Wire loop stitching machine head with cam-controlled staple supporter
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United States of America Patent
Stats
-
Dec 4, 1984
Grant Date -
N/A
app pub date -
Jan 12, 1983
filing date -
Jan 12, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A 'loop'-type wire stitching machine head includes a reciprocating drive coupled to a staple-forming and driving means and to a wire feed means for feeding a length of staple wire to a holder and severing it. A bender forms the wire over the holder into a generally inverted U-shaped staple. A supporter with a rounded projection is then inserted between the legs of the staple and a drive bar deforms the bight portion of the staple over the projection into a curved loop portion and then drives the formed loop staple into an associated workpiece, retracting the supporter in the process. The supporter is biased to its supporting position and a guide plate guides its movement to that position. A cam positively holds the supporter in its supporting position during forming of the loop portion of the staple and effects positive movement thereof partway to its retracted position after formation of the loop portion to accommodate driving of the staple.
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