US2123625A - Binding device - Google Patents

Description

July 12, 1938.

c. E. EMMER BINDING DEVICE Filed Sept. 23. 1935 '1 Yak/was: CHARLES E.- Emma @M y W. 3 M

Patented July 12,1938

Charles E. Emmer, Chicago, [1]., assignor to Cercla, Inc., Chicago, 111., a corporation of Illinois Application September 23, 1935, Serial No. 41,679

4 Claims. (Cl. 281-25) Thisinvention relates to binding devices.

One object of this invention is to provide a binder for perforated sheets, pamphlets or the like, which is formed of a single piece of suitable material, such as sheet metal, and which can be secured in binding relation with facility and economically by inter-engagement of integral portions of the device.

Another object of the invention is to provide a binding -device preferably formed of a single piece of material, having a plurality of arms of ring form which are integral with a longitudinal strip to which the free ends of the arms are attached after the latter have been passed through perforations in the sheets, pamphlets or the like, to be bound. I

In the accompanying drawing illustrating exemplary embodiments of the invention,

Figure 1 is a perspective view of one form of the improved binding device.

Figure 2 Is a perspective view illustrating a different mode of securing the binding device in closed relation. v

Figure 3 is a further modification of the invention.

Figure 4 is a transverse sectional view of the structure of Figure 3 shown in closed position. Figure 5 is a perspective view of an additional form of binder. I

Figure 6 is a sectional view through a number of sheets bound by the device shown in Figure 5.

Figure 7 is a perspective view of a further modification.

Figure 8 is a transverse section of sheets and covers bound by the device shown in Figure '7.

Figure!) is apartial development of the binder.

In Figures 1 to 6 inclusive the device comprises a longitudinal strip III from a lateral edge of which extend a plurality of parallel arms II which preferably are given the ring shape shown in Figure 3, prior to the insertion of the arms through perforations in the sheets or articles to be bound, such as perforations I2 in the sheets I3 and covers I4, illustrated in Figure 6.

The strips III and arms II may be formed of sheet metal, or a plastic such as ,celluloid or other suitable material. After, the arms II have been passed through the perforations in the sheets to be bound, the ends Ila, which are directed outwardly of the circle defined by the arms, are pressed into contact with and secured to the strip III to form preferably a permanent binding for the sheets.

In Figure l the strip I is shownas being of a width greater than the length of the plane ends Ila. of the arms. After insertion of the arms through the perforated sheets the plane ends IIa of the arms II are pressed into contact with the strip I0 and the outer margin Illa of the REISSUED FEB 6- 1 940 latter is then folded over the ends Ila to secure the arms in closed position.

In Figure Z'the corresponding parts are identified bythe same reference characters employed in Figure 1, the major difierence between the two forms residing in the fact that in the form shown outer portions of the former are folded over the edge of the latter to hold the binder in closed position after the sheets to be bound have been assembled in the binder.

Any suitable tool or machine may be employed for bending the margin "id of the strip overthe ends Ila. of the arms, as shown in Figure 1, or in folding the ends Ila of the strip ID as shown in Figure 2.

.-In the form of the invention illustrated in Figure 3 the ends Ila of the arms 'II are provided with perforations I and the strip I0 has integral lugs I6 struck upwardly therefrom. The lugs are adapted to pass through the respective perforations I5 when the sheets to be bound have been -assembled on the arms and the latter pressed into contact with the strip. The lugs I4 are then bent over into contact with the upper surface of the ends Ila to retain the latter in close contact with the strip In as illustrated in Figure 4.

In Figures 5 and 6 the strip I0 is provided with perforations or slots I1, and the ends of the arms have short, outward-1y directed portions I Ib which terminate in portions I I0 which are disposed substantially at right angles to the portions III) as shown in dotted lines in Figure 5. When the sheetshave been assembled on the arms, the ends I Ic arepassed through the slots I1 and bent over into-contact with the lower face of the strip IE] toretain the binder rings in closed position, as illustrated infull lines in Figure 5 and in Figure 6.. The end portions He thus function as in Figure 2 the plane ends Ila are of a length .greater than the. width of the strip I0 and the lugs, in much. the same manner as the lugs I6 a single piece of material which in this instance should be resilient, the binder comprising a strip I8 having arms I9 integral with one edge thereof.

The arms terminate in hooks 20 adapted to engage the inwardly turnedhook-edge 2| of the back Hi to retain the ring-like arms I9 in closed position after the perforated sheets or sheets and covers 22 and 23 have been assembled thereon as illustrated in Figure 8.

