Blasting wheel apparatus and blades therefor

Claim 1

A blade for use in a blasting wheel apparatus for accelerating particulate materials comprising a single disc presenting a substantially planar disc face and a circumferential surface, having complimentary recess means comprising a plurality of like radially extending first recesses in said circumferential surface, spaced axially from said disc face and a plurality of like second recesses in said disc face in radial alignment with said first recesses and said disc mounted on a rotatable drive means, a plurality of like blades extending radially relative to said disc face and circumferentially spaced about said disc face, having anchoring means for engaging with said complimentary recess means of said disc whereby said anchoring means is remote from the path of the accelerating particulate materials, a flange for presenting to said plurality of blades upon being mounted onto said disc and a locking means for urging said flange, said plurality of blades and said disc together thereby securing said plurality of like blades from separation from said disc, wherein said blade comprising a base having a substantially planar base surface for presenting to said disc face, said anchoring means extending from said base and comprising a hooking member and a lug at opposite end regions of said blade, said hooking member having a depending portion extending substantially parallel with said base surface in a direction towards said lug, said depending portion adapted for matingly engaging said first recess, and a bearing means facing opposite said base surface and extending radially inward from said blade for engagement between said flange and said disc, whereby said blades are mounted onto said disc by first registering said hooking member within one of said first recesses and secondly registering said lug within a radially aligned second recess, applying said flange to said bearing means and locking said blades to the disc.