SELF RESTORING PIVOTING MEANS

摘要

A pivoting means for pivoting back and forth a mechanical load such as a print hammer about a given axis and within a low amplitude angle includes two elongated leaf springs. The leaf springs are located in planes at a given angle with respect to each other but both planes being perpendicular to the plane of pivotation of the mechanical load. A frame fixed relative to the pivotable mechanical load is used for attaching the extremities of both elongated leaf springs. The mechanical load is attached to both leaf springs equidistant from their attached extremities. A power source pivots the mechanical load from its rest position to its work or print position causing the two leaf springs to be flexed in torsion. The torsion flexing generates a return torque for self restoring the mechanical load back to its original position.