Cross-country type ski binding

A cross-country type ski binding comprising a toe iron, a clamp member and a lock member for the clamp member both pivotally mounted via longitudinally spaced apart respective pivot axes, said clamp member being in the form of a springy lever, said clamp member being pivotable from a lowered, forwardly extending clamping position in which the clamp member presses down upon the sole adjacent the toe of a ski boot for clamping the latter in said toe iron to a raised, upwardly extending release position in which the ski boot is released from said toe iron, the lock member being positioned ahead of said clamp member, said lock member being pivotally mounted at its lower end as aforesaid, a roller pivotally mounted on the upper portion of the lock member, said roller being in obstructing relationship with respect to the forward end of the clamp member whereby when said clamp member is pivoted downwardly the forward end thereof will engage the roller and cause the lock member to pivot forwardly until the forward end of the clamp member is positioned beneath the roller in its clamping position where said clamp member presses down upon the sole adjacent the toe of a ski boot, said clamp member being of a length whereby the forward end thereof extends beyond an imaginery line drawn through the pivot points of both the roller and the lock member with the lock member being pivoted to a position wherein the roller is positioned over the forward end of the clamp member in which position the clamp member exerts an upward spring pressure against the roller which tends to pivot the lock member rearwardly into secure locking relationship with the clamp member. forward