Abstract: A device for use with a staple supply in the form of a roll of wire including a housing assembly within which a single motion transmitting member is adapted to be moved by any suitable source of power through successive operating cycles each of which includes an operative stroke and a return stroke. The cycle of movement of the single member is used to effect operation of the usual wire stitching elements for handling and feeding the wire supply, cutting and forming an end section therefrom into a U-shaped staple, and driving the same.

Abstract: A one-piece fastener for attaching a spring member to a frame or the like comprising a length of metal bent to provide (1) a pair of frame penetrating portions disposed generally parallel with respect to one another and having free ends configured to facilitate simultaneous entry thereof into the frame, (2) a pair of relatively short driving portions connected at one of their ends with the opposite ends of the frame penetrating portions and extending therefrom at generally right angles in directions generally toward one another, and (3) a nestable portion connected with the driving portions bent to define a hook for receiving the spring member therein. A stick package is formed of a multiplicity of fasteners. In one embodiment the nestable portions of adjacent sticks are disposed in horizontal abutting relation and the frame penetrating portions of adjacent fasteners are disposed in parallel relation.

Abstract: A fastener cartridge of the throw-away type including a housing enclosing an elongated continuous wire wound in coil formation on a spool and mounting the spool for rotation about its axis in response to an outward pull on a free end portion of the strand extending outwardly of the housing and a holding pawl within the housing for preventing movement of the strand free end portion into the housing and a cooperating portable power-operated device lockingly securing said cartridge in operative relation thereon having power driven means for cutting off successive lengths from the free end portion of the wire and driving the same into a workpiece. The dimension of the lengths cut off from the wire can be varied within a range as desired by an adjustable power-operated feed pawl which cooperates with the holding pawl of the cartridge.

Abstract: A pneumatically operated fastener driving device having an improved main valve assembly including separate inlet and outlet valve structures and a spring operatively connected with the inlet and outlet valve structures for effecting (1) a movement of the outlet valve structure from the open position thereof to the closed position thereof simultaneously with a movement of the inlet valve structure from the closed position thereof to the open position thereof; and (2) a movement of the outlet valve structure from the closed position thereof to the open position thereof sequentially following a movement of the inlet valve structure from the open position thereof to the closed position thereof.

Abstract: A staple driving device comprising a nosepiece assembly including a rigid structure having opposed flat side surfaces defining the sides of a drive track for guidingly engaging the legs of a leading staple during the driving movement thereof, a forwardly facing flat surface extending between the side surfaces for guidingly engaging the rear surface of a leading staple during the driving movement thereof, and longitudinally extending surfaces defining an opening of a staple-shaped configuration extending forwardly into communication with the drive track defining surfaces, and a rigid member mounted on said rigid structure forwardly of said staple-shaped opening for (1) translational movement in a direction parallel with the movement of the staple driving element between a locked operating position and a raised unlocked position and (2) pivotal movement between the raised unlocked position and a forwardly extending open access position, the rigid member having (1) staple stop surfaces facing rearwardly when the