Strap tension sensing and cut off mechanism

摘要

A tension sensing and cut off control mechanism which operates independently of the mechanism for drawing tight a closed loop bundling strap placed about objects to be bundled. Within a stationary block, afixed to one end of a tool housing, is placed a movable block held stationary by a displaceable pin. Adjustable loading means engage said pin to control its movement based on the tension to be applied to the strap. Below the established load a separate pawl mechanism draws the strap up about the bundle. When the load on the pin is exceeded, the movable block is moved by the strap head causing a blade means to sever the strap adjacent the head and all parts return to their original positions.