US2061675A - Loose leaf binding device - Google Patents

Description

Nov.. 24, 1936. F. s. SCHADE LOOSE LEAF BINDING DEVICE Filed March 21, 1935 2 Sheets-Sheet l INVENTOR /m BY ATTORNEYS Patented Nov. 24, 1936 PATENT OFFICE v,li'rank lStanley Schade,'Holyoke, Mass.,assignor 4to National Blank Book Company, Holyoke, ylMass., a corporation ofyMassachusetts `v 'l Q"lippliatfumy March 21, 1935, seriarNo. 12,184

4 Claims. '-'lhisinvention relates to improvements in loose leaf sheets and sheet binding mechanism. It

is intended for use with that type of sheet bindi ing mechanism which consists in a single helical- 5 ly coiled lwire. successive vturns of Awhich pass through smallfholes arranged in a row along the binding margins of the sheets. These suc-v cessive `holes inthe row are ordinarily spaced by the pitch distance of the coiled wire. 10 In the prior. artbinders of this coiled wire type. it is customary to thread the wire along the vholeszin the ller'fsheets and then provide a stop atthe ends ofrthewires. The prior art book thusmade is in effect. a` permanently bound L book` in `thelsenselthat the user does not ordinarily-remove, replace. Aor insert sheets asv-in a 'loose' leafbook. While itfispossible tof'remove the vstopsatthe` end` ofgthe binding wire and unscrewthe coiled wire from'binding relation 2i) tdthe sheets,' arrange thejsheets andagan 'screw in the binder, ittakesfaltogether'too'much timefworkand'care toifdothis.` Sothe custom isft'o bind the sheets -at` the factory and the v user' handles thebook as he lwould apermanen'tlylbound one.i'

I"According to `"onef feature o'i' my invention I makemy sheets for afbin'der of Athe type mentionedybut with' novelstructure soarranged that theuser may hav'e'aloose leaf book inl which individual sheets can'bej very conveniently rerovedfput in, or interchan'ged "in the filler pack "as" inlooseleaf books. Mymeans for this purptsehasy 'a/tlifferents'tructureand mode of opeifation" from'prior. -artflose' leaf books. so far 'as k'nw.-

. z A ""Aco'ordingto an ther feature of my invention e the '*coile'd wire :binding 1 means with 'rowibindingi strips instead 'of iiller 'fi'iifbutflwithout 51ans. sheetsy or; leaye (el. 12s- 1) on. thel binding margin for removably fastening it to the coiled wire; l y

Fig. 3 is an enlarged scale end view of the sheet with a part beyond the binding margin cut` away; l t e Fig. 4 is a plan view of one binding strip made for attachment of a ller sheet;

Fig. 5 is a perspective view ,of a book with a pack of binding strips mounted therein, a part of the book being cut away to save space; and 10 Fig. 6 vis a view to indicate the progress of a. sheet as it is -being put in or taken out of the book. l

Fig. 1 shows one customary type of coiled wire binder with the wire l and covers 2 and 15x Sehung thereonj but with no filler sheets. Fig. 2 shows an` example of one of the iiller sheets 4 made according to my invention., It consists o f any `type of paper portion 5, v ancithat type may be thin book; papersuch asfusedzfor writing 20 in looseileaf books. To make the f lller sheetin =a preferred way, ll meisten the binding margin of paper `5 with a -solvent for celluloid, lay :a

strip of celluloid '6 along the moistened margin and. press the two together with a heated roll 25 `or presserbar.'l The solvent. and heat cause tact made with the paper in other4 ways. The

robjectjis to get `arelatively strong springy binding r'eenforcement .on'the paper' sheet.- 'And `this can be done in various `other ways, for 'example. by va strip of vmetal foily applied with "3'5 thermo-plastic cement. I prefer tol have the reenforcing strip of as-thin, material aspraoensheet. But the flaps may be deliberately and individually bent out of that plane, when desired. I prefer to make the cuts 8 and 9 without substantial width rather than as slots, although the latter may be used in the broader aspects oi my plan.

