US1866425A - Calendar - Google Patents

Description

Patented July 5, 1932 HUGH n. sHLnn, or' MINNEAroLrs, mrnnnsorn j CALENDAR Application ala February 16, 1.931. serial No. 516,133.

This invention relates to an improvement in calendars, and particularly to acalendar of the type in Which the date indicating data is grouped in book form, Wherein there is combined With the date indicating data memorandum receiving spaces, With the book calendar complete initself and readily separable from the calendar mounting for preservation of the memorandain book form after the calendar data are no longer useful.

The use of a book form element combining all necessary characteristics of the calendar and at the same time providing space for desired memorandum presents a unique and highly advantageous calendar element for the calendar and memorandum spaces, Which may be separately assembled in book form and attached to any desired type of mounting, and While in use as a calendar serve for convenient reception of memoranda and other data, which memorandum or data may be preserved indefinitely by simply removing the'calendar element still in book form from the mounting or backing of the calendar.

Where, as in theV present invention, the calendar is presented in book form vWith the leaves to be turned successively in order to present the necessary calendar data to the eye of the observer, and Where such calendar book is to be secured to the backing or mounting so that it may be Vremoved and preserved intact for memorandum purposes, a serious problem is presented inbinding the leaves or sheets of the calendar book to present the necessary and desirable details of the book form and at the same time present the highly important and absolutely essential characteristic of a fiat opening of the leaves of the book in order that the calendar ldata surface may present a substantially unbroken flat area to the eye of the observer for convenient and ready reading of the calendar. data.

In this connection, it is quite apparent that the conventional book binding methods are entirelyuseless for under such methods, in the opening of the book, the leaves are curved from the binding line and the junction or margin of the leaves at the binding edge, or in other Words the longitudinal median line of the area presented when the'book is exposes a particular sheet on Which the calopen, is practically, if not actually, hidden. lf a characteristically similar binding were used for the leaves making up the book calendar, it is quite apparent that if a particular calendar period, say for example a month or a Week, Were printed on tivo adjacent leaves so as to be exposed When the book was opened at a particular point, there would bey a considerable area of adjoining leaves which could not be utilized for calendar data or, if 5U utilized, Would-,effectively rconceal or render diflicult of ready readingthat portion of the data printed on the leaves adjacent their binding edges.

Therefore, the very essential characteristic of a book calendar is that When opened at any point 'the-adjacent leaves presenting the 'then exposed surface must lie in substantially the same plane. As this characteristic must be presentV inthe exposed D area at any opening of the leaves, it is apparent that ay particular type binding or leaf connection is necessary to provide for this result and that the conventional methods of book binding Will not permit the desired result and are not, therefore, available for the purpose of forming a book calendar.

There is another important requisite in connection with book calendars which sub- `g0 stantially precludes the use of conventional methods of book binding in associating the leaves of the calendar, that is, any exposed area of the book incident to opening the leaves for presentation of calendar 'data must present that data on an unbroken surface in order to avoid the ditliculty of reading the calendar Where, for example, such data `app-ears on the surface of tivo independent or separated leaves.. lThis requires that the leaves of the calendar on which the calendar data is printed must be in unbroken form so that such leaves must necessarily be made up of an unbroken sheet folded on its transverse median line to present t-Wo leaves of the book and the calendar data printed on the sheet as an entirety, so that vvhen the calendar book with its characteristic binding, 1which permits' a flat opening,

endar data is printed, this sheet is presented to the eye in a flat, uniform plane, with the calendar data unbroken or undivided.

This presents the ideal calendar having the characteristics of the best possible presentation of the calendar data for readability, the arrangement of the calendar data, together withmemorandum sheets, in book form for future preservation, and the securing of this book form to a calendar back or mounting in a way to permit substitution of the book calendar' as may be required, while preserving the substituted book as a memorandum book in book form.

In making up the calendar book, a plurality'of folded sheets presenting two connected leaves are bound in superimposed relation, with the binding means such as to enable the leaves, when the book is opened at any point, to present the entire surface of the leaf in substantially a flat plane, the use of sheets folded to form two leaves providing for the printing of the calendar data on an unbrokeny sheet involving two leaves to avoid interruption of this data when the hook is opened for the presentation of the calendar data.

