US2297145A - Memo pad index and hinge therefor - Google Patents

Description

Sept. 29, 1942. J. H. GROAT ETAL MEMO PAD INDEX AND HINGE THEREFOR Filed Jan. 22, 1940 INIIIIHIIIIHIII llll ll 0 3 a w 4 v 7 Q0 7 7. fl U J HU WJMU W F M HW W UJ HW U m F kw L1 z M- 3 F0 a )ll hTTURA/Ex Patented Sept. 29, 1942 MEMO PAD INDEX AND HINGE THEREFOR John H. Groat and Luther L. Adcox, Portland, reg.; said Groat assignor to said Adcox Application January 22, 1940, Serial No. 315,052

2 Claims.

This invention relates generally to an index system and particularly to a memo pad index and hinge therefor.

The main object of this invention is to construct an improved form of memo pad index and especially an improved form of hinge for use in connection therewith.

The second object is to construct a hinge which is especially adapted for use in conjunction with memo pads in which the hinge may be easy to construct and apply to the various sheets composing the pad and which at the same time will aiford free movement to the pages and permit the pages to lie in a better relationship at'jall times.

These and other objects are accomplished in the manner set forth in the following specification as illustrated in the accompanying drawing, in which:

Fig. 1 is a plan of the index showing same in an open position.

Fig. 2 is a side elevation of the index.

Fig. 3 is a perspective view of the hinge element.

Fig. l is a fragmentary, enlarged plan of the metal portion of the index showing the hinge base with the hinge element removed.

Fig. 5 is a section taken along the line 55 in Fig. 1.

Fig. 6 is a fragmentary section taken along the line 66 in Fig. 1.

Fig. '7 is a fragmentary, perspective view showing one side of an index tab.

Fig. 8- is a fragmentary perspective view showing the opposite side of the tab shown in Fig. '7.

Similar numerals refer to similar parts throughout the several views.

Referring in detail to the drawing, there is shown an inclined base l0 along whose upper edge is formed a ledge I I and along whose lower edge is formed a ledge 12 between which may be placed the sheets or pages [3 and I4 containing the subject matter of the index.

As shown in Fig. 1 the page I3 is provided with a large letter 15 which in this case is the letter M, while the page M contains a letter I6 which in this case is the letter N. The page I3 is provided with a tab H on one side of which are displayed the letters IB which in this instance are E. and L, while on the reverse side of the tab H are displayed the letters H! which in this instance are M and N.

Turning now to page M, we find that the page having the heading N has a tab on one side of which are displayed the letters 2i, these are 0,

P, and Q and on the reverse side are the letters l9, that is, M and N.

It can be seen by an inspection of Fig. 1 that all of the sections are findable at all times either in the index tabs at the side of the device, or on the open pages l3 and I 4.

It is desirable to provide scallops 22 along the edge of the base I0 which scallops register with the tabs ll to facilitate the fingering of the tabs. The edges 23 are off-set from the innermost portion of the scallops 22 to prevent the accidental movement of the pages below the one intended.

Turning now to the hinge itself, it can be seen that the base H1 is provided with a central slot 24 which extends between the ledges II and I2. Over the slot 24 is placed the hinge base 25 which is an elongated strip of metal having a row of long slots 26 and a row of short slots 21.

The hinge base 24 is secured to the base In by means of the rivets 28.

Turning to Fig. 3 it will be seen that the hinge element consists of a U-shaped channel 29 whose edges 30 and 3| flare outwardly. The edge 30 is continuous except for the small notches 32 which receive the ties 33 formed by the slots 26. The edge 3| is broken by slots 34 which extend across the closed side of the channel but do not sever the edge 30. These slots break the member 29 into a plurality of U-shaped bands 35 which are adapted to pass freely through the slots 36 in the members I3 and M to permit the easy turning of the pages.

In order to assemble this device, it is only necessary to take a stack of pages l3 and I4 and pass the bands 35 through the slots 36, then enter the edges 3| in their respective slots 21 and then spring the edges 30 into the slots 26,

Not only is this form of the device simple to manufacture, install and replace, but it has a decided advantage from the operating standpoint in view of the fact that the edges of the pages l3 and 14 are more nearly in straight alinement than in the case where a hinge element of cylindrical construction is employed,

We claim:

1. In a device of the class described, a hinge base consisting of a flat, elongated strip having two parallel rows of slots formed along the length thereof, the slots in one row being sho r'ter than the slots in the other row, the divisions between the longer slots registering with the opposite shorter slots, a hinge base element associated with said base consisting of an elongated channel of U shaped cross section having the edges of its open side flared outwardly, one of said flared edges being slotted to the other flared edge forming a plurality of short resilient prongs registering with the shorter slots in said hinge base, the second flared edge being slotted to form long prongs registering with the longer slots in said hinge base, each of the slots in the second flared edge being in alinement with a short prong of the first flared edge.

2. The structure as described in claim 1 including elevated stops at both ends of said hinge base equal in height to the thickness of all of the index pages held on said hinge element.

JOHN H. GROAT. LUTHER L. ADCOX.

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