Safety bindings for skis
 This invention relates to safety bindings for skis of the kind having a front binding which consists of two spaced toe-clamps which grip the toe of the boot and which are mounted on outwardly pivotable arms. According to the invention, when these arms are locked in the closed position, they are capable of release in opposition to the pressure of a spring. The force of such spring acts in the direction opposite to the direction of ski movement. In response to a sudden rearward force on the ski, the two toe-clamps can be moved apart simultaneously laterally of the ski a distance greater than the width of the boot. 
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Bernhard
Kirsch