The invention is illustrated in the accompanying drawings, wherein :k

Figure l is a view in elevation of the improved calendar.

Figure 2 is an edge view of the same.

Figure 3 is a perspective view of a portion of the calendar book showing more particularly the preferred form of uniting successive sheets of the book to permit the leaves when opened to be presented in a substantially flat plane.

Figure 4 is a transverse sectional view showing the connection of three sheets folded to present six leaves, the type of connection being similar to that illustrated in Figure 3.

Figure 5 is a plan of one of the sheets making up two leaves of the book calendar, the sheets being formed to provide for the binding connection therewith of an adjacent -sheet in the manner illustrated in Figures 3 and t.

Figure 6 is a perspective view showing a modified form of binding somewhat distorted for the purpose of illustration.

Figure 7 is a plan view illustrating the same form of binding.

Figure 8 is a perspective view showing the means for removably connecting the calender book to the backing. Y

Figure 9 is a plan view showing single leaf construction utilizing the type of binding shown in Figure 6. y

Vith particular reference to Figures l to 5 inclusive, wherein there is shown the preferred type of binding for the sheets in making up the calendar book, it is understood that the book includes any desired number of sheets l which Vare folded on the longitudinal median line at 2 to provide two book leaves 3 and 4. 0f course, the number of such sheets employed, that is, the number of leaves of which the book is ultimately composed, will depend upon the type of calendar and upon the number of memorandum sheets desired as part of the book. lf each calendar data surface covers a period of a month, there will be at least twelve sheets required, while if each such surface presents only a week, then there will be at least fifty-two sheets required.

It will be plain from the following description that the calendar dat-a are printed only on one surface of the sheet, that is, on the meeting surfaces of the two leaves resultant from .the folding of the sheet, the remaining or outer surfaces of these two leaves in any instance serving as memorandum pages so that if only enough sheets are included to carry the calendar data, each leaf surface carrying calendar data will be preceded and followed by a memorandum leaf. Of course, if additional memorandum pages are desired, thej.Y will be provided by simply including the additional sheets bound in between the calendar data sheets, and obviously the book may conveniently be made up to contain any requisite number of memorandum leaves, though it is to be understood that in the mini-v mum number of pages necessary to form the calendar, there will necessarily be included the sam-e number of memorandum pages, each of such pages being made up of two leaves. Therefore, in making up the calendar, provision is always made under all circumstances for memorandum receiving pages.

Viith particular reference to the spe mode of binding the sheets together il trated in the preferred form shown in ures l to 5 inclusive, it is to be noted that each sheet, following its folding along the vertical median line to provide the distinctive but duplicate leaves, is formed to present an inherent or integral means for binding that par- 110 ticular sheet in the book. To secure this result, we will assume the leaves opened to present the sheet in fiat form, as illustrated in Figure 5. One leaf of such sheet, for example the leaf 3, is divided or cut on a diagonal line at 5 which starts from a point adjacent theI line of fold 2 in the upper and lower marginal edges of the sheet and extends inwardly toward and at an inclination to the line of fold, terminating directly the line *20 of fold 2. Thus each sheet, or more particularly one leaf of that sheet, has divided from it a triangular tab 6, which tab, however, remains integral with the sheet as a whole at the line of fold 2 on which the sheet folded to form the respective leaves.

The desired number of sheets folded to present the 'requisite number of leaves, with one leaf of each sheet cut to present the triangular tab 6, are' then connected 'together or bound in book form in the following manner: The sheets folded in leaf form, with the triangular tab uppermost, are arranged in superimposed relation so that the tab 6 of a particular sheet or leaf directly underlies the unbroken leaf, as 4, of the next sheet, that is, the leaf of each sheet which is without tab formation directly underlies the tab of the next lower sheet. The tabs are covered on their outer surfaces with adhesive so that such tabs become united to the leaves ofthe next adjacent sheets. Of course, all marginal edges of the folded sheets are in alignment,-

and when assembled in this form, the unbroken leaf of each sheet is united to the nent adjacent sheet through its connection with the tab 6 of the nent adjacent sheet.

