Adjustable Peening Tool

Author:  John E. Gustkey
Source:  US Patent 3,444,714
Doc ID:  1967034
Year of Publication:  1967
Abstract:  
The disclosure pertains to a tool having a rotatable cage with tapered rollers supported therin and engaged by a central tapered end of a driving arbor. The tapered end had axially disposed flutes therin for moving the rollers radially outward. The arbor is longitudinally adjusted relative to the rollers so that the tapered end can change the overall diameter of the rollers.