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Publication numberUS1919922 A
Publication typeGrant
Publication dateJul 25, 1933
Filing dateDec 19, 1931
Priority dateDec 19, 1931
Publication numberUS 1919922 A, US 1919922A, US-A-1919922, US1919922 A, US1919922A
InventorsJr Franklin Baker, Lodewyk J R Holst
Original AssigneeBaker
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Game projecting apparatus
US 1919922 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

July 25, 1933. 9 F. BAKER. JR; Er ALl 1,919,922

Y GAME FROJECTING APPARATUS Filed Dec?. 19, 1931 3 SheelZS-Sheefl l July 25, 1933. F. BAKER, JR., ET AL GAME PROJECTING APPARATUS Filed DeC. 19, 1931 5 Sheets-Sheet 2 July 25, 1933. F. BAKER, JR., Er Al. 1,919,922

GAME PROJEC'TING APPARATUS Filed Deo. 19, 1931 3 Sheets-Sheet 3 A Patented luly 25, 1933 UNITED STATES PATENT OFFICE.


Our invention relates to apparatus designed to visually project upon a screen the actual playing of a game ofcards, chess or the like, so that the whole play of the game may be visible to an-audience and the object of our invention is to provide a simple and efficient projection apparatus for inaking this possible and, generallyr speaking, out invention consists in providing 1n connection with a source or sources of light, one

or more light directing means adapted to direct a beam or beams from said light source in an upward direction and with evenly distributed intensity. Located above said light directing means we provide a proj ection lens and reflector, adapted to receive the beam or beams of light from the directing means and change their direction from an approximately vertical to an approximately horizontal direction. In the posterior focal plane ofthe projection lens we locate a'screen upon which the beam or beams of light are focused and, as this is an essentially novel feature of our apparatus, we locate between the light directing means and the projection lens at the anterior focal plane of the projection lens an approximately horizontal transparent table, preferably of plate glass, which may be made up .of one or more sections and which is of such dimensions as to transmit the beam or beams of vlight coming from the light directing means to the projection lens and finally in connection with the apparatus above briefly indicated we provide transparent or translucent platens adapted to lie flat upon the transparent table and inscribed with insignia indicating the cards or men used in playing the game; the insignia where color differences exist in the cards or men will be inscribed in proper transparent colors.

The details and modifications of our generic invention will be best understood as described in connection with the drawings,

T in which' Figure l indicates a series of platens giving a general indication of the character of such inscriptions or insignia as are to be made on the platens for the playing of different kinds of games.

Figure 2 is a diagrammatic view in vertical sectional elevation, illustrating one modification of our apparatus.

Figure 3 is a similar diagrammatic sectional view showing akmodication of the ing the use in place o a single projection.

lens and single reflector for changing the direction of the beam, a grouping of five such projector lenses and reflectors.

Figure 5 is a plan view of the transparent platen receiving table provided with upwardly projecting screens adapted to conceal platens lying in front of each player of, for instance, a card game, from the vision of the other players at the table, this view also indicating the use of a table in connection with a group of light beams, as provided for in Figs. 3 and 4.

Figure 6 is a perspective view of the projection system, as indicated in section in Fig. 1, certain details being indicated by dotted lines.

Figure 7 isa perspective view of the projlection apparatus as shown insection in Fig.

Figure 8 is a plan view of the transparent table for-the reception of the platens, properly inscribed, so as to give/the appearance on the screen of a chess board.

The platens used in connection with our projection apparatus must be of transparent or light transmitting character and can be made of celluloid or glass, properly inscribed with indicia indicating the value of the card, piece or man used in playing a game, as indicated in Fig. 1.

A, Figs. 2 and 6, is a light source, conn veniently an electric bulb, which in these figures is located in one compartment of .a light box B in front of a reector a, said light box being divided by a partition B1., in which partition is located a condenser lens C, which directs the light beam from the lamp against a reector C1, which in turn directs the light beam upward through a condenserlens C2, through which the Vbeam issues in an upward direction until it strikesthe mirror-J), which in turn directs the beam into the projecting lens E, throughA which the beam is directed in a generally horizontal direction against the screen F (Fig. 6) which screen is located in the posterior focal plane of the projecting lens E. Gr is a hori- Y zontal or approximately horizontal transparent table located in the path of the beam,

' of the transparent table.

directed upward by the -condenser mechanism at a point corresponding to the anterior focal plane'of the projecting lens E. In Figs. 2, and 6, I have indicated supporting devices for the reflector D and lens E, indicated at H and have also indicated the support of the transparent table on the top of the light box but it will be understood that the various parts of my apparatus may be supported in any convenient way.