As thus arranged, the hinged mounting in the binding of each sheet, that is, two connected leaves, is the tab of the next adjacent sheet, which tab moves on a foldingcenter which is the line of fold of the next adjacent sheet. Of course, each sheet, in opening at the leaves of that sheet, presents an uninterrupted smooth surface folded about its own line of fold 2. The nent adj acent sheet, when opened, will expose the relatively outer surfaces of the leaves of two adjacent sheets folded on the line of fold 2 of one of such sheets. Therefore, the lin-e of fold of any particular sheet constitutes `the axis about which the leaves move in opening the leaves of that sheet, while in opening the book between adjacent leaves of adjacent sheets, the

line of fold of one of such sheets constitutes the axis about which the leaves fold. When the book is opened to spread the leaves of a Vsingle sheet, the line of fold of the leaves is in the plane of that sheet and necessarily the sheet must open perfectly fiat because the axis about which the fold moves is in the pla-ne of the leaves being opened.

In the opening of the book to present facing leaves of adjacent sheets in the same plane, the axis of the opening movement is the line of fold of one of such sheets, and as this separated from the plane of the leaves being opened only by the thickness of one of such leaves, it is apparent that in this particular opening the axial line of movement is substantially in the same plane as of the leaves being exposed, and it necessarily follows that this opening also is a fiat openingor a presentation of the full area o f the respective leaves in the same flat plane.

The result of this particular method of binding is important, and particularly so in connection with calendars for 'which the loin-l ing is particularly designed.'

The importance resides in the fact that no matter at what point the book may be opened, the exposed leaves move easilyand readily into a flat plane and present to the eye a smooth, even, flat sheet and in-this par` ticular is to b e distinguished from the normal or conventional types of binding because under the latter the sheets, when opened, would bendfor curve from the binding point and the juncture of such leaves would-present a depression which would not only prevent the proper opening of the book for calendar purposes but would absolutely prevent theus-e of a considerable portion of the area of each leaf, either fory calendar purposes or for memorandum purposes.

Again, an essential step in connection with a bookso bound is the important results' secured in the printing of the calendar data. This calendar data, no matter what length of time may be covered thereby, is printed on one surface of a sheet, thatis, on that surface of the sheet which delines the inner surface of the leaves when the sheet is folded. Therefore, when this sheet is opened by opening the book, the calendar data is presented in a flat, uniform plane as a result of the binding and in unbroken, uninterrupted form by reason of the integral line of fold of the leaves which together carry the calendar data.

With the calendar data printed on sheets bound as described, the opening of the book to present calendar data presents to the eye an appearance 'as if a single fiat sheet were Y printed with this calendar data, each and every point and detail of which data is as readily discernible and as easily read as any other point. 0f course, the flat opening of the book presents material advantages in connection with the memorandum sheets, for while when the book is opened to present these sheets, they have the appearance of divided sheets along the line of vfold of the Ybook,n evertheless these sheets are together in the same fiat plane and every inch of their surface is exposed in a fiat normal plane and readily and conveniently adapted for th-e inscribing of data thereon.

It may be mentioned that, if desired and as contemplated, the memorandum sheets, whether merely the opposite sides of the calendar data sheets or additional'sheets included for the purpose of memorandum, may be suitably printed, ruled orV otherwise marked for the reception ofdata or, if desired, may be printed forv the dissemination of information. For example, the calendar may be printed on a portion of the memorandum sheets, with cooking recipes, weights and measures, legal information, important events occurring in the calendar period of preceding years, or any other information, withv certain of the sheets left blank for the notation of memorandum important tothe user which, being applied on such sheets, will have the additional advantage of indicating generally the date on which the data were inscribed through markings on the memorandum sheet or through reference to the immediately preceding calendar sheet. This eX- planation is offered merely with a view to showing that the invention is without restriction as to the character of memorandum sheets and whether or not such sheets may be in part or wholly initially printed with details of information or otherwise.

