US2005559A - Automatic bookmarker - Google Patents

Description

June 18, 1935. R. R. ROBIERTS AUTOMATIC BOOKMARKER Filed May 1, 1933 w mw EE IK Patented June 18, 1935 OFFICE AUTOMATIC BOOKMARKER Raleigh Raymond Roberts, Redlands, Calif.

Application May 1, 1933, Serial No. 668,822

4 Claims.

My invention relates to improvements in automatic book marker and the object of my improvement is to provide an improved construction of an automatic book-marker, that is, a

device adapted to be engaged with some portion of the book and extended between the leaves for keeping the place of the reader and adapted to pass from leaf to leaf automatically as the leaves are turned by the reader. Also, an additional purpose is to provide a small handy marker that can be incorporated into the book binding by being fastened to outer cover at time of manufacture of books. The long-felt need of a small automatic marker by readers and owners of books, to prevent folding of leaves or pages, and tend to prevent the breaking of binding and similar damage to books caused by placing articles in book or opening book and placing face downward to hold place, has been the main factor in conceiving this marker. It consists in the elements and features of construction shown and described, as indicated in the claims and in the drawing.

In the drawing:

Figure 1 is a perspective view of book equipped with three markers, to show interchangeability embodied in this invention.

Figure 2 is a side elevation of the marker embodying this invention.

Fig. 3 is a top view, and

Fig. 4 an end view of the marker shown in Fig. 2.

Fig. 5 is a side view of a modified form of marker.

Fig. 6 is a top view, and

Fig. 7 an end view of the marker shown in Fig. 5.

Figs. 8 and 9 are end and side views respec- 40 tively of the marker shown in Fig. 2 as it appears in place upon a closed book.

In the drawing the body or assembled leaves of the book, with which the device is shown in use, is indicated as A. The side covers of book as B. The device embodying the invention comprises, as shown in the drawing, a metal (or other suitable material) clip C upon which is mounted a coil spring at D. The inner surface of clip C is lined with thin felt R. The spring E extends upward, slanting on an angle toward the open end of clip 0 indicated as G in Figure 2. At the last turn of coil spring E at top, the wire is extended on a curve inward and downward, starting at F to form loop or finger H. The wire forming spring E terminates in a loop H approximately at right angles to the axis of spring E. Loop H is completed by winding the free end of the wire upon itself at point indicated in drawing at O. The free end of loop is bent slightly downward and toward point D to form an angle indicated at I. The coil spring E is mounted on sleeve C at an angle to compensate the deflection of spring "2! as loop H is lifted to place. As the pages are turned the contraction of the spring forces the loop H downward on the succeeding pages or leaves, thereby holding pages down until they are again turned by reader or user. 15

The construction of this unit is of any material, for sleeve or base, that can retain its shape sufiiciently to hold spring in place. Spring consists of small gauge wire, steel or brass. Various means are employed to fasten spring to base. The device as shown in Figure 2 is placed over edges of book B in Figure 1 at places indicated (according to claims) as K. W. M. It can be placed on any edge of B as shown in Figure 1 as K. W. M. The book is then held or placed upon table, etc., and cover J is raised and spring 'E with loop H is allowed to settle to its position with the loop H resting on page L. As page L is raised or turned the edge of loop H engages edge of page L and is lifted until edge of page L passes beyond the curve of loop H, allowing loop H to again settle to its position on next page. The slight angle in loop H is formed at I to prevent spring from slipping when extra thick books are used.

The gradual turning of leaves lessens the thickness of book under loop H causing the tension on spring E to be lessened and allows spring E to assume its normal position. This condition continues until all leaves are turned and the back cover of book is exposed to View.

When book is closed the twist in loop H and angle at I serve as a medium to hold pages apart. As book is closed the tension on spring E holds loop H in. position so that it is not disengaged, thereby holding the readers place until book is again brought into use.

The spring E instead of being attached to clip C may terminate at the lower end in a large loop P glued between the cover B and binding sheet of the book.

I claim:

1. A book marker having in combination, a

clip consisting of a fold of sheet metal, a coiled spring rising approximately at right angles from said clip and attached. thereto and. pliable enough to be bent over so that the terminal of the spring may be held beneath the tongue of the clip.

2. A book marker consisting of a base for attachment to a book cover, a coiled spring rising perpendicularly from said base and terminating in an uncoiled portion integral therewith and at approximate rightangles thereto.

3. In a book marker, the combination of a clip comprising a flat plate and a spring tongue.

integral therewith, and a coiled spring rising perpendicularly from the tongue of said clip and attached thereto, and terminating in a loop integral therewith.

4. A book marker having in combination a clip consisting of a piece of sheet metal folded to form an upper leaf and a lower leaf, a coiled spring attached to the upper leaf of said clip with its axis perpendicular thereto, and having a terminal portion extending laterally at ap- 10 proximate right angles to the 'axis' of said spring.

RALEIGH RAYMOND ROBERTS.

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