What tool is a 'murphy bar'?
It's a long wooden bar, about 5' long, about 2" round at the top, tapering larger to about 6"x2" oval at the bottom, with (usually) steel wheels, and a steel "lever" at the bottom. Kind of like the design of a hand-truck.

It's used for moving or shifting heavy items.

I agree, images are impossible to find.

Edit: Found one: 



Search for "Pry Bar Lever Dollies" and you'll get all the Murphy bars you can handle. lol