Power operated reciprocating tool

Claim 1

IN A FLUID PRESSURE OPERATED RECIPROCATING TOOL, THE COMBINATION OF A HORIZONTALLY ELONGATED HOUSING HAVING AN OPEN BOTTOM AND INNER AND OUTER ENDS, A CYLINDER BLOCK DISPOSED HORIZONTALLY IN THE INNER END PORTION OF SAID HOUSING, SAID HOUSING A COMPRISING A PAIR OF SIDE PLATES AND A TOP PLATE SECURED RESPECTIVELY TO THE OPPOSITE SIDES AND THE TOP OF SAID CYLINDER BLOCK AND PROJECTING LONGITUDINALLY OUTWARDLY BEYOND THE SAME, AN END PLATE SECURED TO THE OUTER ENDS OF SAID SIDE PLATES AND TOP PLATE, A HANDLE SECURED TO SAID CYLINDER BLOCK AT THE INNER END OF THE HOUSING, SAID SIDE PLATES ALSO PROJECTING DOWNWARDLY BELOW THE BOTTOM OF SAID CYLINDER BLOCK, A PAIR OF OPPOSING INTURNED FLANGES PROVIDED AT THE LOWER EDGES OF SAID SIDE PLATES, A HORIZONTALLY ELONGATED RECIPROCABLE TOOL HOLDER DISPOSED IN THE OPEN BOTTOM OF THE HOUSING AND PROVIDED IN OPPOSITE SIDES THEREOF WITH A PAIR OF GROOVES SLIDABLY RECEIVING SAID FLANGES, SAID CYLINDER BLOCK BEING FORMED WITH A HORIZONTAL CYLINDER, A PISTON RECIPROCABLE IN SAID CYLINDER, A PISTON ROD CONNECTED TO SAID PISTON AND PROJECTING OUTWARDLY FROM THE CYLINDER INTO THE OUTER END PORTION OF SAID HOUSING, A BRACKET RIGIDLY SECURED TO THE TOP OF SAID TOOL HOLDER AND DISPOSED IN THE OUTER END PORTION OF THE HOUSING, SAID BRACKET HAVING THE OUTER END OF THE SAID PISTON ROD RIGIDLY CONNECTED THERETO WHEREBY RECIPROCATION OF SAID PISTON IN SAID CYLINDER MAY RECIPROCATE SAID TOOL HOLDER ALONG SAID FLANGES, SAID CYLINDER BLOCK BEING PROVIDED ABOVE SAID CYLINDER WITH A HORIZONTAL VALVE CHAMBER HAVING A COMPRESSED AIR INLET, A SET OF PORTS COMMUNICATING WITH OPPOSITE ENDS OF SAID CYLINDER AND A SET OF PORTS VENTED TO THE ATMOSPHERE, A RECIPROCABLE SPOOL TYPE VALVE MEMBER SLIDABLE IN SAID VALVE CHAMBER BETWEEN AN INWARDLY SLID POSITION WHEREIN COMPRESSED AIR MAY BE DELIVERED TO THE INNER END OF SAID CYLINDER WHILE THE OUTER END OF THE CYLINDER IS VENTED TO THE ATMOSPHERE AND AN OUTWARDLY SLID POSITION WHEREIN COMPRESSED AIR MAY BE DELIVERED TO THE OUTER END OF THE CYLINDER WHILE THE INNER END OF THE CYLINDER IS VENTED, A RECIPROCABLE VALVE ACTUATING ROD RIGIDLY CONNECTED TO SAID VALVE MEMBER AND EXTENDING HORIZONTALLY IN THE OUTER END PORTION OF SAID HOUSING ABOVE SAID PISTON ROD, SAID BRACKET BEING FORMED WITH AN APERTURE SLIDABLY RECEIVING SAID VALVE ACTUATING ROD, RESILIENT ABUTMENT MEANS PROVIDED ON SAID ROD IN LONGITUDINALLY SPACED RELATION FROM EACH OTHER AND AT OPPOSITE SIDES OF SAID BRACKET, SAID ABUTMENT MEANS BEING ENGAGEABLE BY SAID BRACKET AT THE OPPOSITE ENDS OF THE RECIPROCATING MOVEMENT OF SAID PISTON ROD WHEREBY TO ALTERNATELY SLIDE SAID VALVE ACTUATING ROD BETWEEN ITS INWARDLY AND OUTWARDLY SLID POSITIONS, PASSAGE MEANS FOR DELIVERING COMPRESSED AIR TO THE INLET OF SAID VALVE CHAMBER, AND MANUALLY OPERATED VALVE MEANS IN SAID HANDLE FOR CONTROLLING THE FLOW OF AIR THROUGH SAID PASSAGE MEANS.