Abstract: In apparatus for the placement and alignment of punch knives mounted in a knife holder on a punch press, a first swivel arm is pivotally supported at one end on a support for pivotal movement about a vertical axis. A second swivel arm is supported on the other end of the first swivel arm. The second swivel arm is a double-armed parallelogram member pivotally movable about a vertical axis and about horizontal axes at each of the opposite ends. A knife holder is pivotally connected to the parallelogram member at the opposite end from the first swivel arm. Due to the pivotal support of the two swivel arms and the pivotal connection of the knife holder, the knife holder can be moved along horizontal and vertical coordinates. A return member is associated with the second swivel arm for returning it into the horizontal position after the completion of a punching operation.

Abstract: To eliminate the noisy milling machines for cutting grooves in articulation pieces of innersoles, a machine is provided which comprises a series of pairs of forwarding rollers, one of the rollers of the first few pairs of rollers has a double knife formed on at least a part of its circumference so that a piece passing between such a pair has two longitudinal cuts formed thereon which are to become the side walls of the groove; a transverse skinning knife is pivotally mounted so as to be moveable into and out of the path of this piece as it passes a subsequent pair of rollers, this knife has the width of the groove and is pivoted into the path of the piece to remove the material between the longitudinal cuts. Preferably, a bracket device is associated with the skinning knife to maintain the straight path of the piece as the skinning knife works on it.

Abstract: An apparatus which is suitable for automatic operation is provided for riveting bowed leaf-like springs to flexible bodies, e.g. for riveting shanks to innersoles. Two riveting devices are included in the apparatus for simultaneously riveting the two ends of the shank to the flexible body. This means for feeding the flexible body to riveting position and the means for feeding rivets to the riveting devices are more or less conventional. The shanks to be united to innersoles are fed one at a time, from a pair of magazines holding a stack of shanks at the ends, to a pair of guide bars containing matching grooves, pushed along the grooves by a pusher means, which shanks at the end of the grooves arrive at the riveting position. At the end of the grooves, the lower ends of the latter are in the form of leaf springs so that the shank to be united can be snapped out of the groove. The guide bars are mounted so as to be pivoted downwardly against the action of a spring.