US1780835A - Loose-leaf binder - Google Patents

Description

Nov. 4, 1930. J. N. MORTENSEN 1,780,835

LOOSE LEAF BINDER Filed Oct. 11, 1928 2 Sheets-Sheet 1 INVENTOR JENS N. MORTENSEN 1930- J. N. MORTENSEN 1,780,835

LOOSE LEAF BIfiDER Filed Oct. 11, 1928 2 Sheets-Sheet 2 INVENTOR JENS N.MORTENSEN Patented Nov. 4, 1930 D S AT JENS N. MORTENSEN,

LOOSE-LEAF Brnn aa Application filed October 11, 1928. Serial No. 311,3?14.

My invention relates to loose leaf extensible post binders of a type in which the locking means are independent of the posts on which the sheets are threaded. V j

The object of my invention is to provide such a loose leaf binder having a reduced number of parts, and which is economical to manufacture and easy to operate.

In the drawings 1 1 Figure 1 is a perspective view of the back of a binder made according to my invention, the two parts of the binder being separated;

Figure 2 is an end elevation of the back of the same binder;

Figure 3 is a view similar to Figure 2, but in vertical section through the back taken on the line 33 of Figure 4;

Figure 4 is an elevation of the back of the '20 binder from the inside taken on the line 44 of Figure 2; portions of the binder and of the loose leaves or sheets contained therein being cut and broken away; while Fig. 5 is a horizontal section through the back of the binder taken on the line 5-5 of Figure 4.

The device comprises top and bottom binding bars 10 and 11, bearing means for retaining the perforated leaves or sheets 14. The

retaining means may be of any suitable kind. In the drawings they are of the alternating post type, that is to say, they comprise posts 12 carried by one binding bar alternated with posts 13 carried by the other binding bar.

The binder may be provided. with covers 30,

31 of any desired type, which may be secured to the binding bars by any suitable means, as

by rivets 32. 7

An adjustable back of the binder is formed from two flanges 15, 16 mounted on'and forming back portions for the binding bars 10 and 11 respectively. These flanges cover the back edges of the sheets and telescope with each other. To keep the flanges in register with eachother the ends 17 of the flange 16 of the lower bar 11 are bent around the ends 18 of the upper flange 15 as shown in Figure 1. The ends 18 of the upper flange are crimped over upon themselves to "provide better parts. v

The novel means for locking thetwo'binding bars together'includes vertical s'lots'19 in the upper flange having notches 20 therein and :catches on the lower flan'ge moving'in the; slots. The slots 191-2L16. open \at theiiree edge of the flange to permitseparation of the top and bottom bars. Thereare'tw0 slots=19 in the upper; flange and -';the notches :20 are. inithe edgesolfthe slotsadjacent the nearest end,v of the flange. The two fcoo'per'ating' catches, onthe lower flangeinclude as'tud 21c TENT- F A or BROOKLYN, NEW YORK, assreivon To. BOQRUM earners}: cp' IPANY, or NEW YORK, N. Y., A oonronnrronor onnwvonx guiding surfacesbetween'the two i adapted to engage'andybe. ret'ainedZbyEthe" v notches 20, each stud being mounted on the innerend of a pin 23 carried on the outer face ofthe lower flange 1165;;Each studproa jects through a slot 22 in1the flange, 16: into line with thenotchesQO. I a v When the two parts of the binder are'mutually engaged, as shown in F igure,4,spir'al springs '24 wound on the pins 2-3 andsecured under "the heads 25 on the outer ends of the: pins each exert pressure which holds, thev stud'in engagement with anotch 20,vthus securing the two parts of the binder together;

j To release-the clamp, the operator pressessimultaneously upon the heads 25; of"the,:-two..

spring pins.- Thispushesthe;studs21 to: W

Ward the center of the binder and out of engagement with the notches -20, whereupon the two parts of the binder maybe moved rel-. atively to each-other; They may be entirely separated, as shown in Figure 1,7or the flange 15 may merely be raised orlowered slightly in the grooves 17 of the flange ltiguntileach stud =21 is opposite a higher Tora-lower notch 20.. Then on releasingthe pressure upon the heads of the pins, the springs24 'fo'rce the studs 21 apart backinto engagementgwith notchesQQ, thus-fastening thejtwo parts-oi. V i

the binder together again, y

- Other arrangements of the notches and; consequently" of the. stud-operating--=means, within the scope of the invention, will occur to those skilledingtheart, j The spring "pin 23 niay be attached to'theflange 16 in anysuitable manner, as; by the stop 26, riveted to theflange. w

The sprmg pins 23 j-may oe -covered the V 3. In'a loose leafpost binder a pair of housing 27, which Q may con'venie antly be formed of a channel iron, as shown in Figure '3. In the form illustrated in the drawings,

this channel iron is providedwith atop Jtlange 28 whichais 'flushwiththeto'p of the fiangelG of thebottom bar, and need be nolon er thaniis necessar *toi honsel the hin e a y a; p n; The lower flange 29 of the housing, 1s

q madelong enough to underlie the bottom bar I '1 In a 'looseleaf post bindenia flanged" binding bar, the flange being slotted adjacent ll fand maybeattaehed'thereto'by the same I means 32 which attachthe" cover'31 to the pressed locking stud on the back portion of the'other binding bar, cooperating with the notched edge of the first binding ba'r,fthe endsof the back portion of one bar being bent to receive and guidethe ends of the backpor- 70 tion of-the otheriq In testimo'nyilwhereof'il have signe my I 7' name to this specification. c t

' .J NS

bottom bar. If desired the'web of thechanf nel iron-27 may be made'slightly longer than its flanges and may be bentat 33- toclose the V I housing, as shown in Figure 2.1

The springpins, :of course protrude through slots'in 33, and extend far enou h I f beyond the housing to allow: themto he pressedinwardly by thefingersof the opera bar;

parts heretofore used to give the expanding elementpfi :Iclaimz.

each end, and'the edge-ofeach slot'nearest the v I end of the flange being notched, in combina tion Wit'h'asecond flanged binding bar, mov

able studs carried byt'he-fiange of the second 1 bar cooperating withthe notches in the flange- 'ofthe first bar; and'stud-operating means onsaid secondflange comprising a pin carrying each stud and a spiral spring surrounding r each pin to pressqthe; stud away from thei centerofthe binder to'lock the binder, said pins being adapted to 'bepressed inwardly from the ends ()f therbi d riby h Operator to unlockthebinder; c I

I '2. Ina loose leaf post binder a pairoibinding bars," eachhaving a back 'p0'rtion,'

the back portion of on'eb'inding bar being slotted and the'slot being open at one end and having a notched edge, inicombination with p a spring-pressed lockin'g'stud on theback portion of the other binding bar; cooperating with the. notched'edge of theflfirst binding bar. 2 i I binding bars, each having aback portion, the

' back portion of one bindingbar being slottedand the slot being open at one end and having I a notched edge, in combination-with a'sprmg-

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