US2158056A - Ring binder - Google Patents

Description

May 15, 1939- c. c. cRUzAN 2,158,056

' RING BINDER Filed July 1s, 195e J0 l l i CHARLES C'. CRY/IAN Patented May 16, 1939 UNITED STATESA PATENT OFFICE RING BINDER Application July 18, 1936, Serial No. 91,289

11 Claims.

This invention relates to loose-leaf binders of the split-ring type.

Special objects of the invention are to provide a 1 safe, strong ring binder, which can be easily 5f? opened and closed and securely held in both the open and the closed positions, which will not accidently snap closed, to the injury of fingers or papers andrwhich on the other hand, will not open I and release the pages if accidentally dropped or the like, and which furthermore, with all such advantages, will be of relatively simple and inexpensive construction.

Theabove mentioned desirable objects are attained by the novel features of construction, comibinations and relations of parts hereinafter described, illustrated in the accompanying drawing and covered in the claims.

In the drawing, the invention is disclosed in one practical embodiment, but it will be under- !lstood that. the actual physical structure may be modified and changed in various Ways all within the true spirit and scope of the invention,

Fig, 1 is a broken plan viewshowing an embodiment of the Vbinder in an intermediate or partly .lopen position.

Fig. 2 is an enlarged broken and part lsectional view showing the binder in closed position.

Fig-.3 is apart sectional and end view of the binder in closed condition.

Fig. 4 is agenerally similar View showing'the binder fullyfopened.

In the` several views, the cooperating ring constituting elements are designated l, and are shown as being attached to and carried by base plates or levers 8, having hinging engagement within the inturned edge flanges 9, of the resilient channel shaped back member IIJ.

The inner opposing edges of the ring carrying plates 8, are shown as notched at II, to receive Vthe notched portions I2, of the intermediate couplers or connecting links I3. These links are rshown as having parallel sided guiding projections I4, operating through guide slots I5, in the cover plate I6, secured in arched relation over ffthe concave face of the back plate.

Bridge plates Il, engaged by flanges 9 of the back plate at opposite sides of the ring hinge plates 8, carry bearings I8, for a rock shaft I9, having cam or crank portions 20, engaged in the *transverse slots 2 I, in the connecting or equalizing links' I3.

A crank handle 22, at one end of the rock shaft I9, provides convenient means for operating the same and this handle may 'overlie the end bridge A'piece Il, as in Fig. 2, so that the latter will serve as a stop to limit'the turning movement of the rock shaft in either direction.

With the parts in the position shown in Figs. 2 and 3, that is, with the intermediate connecting link retracted and held so by the inwardly turned crank 20, the ring elements'areLrocked together and held so b-y the approximate dead center posi'- tion of thecrank. The binder'ringis thus locked against opening andcan only be released by turning the hand crank in the right-handed direction indicated by the arrow 23, in Fig. 3.

Similarly, when the handle 22 is rocked all the Way to the right as in Fig. 4, the crank 20`will stand approximately in the upper dead center position, locking the ring forming elements in theV open relation shown.

The hinge plates 8 of the ring elements form'in'A effect leverage extensionsrat the'lbases of thesev ring elements, enabling the intermediate connect ingvlink-to forcibly rock the ring elementsopeir` and closed with relatively small effort applied to' the hand crank 22. In coming-to the cl'osedre-V lation illustrated in Fig. 3,- the-tips of the ringv forming members may come together before the crank reaches the ends of its throw, in which event, the supportingplate or plates Il, may be sprung upward slightly substantially as indicated in this view, to add a certain spring force tending" to hold the rings closed and to compensate for such slight variation in size of parts as may occur in production manufacture.

The various parts of the device are rugged and the simple hand crank 22, the end of shaft I9 may be finished off with an angular head adapted to be turned only by a key of that particular cross-A The terms employed herein thereforeV section.r v are to be considered as used in a descriptive rather than in a limiting sense, except possibly" as limitations may be requiredV by state of the' prior art. Y

What is claimed is: 1. A ring binder, comprising end-to-en'd opa rotative member having a crank portionv operatively engaged with said link, cooperating binder ring constituting elements carried by said leversA and guide means slidingly confining said vlink to straight in and out movement between theY op-V posed in'ner'ends of said levers;

2. A ring binder, comprisingY cooperating bind- Ysiii .45* posed levers pivotally supported atr their outer ends, a link loosely interposed between and pivotally connecting the inner ends vof said levers,

er ring constituting elements, hi'ngedl'y suppoit-Y ed and having opposed leverage extensions, a link interposed between said leverage extensions, said link and leverage extensions having interlocking notched engagement with notched portions in l opposite edges of said link engaged in notched Vplate and cover plate, a supporting plate between portions in opposed inner edges of said leverage extensions, means for guiding said link in a straight in and out movement and a rotary member having a crank portion engaged with said link.

