Show Round Spring Edges to Prevent Bumpy Motion Sometimes springs will wear In such sucha a way that the car will ride with ft a peculiar bumpy motion This occurs when the shorter leaves are formed so that the edge Ige gradually wears a 11 fe see ROUND LOWER EDGES k ke e SH SHARP EDGE EDGE GROUND OFF Rounding the edge at the lower end of each leaf of the spring will prevent pre pre- vent wearing away a depression In Inthe inthe the leaf below and preserve smooth spring action even when riding over overlarge overlarge large bumps tion of the leaf below it When thE wheel strikes a bump slightly large largel than normal the edge of the spring Is forced to ride up UIl over the corner of the depression worn In the lower spring The cure for this Is to round the thc sharp edge at the lower end enn of each leaf ns as shown In the illustration Popular Science Monthly |