Automatic package binding machine

Claim 1

An automatic package binding machine comprising a machine frame having a package supporting table with an open space at its center portion, a rotary arm constructed and arranged to rotate around the package supporting table while guiding a string or like binding means from a supply source in such a way that the string is led through the open space in the table and passed around a package positioned thereon, string tension controlling means between the rotary arm and the string supply source for controlling the advancing speed of the string, the string tension controlling means including a pair of rollers mounted upon parallel axes with the string passing between the rollers, string slack controlling means cooperating with the string tension controlling means for providing constant speed and uniform tension of the string during the binding operation, the slack controlling means comprising a spring biased strut over which the string is trained to thereby absorb any slack of the string, string holding and delivering means for the ends of the string for gripping the string before and after cutting of the string during a package binding operation, means for applying a seal to each crossed part of the string binding the package, seal fastening means for securely fastening the seal applied to each crossed part of the string, and automatic stopping means for stopping operation of each of the aforesaid means upon completion of the binding operation. 2. An automatic package binding machine as in claim 1 wherein the holding and delivering means includes a movable string gripper and a fixed string gripper, and wherein the means for applying a seal is vertically movably mounted between the grippers so as to secure the seal at each crossed portion of the string.