US2883209A

US2883209A - Self contained and combined loose leaf binder and display device

Info

Publication number: US2883209A
Application number: US662449A
Authority: US
Inventors: Edward C Erickson
Original assignee: Individual
Current assignee: Individual
Priority date: 1957-05-29
Filing date: 1957-05-29
Publication date: 1959-04-21
Anticipated expiration: 1976-04-21

Description

April 21, 1959 E. ERlcKsoN 2,383,209

BIN D ND Filed May 29, 1957 April 21, 1959 E. c. ERICKSON ,8

SELF CONTAINED AND COMBINED LOOSE LEAF BINDER AND DISPLAY DEVICE Filed May 29, 1957 4 Sheets-Sheet 2 f ado):

April 21, 1959 E. c. ERICKSON 2,883,209

SELF CONTAINED AND COMBINED LOOSE LEAF BINDER AND DISPLAY DEVICE Filed May 29, 1957 1 4 Sheets-Sheet 5 April 21,v 1959 E. c. ERICKSON 3 0 SELF CONTAINED AND COMBINED LOOSE LEAF BINDER AND DISPLAY DEVICE Filed May 29, 1957 4 Sheets-Sheet 4 United States Pater SELF CONTAINED AND COMBINED LOOSE LEAF BINDER AND DISPLAY DEVICE Edward C. Erickson, Chicago, Iii.

Application May 29, 1957, Serial No. 662,449

6 Claims. (Cl. 281--33) This invention relates to improvements in loose leaf binders of the display stand type, particularly, to a combined loose leaf binder and display device.

It is an object of the invention to provide a loose leaf binder and display device which, when the covers or panels thereof are moved into open positions or into coplanar. relation, may be easily and quickly adjusted to an advantageous angle to the horizontal and thereupon firmly supported at such angle for improved viewing of pages, sheets or other matters supported thereby.

It is flso an object of the invention to provide a device of the stated character, wherein the means for retaining the opened or relatively coplanar panels thereof at an angle to the horizontal, are operable automatically as and when they are angularly adjusted, and when desired, capable of being quickly and simply made inoperative in order that said opened or relatively coplanar panels may be returned to the horizontal and thereupon swung into closed relationship or book-like form.

An equally important object of the invention is to pro vide a combined loose leaf binder and display device whose construction is such that only slight and inexpensive changes and/ or structural additions over and beyond that of a conventional form of loose leaf binder are required for and in its production, thus affording material economies to a buyer and user.

The foregoing, as well as other objects, advantages and meritorious teachings of my invention, will be in part obvious and in part pointed out inthe following detailed disclosures thereof, when taken in conjunction with the accompanying drawings, it being understood that the forms of the invention presented herein are precise and what are now considered to be the better modes of embodying its principles, but that other modifications and changes may be made in specific embodiment without departing from its essential features.

In the drawings:

Figure 1 is a perspective view of my improved combined binder and display device when in its closed position.

Figure 2 is a relatively enlarged perspective of said binder in its opened and display position, i.e., with the component parts thereof in substantially coplanar relation and at an angle to the horizontal.

Figure 3 is an enlarged fragmentary elevational view looking toward the inner faces of portions of the panel and back members and the binder mechanism ring metal showing the leg member swing-ably mounted on and at one side of the upper portion of said ring metal, and in an inoperative position substantially paralleling the panel and back members.

Figure 4 is an enlarged fragmentary transverse section taken on the line 4-4 of Figure 2, looking in the direction in which the arrows point.

Figure 5 is a fragmentary elevational view looking toward the inner faces of portions of the panel and back members and the binder mechanism ring metal showing a modified form of the leg member and swingable mount- 2 ing therefor on and atone side of the upper portion of the ring metal; the leg being shown in an inoperative position substantially paralleling the panel and back members.

Figure 6 is a fragmentary longitudinal section through an intermediate portion of the display binder with the back and panel members thereof in display position, i.e., at an angle to the horizontal, and the leg of Figure 5 in an operative position.

Figure 7 is an enlarged transverse section taken on the line 77 of Figure 6, looking in the direction in which the arrows point.

Figure 8 is a view similar to Figure 5 showing another modified form of leg, the same being in an inoperative position substantially paralleling the back and panel members.

Figure 9 is a view similar to Figure 6, showing said another leg in an operative position.

Figure 10 is an enlarged fragmentary transverse section taken on the line 10-10 of Figure 9, looking in the direction in which the arrows point.

