US1733956A - Loose-leaf binder - Google Patents

Description

Oct. 29, 1929. c. H. FRANZ, JR

LOOSE LEAF BINDER vFiled Auges, 1923 a my Patented Oct. 29, 1929 TES PATET CHARLES II. EEANZ, .IE.,VE MILWAUKEE, WISCONSIN LOOSE-LEAF BINDER A Application led August 25, 1928. Serial No. 302,034; .I

' This invention relates to a loose leaf binder,

V In loose leaf binders, as heretofore constructed, two general types have been employed. One of these types uses a locking slide for locking the binder closed, and another type uses adjustable screws for locking the binders together, and holding the sheets. This invention is designed to provide a loose Aleaf binder, which has the advantages of both i 1o a quickly operable locking slide, and also that of the adjustable screws, so that `the device may be quickly locked or unlocked, and also Vso that the screws may be adjusted to ,exert any desired degree of pressure upon the en! Y closed sheets.

This invention is an improvement over that disclosed in my co-pending application for loose leaf binder, Serial No. 35,084, iiledJ une 5, 1925.

Further objects of this invention are to provide a loose leaf binder, in which the screws are provided with heads accessible outside of the binder after the locking slide has been operated to lock the binder parts together,

i 79.5 so that the screws may be adjusted, after the locking has taken place, from the outside of the binder, and a further object is to so construct the screws that they provide shoulders immediately below the constricted necks so Eso that the top of the binder cannot drop down out of place during positioning and so that the slide is, in all adjustments held in correct alinement with the constricted necks of the SCGWS.

An embodiment of the invention is shown in the accompanying drawings, in which:

Figure 1 is a fragmentary Vertical, sectional view through a portion of the binder, such view corresponding to'a section on line 1-41 of Figure 2.

Figure 2 is a sectional view on the line QF -2 of Figure 1.

Figure 3 is an enlarged sectional view on line 3-3 of Figure 2. f

Referring to the drawings, it will be seen that the binder is provided with a pair of covers which are flexibly joined to the backy of the binder. For convenience, one of the covers, as indicated by the reference character 1, will be termed the bottom cover, and the Vvided with an enlarged integral collar 13 and Awith a manipulating head 14 of lesser diame- Vis provided with areinforcing eyelet 17 which other, indicated by reference character 2, the top cover. These covers are joined to slidablyas-sociated back portions 3` and '4, arranged at right-angles to the closure planes of the covers. lThese 'back portions are reinforced by means `of the L-shapied metal reinforcing plates 5 and 6. Suitable filling members are employed in the covers, as indicated at 7. In addition to this, each cover ispro` vided with a flexible reinforcing strip 8, and the faces are finished by the cover strips or outer sheets 9. The filling strips 7 stop short at a slight space from the backV of the binder to provide the requisite flexibility at this point in the well known manner.

The bottom of the binder is provided with a plurality of tubular posts 10 which are riveted to the metal reinforcing plate 5, as shown in Figure 1, and if desired a filling strip 11 may be positioned 4below the bottomof the posts. These tubular posts 10 extend upwardly and arev preferably constricted at their upper ends and threaded to receive the adjustable screws 12. These screws are each proter than the collar. The' head 14 and the collar 13Yof these screws are separated or spaced apart by al constricted neck 15. All parts of the screw are preferably formed inte- 80 grally. y

The upper cover is provided with a metallic rectangular casing-16 which may be secured to the metal member 6, and which is covered by the members 8 and 9, as shown in Figure 1. The upper binder cover is pros vided with apertures completelytherethrough y to permit the passage ofthe head 14 through such apertures. Preferably the upper binder may be formed of metal, if desired.

The rectangular guide 16 is provided with slots 18, vopening from its inner edgeat regular intervals. Itis to be noted that the rectangular member 16, or guide, is provided with a locking slide 19, having openings 20 through its forwardedge .to be aligned with the Slots 18 when required and iszalso provided with a slotp21'which extends longitudinally of the slide. Whilethis construction is not essential to this type of binder, it is so constructed that it can be used with other types as well as this one, thus reducing the cost of construction.

It is desirable, in these binders, to provide them with a compression plate 26 equipped with tubular, downwardly extending members 27 adapted to slide'over the screws and posts, as shown in Figure l.

In using the device, a stack of sheets, i'ndicated generally at 28, is positioned upon the posts and the plate 26 slipped into placerover the posts. j Thereafter the cover is positioned and the slide is locked to the screws by sliding it laterally of the cover so thatthe constricted neck portions of the screws,- as indicated at l5, are received in the constricted slots 2l of the slide (see Figure 2). Vl`hereafter the screws are tightened by any suitable means, for example a coin, until the requisite pressure is exerted upon the sheets. It is vto be noted in this connection that the screws are freely accessible from the outside of the binder after the binder is locked.

The' sheets are thus held not merely by the posts, but also by definite and positive frictional grip exerted at their attached end, thus avoiding any possible chance of the sheets tearing away from the posts. when they are subjected inadvertently to unusual strains. Also, it is to be noted that the speed of the quickly detach-able binders ispreserved by this construction and the advantages of the screw-type of binder are at the same time secured. y'

Grdinarily the device is so adjusted by means of the screws that frictional pressure is exerted upon the sheets and also upon the slide. The slide cannot be inadvertently detached, but may be detached under these conditions by merely pressing downwardly with one hand upon the top of the binder. Y However, if it is desired to insure the locking of the slide against any motion whatsoever, the screws. may be tightened to a greater extent to thereby firmly lock the slide against motion. f

, Further, it is to be noted that the device is extremely simple and rugged andis easily produced. h Y Y Although the invention has vbeen described inl considerable detail, such description is in- 1 tended as illustrative rather lthan limiting as the invention may be variously embodied and Y as the scope of such invention is to be determined as claimed.

l I claim n 1. A loose leaf binder comprising an upper and a lower cover, means carried by the lower cover for adjustably joining said covers, said means including screws, means carried by the upper cover for quickly locking such upper cover to said screws, said upper cover being apertured to expose the heads of said screws, said screws having collars spaced downwardly from the heads for preventing the upper cover from sliding downwardly upon said screws beyond a predetermined distance.

2. A loose leaf binder comprising an upper and a lower cover adapted to receive sheets between them, a plurality of posts carried by said lower cover, adjustable screws threaded into the upper ends of said posts, said screws having heads and enlarged collars spaced downwardly from said heads, a guide carried by said upper cover and having openings through which the heads of the screws may project, said openings being of a size to prevent the passages therethrough of said collars, and a locking slide carried by said guide for engaging and locking the screws between the heads and collars, said upper cover having apertures arranged to expose the heads of said screws.

have hereunto set my hand at Milwaukee, in

, A j In testimony that I cla1m the foregoing I the county of Milwaukee and State. of Wisy consin.

CHARLES H. FRANZ, Jn.

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