Strange Contraption On Wall With New Technology On Top

I was wondering what this was. That it would make a good photo! It's totally rusted and has a belt on it. It appears to have newer technology attached to the top of the machine. I thought, ah, I like the juxtaposition of that! It's a light on top and maybe that' a solar cell beside it? Could be some kind of camera.

I like taking photos of old run down places. This is attached to an old garage down town in a small town. Perhaps an old vehicle repair shop or maybe fire hall or both at different times. I took photos or at least a video of the other side of the building before. Perhaps I will do that again. I like this choice for the spot I took the photo. It limits the view and the photo more farther away gives you the ground, a side door and part of the red garage type door. Sometimes showing a close up or only part of the scene creates a bit more mystery so one has to make up what they imagine the bigger picture is or would be.

What ever this object is it surly looks antique and the bit of building looks old too. I posted this on imgur site where I am hosting these pictures from. The title 'strange contraption on wall' gave me allot of comments telling me what it is. A squirrel cage fan that is driven by a belt attached to a motor. A ventilation fan.

The power pipe beside it makes it look like it's part of it and the eaves trough makes it look like it's part of it. With the light and the other screen looking thing it makes it look like a part of a juxtaposition of different elements making a whole. That's why I liked taking this photo. Perhaps if I alter the image it can make it look more like this idea a bit. I do want to go back and record on iPad to get a better video and photo of it.

I made a short clip