Sheet lifter with punches for looseleaf book
AssigneeF. L. Russell Corporation
InventorRobert C. Cline
Life of this patent
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Abstract
This invention provides a special sheet lifter in a looseleaf notebook, and means associated with the sheet lifter for punching openings in an unperforated sheet at locations that fit the ring spacing of the looseleaf book. A flap portion hinged to the main body portion of the sheet lifter swings about a hinge line of a punch and die structure for making holes in any sheet at spacings for receiving the rings of the looseleaf book with which the sheet lifter is a part.
Claims7
A sheet lifter for a looseleaf, ring binder book comprising a stiff elongated panel having a hinge line extending lengthwise thereof and dividing the panel into a main body portion and a flap portion, the main body portion having elongated openings adjacent the edge opposite the hinge line and being elongated in a direction at right angles to said edge for receiving the rings of a binder, the main body portion and flap portion normally lying in the same plane for functioning as a sheet lifter, and the main body portion being substantially wider than the flap portion in a direction at right angles to the hinge line, the flap portion being movable about the hinge line as an axis and into different angular positions up to substantially 180.degree. with respect to the main body portion and overlying said main body portion, a plurality of openings through the panel and along a line spaced from and parallel to the hinge line, punches connected with the panel along another line spaced from and parallel to the hinge line but on the other side of the hinge line from the line of openings, the line of openings and the line of punches being at the same distance from the hinge line, said elongated openings, said plurality of openings and said punches being in alignment in a direction at right angles to said hinge line so that the punches register with the respective openings when the flap portion is swung substantially 180.degree. into a position overlapping and adjacent to and substantially parallel with the main body portion and holes punched in a sheet will have the same spacing as the elongated openings, the punches fitting snugly into the respective openings for punching holes through a sheet disposed between the openings and the punches, the hinge line of the sheet lifter being stiff enough to hold the main body portion of the panel and the flap portion thereof in substantial alignment when no force is being applied to the flap portion to swing it angularly about the hinge line as an axis.
Dependencies are inferred from the claim text.