| CPC A47L 13/41 (2013.01) [B03C 1/0332 (2013.01); B03C 1/24 (2013.01); H01F 7/02 (2013.01); B03C 2201/20 (2013.01)] | 18 Claims | 

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               1. A magnetic vertical axis rotary clean-off attachment apparatus, configured for attachment to a magnetic sweeper apparatus for collection of metallic debris, the attachment apparatus comprising: 
            a main frame; 
                a finned driving wheel; 
                a support wheel; 
                a rotary cap; 
                a mounting feature; and 
                a plurality of magnet blocks that create a transition in magnetic field; 
                wherein the finned driving wheel is a hollow finned wheel driven by contact with a wall or a structure, assisting the magnetic field to move metallic debris from the side of the wall into the magnetic sweeper apparatus' range to be picked up by the magnetic sweeper apparatus. 
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