A binding machine for the application of an edging strip of flexible material around an edge of thin articles particularly for edging soles of boots and shoes comprising, a hollow shaft oscillating about its axis, a pressure and transportation group, driven by said shaft, said pressure and transportation group comprising a hammer shaped part and an anvil shaped part, a first rod in the hollow shaft coaxial therewith driven reciprocably longitudinally to control pressing of the strip in a folded condition, and a second rod parallel to said hollow shaft driven reciprocably longitudinally, a fork actuated by said second rod to fold the strip partly above and partly below an edge of a thin article before the pressing operation, characterized in that said hollow shaft is connected with said hammer and anvil shaped parts, a support arm mounted on the hollow shaft connecting said shaft to said hammer and anvil shaped parts, a leverage device comprising a lever centrally pivoted on a pivot supported by the support arm, a sleeve, said lever carrying on one end said hammer shaped part, and on the other end being articulated to said sleeve, said sleeve being slidingly mounted on said first rod, and another lever, centrally pivoted on said pivot, a link rod, said another lever carrying on one end the said anvil shaped part and the other end being articulated to said link rod at its lower extremity, the upper extremity of said link rod being articulated to an end of a bell crank lever pivoted on the support arm and having the other end articulated with said first rod, and said bell crank lever;
- the first rod, the second rod and the hollow shaft being connected to a driving shaft for a common, synchronized drive and control.