Method and apparatus for making tapered spring leaf blanks and the like

摘要

1,175,012. Leaf springs. NORTH AMERICAN ROCKWELL CORP. 23 June, 1967 [12 Sept., 1966], No. 29056/67. Heading F2S. [Also in Division B3] A heavy duty tapered leaf spring has oppositely inclined flat surfaces 16, 18, a flat straight surface 23 and is of constant width. In an alternative form the bottom surface is also provided with taper surfaces, Fig. 8 (not shown).