Figures 6 and 7 indicate another type of binding Which has all the advantages of the type of binding previously described, with the additional advantage that it is somewhat stronger, permitting the calendar to withstand a more extended or continued use. In this form, the sheets, exactly similar to the sheets previously described and here indicated at 7, are folded to present leaves 8 and 9. Independent tabs l0, preferably cloth or strong paper or fabric, are arranged to unite each two successive sheets.

Assuming; the sheets in superimposed relation the tabs l0 are secured. to the lower surface of the lowermost sheet and to the upper surface of the second sheet, the tabs e2;- tending as integral members around the lines of fold of such first and second sheets. Thus the tabs are connected to the first and fourth leaves of the first and second sheets. Similar tabs l1 are then applied in exactly the same manner, being arranged out of line with the tabs 10 and being secured to the lowermost leaf of the second sheet and to the uppermost leaf of the third sheet. Tabs l2 are then applied in alignment with the tabs 10, uniting the lowermost leaf of the third sheet and the uppermost leaf of the fourth sheet. This operation is continued, each alternate pair of tabs being in vertical alignment until all or the desired number of sheets are found in book form.

Here again we have the line of fold of any particular sheet. or pair of leaves so arranged that when the sheet or pair of leaves are opened, the line of fold is substantially in the fiat plane of the leaves when so opened. Thus when the book so bound is opened to expose the. leaves of any sheet or the leaves of adjacent sheets, such exposed leaves automatically move into a flat plane because the line of fold of the particular leaf is substantially in that plane and thus all the advantages heretofore set forth for the previous type of binding are inherent in the modified form ofV binding just described. Of course, th-e book for calendar purposes, including; the modified form of binding, is printed with calendar data. as in the preferred form and additional sheets may be introduced for memorandum purposes without limit. y

It may be found desirable in some types of calendars or equivalent structures to employ sheets of material which will not permit convenient folding into the double form illustrated in Figures 6 and 7 such, for er: where the sheets are of cardboard or the yl Je.

Under these circumstances, such sheets, as indicated at 13 in Figure 9, are connected by tabs lll after the manner illustrated in Figures 6 and 7, that is, the tabs connect the relatively outer faces of adjacent sheets, each sheet other than the first and last havingr ends of adjacent tabs connected thereto, that is, one tab will be connected to the relative outer faces of the rst and second sheets, the second tab, in vertical offset plane with respect to the first tab, will be connected t0 the relatively outer faces of the second and third sheets, and so on throughout the binding, following in this particular the manner of tab arrangement and connection illustrated and described with regard to Figures 6 and 7.

An important characteristic of the present calendar is the provision of a calendar memorandum book which, following its use as a calendar, may be preserved for its memorandum purposes indefinitely. This means that the calendar books must be secured to a backing, such as l5, for service as calendars and memorandum books during' such calendar use and be eventually removable from such backing after the calendar period has expired without interfering; in any way with their book form so that they may be preserved as books for the preservation of the memorandum data therein.

To secure this result, each calendar book is secured within the appropriate area on the backing' by strips 16 of fabric or the like having a portion of their lengths, as 17, overlying and secured by adhesive to a surface of one of the central leaves of the book, said securing strip being then secured by adhesive throughout an appropriate length i8 of such strip to the backing. That portion of the strip 16 which is secured to the book is firmly cemented between and to one of the leaves of the book atabout the central portion of the book relative to its thickness, such strip then being rmly secured to the back of the book to one side or the other of the longitudinal center line and extended beyond the book to provide the portion to be secured to the backing. The securing strips 16 thus are firmly secured to the book and to th-e backing and in part overlie the rear edge of the book.

