Fleit & Jacobson
Device for narrowing the breadth of a sheet spring material in an apparatus for manufacturing a taper leaf spring
 A device for narrowing the breadth of a sheet spring material in an apparatus for manufacturing a taper leaf spring by which the sheet spring is previously subjected to breadth narrowing operation with edge rollers before taper rolling. A shape for narrowing the breadth of a sheet spring material is calculated so that a product after rolling may be within the tolerance. Then, a shape of template thus obtained is detected by a pair of detecting rollers to regulate the interval between the work rollers automatically before taper rolling. 
NHK Spring Co., Ltd.
B B B
B21H B60G B60G
inventional additional additional
Mitsushige Yoshihiro Akira
Kawakubo Sakai Ohno