Figure 11 is a view similar to Figure 8, illustrating a further modification of the supporting leg, said leg being in an inoperative position with relation to the back and panel members and substantially paralleling the same.

Figure 12 is a view like Figure 9, showing the further modified form of the leg of Figure 11 in an inoperative position.

Figure 13 is an enlarged transverse section taken on the line 13-13 of Figure 12, looking in the direction in which the arrows point.

Figure 14 is a fragmentary elevational view of another modified form of my invention wherein the panels and back member of the display binder are illustrated in open and fiat or co-planar relation, showing a different supporting leg, the same being swingably mounted substantially parallel to and in a corresponding plane with a por tion of one side of the binder mechanism ring metal.

Figure 15 is a fragmentary longitudinal section through an intermediate portion of the binder with the back member, binder mechanism and panels moved to display positions at an angle to the horizontal and supporting the leg in operative position, and

Figure 16 is an enlarged transverse section taken on the line 16-l6 of Figure 15, looking in the direction in which the arrows point.

Referring in detail to the drawings and, particularly, to the, forlnof my invention shown in Figures 1 to 4, inclusive, the same comprises a pair of substantially stiff complemental panels 1-1 and 2--2 of suitable shape and size, a substantially stiff back member 33 between and hinged or otherwise swingably connected to adjacent marginal portions ofsaid panels l-1' and. 2-Z, and a substantially rigid binder mechanism mounted on and adjacent the normally inner face of the back member 33, and disposed medially and longitudinally thereof in that manner hereinafter more fully described.

The panels 1-1' and 2-2 and the back member 3-3' are each intermediately and continuously transversely divided whereby to constitute juxtaposed upper and lower companionate sections, such as indicated respectively, by the reference numerals l, 2 and 3, and l, 2 and 3'. Said companionate sections are hingedly connected, as at 1a, 2a and 3a. In consequence, the panel and back member sections 1, 2 and 3, when opened along with their companionate sections 1, 2' and 3, and are in co-planar relation (see Fig. 3), may be collectively swung or hingedly moved to positions at corresponding angles to the horizontal, as shown in Figure 2. When in such positions, it will be seen that the lower sections 1, 2 and 3 will be inclined, and so, will afford effectual page or sheet receiving and supporting surfaces.

The binder mechanism 4 consists of the usual divided and openable page or sheet anchoring rings 5 mounted llJ. spaced relation on and transversely of a ring metal 6 whose length and width is only slightly less than the length and width of the back member 3-3.

The lower portion of the ring metal 6 is fastened or riveted, as at 7, to the lower section 3' of the back member 3-3 and is immovable with relation thereto. The upper portion of said metal, that is, that portion adjacent and overlying the inner face of the back member upper section 3, is free of or from the same. Therefore, it will be seen that with opening of the panels and their arrangement in coplanar relation, the upper sections 1 and 2 and the back member upper section 3, may be freely swung away from the ring metal whereby the panels and back member will be collectively positioned at an angle to the horizontal (see Figure 2).

As and when the upper sections 1, 2 and 3 of the panels and back member are swung away from the ring metal 6 and the panels and back member are collectively positioned at an angle to the horizontal, as stated above, it becomes necessary that means be provided and become immediately operative whereby said panels and back member shall be so retained until such time as it is desired to return them to their relatively flat and coplanar relation. To accomplish this, I provide a leg member 8.

The leg member 8 consists of a substantially U-shaped stilf wire, of suitable gauge, whose free ends are loosely or swingably engaged through appropriate openings in one side of the upper portion of the ring metal 6 beyond the panel sections 1' and 2' and the back member section 3 and then closed or looped, as at 9, for an obvious puruse. p The length of the leg member 8 is such that its looped or closed free ends 9 are swingably engaged with the upper portion of the ring metal 6 through the aforesaid openings therein at points definitely beyond the upper edges of the panel and back member lower sections 1', 2 and 3. Hence, its free swinging movement will not be impeded or otherwise interfered with by said lowersections. Also, the depth of said leg member is sufiicient to the extent that when it has swung to the position shown in Figure 2 of the drawings, its lower straight side will have firm and positive bearing engagement with and on the inner side of one of the upper sections 1, 2 or 3 of the panels or back member.

