Saw chain holding and filing apparatus

Claim 1

SAW CHAIN HOLDING AND FILING APPARATUS COMPRISING A BASE PLATE HAVING A SUPPORTING EDGE, A GROOVE IN AND EXTENDING LONGITUDINALLY OF THE SUPPORTING EDGE IN WHICH LUGS OF A SAW CHAIN EXTENDING ALONG SAID EDGE MAY MOVE WITH CUTTING TEETH AND DEPTH GAUAGES OF SAID CHAIN PROJECTING AWAY FROM THE EDGE IN THE PLATE, A MOUNTING SUPPORT CONNECTED TO THE BASE PLATE FOR CARRYING THE APPARATUS WHEN IN USE, A PAIR OF JAWS CARRIED BY THE BASE PLATE AND EXTENDING TOWARDS EACH OTHER OVER THE SUPPORTING EDGE, SAID JAWS BEING RELATIVELY MOVABLE TO INCREASE AND DECREASE THE SIZE OF A GAP THEREBETWEEN, MEANS CONNECTED TO AT LEAST ONE OF THE JAWS FOR MOVING SAID JAW TOWARDS AND AWAY FROM THE OTHER JAW TO GRIP AND RELEASE A CHAIN ON THE SUPPORTING EDGE AND EXTENDING THROUGH THE JAW GAP, A BASE OVER AND SPACED FROM FROM THE SUPPORTING EDGE, SUPPORTING MEANS SECURED TO THE BASE PLATE AND THE BASE FOR HOLDING THE LATTER IN PLACE OVER THE SUPPORTING EDGE, SAID BASE BEING SPACED FROM THE SUPPORTING EDGE SUFFICIENTLY TO PERMIT A CHAIN ON SAID EDGE TO MOVE THEREBETWEEN, A SUBSTANTIALLY HORIZONTAL SUPPORT PIVOTALLY MOUNTED ON THE BASE FOR MOVEMENT TOWARDS AND AWAY FROM SAID BASE, MEANS FOR ADJUSTING THE SUPPORT TOWARDS AND AWAY FROM THE BASE, A MOTOR CARRIED BY THE FRAME NEAR ONE END THEREOF AND SPACED FROM THE ROD, AND CLAMPING MEANS ROTATED BY THE MOTOR AND ADAPTED TO GRIP A CYLINDRICAL FILE AND TO HOLD IT IN A POSITION SUBSTANTIALLY PARALLEL WITH THE ROD AND EXTENDING ACROSS THE BASE PLATE PLANE AND A SAW CHAIN ON THE SUPPORTING EDGE THEREOF.