Jack-knife

摘要

A jack-knife is disclosed having a holder and a blade hinged to said holder thus that it can be turned between a closed position in which its cutting edge is in a longitudinal slot of said holder and an opened position which is 180 DEG offset to the closed position and in which the blade can be fixed. The holder of the jack-knife comprises of two joint parts which are injection molded. One of these parts has an integral spring means which acts against a tiltable latch lever. Said lever is pivotable inserted at the back of said holder into the longitudinal slot thereof thus that its latch portion engages a notch in the back of said blade to fix the blade when it is in its opened position. This jack-knife is accordingly composed only of four main parts and can therefore be produced very economically.