In this arrangement, if the sheets are turned there is obviously no effect on the connection until the point is reached where the tape is attached. The tape is always drawing down on that portion of the book which lies directly beneath it, that is, to that portion to which it is directly attached. If the sheets are further turned until the point Where the tape is attached is pass-ed, the tape no longer pulls on that particular side but begins to exert its pull on the other side, that is, if the leaves were turned to the rip'ht, the tape would be pulling down on theleft half sectic ef the book` Yand when. that leaf to which the tape is directly attached is reached and passed, the tape no longer pulls down on the left side and would naturally become loose if GTI the leaves on the right side were thicker or thinner than those on the left side. As the tape is attached to a leaf in the exact center of the book, the sections of the book on either side of the attached tape are equal so that as the tension of the tape shifts from one side of the book to the other, there is no possible change in the relation of the parts and the book is held just as firmly on one side as on the other.

The book thus as an entirety when closed will lie flat on the backing, and yet by a simple separation of these securing strips from the backing, the book may be removed as an entirety by cutting the tapes, and the calendar book as awhole remain as a complete book for the preservation of the memorandum and used for an inspection of such memorandum indefinitely. If the same mounting is to be used, a new calendar, with the proper calendar being supplied, the securing tabs provided with such new calendar book are merely aiiixed to the backing at the proper points and the calendar is again ready for use as a calendar for the ensuing year or other period and as a memorandum for the same period.

Of course, it is to be understood that notwithstanding the fact that the leaves of the book, when opened, lie fiat, it is nevertheless desirable, in order to avoid displacement of the leaves by casual means, such as wind currents, jarring of the calendar vand the like, to provide some means, such as a holding member 19, which will overlie adjacent leaves when the calendar is opened to prevent casual displacement of the leaves. This holding member, which may be in any form, either acts merely by its own weight or under conventional spring pressure, if desired, and is turned out of the way when a leaf of the calendar is to be turned. Similarly, the calendar book may be indexed at 20 or otherwise provided with means for selecting any particular point or leaf of the book at will.

The characteristic features of the improved calendar are, first the provision of the calendar in book form; second, the use of the calendar not only for calendar purposes but for memorandum purposes; third, the binding of the associated calendar and memorandum sheets so that when the calendar book is o-pened to expose any adjacent leaves such leaves throughout their full area are maintained inthe same fiat plane, thereby avoiding any bending of the leaves or obstruction of a portion of their surface which would be an incidental result of any conventional types of binding; fourth, the provision of the book leaves by folding sheets along the vertical median line to provide, when such leaves l are opened, an unbroken fiat surface and the utilization of this surface for the reception of the calendar data and to insurel an unbroken, easily read and complete surface for the calendar data; and fifth, the securing of the calendar book to a backing in a way to permit full and complete use of such book on the backing for calendar and memorandum purposes and yet permit the ready separation of the book from the backing after the expiration of the calendar period or at any other interval, with such separation preserving the book in its original form as such in order that the calendar and memorandum data of such book may be thereafter preserved.

rlhe calendar is supported from a hanger bar 21 having pivotal and frictional association at 22 with the backing and formed with an opening 23 for engagement with the usual single hanger employed for supporting the calendar. The frictional association of the hanger bar with the backing permits the arrangement of the backing and hanger bar in such angular relation as will compensate for any shifting in the center of gravity of the calendar by the opening of the calendar to present at one side of the longitudinal median line of the sheets a greater number of leaves than on the other side. rilhis, however,l forms the subject-matter of a copending application filed February 16, 1931, Serial No. 516,182, and while described herein as an essential part of theJ calendar proper, is not specifically claimed or otherwise referred to.

l claim :-V

1. A book calendar including sheets folded on the vertical median line to present similar leaves, one leaf of each sheet being divided to form a tab free of the sheet except at the line of fold, the tab of a particular sheet being secured to the immediately adjacent leaf of the next successive sheet.

2. A book calendar made up of sheets folded on a median line to present similar leaves, one of the leaves being divided to separate therefrom at the upper and lower edges tabs connected with the sheet only at the line of fold, each of said tabs of a particular sheet being secured to the immediately adja cent leaf of the next succeeding sheet wherebyV the sheets-are connected toeach other only on the lines of fold of the respective sheets.

1n testimony whereof I affix my si nature.

HUGH E. SHEDD. n. s]

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