US1293807A - Loose-leaf binder. - Google Patents

Description

W. F. KROHIVIER.

LOOSE LEAF BINDER.

APPLICATION FILED MAR. so. 1918.

Patented Feb. 11, 1919.

WILLIAM F. KROHMER, OF CHICAGO, ILLINOIS, ASSIGNOR TO GOES LITHOGBAJPHING- COMPANY, OF CHICAGO, ILLINOIS, ACORPORATION OF ILLINOIS.

LOOSE-LEAF BINDER.

Specification of Letters Patent.

Patented Feb. 11, 1919.

7 Application filed March 30, 1918. Serial No. 225,623.

To all whom it may concern:

Be it known that 1, WILLIAM F. KROH- MER, a citizen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Loose-Leaf Binders; and- I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to certam improvements in the details of construction and arrangement of parts, for loose leaf binders. One of its objects is the production of a novel, simple and eflective binder for containing ordinary loose leaf sheets, bills, 1nvoices, or the like, whereby when the sheets are inserted and bound, the same will resent a more convenient article for handling, a more sightly appearance, and present no rough edges or projecting parts which otherwise would be liable to lacerate the hands of the user and cause inconvenience.

The objects and advantages of my invention will more fully appear from the following description and the a pended claims.

Referring now to the rawings:

Figure 1 is a perspective view of the inside portion of the binder, the two covers being spread apart, showing the binder in condition for the reception of the loose leaves.

Fig. 2 is a transverse, sectional view of a portion of the binder, after the leaves have een inserted and the parts permanently secured together.

Fig. 3 is a horizontal, sectional View, taken upon the plane of the dotted line 33 of Fig. 2 showing one of the binding posts over which the loose leaves are impaled.

In said drawing, the letter A represents one cover of the binder, B the other cover, suitably bound together by a flexible back 0. G represents the group of loose leaves.

The covers A and B are preferably made of the usual cardboard paper stock, the back C is of suitable binding cloth or fabric, which extends over the outside surfaces of .the backs A and B, as shown at l and 2, be-

ing secured to the covers A and B by mucilage or othersuitable means familiar to persons sklllod 1n the art. Secured to the inner edge 3 of the cover A, is a two member retaining strip, designated as a whole by the letter D. A similar strip designated as a whole by the letter E is similarly positioned with respect to the inner edge 4 of the cover B. The retaining strip D is composed of a relatively narrow strip 5 and a second strip 6, of card-board, thin metal or other suitable material, covered with cloth 7. This cloth extends onboth sides of the strip 6 and of the strip 5 in such form as to be secured together and to form a hinge at 8, and, again secured together to form a second hinge 9.

The cloth 7,. after forming a hinge 9 between the retaining member D and the cover A, is extended outwardly from the edge 3 and over a portion of the outside of the cover A beneath the cloth cover 1, as clearly shown at 10 in Fig. 2. Thus the cloth 7 forms a finish for the two portions 5 and, 6 of the retaining member D, forms also a hinge at .8 connecting these two members 5 and 6 together, and also forms a hinged connection between them and the cover A.

Similarly, binding cloth 11 is extended at 12 (Fig. 2) between the opposite inner rear portion of the cover B and its cloth covering 2, to form a hinge 13, and then passes around the board member 14 of the retaining member E, forming a hinge 15 between the member 14 and the second member 16 of the dual retaining member. E.

F is a stud or pin provided with a sharpened, bifurcatin end adapted to penetrate the loose leaves so that the latter may be impaled upon the pin in the usual way. At the other end of the pin F is a suitable head or shoulder f. The pin F passes through an aperture in the member 14 and then said member is folded over on the hinge 15, to and against the member 16. Suitable adhesive means, such as glue, for instance, indicated by the heavy line at 17, will cement or glue thetwo members 14 and 16 together, in the manner shown in Fig. 1. Thus the head or retaining shoulder f of the pin, is entirely concealed, and the retaining member E is thus made more firm and strengthened by the fact that its two parts 14 and 16 are secured together.

A suitable aperture 18 is made in the part 5 of the other retaining member D, so located as to register with the pin F when through the aperture 18 and then the points of the pin F are spread in opposite directions, along the back portion of the part 5,

as indicated more clearly in Fig. 3; the

sharpened bifurcated end of the pin F being spread or separated, as shown.

After the oints are thus spread apart, the part 6 o? the retaining member is folded over upon the hinged line 8 and se-' cured to the part 5 by cement or other suitable means as indicated by the heavy line 19. Thus the retaining member D becomes narrowed and strengthened by having its two parts, 5 and 6, secured and cemented together, and the ends of the pin F become covered and concealed by the part 6.

This makes a strong, durable and neatly appearing device, and permanently secures the bound leaves G between the two retaining members D and E.

A feature of this construction is that when the leav'es'G are thus permanently bound in between the retaining members D and E,

4 the three parts form in themselves a unitary and complete structure, with a protecting, fieziible back unattached directly thereto; at the same time the covers A and B are flexibly 'attached both to the unitary binding structure and to the back G'by means of the hingedcloth binding connection described.

Thus it will be found that the book has great convenience in handling, at the same time great stability in the matter of holding the loose leaves G in permanently bound condition.

Of coure, slight changes may be made in the details of construction, as for example, in the head 7 of the pin F. This head is shown as relatively flat and thin, but it will be recognized that the same may be of other form or contour, so long as it serves the function of holding the pin F to the part 14:. Likewise, slight structural changes may be made in the binding cloth arrangement, without departing from the spirit or principle of the invention; the form shown,

however, is recommended as preferable,

based upon actual use thereof.

I claim as my invention:

1. A permanent loose leaf binder comprising a binding post having one end sharpened and bifurcated, a shouldered head on the other end of said post, a binding strip in two sections hinged together, a blnding post aperture in one section, the post being held in the apertured section by folding the unapertured section over the post head and to a flexible back member, a binding post;

having at one end a head, the other end of said post being sharpened and bifurcated, a pair of binding strips, each of two sections hingedly secured together along their longitudinal adjacent edges, one section of each strip being hingedly secured to a cover adjacent theback member, also an aperture for the binding post in each of said sections hinged to the back member, the free section, of each binding strip being adapted to be folded over the section to which it is hinged to cover and conceal the end of the post, and adhesive means for permanently securing said folded over sections upon the sections to which they are hinged.

In testimony that I claim the foregoing as my invention I aifix my signature in the presence of two witnesses, this 23rd day of March A. D. 1918.

WILLIAM F. KROHMER.

Images