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Publication numberUS2617423 A
Publication typeGrant
Publication dateNov 11, 1952
Filing dateFeb 17, 1951
Priority dateFeb 17, 1951
Publication numberUS 2617423 A, US 2617423A, US-A-2617423, US2617423 A, US2617423A
InventorsMiller Joseph C
Original AssigneeCoast Envelope Company
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Loose-leaf binder
US 2617423 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

Nov. 11, 1952 J. c. MILLER 2,617,423

LOOSE-LEAF BINDER Filed Feb. 17, 1951 FIG. I.

FIG. 3.

22 INVENTOR 22o. -j JOSEPH c. MILLER ATTORNEYS Patented Nov. 11, 1952 LOOSE-LEAF BINDER Joseph C. Miller, Compton, Calif., assignor to Coast Envelope Company, Los Angeles, Calif., a corporation of California Application February 1'7, 1951, Serial No. 211,464

1 Claim.

This invention has to do with loose-leaf binders and. has for its principal object the provision of a, binder of the ring-type which incorporates novel, inexpensive and simple means for flexing the free ends of the binder rings or loops apart to enable insertion or removal of perforated sheets.

Other objects and advantages will appear hereinafter.

For the purpose of explaining my invention, I shall now describe it in one of its presently preferred embodiments, for which purpose I shall refer to the accompanying drawings, wherein:

Fig. 1 is a side elevational view showing the device in position binding a stack of perforated sheets;

Fig. 2 is a side elevational view, partly in section, showing the binder loops flexed to separate their free ends for insertion, or removal of sheets;

Fig. 3 is a View similar to Fig. 2, but showing a sheet being inserted in the binder atop the bound stack of sheets; and

Fig. 4 is an enlarged fragmentary perspective.

Referring now to the drawings, the numeral 5 designates a stiff backing sheet for the binder, on one end portion of which I mount a binder element generally designated by the numeral Ill.

The binder element [0 comprises a base portion having end extensions l6 secured to the backing sheet as by rivets [8. The base has, along its rear or right-hand edge, upturned ears IQ for the purpose to be described.

Along the forward or left-hand edge of the base, there are upwardly and thence rearwardly and downwardly curved integral, flexible, somewhat semicircular binder loop elements 29, each of which normally terminates substantially in contact with one of the ears [9. By flexible I mean that the loop elements may be flexed in the manner of a spring and upon release will return to their original or normal position. As best shown in Fig. 1, the sheets 22 to be bound are perforated at 23 to pass the loops.

The structure described up to this point is more or less conventional, each of the loop elements together with its underlying base portion constituting a substantially C-shaped binder loop or ring, and it will be understood that other well known forms of ring-type binders may be substituted for the structure described up to this point.

My present invention has to do with the combination, with a ring-type binder, of means for flexing the loops so as to separate their free ends sufficiently to permit insertion and removal of sheets.

This element comprises a substantially rigid plate 30 having transversely aligned perforations 33 disposed to register with and pass the respective loops 20, the plate being mounted on the device in the same manner as the bound sheets 22, and being positioned at the bottom of the stack of sheets as best shown in Fig. 1.

Thus, as best shown in Fig. 2, when it is desired, for instance, to remove the bound sheets, it is only necessary to move the plate 30 upwardly along the loops to a point at which the plate may be fulcrumed on the loops, and thence, by downward manual pressure on the outer or lefthand end portion of the plate, the free ends of the loops may be flexed apart to permit insertion and removal of the sheets.

If the user merely desires to insert a sheet on the top of the stack, he may swing the bound sheets and the plate to the position of Fig. 3 and insert the new sheet 22a on the top of the stack.

It will be observed that by my invention I have provided a very simple and extremely inexpensive means for flexing the free ends of the binder loops apart, which eliminates the necessity of complicated and relatively expensive means heretofore provided for this purpose.

I claim:

In a loose-leaf binder, the combination of a backing, a flexible, spring-like substantially cshaped binder loop fixed to said backing adjacent one of its free ends, and disposed to receive perforated sheets to be bound, and a susbtantially rigid plate normally disposed beneath said sheets against said backing and having a perforation adjacent one of its edges through which said loop extends, said perforation being sufficiently close to said one edge to permit of the marginal edge portion between said perforation and said one edge being freely received within said loop at all positions of said plate thereon, said plate being movable along said loop toward its opposite free end into a position in which it may be fulcrumed on said loop to flex the free ends of said loop apart.


REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,152,702 Brown Sept. 7, 1915 1,926,490 Levinsky et al Sept. 12, 1933 FOREIGN PATENTS Number Country Date 587,108 Great Britain Apr. 14, 1947

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1152702 *Jul 19, 1912Sep 7, 1915Clark J BrownNote-book and holder for same.
US1926490 *Apr 26, 1932Sep 12, 1933Charles MarsalRemovable stitching and binding device
GB587108A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2754826 *Oct 21, 1952Jul 17, 1956Willi BerberichDevice for interlocking loose leaves
US2909179 *May 10, 1957Oct 20, 1959Robbins Frederick PSpring binder
US2935986 *Oct 20, 1955May 10, 1960Montgomery Printing CompanyLoose-leaf retaining device
US3389937 *Aug 8, 1966Jun 25, 1968Henry Brumfield JohnWheel cover and retaining means therefor
US4374627 *Jan 13, 1981Feb 22, 1983Friedman Michael NBinder for perforated sheets or the like
US5154528 *Sep 30, 1991Oct 13, 1992Cananzey Gary MU-bind page holder
US5234232 *Dec 30, 1991Aug 10, 1993Stripbind, Inc.Bookbinding apparatus and method of binding sheets
US6247587Mar 24, 2000Jun 19, 2001Jackson YuStorage device
US20060175822 *Feb 9, 2005Aug 10, 2006Sheng-Yuan ChenEngaging structure of loose-leaf storing box
U.S. Classification402/19
International ClassificationB42F13/16, B42F13/00
Cooperative ClassificationB42F13/165
European ClassificationB42F13/16B