Peening Tool

Author:  Alfred K. Foedisch
Source:  US Patent 3,610,008
Doc ID:  1969044
Year of Publication:  1969
Abstract:  
Apparatus for effecting a peening operation in which the peening elements are confined in structure as compared to conventional "free throw" methods. Specifically the subject apparatus is adapted to peen the surface of a circular bore or passageway in which reciprocal movement is imparted to the peening elements by rotation of an actuating member of novel construction. Complete coverage (peening) of the aforementioned bore is insured in that rotational and lengthwise movement of the housing or casing is manually imparted thereto.