This is a power source that farmers used in the fields circa 1906. A long canvas belt was placed over the flywheel and then also placed over a similar wheel on the piece of farm machinery to be powered.

As you can see from the motion blur on the flywheel, this unit is still operating.

For a tongue-in-cheek and sometimes cynical look at other photos that might have been found in the time capsule, go to my gallery at http://www.pbase.com/mrquietguy/farmday