It is preferable that the placement or location of the ring metal openings in which the closed ends 9 of the leg 8 are engaged shall be directly adjacent one side of said metal whereby the swingable mounting of the leg will be effected close to the ring metal side. In this manner, it will be seen and appreciated that the leg will oifer no interference with the connecting, fastening and/or turning of sheets etc., to and on the anchoring rings 5 of the binder mechanism. It is also desirable that the closed ends 9 of the wire leg free ends shall be of the least possible size, for thereby they will offer the least possible interference to or with normal usage of the equipped display binder.

In usage of my improved display binder, sheets, pages or the like, shown in dotted lines in Figure 2 of the drawings and indicated by the numeral 10, are loosely and swingably engaged with the binder mechanism rings 5. These sheets are adapted to lie adjacent and between the panels 1-1 and 22', particularly, when the binder is in its closed position (see Figure l).

The aforesaid panels of the binder may be swung to open positions, as and when desired. In such positions, they will usually be in substantially coplanar relation.

Assuming that it is desired to display the sheets 10 etc., the user need only engage one or both of the panel sections 1' or 2' and upwardly tilt the same. Concurrently with such tilting, the upper panel and back member sections 1, 2 and 3 will swing downwardly, due to their reassaeoe spective swingablc mounting 1*, 2 and 3, which, as will be borne in mind, are coextensive. As the panel and back member sections 1, 2 and 3 swing downwardly, especially, to the position shown in Figure 2 of the drawings, the swingably mounted leg 8 will, by gravity, immediately swing downwardly and to a position at substantially right angles, to the upper portion of the binder mechanism ring metal 6. Being so downwardly swung and positioned, the lower straight side of the leg 8 will bearingly contact with and on the inner surface of either the panel top section 1 or 2, or the back member top section 3. In any event, such contact as between the ring metal mounted swingable leg 8 and said upper sections,

will be entirely sufiicient to collectively retain the same in their angular positions, i.e., at this time, the sections ll, 2 and 3 and 1', 2' and 3 of the panels and the back member will be firmly and securely retained at an angle to the horizontal. Thereby, the sheets 10, mounted on the binder mechanism 4, will be effectually supported on and against either the panel lower section 1 or the panel lower section 2this dependent upon the position of said sheets on said binder mechanism. By the same token, these sheets 10 may be turned from one side to another, whereby to effect displaying functions.

As and when it is desired to close my improved display binder, one need only engage the downwardly and right angularly disposed leg 8, swing the same upwardly out of engagement with the aforesaid upper sections of the panels or back member, and then swing said upper sections upwardly on their respective hinging 1, 2* and 3 so that they are in coplanar relationship to each other and to the lower panel and back member sections. At such time, the panels 1-1 and 2-2 may be swung into their closed relationship, one overlying the other, as clearly shown in Figure 1 of the drawings.

Because the leg 8 is freely swinga'ble on the upper portion of the binder mechanism ring metal 6, it will be understood that when the binder panels are swung into their closed relationship (as above) said leg will be moved or swung along with the particularly adjacent binder panel, offering no impedance to or interference with the closing of said panel or panels.

In the Figures 5, 6 and 7, I have shown a modified form of leg for supporting the hingedly connected upper sections of the panels and back member at an angle to the horizontal, that is, in position to advantageously display sheets, etc., retained by and in the display binder. Therein the panel and back member upper and lower sections are indicated, respectively, by the numerals 1, 2 and 3 and l, '2 and 3; the binder mechanism by the numeral 4, rings at 5 and ring metal at 6.

The ring metal 6 i riveted or otherwise suitably connected to the lower section of the back member as at 7 and is disposed longitudinally and substantially medially thereof. Its remaining or upper portion normally lies adjacent and longitudinally of the back member upper section. Thus, said section and the upper panel sections 1 and 2 may be swung freely away therefrom.

A mounting bracket 11, which may be constructed of stiff wire and of substantially U-shaped form is positioned adjacent one side of the ring metal 6. Its lateral extremities or upper and lower sides are extended under said ring metal and riveted or otherwise fixedly secured thereto as at 11. Therefore, as will be seen upon reference to Figures 5 and 7, the bracket basal portion is outwardly spaced from and .is parallel to the near side of the ring metal; also it has its lower end or side disposed beyond the transversely and continuously hinged edge portions of the panel and back member upper and lower sections for a purpose which will be presently apparent.

