Power-operated sword saw

A power operated sword saw, comprising a plate-shaped sword having a lower region with a guiding groove;

• two saw blades reciprocatingly movable in opposite directions parallel to one another and each having a front saw blade tip and an opposite clamping end, each of said saw blades having a toothed side provided with a plurality of teeth and an opposite saw blade back guided in said guiding groove of said sword;
• clamping means;
• a drive which is coupled with said clamping ends of said saw blades through said clamping means;
• means for jointly coupling said saw blades with said clamping means and releasing said saw blades from said clamping means without auxiliary tools;
• and blocking means which block said clamping ends so as to prevent release of said clamping ends in a coupling position and which also are movable into another position out of the blocking position to give way for mounting of said saw blades and dismounting, said blocking means including a holding rod;
• and a push button which moves said holding rod from the blocking position to a releasing position and vice versa.

A power operated sword saw, comprising a plate-shaped sword having a lower region with a guiding groove;

• two saw blades reciprocatingly movable in opposite directions parallel to one another and each having a front saw blade tip and an opposite clamping end, each of said saw blades having a toothed side provided with a plurality of teeth and an opposite saw blade back guided in said guiding groove of said sword;
• clamping means;
• a drive which is coupled with said clamping ends of said saw blades through said clamping means;
• and means for jointly coupling said saw blades with said clamping means and releasing said saw blades from said clamping means without auxiliary tools;
• and blocking means which block said clamping end so as to prevent release of said clamping ends in a coupling position and which also are movable into another position out of the blocking position to give way for mounting of said saw blades and dismounting, each of said saw blades having a tip, said clamping end of each of said saw blades narrowing toward said tip and being provided with at least one insertion incline for inserting in said clamping means.

A power operated sword saw, comprising a plate-shaped sword having a lower region with a guiding groove;

• two saw blades reciprocatingly movable in opposite directions parallel to one another and each having a front saw blade tip and an opposite clamping end, each of said saw blades having a toothed side provided with a plurality of teeth and an opposite saw blade back guided in said guiding groove of said sword;
• clamping means;
• a drive which is coupled with said clamping ends of said saw blades through said clamping means;
• and means for jointly coupling said saw blades with said clamping means and releasing said saw blades from said clamping means without auxiliary tools;
• and blocking means which are located adjacent to said clamping ends contactlessly during normal operation and prevent a complete release of said clamping ends in a coupling position and which also are movable into another position out of the blocking position to give way for mounting of said saw blades and dismounting, said saw blade backs of said saw blades being at least partially hardened.

A power operated sword saw, comprising a plate-shaped sword having a lower region with a guiding groove;

• two saw blades reciprocatingly movable in opposite directions parallel to one another and each having a front saw blade tip and an opposite clamping end, each of said saw blades having a toothed side provided with a plurality of teeth and an opposite saw blade back guided in said guiding groove of said sword;
• clamping means;
• a drive which is coupled with said clamping ends of said saw blades through said clamping means;
• means for jointly coupling said saw blades with said clamping means and releasing said saw blades from said clamping means without auxiliary tools;
• and a blocking rod which is located adjacent to said clamping ends contactlessly with said clamping ends during normal operation and prevent a complete release of said clamping ends in a coupling position and which is movable into another position out of the blocking position to give way for mounting of said saw blades and dismounting;
• and a housing, said blocking rod being fixed with said housing.

A power operated sword saw, comprising a plate-shaped sword having a lower region with a guiding groove;

• two saw blades reciprocatingly movable in opposite directions parallel to one another and each having a front saw blade tip and an opposite clamping end, each of said saw blades having a toothed side provided with a plurality of teeth and an opposite saw blade back guided in said guiding groove of said sword;
• clamping means;
• a drive which is coupled with said clamping ends of said saw blades through said clamping means;
• means for jointly coupling said saw blades with said clamping means and releasing said saw blades from said clamping means without auxiliary tools;
• and blocking means which is located adjacent to said clamping ends contactlessly with said clamping ends during normal operation and resiliently block said clamping ends to prevent a complete release of said clamping ends in a coupling position and which also are movable into another position out of the blocking position to give way for mounting of said saw blades and dismounting;
• and a housing, said blocking means being fixed with said housing.

A power operated sword saw, comprising a plate-shaped sword having a lower region with a guiding groove;

• two saw blades reciprocatingly movable in opposite directions parallel to one another and each having a front saw blade tip and an opposite clamping end, each of said saw blades having a toothed side provided with a plurality of teeth and an opposite saw blade back guided in said guiding groove of said sword;
• clamping means;
• a drive which is coupled with said clamping ends of said saw blades through said clamping means;
• means for jointly coupling said saw blades with said clamping means and releasing said saw blades from said clamping means without auxiliary tools;
• and a blocking rod which is located adjacent to said clamping ends contactlessly with said clamping ends during normal operation and resiliently block said clamping ends to prevent a complete release of said clamping ends in a coupling position and which also are movable into another position out of the blocking position to give way for mounting of said saw blades and dismounting;
• and a housing, said blocking rod being fixed with said housing.