US2322176A - Ring binder - Google Patents

Description

INVENTo E SWE 9.0m R Tm D E cm RING BINDER Filed Nov. 11, 1942 C. D. TRUSSELL .d ul.

June l5, 1943.

Patented June 15, 1943 RING BINDER Clarence D. Trussell, Poughkeepsie, N. Y., assignor to Trussell Manufacturing Company, Poughkeepsie, N. Y., a corporation of New York Application November 11, 1942, Serial No. 465,287

(Cl. 12S-1) 3 Claims.

The invention herein disclosed relates to ring binders and particularly to those of the type disclosed in copending application for patent Ser. No. 452,111, filed July 23, 1942, in which ring elements of non-metallic material are attached to and carried by a back construction also of vnonmetallic material.

Objects of the present invention are to improve the design and structure of the back and ring forming elements of the combination, to render the detachable connection between them more secure and at the same time, more readily operable and to support the sheets or leaves in better relation, particularly to hold and confine them lagainst too great looseness or freedom of movement.

Other desirable objects will appear or are set forth in the following specification, wherein the novel features of the invention are described and claimed.

The drawing accompanying and forming part of the specification illustrates certain practical embodiments of the invention, but the structure may be otherwise modified and changed all within the true intent and scope of the invention, as hereinafter defined and covered in the claims.

Fig. l is a plan View of a book having features of the invention incorporated therein, with portions broken away and shown in section.

Fig. 2 is a broken end view of the same on a larger scale.

Fig. 3 is a bro-ken transverse sectional detail as on line 3-3 of Fig. 1.

Fig. 4 is a broken longitudinal sectional View on substantially the plane of line I--ll of Fig. l.

Fig. 5 is an enlarged broken sectional detail of one of the flexible ring forming elements.

Fig. 6 is a broken perspective view of a modified form of grooved and notched back member.

In the embodiments of the invention shown, the leaves l, are releasably held by rings 8, of leather, vulcanized ber, plastic or other flexible or semi-flexible non-metallic material detachably secured to a back structure composed of inner and outer members I il, of wood or similar nonmetallic material.

'I'he inner back member is shown in Fig. 3 as having a longitudinal groove II, to receive the rib I2, of the outer back member and the cover structure I3, is shown as having flanges I4, held between the two parts when they are secured together as by means of rivets indicated at I5, Fig. 1. Because of flexibility, durability and other qualities, leather may advantageously be used as the material for the rings. Round leather belting has been used with advantage. This material may be reinforced, particularly at the ends, by drilling openings I6, therein and then driving in lengths of wire or like stiffening elements I'I, substantially as indicated in Fig. 5.

When rmly anchored in the back, these stiffened and reinforced ends hold the intermediate arched portion of the ring stretched in a tensioned firm condition. These rings may flatten out across the top into a substantially oval form, as indicated in Fig. 2.

The ends of the ring elements are secured to the back piece in the illustration, by providing inclined or transverse grooves I3, in opposite sides to reduce cross-sectional dimensions and to leave the full diameter head portions I9, at the extreme ends and by providing the inner member of the back with undercut transversely eX- tending slots of the keyhole type, to receive and hold such end portions.

In Fig. 1, the slots are shown as of a cruciform design, with narrow oppositely extending transverse portions 20, connected at the center by the wider longitudinally extending portions 2|, the central wider portions being large enough to receive the full cross-sectional dimensions of the rings and the narrower portions being of a width to receive and closely hold the reduced crosssectional portions at I8.

The inner back member 9, is shown as beveled or ridged at 22, to form oppositely inclined longitudinal faces 23. in these reversely inclined faces, usually at the same inclination, substantially as indicated in Fig'. 3.

In the modified form of fastening illustrated in Fig. 6, a continuous longitudinal groove 24, is cut or formed in the central ridged portion of the back piece, with communicating reversely inclined channels 25, at opposite sides, providing the necessary undercut and leaving the thin flanges 26, which are transversely notched at 2l, to provide the narrow slots for the reduced neck portions of the rings.

To take some of the endwise load off the flexible rings and to prevent the stack of leaves from slipping loosely back and forth in the binder, confining abutments may be provided, substantially as indicated at 28, Fig. 4, preferably of wood or other non-metallic material, mortised at 29, to t over the correspondingly shaped ends of the inner back member and so secured by adhesive orv other means. If fastened in overlapping engagement over the ends of the back members, these end pieces may serve to brace and fasten the back The ring holding slots are cut members together, thus acting as reinforcements, as well as end abutments for the leaves.

The wires or stiiening elements inserted in the ring members have the further elect of solidifying the reduced neck portions of these members, so that they will fit and be more rmly held in the cross slots of the back piece. The leather has a certain resiliency or springiness and also a frictional quality aiding in holding the ring ends rmly anchored in the back piece. This resiliency also enables the ring ends to be easily slipped into and out of place in the cross slots.

The Wires l1 may be shaped to the desired curvature so as to give the ring ends the desired permanent curvature, substantially as indicated at the right in Fig. 3.

What is claimed is:

l. A ring binder, comprising a back member having a central depression, recesses extending transversely in opposite directions from the bottom of said central depression and notches narrower than said central depression and recesses extending transversely from the tcp of said central depression over said recesses` and ring elements having head portions at the ends of the same larger than said notches but small enough to enter said central depression and side recesses and having reduced neck portions adjoining' said head portions and of a size to enter said notches.

2. A ring binder, comprising a back member having a central longitudinally extending groove in the fact of the same, recesses extending transversely from the bottom of said longitudinal groove and notches extending transversely from the top of said longitudinal groove into said recesses, said notches being narrower than said recesses and narrower than said longitudinal groove, and ring elements having head portions at the ends of the same which will enter said longitudinal groove and pass into said recesses but too large to enter said notches and having reduced neck portions adjoining said head portions and of a size to enter said narrower transverse notches.

3. A ring binder, comprising a back member having a central longitudinally extending groove in the face of the same, longitudinally extending undercut channels at opposite sides of said groove and longitudinally spaced transverse notches extending from said longitudinal groove over said undercut channels, said notches being narrower than said longitudinal groove and ring elements having reduced neck portions small enough to enter said side Inotches and larger head portions of a size to enter said longitudinal groove and pass transversely into said side channels.

CLARENCE D. TRUSSELL.

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