To fasten the sheet 4 on the coiled binding wire I, the sheet margin is started by pushing the end convolution sidewise through the end cut 8. Then the margin is bent into place so that each successive cut B admits each wire convolution as the sheet is laid against the coiled wire. This operation is indicated in progress from bottom to top of Fig. 6. The parts can be assembled with convenience by overlaying the wire coil at the side with the binding margin of the sheet and by pressing the sheet down against the wire as by running the finger against the sheet along a line Just back of the row of holes. The pressure causes the aps to bend and tip enough for the end of the cuts 8 to find the sides of the wire convolutions and admit them through the cuts to holes 'l one after the other. As soon as the wire turns are located in holes' theiiaps will return to their normal ilat position by the strong flattening tendency of the celluloid iiap.

To unfastenthe filler sheet from the binder it is only necessary to pull the sheet from the upper right-hand corner just as if one were tearing the sheet out of the book. In the action each flap half is bent to snap over its wire so as to free the latter from the retaining hole. The wire. rides out through the cut 8 and continued tearing pull on the sheet unfastens one convolution after another. The action is about as fast as if one were tearing out a sheet oi an integral stub along a line of perforations. But in this case the wire I, instead oi' a stub, separates through cuts B exactly located for the purpose and there is no tearing The fastening of the sheet 4 on the wire I is simply the reverse bending movement from that of pulling it of! and the operator's nger can .be slid along back of the line of holes with a pressure action which is the reverse along that line of the pulling action as in the tear.

One important function of the cuts 9 is to conilne the pulling and pushing action adjacent each hole to the ilap of that hole. This substantially avoids the transmission of the pulling or pushing forces in the operations from one iiap to the adjacent ap. The consequence is that each nap action is independent with respect to they bending necessary for the wire binder convolution to snapinto-or out of the one hole of its adjacent flap. In the absence of cuts 9 the flap bending line would be the line/connecting two adjacent holes. The flap could not be bent without affecting the conditions at both holes. I prefer not only to use the cuts 9 to avoid'the bending action on the line between two holes but also to have cuts 9 long enough to locate the flap bending line back of the line between the two holes as I have indicated. This provides in the best manner I know for making the' flap action individual with respect to the hole. Even though binding wire I is made of small gauge wire, it has some thickness, so that as one coil crowds through one cut there is a necessary bending in the flap area to admit the wire to the hole. After it gets in the hole the fit is loose and when the next wire is crowded through its cut it may not be lined up to do sov as well as the previous coil did. But with the flaps cut as at 9 the flap halves adjacent the holes I work around the thickness of the wire without any objectionable strain that might make successive actions between wire and binding margin harder tovaccomplish. The fact is that the desired action with my preferred form is accomplished in a remarkably easy fashion.

I have described the binder and the action with one illler sheet 4. I make up my improved loose leaf book with a pack of filler sheets fastened and unfastenedin the same way. This gives me a whole book with all the advantages of the ordinary coiled wire binder over the customary ring type binder such as are generally recognized by users.' Heretofore, the ring binder book has had the advantage in the easy removability and insertion of individual sheets which the coiled binder lacked. My improved coiled wire binder now has the same loose leaf bookadvantage and with a remarkably effective structure for attaining the advantage of both types of books.

So far as I know, manufacturers have not heretofore sold for general use the coiled wire' binder without the filler sheets. The customary type of binder did not permit this practice, but with my improvements this. can now be done. The casual user can buy his binder and select his desired type of illlcr sheets for insertion all with the same convenience as in ring binder casual customers practice. Y

