How did Walt Disney project his animations?

I have been looking all over the internet and could not find it so I decided to use yahoo answers. I know that Walt Disney would draw each animation on paper. Kind of like a flip book because they did not have the technology we have today. How did they project it. Did they have a really simple overhead. Then roll each drawing. To make a animation.How did Walt Disney project his animations?
After drawings had been traced and inked and painted onto cels, all the background paintings and cells were photographed by a film camera, probably something like an Oxberry.



http://www.michaelspornanimation.com/spl鈥?/a>



An oxberry is a film camera stand that points downward on a table that has peg bars that you place the cels onto. It also has various cranks that you can turn to move the pegs and drawings bit by bit.



A camera operator would have to lay down a background and then the cells on top, take a picture, then change the cells and move some cranks if he had to, then take another picture. After the camera operator was done shooting all the cells, he'd have a film reel with the completed animation that he could play in a film projector.