Wireworking – Applying wire – Binder tightening and joining implements
Patent
1987-12-14
1988-12-20
Larson, Lowell A.
Wireworking
Applying wire
Binder tightening and joining implements
100 29, 100 33R, B21F 902
Patent
active
047919680
ABSTRACT:
In a strapping head, slitting dies on a pair of pivotally mounted sealing jaws and a longitudinally movable punch on a punch holder cooperate and are adapted to make a sealless connection in two overlapped layers of a tensioned loop of steel strap. A longitudinally movable sealing yoke pivots the sealing jaws by means of cams on the sealing yoke and cam followers on the sealing jaws and moves the punch holder via a connection allowing lost motion between the sealing yoke and the punch holder. A pair of pivotally mounted notching jaws and a pair of notching cutters on a longitudinally movable notching cutter holder cooperate and are adapted to cut notches in opposite edges of the overlapped layers after the sealless connection has been made. A longitudinally movable notching yoke pivots the notching jaws by means of links and moves the cutter holder via a connection allowing lost motion between the notching yoke and the cutter holder. The sealing and notching yokes are arranged such that the sealing yoke moves the notching yoke for certain purposes. Strap-cutting elements are provided, which are adapted to cut the tensioned loop from the remaining strap.
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Larson Lowell A.
Signode Corporation
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