Cement Truck Music Box Ice Cream Maker

Cement trucks, the kind with the rotating drum, used to have drums made from welded plate metal.

Lately I've seen a trend towards some kind of fiberglass composite - the weave is evident under the paint and the advertisement for the company.

If there was a series of slots set into the drum, and a toothed metal bar mounted over the drum, similar to a comb but with teeth of varying sizes, the driver would be able to play tunes while he goes about his day.

Simply insert striking pegs into the slots set into the drum, and lock them in place with a set screw.

You would need to choose the locations according to the note and timing of that note that you wanted each striking peg to play.

The toothed metal bar (there must be a name for this thingy) would have precision sized teeth, so that each tooth was a different tuned note.

As the drum rotated in order to keep the cement from setting, you would have the effect of a giant music box on wheels.

Compose your own tunes, or work from the instructions in the manual consisting of current popular tunes. Manual drum speed controls would be helpful to adjust the pace of the performance.

And, as played out in the annos and links, why carry cement when you could pump ice cream? (Thanks, [ModernDivo].