Abstract: An apparatus for use in removing and replacing a grinding wheel of a portable industrial grinder of the type having an output shaft, a grinding wheel support sleeve on the shaft, a non-circular collar formed on the sleeve, and laterally extending handles. The apparatus includes an upstanding housing having a top wall with a slot formed therein. The slot is open at one end and is dimensioned to receive and engage the non-circular collar of the shaft support sleeve of the portable grinder with the grinding wheel being supported on the top wall. The housing is equipped with an opening in at least one side thereof to permit the portable grinder to be positioned in the housing below the slotted top wall. A grinding wheel clamp adapted to engage the grinding wheel when it is supported on the top wall of the housing is provided.

Abstract: A heel for footwear includes a resilient, compressible generally wedge-shaped insert which is secured between a ground-engaging part and an upper part of the heel and absorbs shock. The insert tapers in depth away from the back of the heel while the rear end of the ground-engaging part of the heel slopes upwardly towards the back of the heel to reduce wear at the back of the heel.