Folding knife having closure arresting means

Abstract

Abstract A FOLDING KNIFE IS DESCRIBED IN WHICH A CLOSURE ARRESTING MEANS IS PROVIDED TO PREVENT THE KNIFE BLADE FROM SNAPPING SHUT FROM AN OPEN TO A CLOSED POSITION, BY ABRUPTLY INCREASING THE CLOSING RESISTANCE OF THE BLADE WHEN IT REACHES AN INTERMEDIATE POSITION AT AN ACUTE ANGLE WITH RESPECT TO THE HANDLE. THE CLOSURE ARRESTING MEANS INCLUDES A SPRING BIASED STOP MEMBER PIVOTALLY MOUNTED INTERMEDIATE ITS ENDS ON THE KNIFE HANDLE WITH ONE END ENGAGING THE BLADE AND THE OTHER END ENGAGING A LEAF SPRING MEMBER. A SHOULDER PORTION OF THE STOP ENGAGING SURFACE OF SUCH BLADE ENGAGES THE STOP MEMBER CLOSE TO ITS PIVOT TO PROVIDE THE ABRUPT INCREASE IN CLOSING RESISTANCE IN THE INTERMEDIATE POSITION OF THE BLADE. THE STOP MEMBER ALSO FORMS PART OF A LOCK MEANS WHICH LOCKS THE BLADE IN ITS FULLY OPEN POSITION BY ENGAGEMENT OF A LATCH PORTION ON THE END OF SUCH MEMBER WITHIN A NOTCH IN SUCH BLADE. RELEASE OF THE LOCK MEANS IS ACCOMPLISHED BY PRESSING ON THE OTHER END OF THE STOP MEMBER TO MOVE SUCH END AGAINS THE FORCE OF A LEAF SPRING MEMBER IN ENGAGEMENT THEREWITH. IN ADDITION THE LATCH PORTION ALSO ENGAGES THE SHOULDER ON THE BLADE IN ITS CLOSED POSITION TO SPACE THE CUTTING EDGE OF SUCH BLADE FROM THE SPRING MEMBER TO PREVENT DULLING.

Inventors

• 👤 Franklin G Smith

Bibliographic Details