The ordinary user of loose leaf books 'frequently wantsto bind up special sheets of his own which are not practical to supply through a stationery store. An example is the desire to bind up patent copies in loose leaf form. I have extended my present invention to a. structure to fill this need. The modification is shown in Fig. 4. In addition to making filler sheets at the factory tobind in my improved way, I plan to make filler strips or stubs I I as shown. 'Ihe celluloid 6 i's fastened as a reenforcement to a slightly wider paper strip I2 in the way already described. The paper extends sidewise of the celluloid enough to provide a pasting strip. This pasting strip extension is preferably provided on its face with a layer of adhesive gum indicatedA at I3. A patent copy ycan be separated by pulling out the binding staples. Each sheet can be pasted on the special stub II along the binding margin and then the stub put in my binder. A book can be made up in this way by anyone, containing a desired set of patent copies with the binding structure of Fig. 5, and itis a most convenient way to do it, superior to any available and customary loose leaf form forl the purpose. of which I am aware. The value in the use is that there is a better binding structure with the coiled wire type, since the sheets of va bookmaybe turned over so easily that the book canibe opened back to back. With my sheet removability feature, the drawing of a patent copy can be laid alongside of its description by the individual handling of the sheets, no matter how they were originally bound in the book. Patent copies are notoriously inconvenient to handle and bindin loose leaf form in part because-to examine the drawing while reading the description extending over opposite sides of a single page requires so much turning. Furthermore, the paper is not of a grade that works well with punched holes or ring binders when the copy sheets are loosened and separated from their original staple binding means. My modification is particularly adapted for good utility under such adverse conditions in the paper sheets to be bound.

Having disclosed my invention, I claim:

l. A loose leaf structure fonned of sheet mamargin ing or. distortion from ,contact with the wire in terial including a stiff, sprlngy binding provided with a row of holes for the reception of the turns of a helically wound binding wire,

` hole entering cuts extending from each hole to and through the binding edge of said binding margin, andcuts positioned intermediate said holes and extending inwardly from said binding edge a distance sufficient to enable the material between the intermediate cuts and the hole entering cuts to be temporarily flexed from the plane of the sheet, to permit the turns of the.

binding wire to enter and leave the holes by way of the hole entering cuts, without impairment to the resistance of the material adjacent the holes to tearing or distortion from contact with the wire inthe normal use of the structure.

2.-A loose leaf structure formed of sheet material including a stiff, springy binding margin provided with a row of holes for the reception of the turns of a helically wound binding wire, hole entering cuts extending from each hole to and through the binding edge of said binding margin,

. and cuts positioned intermediate said holes and extending inwardly from said binding edge to a bending line beyond the holes forming individual tabs foreach hole thereby enabling each tab to be temporarily swung voutoi the plane of the sheet and enabling thematerial between the intermediate cuts and the hole entering cuts to be temporarily twisted out of the plane of theA tabs, to permit the turns of the binding wire to enter and leave the holes by way of the hole t entering cuts, without impairment to the resistance of the material adjacent the'holes to tearthe normal use of the structure.

3. A book with exchangeable leaves comprising in combination loose sheets, each sheet having perforations near its binding edge, slits ex- 5 tending from each perforation to said edge and. affording entrance to the perforations from said edge, tab forming slits between adjacent perforations, and a helically wound wire the distance between the turns of which corresponds to the 10 distance between said perforations, said wire having one turn extending through each of said perforations, said wire being adapted to have the respective turns thereof inserted and removed from the perforations by Way of said rst named l5 slits upon flexing of the tabs from the plane of they sheet and the flexing of the portions of the tabs adjacent the rst named slits out of the plane of the tabs. go

4. I'he combination of a vstrip of exible springy thin material and a strip of paper adhesively fastened thereto and extending beyond one side edge thereof, adhesive gum on the extended surface of said paper, a row of spaced holes along the opposite edge of the springy ma- 25 terial for the reception of the turns of a helically Wound binding wire, cuts intermediate the holes to arrange each hole in an independent tab and cuts affording sidewise, entrance to said holes through which the turns of said wire may len- 30 ter and leave the holes by exing-of the tabs from the plane of the strip and the flexing of the portion of the tabs adjacent the entrance cuts from the plane of the'tabs.

- FRANK STANLEY SCHADE. 35

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