B - Operations – Transporting – 42 – B
Patent
B - Operations, Transporting
42
B
B42B 9/00 (2006.01) B26F 1/04 (2006.01) B26F 1/32 (2006.01) B42B 5/10 (2006.01)
Patent
CA 2064050
A paper punch and binding apparatus (10) has two punch me- chanisms, one (12) for punching round holes in a paper sheets stack and one (14) for punching rectangu- lar holes in another paper sheets stack. A single lever or crank (17) si- multaneously operates and drives a series of round end punches (49) to shear the round holes and a punch plate (26) with integral rectangular punch elements (28) shear rectangu- lar holes. A four-bar linkage (42) connects the lever (17) to the punch plate (26) and the series of the punches (49) in a manner that both the plate (26) and punches (49) are driven in a vertical straight line (D, D' fig. 18) and with a greater me- chanical advantage at the start and over the first increments of the punching operation. In a preferred embodiment, a binding station is provided in an apparatus base portion (11) particularly for binding with a Douvry-type plastic resilient loops binding element. The binding station has an operating knob (24) which operates a simple gear interconnect train (64-68) for uncurling the resilient loops (71) and allowing the punched hole stack to be inserted thereon. In an additional embodiment two rows of large (85) and smaller (86) diameter punches are provided in one round punch mechanism (12) with an apertured translatable bar (87) for ren- dering inoperative one or the other of these rows of punches (49).
Groswith Charles T. III
Kaufmann Rick J.
Lathrop Robert L. Jr.
Phipps Richard D.
Stewart John F.
Gowling Lafleur Henderson Llp
Taurus Tetraconcepts Inc.
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