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Publication numberUS974831 A
Publication typeGrant
Publication dateNov 8, 1910
Filing dateJul 8, 1909
Priority dateJul 8, 1909
Publication numberUS 974831 A, US 974831A, US-A-974831, US974831 A, US974831A
InventorsLawrence F Scherzinger
Original AssigneeTengwall Company
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Loose-leaf binder.
US 974831 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

L. F. sGHERZNGBR.

LOOSE LEAF BINDER.

'APPLICATION FILED JULY 8, 1909.

9749831 o Patented Nov. 8, 1910.

MM .914 20 52121 -gl z i@ i @www ..20 in which' the hinge leaf remain in open or ing'is aspecificatioii.

` T his invention'` relates to improvements I To all whom 'it may concern:

Beit known that I, LAWRENCE F. 'SoHER-' ZINGER, a citizen ofthe United States, resid' ing at 119 Cullom avnue,-0hicago, county of Cook, and State of Illinois,j'have invented' [hinge plates 11 byfmeans of knuckles 12 vcertain V. nevv and "useful Improvements in 'Loose-Leaf Bintiers,V of whichfthe `i'ollowknuckles upon the supporting plate. The

`LAWRENGE F. SHERZINGER, OF CHICAGO, ILLINOIS,IASSIGNOR TO THE TENGWALL- ooMPANm'oEoHICAGo, rLLrNqis, A CORPORATION or MAINE.

in loose leaf binders'and refers more part'icularlyjto-fimproved locking mechanism 'v anism oivvhich 'may be used ondiflerent for bindersor files of the'prong type.x Among the salient'objects .of the inven` A tion are to provide a construction in which@ the. hinge leafs carrying the prong r'iiembeis are-forced open by simple cam mechanism; and are positivelyflcked in either open or`^v closed position; to .provide a construction lin 'which the-"operating mechanism is substantially concealedvvit inthe binder, and

=closed position Without manual control, hereby permitting lthe use of both 'hands for inserting the-leaves upon the binder.; to provide a construction the locking mechstyles 'of binders; Vt'o-provide 4an extremely simple and reliable construction Whichcan be manufactured at a verylow cost; and in -general to provide 'an improvedconstruction of the character'referred to.

The invention consists inthe mattersliere-A after` described and more particularly `,pointed.'fout in the appended claims.

'In the drawings-fFigure'lis a perspecf tivevie'W of a temporary binder ofthe prong 1 i' v type equipped with. my invent-ion, the covers eing open a'ndthe sheet-holding prongs closed.. Fig. 42 is the top plan .vievv of the binder proper,V` the cover plate beingjhow-. lever, removed, in order to bring out certain details of construction. Fig. 3 is a 'longitudinal vertical sectional View of the binder. Fig. 4 is a transverse sectional vievv .showing the prongs closed and Fig; 5 is a view showing the prongs open.

: the covers 'of thebinder having -anintegral' Referring to the drawings, 1,'.1Ldesignates back. Lyin-ginside ofthe back isa connecting strip 4, the ends of `which are suitably securedto" the covers asshoii'vn at. 5.

. f lThis strip 4 is fastenedv between the curved su ortin l,plate 6 and a clamping plate-7' pp g The longitudinal by' means of rivets 8.

Specification of Letterslatent.

' Application filed July 8, 190.9. Serial No. 500,466.

fastened in' the usual-manner. plates 11'A are-*normally forced into-aline- `ment, thus closing the prongs, by means of the meeting edges of the hinge `plates 11.

Loose-LEAF BINDER.

Patented Nov. 8,1910.

edges of the curved plate-6 are provided withv spaced apart hinge strips or4 knuckles 9, 9 clamped around the ypintles 10, 10. To

these' pintles` are .pivotally connected the which register With the alternately disposed hingepla'tes orfstrips are provided With the usual prongsl'g lto which the leaves are coiled springs 14 mounted upon the `pintles and provided With-fingers 15 'Which engage the. upper. face of the` corresponding hinge plates.

Describing now the locking mechanism for holding the prongs in either open or closed position, Within, the upper face of the curved supporting plate 6` is mounted a sliding'bar or arm 16,' the ends of which are provided with closedslots 17 riding in suitable conining studs or. guide screws 18. The outer end of the arm is provided with an upstanding handle 19 `whereby the-arm may be reoiprocatedacross'the face of the curved support-ingplate .As an important feature of construction the arm 16 is provided with ivedgelshaped cams 20 normally projecting through suitable apertures 21 formed'by cutting awfiiy n order'to positively lock or clamp the hinge plates in cl-osed position the cams are each provided With a locking lip or tongue 22 vvhi'ch project over the meeting edges of the hinge' plates'vvhen the latter are in closed position as 'shown at 23. The hinge plates are limited in their upward .movement by means of a downwardly curved closure plate Q41, the edges of. which are crimped over the hinge knuckles as shown at 25. This upper member 24 is slotted as shown at 26 at points .opposite`the prongs 13 in order that the lat- The` hinge lThe operation of the device is apparent I `from the above description. When 1t is desired to open the prongs to insert the leaves,

the arm 16 is drawn back until the cams pass out of theslots' 21 `whereupon the hinge plates will be obviously lifted and the prongs v swung apart. Tl1ey.will remain in this position `until the'arm 1G is again forced back to its original position whereupon the cam will reenter the slots and the hinge plates return to normal through the action of the springs. At the same time thelocking lips will ride `up over the meeting edges of the plates and positively lock the latter in closed position. j

yThe invention is not limited to the details v of construct-ion shown except as set forth in the appended claims. I claim as my lnventionz' y m 1. Ina binder, the combination with a,

supporting plate, of pronged' carryingmembers hinged thereto'an'd provided with a plurality of opposed prongs, 'an actuating arm slidably mounted in said supporting-} )late, and cam blocks carried by saidarm and projectingthrough slots-formed in `the meeting edges 'of said prong carrying members when the latter are in closed position.

2. Inv a binder, the combination with a supporting frame member, of prong plates hinged thereto and provided with a plu- `rality of -opposed prongs, an actuating arm slidably mounted in said frame member, and

cam blocks carried by said arm and moving te: v 974,831I

supporting frame member, of leaf carrying .plates hinged thereto, an actuating arm slidablymount-edbeneath said plates anda cam block carried by said arm and projecting through an aperture formed in the meeting edges of saidplates when the latter are in closed position.

5. In a binder, the combination with a Asupporting plate, of prong carrying mem bers hinged thereto and'orovicled'with o3- e l, A p osed prongs,l an actuating armslidably mounted beneath said plates, a caln block carried thereby, a conningplate, and a flexible cover attaching member secured be-V tween said confining and supporting plates.

LMVRENCE` 1r. SCHERZINGER. Vilitnesses':U I* Y HOYT N. MCCLAIN, JOHNJ. Diem..

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3077888 *Jul 21, 1958Feb 19, 1963Gen Binding CorpSlide lock for a binding element
US3253603 *Sep 16, 1963May 31, 1966Gen Binding CorpBinding element
US4486112 *Mar 4, 1982Dec 4, 1984R. D. Cummins, IncorporatedLoose leaf binder
US4566817 *Jan 16, 1984Jan 28, 1986Barrett Jr Arthur MRing binder
US4571108 *Nov 26, 1982Feb 18, 1986Kurt VoglLocking ring binder mechanism with control slide
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US6702501Apr 15, 2002Mar 9, 2004James S. ChizmarLoose-leaf binder
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Classifications
Cooperative ClassificationB42F13/26