Race car driver goggles with little wiper blades, England, 1930's. Apparently they'd start wiping at around 15 mph once the propeller started moving fast enough
I sometimes used one of these spinning discs attached to the visor when racing in the wet
![[Linked Image]](http://tm-img.com/images/2023/03/31/go.jpeg)
![[Linked Image]](https://www.tm-img.com/images/2023/03/31/karting-visor.jpeg)
