when rotating and are said to be able to throw a current of air ten feet away.