US1964252A - Loose leaf binder - Google Patents

Description

June 1934- J. c. DAWSON 1,964,252

LOOSE LEAF BINDER Filed Dec. 27, 1932 2 Sheets-Shoot. J.

M71107": 2 James G. Dawson June 26, 1934. J. c DAWSON LOOSE LEAF BINDER Filed Dec. 27, 1932 2 Sheets-Sheet 2' Patented June 26, 1934 UNITED STATES PATENT OFFICE" Elma N. Dawson, Webster Groves, Mo.

Application December 27, 1932, Serial No. 648,915

4 Claims. (01. 129-23) The invention relates to loose leaf binders in which the sheet-carrying prongs are in approximately circular form and are carried by a rotative shaft. The objects of the invention are to simplify the construction and operation of the binder, and to provide an improved locking device therefor.

A preferred embodimeht of. the invention is hereinafter described, and is illustrated in the accompanying drawings. in which Figs. 1 and 2 are detail perspective views of the binder when open, the contents and binding mechanism being differently positioned in the two figures;

Fig. 3 shows in perspective views of the various parts of the binder mechanism detached;

Fig. 4 is a sectional detail on the line 44 of Fig, 5;

Fig. 5 is a detail longitudinal section of the binder in the plane of one of the sheet-carrying arches;

Fig. 6 is a detail longitudinal section ofthe binder when open, the binder mechanism being shown in different position from that of Fig. 5.

The binder comprises a cover having the side plates 10, 11, joined together by a back section 12, united'to the side plates by means of flexible hinges 13, 14.

The sheet-carrying prongs .15, 16 are in the general form of open rings. One end 1'1 of the ring is turned in to radial position and is united to a rotatable shaft 18, as by welding, the ring being so positioned that its radial plane is normal to the axis of the shaft. The .other or outer *end portion 19 of the prong is tangential with reference to its circumference. v

The shaft 18 is iournaled in a pair of hinge brackets 20, 21, each having a base section '22, apertured to accommodate rivets for attaching it 49 to the inner face of one of the cover plates, as 10, and an upstanding section 23, the upper end of which is rolled over to form the journal bearing, as indicated at 24, for the shaft. Preferably these hinge brackets are arranged in line with the sheet-holding prongs, and consequently are transversely recessed, as shown at 25, for their accommodation. The length of the upstanding sections 23 of the hinge brackets is approximately equal to the radius of the sheet-carrying prongs.

50 This type of binder is commonly employed for carrying bank checks and the like and is usually provided with a cover sheet or plate, approximately the length of the check stubs, and serving to cover them when the binder is open.

56 Such a plate is shown at 26, and is carried by a pair of hinge brackets 27, 28, the base sections of which are riveted to the plate, while the hinge leaf of each is rolled over, as indicated at 29, to form an eye, or journal bearing, for the shaft 18. Preferably the hinges of the plate 26 are located between the hinge brackets 20, 21. The length of the hinge leaves of the brackets 27, 28,

is approximately equal to the radius of the sheetholding prongs, and when the binder is open and the plate 26 is thrown backward, it lies in contact with the binder cover plate 11, as shown in Fig. 6. When the binder is closed, the plate 26 occupies the position indicated in Fig. 5.

One end of the shaft 18 is flattened, as indicated at 30, to engage within an eye 31 of complementary form in the upstanding arm 32 of an L-shaped locking bracket 33, which is riveted to the back plate 12 of the binder. The arm 32 of the locking bracket is elastic and in normal position is in engagement with the end 30 of the shaft, thereby preventing the rotation of the latter. To release the shaft from the locking plate the latter is forced backwardly to the dotted lines position of Fig. 4, whereupon the shaft, together with the sheet-holding prongs, may be turned be- 30 tween the positions of Figs. 1 and 2.

When in the position of Fig. 2, the sheets34 are threaded upon the now upstanding end portions 19 of the prongs. The lock being again released, the prongs, together with the sheets carried by them are turned over to the position of Fig. 1.

Disengagement of the lower sheets when the parts are in the position of Fig. 1, is prevented by making the tangential ends of the prongs of sufficient length to enter recesses 35 formed in the inner face of the binder plate 10.

I claim as my invention:

' 1. In a loose leaf binder, in combination, a suitable base, upstanding hinge plates secured to the base, a revolvable rod having an out-of-round end, carried by the hinge plates, a plurality of approximately circular sheet-carrying prongs encircling the rod and each having one end inwardly turned and secured to the rod. .the other end thereof being free, and a spring plate upstanding from the base and having an out-of-round aperture in line and engageable with the end of the rod.

2. In a loose leaf binder, in combination, a suitable base, upstanding hinge plates secured to the K base, a revolvable'rod carried by the hinge plates, a plurality of approximately circular sheet-carry ing prongs encircling the rod and each having sheet having a pair of laterally protecting hinge plates mounted upon the rod, the outstanding length of such plates being approximately that of a radius of the prongs.

3. In a loose lea! binder, in combination, a suitable base, upstanding hinge plates secured to the base, a revolvable rod carried by the hinge plates. a plurality of approximately circular sheet-carrying prongs encircling the rod and each having one end inwardly turned and secured to the rod, the other ens! thereof being free, and a cover sheet

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