3. A ring binder, comprising cooperating binder ring constituting elements, hingedly supported and having opposed leverage extensions, a link interposed between saidleverage extensions, said link and leverage extensions having interlocking notched engagement, a rotary member having a crank portion vengaged with said link and a guide for confining said link to rectilinear movement.

4. A ring binder, comprising pivotally supported cooperating binder ring constituting elements having opposed base portions notched in their opposing edges, an intermediate link having notched opposite edges entered in the notches of the base portions of the ring constituting elements and a rotatively mounted member having a crank portion engaged with said link.

5. A ring binder comprising a channel shaped back having edge flanges, a supporting plate in said back and held by said edge flanges, opposed levers rockingly held at their outer ends by said edge flanges, a rock shaft pivotally'mounted on said supporting plate and having a crank portion vadjacent the inner ends of said oppositely dis-A posed levers, a link connecting the inner ends of said levers and `engaged on the cranked portion of said rock shaft and binder ring constituting elements carried byV said levers.

- 6. A ring binder comprising cooperating back said back plate and cover plate, a rock shaft journaledvon said supporting plate, opposed levers between said back plate and cover plate and pivotally supported at their outer ends, binder ring Y constituting elementsprojecting from said levers,

Y meniber interposed between and having notched opposite edges engaged over the inner ends of said levers for spacing said levers in rocking engagement with said supporting flanges and for coupling the inner ends of said levers together and thereby requiring the same to rock in unison, cooperating binder ring constituting elementsV projecting from said levers, supporting means bridging said flanges at the side of said rocking levers and a rock shaft journalled on said l supporting means and extending longitudinally of said binder substantially at a right angle to the plane of said binder ring constituting elements, said rock shaft having a cranked portion adjacent the inner ends of said oppositely disposed levers and extending through said coupling member for effecting in and out movement of the same necessary to rock the levers for relatively opening and closing the binder ring constituting elements.

8. A ring binder, comprising end-to-end opposed levers, a member coupling the inner ends of said levers together and thereby requiring the same to rock in unison, cooperating binder ring constituting elements projecting from said levers and a rock shaft extending longitudinally of said binder substantially at a right angle to the plane y of said binder ring constituting elements, said rock shaft having a cranked portion adjacent the inner ends of said oppositely disposed levers and extending through said coupling member for effecting in and out movement of the same necessary to rock the levers for relatively opening and closing the binder ring constituting elements, said rock shaft having an oscillating movement sufficient to carry the cranked portion to approximate dead center positions at the inner end outer limits of movement of the coupling member and resilient means for yieldingly retaining said rock shaft in said approximate dead center positions.

9. A ring binder, comprising end-to-end opposed levers, a member coupling the inner ends of said levers together and thereby requiring the same to rock in unison, cooperating binder ring constituting elements projecting from said levers and a rock shaft extending longitudinally of said binder substantially at a right angle to the plane of said binder ring constituting elements, said rock shaft having a cranked portion adjacent the inner ends of said oppositely disposed levers andv extending through said coupling member forvef-e fecting in and out movement of the same necessary to rock the levers for relatively opening and closing the binder ring constituting elements and a cover plate over said levers and intermediate coupling member, said coupling member having a portion operating through said cover plate as` a guide.

l0. A ring binder, comprising a channelshaped back having edge flanges, opposed levers rockingly held at their outer ends by said edge flanges, coupling members interposed between the inner opposed ends of said rocking-'levers and holding said levers spread apart in rocking `engagement with said edge flanges, supporting elements bridging the channel-shaped back at opposite sides of the rocking levers and supported by said edge flanges and a crank shaftjournalled on said supporting elements and having Vcranked portions extending through said coupling members for effecting movement of the latter to rock said opposed levers in binder ring opening and closing movements.

11. A ring binder, comprising a channel-shaped back having edge flanges, opposed levers rockingly held at their outer ends by said edge flanges, coupling members interposed between the inner opposed ends of said rocking levers and holding said levers spread apart in rocking engagement with said edge flanges, supporting elements bridging the channel-shaped back at opposite sides of the rocking levers and supported by said edge flanges and a crank shaft journalled on said supporting elements and having cranked portions extending through said coupling members for effecting movement of the latter to rock said opposed levers in binder ring opening and closing movements bers.

Y 'CHARLES C. CRUZAN.

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