Fastener feeding and driving attachment

A portable power fastener driving tool including a driving spindle located within tubular means for axial and rotative movement therein, a feed tube associated with and connected to the tubular means for supplying fasteners to be driven by the spindle, a nose portion adapted to abut a workpiece and including a Y connection including a pair of upper arm sections and merging to a common bore section for coupling the tubular means to the feed tube at the lowermost extremity of the tool, the tubular means including an upper tube member coupled to suitable power supply means and a lower tube member at one of the said upper arm sections of the nose portion, the upper and lower tube members being mounted for relative reciprocating telescopic movement, spring means associated with the tubular means to bias the spindle and upper tube element upwardly from the Y connection, the upper tube element including a cam of predetermined axial dimension fixedly mounted thereon, a two position, pivotable escapement device mounted on the feed tube including means for selective activation to one of the two positions by the cam so that the spindle may be moved downwardly to an operative position within the nosepiece while the escapement controls the feeding of fasteners thereto.