The aforesaid modified form of leg, indicated at 6, is of substantially triangular and flat form. However, this triangular form may be deviated from such as conditions or preference may dictate insolong as its lower side shall be of shape and size whereby to effect bearing and supporting contact on and with adjacent portions of the panel and back member upper sections ll, 2 or 3 in the manner shown in Figurefi of the drawings. The free ends of said leg are swingably connected to the bracket basal portion. Inconsequence, the leg may swing freely to and from its supportingly operative position i.e., to the position shown in Figure 6 and, whendesired, to the position shown in Figure 5; also inwardly with the panel Z-2' as when the panels ll' and 2- 2 are moved to their closed and juxtaposed positions, as illustrated in Figure 1.

In Figures 8, 9 and 10, l have shown another modification of supporting leg. Instead of being made of a length of material such as wire, this leg 12 is of solid sheet-like form. its normally lower end is formed or otherwise provided with a longitudinal extension 13 having an opening 113' therein while an opening 13* is formed in the opposite end portion of the corresponding side. Said openings are so relatively spaced that they will loosely receive the upper binder mechanism rings 5 therethrough in the manner shown in said drawing figures. The lower side of the leg is substantially straight and disposed above or beyond and substantially parallel to the transversely continuously hinged jointure between the display binder panel and back member sections. Thus, as land when said binder is openedsothat its panels and back member are relatively coplanar, the leg 12 will lie directly adjacent one of the panel upper sections l or 2 (see Figure 8). When the panel and back member sections are moved or adjusted to positions at an angle to the horizontal, as is also shown in Figures 9 and ll), the leg 12 will, by gravity, swing downwardly. In sodoing, its aforesaid straight lower side will bebrought into bearing contact or engagement with a portion of the inner side of the panelor back member upper sections 1, 2 or 3, and thereby retain them and their companionate lower sections ll, 2" and 3' in the hereinabove stated angular relationship.

To return the panel and back member sections to coplanar relation, one need only engage an outer portion of the leg 12 and swing it upwardly on thebinder mechanism rings 5 thereby disengaging it from the upper panel and back member sections, and allowing the same to swing freely upwardly. The leg will then be substantially flatly adjacent certainot the display binder panels and the binder may be closed, .as hereinbeforedescribed.

Still another modification of the improved display binder is illustrated by the Figures ll, 12 and 13, of the accompanying drawings. in this particular embodiment of the invention, the form of the leg lid for supporting the hingedly connected upper sections 1, 2 and 3 of the panels and back member at an angle to the horizontal whereby the sheets S or the like swingably anchored to the rings 5 of the binder mechanism 4 may be advantageously displayed, is different from the hereinbefore described embodiments. Said leg comprises a single length of wire of suitable gauge or its equivalent. A basal portion 14' of length substantially corresponding to the spacing between the upper binder mechanism rings 5 is provided. Its free end is looped at 15, while a relatively outwardly disposed intermediate bend 16 is formed there in and its remaining end is looped, as at 17. The remaining portion of the wire is outwardly directed and bent into a substantially U-shaped form 13 with its free end fixedly engaged in the outer end of the bend 16 .(see Figures 11 and 12) for an obvious purpose. The outer portion of the U- shaped form or body .18 is downwardly or inwardly offset at 19, lying in the same plane as that or" the remainder thereof. The inner side of the free end portion of this ofi'setld is adapted, at times, to have bearing contact or engagement with an adjacent portion of the inner side of the panel or back member upper sections, particularly, when the panel and back member sections have been adjusted or moved into positions at an angle to the horizontal, as is well shown in Figures 10, i2 and 13 of the drawings.

As and when it is desired to return the display binder panels and back member to coplanar relation (see Figure ll) an outer portion of the leg 14 is engaged and the leg swung upwardly on the binder mechanism rings 5. Thereby, the offset free end portion 1% will be disengaged from the upper sections of the panels and back member permitting them to be swung freely upwardly into coplanar relationship tothe lower sections thereof. At such time, the leg 14 will be positioned substantially flatly adjacent certain of the binder panels. The binder then can be closed, as shown in Figure l, with the leg 14 swingingly following the panels.

Referring to the Figures l4, l5 and 16, I have shown another form of leg, operable for supporting the display binder components in display position, towit, at an angle to the horizontal. Herein, the stiff hingedly connected panels ll-l' and 2-2', back member 3-3', and binder mechanism 4 are constructed, relatively arranged and assembled, as heretofore described.