' In Figs. 3 and 4, the light box or housing for the source of light and light directing means is indicated a't b and is divided by vertical partition b1 into a central chamber and four symmetrically disposed side chambers, as plainly shown in Fig. 5. Below the light source, indicated at A, is located a parabolic reflector adapted to direct the light beam upward through the central part of the transparent table located opposite to the source of light. In the partitions b1 are condenser lenses 0 through which light beams issue into contact with a reflector c1,

which direct the rays upward through condenser lenses 02 through marginal portions In these views I have shown a modified form of the transparent table made up of a central portion Gr1 and marginal portions G2, which are located ata lower level than the central portion. Uponeach marginal portion is located a screen K, of such shape that when a player lays his cards or platens upon the marginal portion in front of him the screen will conceal the platens from all -other players seated at the table. The light beam directed upward centrally by the reflector passes through the central portion of the table and the light beams directed upward by the condensers pass upward through the marginal portions of the table, as indicated in Figs. 3 and 4, and in Fig. 3, these beams are all received upon the single mirror D and directed by the mirror through the projecting lens E against the screen, not shown. IIn the construction shown in Fig. 3, it is obvious that the marginal portions of the transparent table will not lie in the same focal plane as the central portion and I therefore provde above the central portion an auxiliary lens L, of vsuch a character that it shortens the focal distance of the central beam. In Fig. 3, I have shown the reflector D and lens E as secured in a box M,- supported on a v plate M1, in-turn supported by four posts M2. In the modification illustrated in Fig. 4,' the light box directing means and trans-A parent table are the same as in Fig. 3, but in place of using a single mirror and projecting lens we use five projecting lenses, E1, E2,

E3, E", E5,'which, as shown, are arranged with their axes approximately vertical and in the axis of the vertical beams and above platens carry the pictures indicating the value of each platen through the reflectors and y projecting lenses and project the pictures lupon the screen exactly as the platens are played upon the table.

Having now described our invention, what we claim as new and desire to secure by Letters Patent, is U 1. A game projecting apparatus comprising a source of light and means for dlrecting a beam from said source upward, a reflector and projection lens arranged to receivethe light rays issuing`from the source of llght and transmit them in an approximately horizontal direction, a screen located approximately in the posterior focal plane of the projection lens and an approximately horizontal transparent game table adapted to support a series of transparent cards used in playing a game, said table being located between the source of light and the projection lens in approximately the `anterior focal plane of said lens, in combination with a series of transparent platens adapted to 11e flat upon the transparent table above the source of light and each inscribed with 1ndicia indicating the character of a movable object used in playing a game.

-2. A ame projecting apparatus as called for in c aim 1, in which a series of screens extend upward from the face of the table,

separating a central area of the table from

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2529664 *Feb 14, 1948Nov 14, 1950Ward HickokVisual educational projector
US2555402 *Oct 17, 1950Jun 5, 1951Charles Beseler CompanyOptical indicator means for use with copy projection apparatus
US2564057 *Aug 20, 1947Aug 14, 1951Harold G FitzgeraldProjector for handling transparent plates
US2603125 *Aug 16, 1949Jul 15, 1952Ada FuegemanCombination enlarger and projector system
US2863356 *Aug 30, 1951Dec 9, 1958Ernest W GoldbergShiftable film bed and optical system for projectors
US3205765 *Apr 20, 1961Sep 14, 1965John ZoltaiSchematic diagram composing
US3207029 *Oct 19, 1961Sep 21, 1965Charles Beseler CompanyManually adjustable overhead projector mounted on a desk
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U.S. Classification353/34, 273/148.00A, 353/36, 353/37, 273/237, 273/148.00R, 273/295, 353/DIG.300
International ClassificationG03B21/132, A63F3/02, A63F1/06
Cooperative ClassificationG03B21/132, A63F3/022, Y10S353/03, A63F1/067
European ClassificationG03B21/132