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Publication numberUS880053 A
Publication typeGrant
Publication dateFeb 25, 1908
Filing dateJun 15, 1907
Priority dateJun 15, 1907
Publication numberUS 880053 A, US 880053A, US-A-880053, US880053 A, US880053A
InventorsClarence D Trussell
Original AssigneeTrussell Mfg Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Temporary binder.
US 880053 A
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Description  (OCR text may contain errors)

'PATENTED FEB. 25, 1908.


. ATTORNEY 4g ANVENTOH 25 of sheet-holding prongs.

- view of the spring plate.

40 side of spring plate '1.

50 opposite prong.




Specification of Letters Patent.

Patented Feb. 25, 1908.

Application filed June 15. 1907- Serial No. 379.106.

T all whom it may concern:

Be it known-that I, CLARENCE D. TRUS- SELL, a citizen of the United States, residing at the borough of Brooklyn, New York city,

-in the county of Kings and State of New York, have invented certain new and useful Improvements in Temporary Binders, of which the following is a specification.

My invention relates to temporary binders of the type shown in my application Serial sertion or withdrawal of sheets.

Figure 1 of the drawings is a perspective view of the temporary binder in open position. Fig. 2 is a side view of a pair of the sheet-holding prongs in closed position, the parts below being shown in section.

Fig. 3 is a similar view showing the prongs open for the withdrawal of sheets. Fig. 41s a similar view showing the sheet-holding prongs and covers closed. Fig. 5 is a side view of a pair Fig. 6 is a plan Fig. 7 is a rear view of the same showing the binding plate.

j Referring to the drawings, 1 is a spring plate adapted to be secured to the back 2 and covers by means of the binding plate 3 whose end projections 4 are bent upward and inward through the notches 5 in the ends of spring plate 1 to clamp together said spring plate 1 and the binding plate 3 so as to hold S5'securely between said plates the binding strip 6 which extends on either side of the metal spring plate 1 between the outer layer 7 of the covers and a stiffening board 8 whose inner end is adjacent to and parallel with the Each cover has a finishing layer 9 overlying the stiffening board 8. The spring plate 1 is com osed of a curved base portion 10, from w ch are bent inwardly two parallel wings 11 which are provided with oppositely arranged notches 12. The sheet-holding prongs 13 are made in two pieces, one piece having at its lower end a tongue 14 adapted to engage a groove or notch15 in the 'lowerend of the The lower face of groove 15 is prolonged into the tongue 16, which is adapted to contact with the lower face of the opposite prong to sto the opening movement of the prongs, as Eest illustrated in Fig.

3. Each prong has a notch 17 on its lower edge adapted to be engaged by the inner edge 18 and one of the notches 12 in spring plate 1. The upper sides of notches 17 are cut away at an angle so that they will not contact with thewings 1-1 when the prongs arein the open position, as best illustrated by Fig. 3.

Adjacent to each cover is a flyleaf 19 composed of a metallic plate 20, around which is pasted a sheet 21 of glazed paper or similar material so as to completely envelop the.

same and extend outward beyond said plate, as best illustrated in Fig. 1. Each flyleaf 19 is apertured along its inner edge for the reception of the prongs 13. At each of the apertures 22 the metal plates 20 are bossed or bent inwardly as indicated in Fig. 1, and best shown in Figs. 2, 3 and 4. The sheets adapted to be held in the binder are indicated at 23. Such sheets are, of course, apertured for the reception of the prongs 13, as indicated in Figs. 3 and 4. Y

The operating parts consist of the spring plate 1 and the several pairs of sheet-holding prongs 13. The flyleaves 19 operate to open the prongs as hereinafter explained.

The several layers of the covers should be pasted firmly together for the sake of neatness and to fasten securely the binding strip 6 by means of which the parts are held together.

The s ring plate 1 is made of resilient metal. FVhen the sheet-holding prongs are in the closed position illustrated in Fig. 2, the joint formed by the tongue 14 and groove 15 is slightly below the level ofthe edges 18 which engage the notches 17 so that the spring pressure of the spring plate 1 holds the sheet-holding prongs 13 in closed position.

The prongs 13 may be opened by pulling each pair apart separately by the fingers. As the prongs open they rock slightly on edges 18 as a center so that their lower ends are raised, carrying the joint between the tongue 14 and groove 15 above the level of edges 18 so that the pressure of the spring plate 1 then serves to force the prongs apart and into the position shown in Fig. 3. The opening movement of the prongs is terminated by the impact of tongue 16 against the lower edge of the opposite prong. To close the prongs they are moved together by the fingers. This movement lowers the joint of the prongs below the level of edges 18 so that spring plate 1, at the moment the joint passes the central position, serves to snap the prongs 13 together and retain them in the position shown in Figs. 1, 2- and 4. The

sides of notches 12 serve to hold the prongs alinement.

1-3 from movement sidewise and in exact A more. convenient method of opening the prongs to insert'or release a number of sheets is illustrated in Fig. 3 The sheets are parted at the selected points and turned back with ,\the -fiy-leav es and covers.- A slight prongs, the metal mu'nicated to all of the prongs by pressure on the sheets'at about the outer edge of each metallic plate 20 will cause the several pairs of prongs. 13 to open simulta-' neously. In using-lthis method of opening the '0 plates -20 act as levers. The metallic plates 20 should be stiff enough so that the opening movement will be comessure at only .one point. The inward ossing or bending of the plates 20 raises the edges of the apertures 22 so that they will not catch in notcheskl'i in prongs-13. The bossing or bending at the apertures 22 also permits thefiyleaves to nest around the prongs 13 when the binder is closed, as best illustrated in and desire to secure.

. inner edges ofveach a erture.

2. In a temporary inder, a pair of metallic plates apertured for the mating prongs and bossed or bent inwardly between each aperture and the inner edge of the plate to. form a groove in which a prong will lie when the binder is'closed. In a temporary series of mating prongs, and a pair of flat,

me'tallic plates apertured for the mating prongs and bossed or bent inwardly at the outer ed e of each aperture so that the 'plates-wilI not catch in the joints between the spring, plate andthe mating prongs.

' 4. n a temporary binder, mating prongs; means to retain said prongs in open or-closed gaged by said prongs and adapted to open binder, a spring plate, a

position; and apertured metalhc plates enthe prongs whenpressedbackward by the operator.

5. In a temporary binder, mating-prongs; covers; and a fly-leaf next to each cover engagin themating prongs and composed'of a metal ic plate atits base covered by paper and having a paper wing or extension 'outwardly. I

6. In a temporary binder, mating prongs jointed together, means to retain said prongs in open or closed position, a tongue 16 projecting sidewisefrom .one prong below-the joint between said prongs and adapted to contact with the flat lower surface in the opposite prong to stop the opening movement of the prongs.

Signed at New day of June A. D., 1907-.



York city in the county of New York and State of New Yorkthis13th CLARENCE-D. TRU ss Lri. I

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5503486 *Mar 7, 1994Apr 2, 1996Zane; BarryNotebook and notebook cover assembly
US5692847 *Mar 19, 1996Dec 2, 1997Zane; BarryLoose leaf binder assembly and spine therefor
Cooperative ClassificationB42F13/26