Means for Treating Coil Springs

Author:  Harold F. Schulte, Ardee H. Freeman
Source:  US Patent 3,383,803
Doc ID:  1965026
Year of Publication:  1965
Abstract:  
A machine for surface treatment of continuous pitch coil springs comprising horizontally disposed roll cluster having a feed end at one end portion and a delivery end at the opposite end portion and including a support roll and a pair of guide rolls located above the support roll with the rolls spaced one from another to define a spacing therebetween greater than the diameter of the coil springs adapted to be processed therethrough; the support roll has annular ribs extending outwardly radially from the periphery and axially spaced apart by an amount corresponding to the pitch of the coils of the coil springs from the feed end to the delivery end and means for throwing treating material onto the coil springs as they are advanced through the roll cluster from the feed end to the delivery end and in which the guide rolls at the feed end and at the delivery end are of smaller diameter than the remainder to provide a spaced relationship therebetween which is greater than the diameter of the coil springs into and out of the roll cluster.