A secondary still back plate, whose length is somewhat greater than that of one-half of the binder mechanism 4 is flatly arranged below and longitudinally of said mechanism and adjacent the back member 3-3. The width of the plate is slightly greater than that of the binder mechanism though less than the back member. its normally upper end is substantially flush with that of the binder mechanism, and its normally lower end portion extends beyond the back member section 3 and flatly overlies the upper inner side portion of its section 3, as shown in Figures 14 and 15. One of the rivets 7 used to secure the binder mechanismd to the back member 33', particularly, the intermediate one, permanently engages through the binder mechanism, the extended overlying lower end portion of the secondary back plate and the upper portion of the back member section 3, thereby securely uniting them in the illustrated assembly.

Formed on and disposed along one side of the upper portion of the back plate is an inturned flange 21, the length of which is less than the depths of the near panel and back member sections 1, 2 and 3.

A substantially U-shaped supporting leg 22, of depth approximating that of the plate flange 21 having inturned free ends 22, is positioned adjacent the plate flange. Its inturned ends are pivotally received in the open ends of said flange; thereby, the leg is swingably mounted with relation to the secondary back plate 26 and the binder mechanism 4 in a substantially corresponding plane but above the bottom of said .plate. In its inoperative position, it will thus be seen that the supporting leg 22, when inoperative, will lie adjacent or over either the panel sections 1 or 2 (see Fig. 14).

As and when the panels and the back member are swung into relatively angular relation, as is shown in Figure 15 of the drawings, it will be seen and understood that the swingably mounted supporting leg 22 will, by gravity, swing downwardly to a position at an angle with relation to the secondary back plate 24). In so doing, the lower or inner side of said leg will abuttingly engage the adjacent panel section 2 and will prevent that section, plus the panel section 1 and the back member section 3 from moving upwardly. Consequently, the display binder panels and back member will be firmly and securely retained in easel-like form at an angle to the horizontal with the sheets S in an advantageous display position.

When it is desired to move the device from its sheet displaying position, as aforedescribed, one need only engage and swing the supporting leg upwardly out of abutting engagement with the panel section 2. Thereupon, said panel section and the panel section 2', plus the back member section 3, may be collectively moved to the positions shown in Figure 14. If desired, the panel sections 11 and 2'2 may be then swung unto closed booklike or overlying relationship.

Because the inturned ends 22 of the supporting leg 22 are arranged in a plane substantially corresponding to that of the binder mechanism 4 and are above the bottom of the secondary back plate 20, it will be appreciated that no interference with the complete closing of the binder panels 11 and 2-?.', will be incurred.

From the foregoing, it will be seen that through the medium of the hereinbefore described forms of my invention, I have provided a combined loose-leaf or sheet type binder and display device of simple and economical constructions. The device may be used to receive and retain a plurality of leaves, pages or sheets, such as I have hereinbefore generally indicated by the letter S. When opened and in flat relation to a receiving surface, said leaves, etc., may be turned in book-like fashion. Addi tionally, as and when desired, the panels and back member constituting sections l1, 22' and 3--3' may be conveniently and quickly adjusted or moved from the aforesaid flat relationship to positions at an angle to the horizontal. Concurrently with this sort of movement, the particular supporting leg provided to the device will swing automatically downward to a position where its inner side or portion will abuttingly contact or engage with adjacent portions of the inner sides of the panel or back member upper sections 1, 2 or 3 and firmly retain the same and their companionate sections 1', 2 and 3 in said angular positioning. Thus the leaves, etc. S swingingly mounted on the rings 5 on the binder mechanism 4 will be supported in inclined positions on or from the lower sections 1, 2' and 3 and the ring metal 6 of said binder mechanism. They may be turned for successive or selective display in book-like fashion.

And, as heretofore described, the panel and back member sections may, when desired, be as conveniently and quickly returned to their flat or coplanar positions merely by engaging the device equipped supporting leg and swinging it upwardly or inwardly with relation to the ring metal 6 of the binder mechanism. Thereby, the panel and back member upper sections 1, 2 and 3 are free to be collectively swung upwardly. They and the leaves, pages or sheets may thereupon be swung to their closed relationships, as illustrated by Figure l of the drawings.

