The wheels are against the face as you shave with it, supposedly giving you less drag that with a standard DE. They are antiques so no one makes blades for them.
Looks just like a King oscillator, the wheels drive a cam which makes the blade saw back and forth slicing the whiskers. The King takes special blades which are thicker and have a different hole pattern then regular DE blades. Don't know if that razor take regular blades or not. Bob.