The "Musical Sweeper" was manufactured in 1950 by Fisher-Price. When pushed, the toy plays the tune "Whistle While You Work". It is an actual working sweeper with a spring-loaded wood panel on the bottom to allow for the empting of the dust compartment.The design was one of the most difficult toys that Fisher Price ever attempted to engineer. The company worked more than two years in its development.
The lithographed tin top shows Dopey sweeping away with the words "Works While You Play." The toy has rubber-treaded wheels to protect floors, and it comes with a wooden 21" detachable push stick.
Info and images courtesy of Disneyana Vintage Collectibles 4U.