Jet Stream Self Generating Vacuum?

[bvac6]

Has anyone ever seen one of these?

http://www.ebay.com/itm/1958-Vintag...541893?hash=item51e7c115c5:g:yV4AAOSwAPlXg4ex

 

[luxlife]

I saw a Jet Stream at a flea market about 30 years ago.

It wasn't in working condition. I actually thought it was a toy because it looked sort of flimsy and under-built.