US 3561862 A
Description (OCR text may contain errors)
Feb. 9, 1971 p, ALBEE, JR 3,561,862
CONTAINER FOR PROJECTUALS Filed April 22, 1968 INVENTOR.
ATTORNEY A PERCY FREDERICK ALBEE,JR.
United States Patent Office 3,561,862 CONTAINER FOR PROJECTUALS Percy Frederick Albee, Jr., Barrington, R.I., assignor to Q-Panel Corporation, a corporation of Rhode Island Filed Apr. 22, 1968, Ser. No. 723,181 Int. Cl. G03b 21/32 U.S. Cl. 353-122 2 Claims ABSTRACT OF THE DISCLOSURE A container for overhead visual projectuals that simplifies the storage and use of projectuals by enabling the container to be stored vertically on a shelf or in a file drawer through the utilization of a shelf-back.
BACKGROUND OF THE INVENTION shelf-back which could go into a normal library shelf so that basic imprinting identification which is normally found on library books could be used on the spinal part of the shelf-back and the two covers of the book would serve as protection for the transparencies. Further the container would have means associated therewith that would enable it to be readily utilized with existing visual projection systems or by the utilization of auxiliary stages which could adapt the containers to certain types of overhead projectors. Transparencies, accordingly, are in a form which can be immediately taken from a library shelf in accordance with the subject matter and placed on an overhead projector and shown in the proper sequence.
SUMMARY A container for projectuals which comprises a shelfback that is sometimes known also as a binder for a book which is provided with means for fastening projectuals therein and means at the edge of the shelf back along the free edges of at least one cover to prevent the projectuals from falling out from between the side walls of the shelf-back or book and to space the covers. Additionally the shelf-back is provided with stiffening means at the spine portion thereof and means are provided on one cover of the book for fastening the book to an overhead projcctor.
DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view illustrating the container for the projectuals mounted in position on a stage that in turn is received on an overhead projector;
FIG. 2 is a perspective view showing the containing for the projectuals with one cover thereof laid open;
FIG. 3 is a view of the container for the projectuals in closed position;
FIG. 4 is a fragmentary sectional view taken on line 44 of FIG. 1; and
FIG. 5 is a fragmentary sectional view of the container showing an alternate method.
DESCRIPTION OF THE PREFERRED EMBODIMENTS A container generally designated 20 is provided with a back wall or spine 21 and a pair of covers 22 and 23 that are hingedly secured to the spine. Anchoring means gener- 3,561,862 Patented Feb. 9, 1971 ally designated 25 may be located on the cover 22 and in the illustrated embodiment consists of an inverted U staple 26. The cover 22 which may be made of cardboard or other relatively stiff material will serve as the supply tray for the transparencies and will be fastened to the overhead projector. It is desirable, therefore, that this will have longitudinal rigidity and to this end a reinforcing means 28 in the form of a L-shaped metal angle is placed at the juncture of the spine 21 and cover 22. Additionally it is necessary to prevent the projectuals or transparencies 40 from falling outside the normal dimensions of the container (see FIG. 3), and accordingly, it is necessary that a lip be provided at the free edge of the completed container. This lip which is shown in the drawings and designated as 30 is provided at the edge of the cover 22 and is in the form of an L-shaped angle iron. Since the lip 30 is made of an angle iron and extends in the same direction as the stiffening member 28, good stability is provided for the cover 22 and mounting a group of transparencies on the edge of an overhead visual projector. Further in the storage of transparencies, it is important to avoid any compressive force thereon and accordingly the height of lip 30 is preferable the same as the width of the spine. With a semi-rigid cover 23, all transparencies will hang free when the container is stored on a shelf in the position illustrated in FIG. 3 and scratching of the transparencies will be avoided.
To appreciate the manner in which the container may be utilized, an overhead projector having a housing 10 is illustrated with a standard 12 that mounts a lens projection system 14 thereon in adjustable fashion. On the upper projection surface of the housing 10, a stage generally designated 15 has been shown which stage has a transparent window 16 thereon and is provided with a supporting shelf 17 and a receiving tray 18 for holding the projectuals that have been shown. The shelf 17 may be provided with a pair of spaced headed pins 19 and these headed pins will engage in the keyhole slot 32 of the container for the projectuals. An alternate means of fastening the projectual container to the shelf extension 17 of the stage 15 is illustrated in FIG. 5. Here the cover 22 of the projectual container and particularly at the top edge thereof as at 22' has been laid on the shelf 17 and inserted underneath the stiff spring clip means 35 that is fastened to the shelf 17 by rivet means 36. In this fashion any form of container for projectuals may be afiixed to the stage without the provision of special spaced pins such as 19.
A projectual may be moved into position from its normal position on the cover 22 onto the transparent member 16 and by suitable registration devices, which are not illustrated, may be properly placed in position. The registration devices take a variety of forms and as shown to those skilled in the art are utilized for obtaining the registration of overlays of transparencies. After the projectuals have been viewed, they may then be swung out of viewing position onto the tray 18.
The above arrangement provides a means for storing projectuals by subject matter in book-like containers which may be placed on library shelves along with other books and labelled on the spine thereof as to the material of which it contains. A selected book may be readily chosen from this shelf for displaying its projectuals and readily attached to the visual projection device and by utilizing fixed means for maintaining the projectuals within the container at all times, such as the staple 26 the projectuals will never get out of order or sequence and can always be immediately retrieved by the instructor.
1. A container for projectuals comprising a shelf-back having a spine and first and second covers extending therefrom, said first cover being hinged to said spine and metallic stiffening means located between said second cover and fastened to said spine, a lip extending from one of said covers along the edge of that said cover remote from and opposite the spine, said lip extending substantially a distance toward the opposing cover equal to the height of the spine to prevent the projectuals in the container from being crushed together, said second cover having means for attachment to a projection stage of an overhead projector an inverted U staple anchoring means having its legs fastened to the top right hand corner area of said second cover with at least one leg adjacent the lip whereby when the projectual container is detachably mounted on an outwardly extending shelf of a projection stage the projectuals may be flipped upwardly onto a projection window and then 01f to a storage shelf with the projectuals remaining anchored in the container and suspended from the leg of the U staple and held from outward pivoting by the lip.
2. A container as recited in claim 1 wherein the stiffening means comprises an L-shaped flange fastened at the juncture between the spine and said second cover.
References Cited UNITED STATES PATENTS 635,237 10/1899 Cross 402-77 739,436 9/1903 Mumm et a1. 40274X 947,620 1/1910 Payne 40274 1,041,703 10/1912 Tirrill 402--77 1,371,102 3/1921 Lewis 40l02 2,721,556 10/1955 Zandelin 40l02 2,898,919 8/1959 Kwartler 40277 3,279,109 10/1966 Whittum 40106.1 3,438,703 4/1969 Winnernann 353-120 HARRY N. HAROIAN, Primary Examiner