In this. form of the invention the arms can be compressed into and released from engagement with the retaining edge 2|. This type of binding device can thus be used for temporarily bind-. ing sheets or the like if desired. The strip l8 preferably is convex, as shown at its rear surface and provides space for aflixing title, volume and library or other indicia, if desired:

In the forms of the invention above described, the strips l and the ends of the arms engaging the same are disposed preferably between one cover of the book and the bound sheets although these portions of the binding may be disposed in the middle of the book between the sheets or positioned at the rear edge of the bound sheets, if desired. However, a neater binding is provided and the covers can be opened back to back by disposing the strip and arm ends beneath one cover, and the assembly of the sheets upon the binder arms is also facilitated. For this reason the strips I0 and the engaging ends lld'of the arms II when in contact with a cover'preferably lie in a plane parallel with the covers. The strip and interlocked ends of the arms therefore preferably lie in a non-radial plane of the circle or cylinder defined by the arms. Where the strip and arm ends are to lie midway of the bound sheets or are to extend rearwardly from the bound edges of the sheets they are disposed in a radial plane of the circle defined by the arms.

The arms and strips of the above described devices can be formed of relatively thin material such as sheet metal. In order that the ringshaped arms when formed of thin material shall be sumciently rigid to retain their shape and that rough edges shall be avoided, it is preferred to form the arm blanks with side flanges lid as illustrated in Figure 9. After the blank has been formed and prior to shaping the arms in curved or arcuate form, the flanges lid are folded inwardly of the arms as shown at the right end of the'figureto increase the rigidity or stiffness of the arm when the latter has been given the ring form. This double thickness of the metal thus increases the ability of the arms to retain their shape during use and provides smooth rounded edges at the sides of the arms which require no bufling to remove the burrs and sharp edge. The smooth rounded longitudinal edges of the arms are also more easily threaded through the perforations of the sheets in assembling the latter and facilitate turning the bound sheets during use.

The various forms of the invention illustrated in Figures 1 to 8 inclusive preferably will be provided with arms formed as above described. It will be noted that the flanges lld terminate short of the free ends of the arms so as to avoid increasing the thickness of the material at the points where the arms are attached to the respective' integral strips or back members.

While I have shownand described several means for attaching the ends of the arms to the strip which render the binding device economical and convenient both as to manufacture and use, I do not wish to be restricted specifically thereto except as so limited by the appended claims.

I claim:

1. A book of perforated sheets having a binding comprising a strip of sheet metal having arms extending from .one' longitudinal edge portion thereof and of ring-like form extending through the perforations of the sheets, one end of each arm being integral with said longitudinal edge and the other ends of the arms being directed outwardly from the respective ring-like portions and contacting a surface of said strip, said'strip being of a width greater than the length of said outwardly directed ends and having the other longitudinal edge portion thereof folded over into close contact with said ends to secure the ends between'said portions of thestrip to retain the rings in fully closed relation.

2. A book of perforated sheets having a binding comprising a strip of sheet metal having arms extending from one longitudinal edge portion thereof and of ring-like form extending through the perforations of the sheets, one end of each arm being integral with said longitudinal edge and the other'ends of the arms being directed outwardly from the respective ring-like portions and contacting a surface of said strip, said strip being of a width greater than the length of said outwardly directed ends and having the other longitudinal edge portion thereof folded over into close contact with said ends to secure the ends between said portions of the strip to re-' tain the rings in fully closed relation with the ends of the curved portion of each arm in substantially abutting relation, each said arm having integral flanges on the longitudinal edges thereof folded over a face of the arm to stiffen the same and to provide smooth edges substantially coextensive with the curved" portion of the arm. I

3. A book of perforated sheets having a binding comprising a strip of sheet metal having arms extending from one longitudinal edge portion thereof and of loop-like form extending through the perforations of the sheets, one end of each arm being integral with said longitudinal edge and the other ends of the arms being directed outwardly from the respective loop-like portions and contacting a surface of said strip, said strip being of a width greater. than the length of said outwardly directed ends and having the other longitudinal edge portion thereof folded over into close contact with said ends to secure the ends between said portions of the strip to retain the loops in fully closed relation. 4. A book of perforated sheets having a bind ing comprising a strip of sheet metal having arms extending from one longitudinal edge portion thereof and of loop-like form extending through I the perforations of the sheets. one end of each arm being integral with said longitudinal edge and the other ends of the arms being directed outwardly from the respectiveloop-like portions and contacting a surface of said strip said strip being of a width greater than the length of said outwardly directed ends and having the other longitudinal edge portion thereof folded over in:-

to close contact with said ends to secure the ends 1 CHARLES E.

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