US1071500A - Loose-leaf binder. - Google Patents

Description

0. L. BALDAUP. LOOSE LEAF BINDER. APPLICATION FILED SEPT. 14, 1907.

1,071,500. Patented Aug. 26, 1913.

2 SHEETS-SHEET 1.

TIE 11 wi immeo 3M0 Moi Cl/HFLEj L. BJLfiAl/F j M v ww v a E UNITED STATES rarnn CHARLES L. BALDAUEF, OF WEST HOBOKEN, NEW JERSEY, ASSIGNOR TO THOMAS NELSON &; SONS, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

LOOSE-LEAF BINDER.

Specification of Letters Patent.

Patented Aug. 26,1913.

To all whom it may concern:

Be it known that I, CHARLES LOUIS BAL- DAUF, a citizen of the United States, residing in the town of West Hoboken, county of Hudson, State of New Jersey, have invented new and useful Improvements in Loose-Leaf Binders, of which the following is a specification.

My invention relates to a device for binding loose leaves between two boards in such a manner that any one or more of the leaves may be readily removed, and others inserted. \Vhile this invention may be applied to loose-leaf ledgers, or scrap books, or to other similar articles, I have designed it particularly for use in connection with a loose-leaf dictionary, or encyclopedia, which is to be supplied from time to time with additional insertion pages of printed matter and from which pages may have to be removed from time to time.

In the drawings, Figure I shows in perspective the preferred form of my new binder; Fig. II is a sectional view of the same form of binder with pages inserted, the section being made through one of the binding posts shown in Fig. I; Fig. III shows a binder of another form, partially open to permit the insertion or removal of pages; and Fig. IV illustrates the locking device of the binders shown in Figs. I and III.

In Fig. I a is the front cover or side, and Z) the rear cover of my improved binder. These covers are preferably made integral with the back portion 0. Bars (Z, 6, preferably made of metal, are attached to the rear and front covers a, b respectively (Figs. I and II) by any suitable means. The stiffening of the covers is preferably interrupted just in front of the bars in order that the forward. portion of each cover may be readily opened and closed without affecting the position of the bars. The bar 6 is provided with a plurality of pins or bars f, extending parallel to the back portion 0. These bars are provided at their free ends with apertures 9 adapted to receive pins or projections 7L carried by the bar cl.

As shown in Fig. II a number of sheets of paper, such as the printed pages of a book, provided with perforations corresponding in position to that of the pins or bars f, may he slipped over said pins or bars f, and the pins or projections k may be slipped into the apertures 9 so as to lock the sheets of paper into place. In order to prevent the pins or projections h from slipping out of the apertures 9 when the book is handled, I provide a locking device. This locking device consists of a bar 6 preferably integral with the bar 6, and extending at right angles from one end thereof, and bar ct preferably integral with the bar cl and extending at right angles from one end thereof, the bars (Z and 6 extending in opposite directions, but lying in parallel planes. By means of a binding screw 6, inserted in bar 0, and extending through slot cl in bar cl I am enabled to lock the bars cl and e, and through them, the bars (Z and e, and the pins f, h, for the purpose described. Such a locking device is preferably provided at both the bottom and the top of the book. The head of the binding screw is preferably provided with a slot of suflicient size to enable the screw to be turned with the aid of a coin. The bars with their locking extensions constitute a frame comprising two oppositely disposed substantially U-shaped members, their backs being secured to the inner surfaces of the covers and the arms of one member slidably engaging with the arms of the other member.

In Fig. I I have shown the slot cl closed at each end. When the binding screw is loosened, the back portion 0 falls away from the pins f, into the position shown in Fig. IV. When the book is to be relocked the back portion 0 is pushed forward until the pins in are in registry with the apertures g, the pins are pushed down into the apertures, and the bars e, which have reassumed the position shown in Fig. I, are relocked by aturn of the binding screw. Instead of the pins f, h, I may employ channeled bars f and corresponding fiat bars h, as shown in Fig. III. Moreover instead of the back 0 shown, a telescopic back may be employed, one portion being integral with the front cover a and the other composed of two parts, each united to or integral with the back cover I). When the telescoping back is employed the slot of the locking device is made open at its lower end in order to permit the front cover a to be lifted away, and entirely removed from, the book proper. The locking device is adjustable, as will readily be understood, the range of adjustability being i in determined by the length of the slot and the Width of the back of the book.

I claim:

In a loose leaf binder, a frame comprising two oppositely disposed, substantially U- shaped members, a leaf holding pin mounted on the base of one of said members, means on the baseof the other of said members for engaging the end of said pin, and means for slidably and pivotally connecting the arms of said U-shaped members together and for securing the members in adjusted position,

whereby said members may be moved away from each other for releasing the pm engaging means and then swung on their pivotal 15 CHARLES L. BALDAUF.

Vitnesses FRITZ V. BRIEsEN, JOHN A. KEHLENBEGK.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C.

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