US1660923A - Ledger book - Google Patents

Description

C. L. HARVEY LEDGER BOOK Feb. 28, 1928. 1,660,923

Filed Jan. 5, 1925 Invader Patented Feb. 28, 192s.

UNITED STATES.

conBoN L. HARVEY. or r DETROIT, MICHIGAN.

Lanenaoox.

lApplication lred JanuaryA 3, 1925. v Serial No; 435. i

, invention relates to loose leaf. binders ofthe type shown and described in United States Letters Patent No. 1,504,040, issued to C. L. Harvey August, 1924, and ,consists in improvements in the back frame.

One object of my invention is to provide an improved backl frame construction in which the binding post engaging strips are held in engaged position. i j

Another object is to provide this locking means in such a manner that it will automatically hold the parts upon engagement of the binding Vosts by the strips. j

A further` o ject is `to`- provide for the parts a `locking means that may be disengaged without the use `ota special tool or instrument and without any extra eiort on the part of the operator. In the accompanying ing my inventionl Figure 1 is an elevationwith a side of the upper frame bar removed to show the mechanism therein. j j

Figure 2`is a top view of the upper frame bar with the top wall removed.

drawings illustrat- Figure 3 'is in part an elevation and in part a section taken on line 3-3 'of Figure 2. y

Figure 4 is a cross section taken on line. 4-4ofFigure3. j j

The numeral 1 in the drawings indicates the base'or back member of my improved loose leafnledger book.` 2 are expansible binding posts which are preferably threaded into base 1. Binding posts 2 are provided with annular grooves 3 near their upper extremities. The upper frame bar 4 to which the top cover (not shown) is hingedly connected is preferably formed of .two channelshaped stampings `of sheet metal 5 and `6 which enclose slotte-d lugs7 and 8 at their ends and are secured together by rivets 9 or by spot-welding to each other and to the lugs. This construction forms a hollow bar of rectangular cross section which possesses a high Adegree of rigidity for the weight and cost of material and provides space for the post engaging mechanism. j

Two strips 10 and 11, preferably stampings, are slidably mounted in bar 4. The inner end of each of said strips is partially cut away and the remaining corner is pivotally connected to a disk 12. Disk :12 is rotatably mounted on rivet orpin 9. The point of connection between strip 10 and disk 12 is diametrically opposite the connection between strip 11 and disk 12 and the strips 10and 11 extend in opposite directions fromthe disk.

,The postsV 2` extend into bar 4 through openmgs` in) the underside thereof and through the slotted portionsof lugs 7 and 8.

Strips 10 and 11 are slotted at 13and 14 in their outward ends. The slotted portionsare ada ted to fit into annular grooves 3 on,V the bin ing postsand thus connect the bar4 with the remainder .of the ledger book.

j A fiat spring member 15 has one ofrits ends riveted to strip 10. This s ring is so tens-ioned that its tendency is to end away romthe strip to which it isfastened except at its free extremity 15'- where it is bent slightly ina reverse direction or back toward the strip. .j

The channel-shaped stamping 5 jis provided with a` depressedportion 16` overthe free end of spring 15. Disposed longitudinally of said depressed portion'a'ndof said channel-shaped stamping vis a `slot 17 A tip or projection 18 isV formed preferably on one side of slot 17A by making twofshort arallel cuts in the edge of said slot and j ending the portion between the cuts downproject to the interior of the hollow ar 4. i Opening `19 in s ring 15 is so located that when strips 10 an All'are extended as hereinafterexplained, the projection 18 will enter this'opening and latch the variousparts in position.

A button 20 is riveted to spring member 15. The neck of said button extends through slot 17 so that its head 21, which is'of slightly greater diameter than the width of the slot, is disposedexteriorly of bar 4 indepressed portion 16. L

To use my` improved ledger book, the opcrater adjusts the expansible binding posts 2 to suit the heightof the number of leaves in use. The button 20 is pushed to the inner limit of its movement and bar 4 with the front cover `hingedly attached thereto is vplaced over the ends of the binding post. `Button 20 is then pushed to the outward wardly or in suchdireetion that the ti willv projection 18 and the spring is depressedA suliiciently to permit. its passing under the projection. The coincidence of opening 19 in the spring member with projection 18 permits spring 15 to return to its normal position, that is, bearing against the underside of depressed portion 16. This return causes an engagement vbetween a fixed member, the projection, and a movable member, the spring, and firmly holds the post engaging mechanism in engaged position. The natural and only practical way of movingthe button 20 is for the operator to push it with his linger since the head of the button lies in its groove below the normal surface of 'channel member 5. An almost imperceptible amount of downward aressure is required to depress spring 15 suflieiently to disengage projection 18 Jfrom opening 19 to allow the button 2O to be moved to disengage the strips from their respective binding posts. The necessary downward pressure is unconsciously7 provided by the operator in exerting suilicient effort to move the button in its slot. Y

In my improved ledger book as described there is no necessity of using a key or any tool to operate the device.k No excess friction is required on any of the moving parts since they arel positively held in engaged position. Another advantage is that the bar 4! of my device forms a substantially dust proof case for the operating mechanism. This is provided by the fact that spring 15 closes slot 17 when the strips engage the binding post and the binding posts lill the vonly other openings.

v ly rebent, an operating button on said spring Leccese against further movement upon engagement of said binding` post by said strip.

2. In a loose leaf binder, a frame includ- .ing a binding post and a hollow bar having a slot in one of the walls thereof, a post engaging strip slidably mounted in said bar, a spring member one end of which `is fastened to said strip, an operating` button on said spring member, said button extending exteriorly of said bar through said slot, a projection on said bar, and means on said spring member. for engaging said projection to lock the parts against further movement upon engagement of said binding post by said strip.

3. In a loose leaf binder, a frame includ? ing binding posts and a hollow bar, a'pivotally mounted disc in said hollow bar, post engaging strips connected to opposite sides of said disc and adapted to move in opposite directions into post engaged and disengaged positions, a spring member having one end fastened to one of said strips, jan actuating button on said spring member projecting exteriorly of said hollow bar, and means on said spring member and said hollow baradapted for engagement to retain said mechanism in post engaged position.

4. In a loose leaf binder, a frame including binding posts, a hollowbar having al slot therein and an inwardly extending projection adjacent to said slot.l a disc pivotally V engaged positions, said strips being piv` otally mounted on opposite sides of said disk to move in opposite directions, and an actuating lmember connected to one of said strips and extending through said slot, said member being yieldable transversely to the longitudinal axes of said strips and rigid relative to its longitudinal position therewith, and means on said member adaptedl to engage said projection when said strips areV in post engaged position. v

ln testimony whereof I hereunto affix my signature this 16th day of December. 1924.

CORBON L. HARVEY.

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