US689110A - Loose-leaf binder. - Google Patents

Description

N0. 689MB. Patented Dec. l7, I90l.

F. X. MUDD.

LDUSE LEAF BINDER.

(Application filed June 25, 1901.) (In Modal.) ZSMMs-fiheat I.

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No. 689,ll0.

F. X. MUDD.

LOOSE LEAF BINDER.

(Application filed June 25,1901.) (In llodal.)

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FRANK X. MUDD, OF CHICAGO, ILLINOIS.

Loose-LEAF BINDER.

SPEGIFIGAZ'IQN forming part of Letters Patent No. 689,110, dated December17, 1901. Application filed June 25,1901. Serial No. 65,919. .No model.)

To all whom it may concern:

Be it known that I, FRANK X. MUDD, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Loose-Leaf Binders, of which the following is a specification.

My invention relates particularly to automatically-lockingadjustable binders; and my primary object is to provide a practical locking device which will operate to keep the binder-sections firmly connected regardless of the degree of separation thereof and of the state of fullness of the binder.

My invention is illustrated in its preferred form in the accompanying drawings, in which-- Figure l is an inner perspective view of the lower back section; Fig. 2, a similar view of the upper back section; Figs. 3 and l, enlarged broken longitudinal sections of the binder, taken as indicated at the corresponding lines of Fig.1; Fig. 5, a broken section taken as indicated at line 5 of Fig. 4; Figs. 6 and 7, sections taken as indicated at the corresponding lines of Fig. 4:, and Fig. 8 a key for unlocking the locking device.

A represents an upper cover-section; B, a lower cover-section. Preferably there are employed an upper clamping-bar A in connection with an angle-iron A and a lower clamping-bar B in connection with an angle-iron B The iron A has a forwardly-turned flange a, to which the bar A is attached, a downwardly-turned flange a, which forms a portion of the rear wall of the binder, and end flanges a formed with guide grooves a The angle-iron B has a forwardly-turned flange b, to which thebar B is attached, an upwardly-turned flange l), which forms a portion of the rear wall of the binder, and end flanges 19 which engage the grooves a The two angle-irons telescope with each other, as appears clearly from Figs. 3 and 4. Projecting downwardly from the flange a are tubular studs or posts a which telescope with smaller tubular posts N, which project upwardly from the flange Z). Confined within said hollow posts are coil-springs 12 which tend to keep the cover-sections separated.

Depending from the flange a of the upper angle-iron and connected with the flange 0 thereof is a sheath O,-comprisinga curved or half-cylindrical front portion 0 and divergent sides 0'. Within said sheath is a stud C, journaled in the flange a of the upper angleiron, said stud being provided at its upper end with a rigidly-attached key-receiving head 0 which is countersunk in the upper surface of the flange a and is provided with a projection 0 which moves in a half-annular groove 0, with which the flange a is provided. As shown in Fig. 7, the stud O has a curved surface 0 flanked by rearwardly-convergent surfaces 0 thelatter surfaces being provided, as shown in Fig. 5, each with a series of indentations, the indentations of one row being staggered with relation to the indentations of the other row. vided at its lower extremity, on one portion of its cylindrical surface 0 with an indentation 0 The indentations have abrupt shoulders at their lower portions, as shown.

Projecting upwardly from the flange b of the lower angle-iron and connected with the flange 1) thereof isa sheath D, having a curved front wall (1, flanked by rearwardly-divergent walls d. Pivoted to the inner surfaces of the divergent walls (1 are spring held pawls 61 The pawls (Z are located in the same horizontal plane at or near the upper end of the sheath B and engage the indentations on the divergent surfaces 0, the pawls alternating in effectively locking the upper clamping bar against withdrawal. The binder -sections are suitably covered with leather or cloth cemented in place, as shown. The key-receiving head a of the stud O is provided with perforations, as shown, for receiving the key.

The manner of use will be readily understood by those skilled in the art. The leaves to be bound are suitably perforated or notched at their binding-margins to receive the bindlug-posts and the central sheaths of the looking device. Any desired number of leaves are put in place and the upper cover-section pressed downwardly, whereupon the pawls d serve to prevent retraction. Owing to the arrangement of the pawls and notches, one of the pawls will always be in position to engage a notch, thereby preventing any looseness. When desired, the stud C may be turned through the medium of a key till the Said stud U is further propawls d engage the cylindrical surface 0 of said stud, whereuponthe upper binding-section can be lifted till the notch c is engaged by one of the pawls. This prevents entire separation of the sections. When desired, however, the key may be again employed to disengage the notch c from the pawl with which it chances to be in engagement, and thereupon the binder-sections may be entirely separated. The ends of the curved groove 0 serve as stops for the projection 0 When the projection c is at one end of said slot, the pawls 01 will engage the notches on the surfaces 0, provided the upper cover-section is at the right height, and when the projection c is at the other end of the slot 0 the pawls are in position to engage the surfaces 0 one of the pawls being then in position to engage the notch 0 when the same is encountered. Assuming the notch c to be engaged by one of the pawls, the parts may be disengaged by returning the projection c to its first position, whereupon the pawls will encounter the smooth surface above the rows of indentations on the surfaces 0.

As appears from Figs.1, 3,and 4,the flanges a and b are reinforced or strengthened at their central portions to prevent fieXure. This is accomplished either by making the flanges 1. In a loose-leaf binder, the combination of two adjustably-connected clamping-bars, a sheath connected with one of said bars and provided with two pawls, and a rotatable stud connected with the other of said bars and provided over a portion of its surface with indentations with which said pawls engage, said pawls having such location with reference to the indentations as to serve alternately in effectively locking the parts together, substantially as and for the purpose described.

2. In a loose-leaf binder, the combination of two adjustably-connected clamping-bars, two pawls supported from one of said bars and having locking surfaces at the same height, and a rotatable stud'connected with the other of said bars and provided with two convergent surfaces bearing two rows of indentations, the indentations of one row being staggered with relation to the indentations of the other row, substantially as and for the purpose described.

In a loose-leaf binder, the combination of two adjustably-connected clamping-bars, a sheath projecting upwardly from one of said bars,said sheath having two rearwardlydivergent Walls, pawls pivotally connected to said divergent walls within the upper end of said sheath, a sheath projecting downwardly from the other clamping-bar, and a rotatable stud within said sheath having two forwardlydivergent surfaces, each equipped with a row of indentations, the indentations of one row being staggered with relation to those of the other row, said sheaths having telescopic connection, substantially as described.

FRANK X. MUDD.

In presence of- D. W. LEE, ALBERT D. BAooI.

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