I watched an interesting documentary last night, entitled "Inventions that shook the world". The bulk of the program was about the invention of the photocopier, and was quite interesting. However, the thing that caught my eye was an item under the heading of "Other inventions of the 1930s". There was a very short clip of a motorcyclist riding in the rain. He was wearing a pair of goggles. Each lens was fitted with a tiny windscreen wiper. These were driven, through a tiny gearbox, by a 6 inch diameter wind mill mounted on the front of his helmet!
They looked to be quite effective, as long as you did not mind all your mates referring to you as "Propeller Head". I was reminded of a device you could buy back in the 60s, called the "Retro Visor". This consisted of a circle of perspex about 8 inches diameter. It was slightly dished , and had a short spindle with ball bearings at the centre. This spindle was mounted on a headband that fitted around the helmet, so the disc`s centre was just above eyebrow level.
Thus the lower half of the disk covered much of your face . Small fins were mounted on the edges of the disc, causing it to revolve in the slipstream, flinging off the raindrops. It worked OK for a short time , but the quality of the bearing was poor, and it soon started to rumble. All too soon it seized solid. Did anyone else buy one? Just me, then.
Of course today we could have a wiper driven by a rechargable battery in your pocket.
They looked to be quite effective, as long as you did not mind all your mates referring to you as "Propeller Head". I was reminded of a device you could buy back in the 60s, called the "Retro Visor". This consisted of a circle of perspex about 8 inches diameter. It was slightly dished , and had a short spindle with ball bearings at the centre. This spindle was mounted on a headband that fitted around the helmet, so the disc`s centre was just above eyebrow level.
Thus the lower half of the disk covered much of your face . Small fins were mounted on the edges of the disc, causing it to revolve in the slipstream, flinging off the raindrops. It worked OK for a short time , but the quality of the bearing was poor, and it soon started to rumble. All too soon it seized solid. Did anyone else buy one? Just me, then.
Of course today we could have a wiper driven by a rechargable battery in your pocket.