Yes, they are fully operational. Yours have the little pedestal legs? Fortunately for me, mine were in awesome shape. I found them at a flea market in Harrisburg PA for $10 each. The glass and seals were intact and unscratched and the metal was basically perfect. Those pumps are great, real workhorses but NOT at all quiet, haha.
I have a pretty vast collection of antique aquarium items. If you are into this stuff, check out this book: http://www.amazon.com/The-Toy-Fish-Aquarium-One-Hundred/dp/0971199914I got one for christmas this past year (if you wait and watch, you can get one for about $100) and its so interesting!
Bump: the pump on the far right of hte picture is one I want, a fishkeeping friend in Bermuda has one and I covet it, lol.