Feeders for headed fasteners

A riveting machine including:

• a frame,
• a rivet upsetting die on the frame,
• a cylinder on the frame coaxially aligned with and spaced from the die,
• a guide bush slidable in the cylinder,
• a delivery passage in the end of the guide bush nearer to the die,
• a plunger coaxially movable in the cylinder and with limited slidable movement through the guide bush,
• means for advancing and retracting the plunger through the guide bush,
• a punch extending from the plunger and arranged to pass through the delivery passage when the plunger is advanced,
• a guide passage in the guide bush for guiding a carrier tape charged with rivets at equally spaced intervals between the retracted punch and the delivery passage,
• means for feeding said carrier tape in a curved feed path adjacent said guide bush and to said guide passage,
• an actuator oscillatably mounted in the guide bush for movement by the advancing plunger from an advanced position to a retracted position, a surface of said actuator being curved to cooperate with said carrier tape,
• actuator return means for moving the actuator from its retracted position to its advanced position upon the retraction of the plunger, and
• rivet engaging means on the actuator for engaging a rivet of the carrier tape when the actuator is moved to its retracted position and advancing the rivet towards the delivery passage when the actuator is moved to its advanced position,
• the parts being so made and arranged that with the advance of the plunger the guide bush is moved to a workpiece on the die, and with further advance of the plunger the punch penetrates the tape, driving a rivet therefrom through the delivery passage and the workpiece to the die.

A riveting machine, including:

• a frame,
• a rivet upsetting die on the frame,
• a cylinder on the frame coaxially aligned with and spaced from the die,
• a guide bush slidable in the cylinder,
• a delivery passage in the end of the guide bush nearer to the die,
• a plunger coaxially movable in the cylinder and with limited slidable movement through the guide bush,
• means for advancing and retracting the plunger through the guide bush,
• a punch extending from the plunger and arranged to pass through the delivery passage when the plunger is advanced,
• a guide passage in the guide bush for guiding a carrier tape charged with rivets at equally spaced intervals between the retracted punch and the delivery passage,
• an actuator mounted in the guide bush for movement by the advancing plunger from an advanced position to a retracted position,
• actuator return means for moving the actuator from its retracted position to its advanced position upon the retraction of the plunger, and
• rivet engaging means on the actuator for engaging a rivet of the carrier tape when the actuator is moved to its retracted position and advancing the rivet towards the delivery passage when the actuator is moved to its advanced position,
• the parts being so made and arranged that with the advance of the plunger the guide bush is moved to a workpiece on the die, and with further advance of the plunger the punch penetrates the tape, driving a rivet therefrom through the delivery passage and the workpiece to the die, and
• wherein the rivet engaging means includes:
• a pawl which, on the movement of the actuator to its retracted position, is moved past a rivet shank in the direction away from the discharge passage and, on the reverse movement of the actuator to its advanced position, engages the rivet shank and moves the rivet in the direction of the discharge passage.