Not an new invention as such but nicked idea off youtube! Anyway a little half day today and have a big job coming up and have to grind a lot of garbage off the floor and am sick of going through vacuum bags and constantly emptying and so made a pre-seperator where 99.9% of the crap goes into a bin as opposed to vacuum. Got a plastic vase from flower shop for nowt that they were chucking, old empty tub of 500, cut a few holes and it works a treat! This one is a dry run but will improve on it and don't need another expensive big tool to get broken and made one for nothing Edit if you want the site http://werkstattonline.ch/?p=427 enjoy!
I don't know if this is similar http://www.machinemart.co.uk/shop/product/details/ash-can-filter-for-vacuum-cleaners?da=1&TC=SRC-ash
Roughly the same mate (had one but still let stuff through) but the shape of the cone makes it work a lot better same idea as a dyson using a vortex with waste going down the way