I claim:

1. A combined binder and display device, comprising substantially stiff panels, a substantially stitr' back member between the panels hinged to the adjacent marginal portions thereof, said panels and back member being transversely and continuously intermediately divided throughout their respective widths, and said divided portions of the panels and back member being hingedly interconnected, a substantially rigid binder mechanism ring metal overlying the normally inner face of said back member the lower portion of which is connected to said back member below its transverse dividing and the upper portion thereof being free of the back member above said dividing, and a leg member directly hingedly connected to a side portion of said ring metal above said back member dividing for free swinging movement at substantially right angles thereto as and when the lower and upper portions of the back member and panels are collectively swung to positions at an angle to the horizontal and thereupon automatically abuttingly engageable with the inner side of at least one of said upper portions.

2. A combined binder and display device comprising substantially stifi? panels, a substantially stiff back member between the panels, hinged to the adjacent marginal portions thereof, said panels and back member being transversely and continuously divided intermediately of and throughout their respective widths and said divided portions of the panels and back member being hingedly connected, a substantially rigid ring binder mechanism longitudinally overlying the normally inner face of said back member the normally lower portion of which is secured to said back member below its intermediate transverse dividing and the upper portion thereof being free of the back member above said dividing, and a leg member freely and swingably connected to certain of the rings of said binder mechanism disposed in proximity to and above said back member dividing adjacent one side of the binder mechanism adapted for free swinging movement at substantially right angles thereto upon collective hinged movement of the lower and upper portions of the back member and panels to positions at an angle to the horizontal and thereupon automatically abuttingly engageable with the inner side of certain of said upper portions.

3. A combined display device, comprising substantially stiflf panels, a substantially stiff back member between and hinged to the adjacent marginal portions of the panels, said panels and back member being transversely and continuously intermediately divided throughout their respective widths and said divided portions of the panels and back member being hingedly interconnected, a substan tially rigid binder mechanism overlying the normally inner face of said back member the lower portion of which is connected to said back member below its transverse dividing and the upper portion thereof being free of the back member above said dividing, and a leg member hingedly connected to said binder mechanism above said back member dividing for free and self-acting swinging movement at substantially right angles thereto as and when the lower and upper portions of the back member and panels are collectively swung to positions at an angle to the horizontal and thereupon abuttingly engageable with the inner side of at least one of said upper portions.

4. A combined binder and display device, comprising substantially stilt panels, a substantially stifi back member between and hinged to adjacent marginal portions of the panels, said panels and back member being transversely and continuously intermediately divided throughout their respective widths and said divided portions of the panels and back member being hingedly interconnected, a substantially rigid secondary member overlying the inner face of said back member the lower portion of which is connected to said back member below its transverse dividing and the upper portion thereof being free of the back member above said dividing, and a leg member hingedly connected to a portion of said secondary member above said back member dividing for free and self-acting swinging movement at substantially right angles thereto as and when the lower and upper portions of the back member and panels are collectively swung to positions at an angle to the horizontal and thereupon abuttingly engageable with the inner side of at least one of said upper portions.

5. A combined binder and display device, comprising stifi panel members, a substantially stitf back member between and hinged to the adjacent marginal portions of the panel members, said panel members and back member being transversely and continuously intermediately divided throughout their respective widths and said divided portions of the panel members and back member being hingedly interconnected, a substantially rigid binder mechanism overlying the normally inner face of one of the stifi members the lower portion of which is connected to said last mentioned member below its transverse dividing and the upper portion thereof being free of said last mentioned member above said dividing, and a leg member hingedly connected to a portion of said binder mechanism above said last mentioned member dividing for free and self-acting swinging movement at substantially right angles thereto as and when the lower and upper portions of the back member and panel members are collectively swung to positions at an angle to the horizontal and thereupon abuttingly engageable with the inner side of at least one of said upper portions.

6. A display device, comprising substantially stiff sheetlike members hingedly interconnected at their adjacent longitudinal sides and continuously divided and hingedly interconnected throughout their respective widths, a substantially stiff secondary member arranged adjacent and longitudinally of the inner face of one of the sheetlike members having its lower portion aflixed to the lower portion of said One sheet-like member, and a leg mounted for free and self-acting swinging movement on the upper portion of the secondary member beyond the point of divided and hinged interconnection between the sheet-like members as and when the same are collectively swung to positions at an angle to the horizontal whereby References Cited in the file of this patent UNITED STATES PATENTS Schade Oct. 19, 1948 Finch Oct. 30, 1951 OTHER REFERENCES Sales Tools, published by Sales Tools Inc., July 23, 1954.