Apparatus for playing an educational game including apertured code means
United States Patent n 1 Hesener Apr. 22, 1975 l l APPARATUS FOR PLAYING AN EDUCATIONAL GAME INCLUDING APERTURED CODE MEANS {76] Inventor: Walter Hesener. 66. Rue de la Prulay. l2l7 Mcyrin. Geneva. Switzerland [22] Filed: July 25. 1973 [2 ll Appl. No.: 382.504  
  Related U.S. Applicatlon Data [62] Division of Scr. No. l29.4b9. March 30. l97l. Pat.  
 [30} Foreign Appllcation Priority Data March 3]. I970 Switzerland ..4969 May 29.1970 Switzerland... ....8l36 Sept. 5. 1970 Switzerland... ..l3300 Nov. 20. 1970 Switzerland ..l7285 Nov. 30. 1970 Switzerland 17659 [52] U.S. Cl. 35/48 R; 35/9 A; 35/9 E [51] int. Cl. G09b 3/00 58 Fleld of Search 35/9 R. 9 A. 48 R 43 43d 44d 43d [56] References Cited UNlTED STATES PATENTS 3.059.346 10/]962 Swimmcr ct al. 35/9 R 3.324.577 6/1967 Davis 35/48 R 3.344.536 Iii/I967 Davis 5/43 R 3.504.445 4/1970 Goldmark ct a 35/9 A 3.590.498 7/l97l Landzerg 35/9 A 3.745.673 7/l973 .limcrson et al 35/9 A 3.780.453 l2/l073 Hcsencr 35/48 R Primary [:Iruminer-John H. Wolff Allurm&#39;y. Agent. or Firm-Flelt &amp; Jacobson [57] ABSTRACT Apparatus for playing an educational game which utilises code means in a code bearing means. Movement of the latter is indicative of a correct answer. The code means are constituted by a pattern of apertures in the code bearing means. The latter is preferably a disc. The apparatus can check the answers to a large number of questions.  
 7 Claims. 23 Drawing &#39;Figures APPARATUS FOR PLAYING AN EDUCATIONAL GAME INCLUDING APERTURED CODE MEANS This application is a divisional of US. Pat. Application Ser. No. DEL-4b). now LES. Pat. No. 3.780.453. issued on Dec. 25. I973. filed on Mar. 30. l97l.  
  The invention relates to apparatus for playing an educational question-and-answer game. It may be used as a teaching medium for schools or for entertainment.  
  Known apparatus for playing an educational game is either very complex and expensive or else has a very poor veri ying capacity. that it to say. they can only confirm the answers to a limited number of qttestions. and this may involve a repeat of a given pattern of answers which makes it easier for a user to defeat the machine.  
  The present invention aims to provide an easily operated verifying apparatus with a high verifying capacity.  
  According to the invention. the apparatus for playing an educational game comprises:  
 il. II CDYCI&#34;.  
 h. at least one setting means operable from outside the cover to be moved into at least two answer positions. each such answer position being representative of one of several possible answers to a given question and each such setting means including a portion thereof hat is capable of transmitting radiant energy:  
 . support means carrying the setting means and constructed to allow the setting means to move into said positions relative to the support means.  
 . code hearing means supported by and at least partly concealed by the cover and movable relative to the support means.  
  bearing means. said apertures being arranged in a pattern to constitute a plurality of code means carried by the code bearing means. the setting means being movable between positions where -its energy-transmitting portion is respectively aligned and not aligned with an aperture of each said code means at any specific position of the code bearing means relative to the support means: means permitting radiant energy to fall on the underside of the code bearing means to pass and to be intercepted according to whether the said energytransmitting portion of the setting means is aligned or not with an aperture of the code nteans. passage of said radiant energy then corresponding to positioning of the setting means in an answer-correct position and interception to an answer-incorrect position of the setting means; and  
 h. indicating means for indicating the position of the code bearing means relative to the support means.  
  The code member may be combined with a code orienting means. It is then possible for both the code hearing means and the code orienting means to have complementary code apertures moulded into thent. so that on relative displacement of the two parts the sequence of correct answers. i.e.. the resulting pattern of code means will also be changed.  
  A specially preferred feature of the invention is the construction of the setting devices as sliders.  
  Further. according to an advantageous version of the invention. a support for transparencies may be coupled with a movably mounted member ofthe verifying appu&#39; ratus so that the two are functionally connected. and  
 . a plurality of apertures in and defined by the code 2 the apparatus is supplemented by t transparency viewing device.  
  In a modified construction. the erifying apparatus is combined with a page dispenser having a cavity to receive pages. in such a way that the page cavity is secured against removal of a page by locking. if at leas one setting device has been incorrectly set.  
  Preferred embodiments of the invention will now be described by way of example with reference to the accompanying drawings. in which:  
  FIGS. 1 and 2 show apparatus according to the inveir tiott provided with a two part code bearing means mounted rotatably and axially displaceably in a housing. FIG. 2 being a partly broken away plan view and FIG. I being in cross section along the lines l-l of FIG. 2&#39;.  
  FIG. 3 shows a partial cross section of apparatus where the setting means are carried by supporting member supported by the housing. the housing and supporting member being relatively displaceable;  
  FIG. 4 is a partial cross section of apparatus htoing a code bearing member lived within the housing and the setting means carried in a similar manner to that il lustrated in FIG. 3&#39;.  
  FIGS. 5 to 8 show an apparatus in which the types of each question answered by moving the setting means is verified by an illuminated portion of the setting means. FIG. 5 showing a partial cross section. FIG. 6 showing a partial top view. and FIGS. 7 and 8 showing parts of operating means for an electric light;  
  FIG. 9 shows an apparatus with a centrally mounted verifying light;  
  FIGS. It) to 12 show apparattls in which the correct answer is marked on the code bearing means and can be viewed through an aperture defined by the housing when the setting means have been moved to an additional position. and in which an error recording strip is received in the housing to provide a permanent record of questions where the answer has to be so discovered. FIG. It) showing a partial cross section elevation of the apparatus and FIGS. II and 12 showing respectively plan view and cross section portion of the apparatus where the error recording strip is inserted;  
  FIG. l3 shows a partial cross sectional elevation of apparatus in which an additional position is provided for the setting means for the same reason as described with reference to FIGS. It) to 12. but instead of providing an error recording strip. the apparatus is constructed so that the setting means cannot be removed from the said additional position whereby it is Clear which questions could not be answered without first discovering the answer:  
 FIGS. l4 and 15 show respectively a partial plan view -in partial cross section. a two part code bearing means.  
 that is to say a code bearing means and a code orienting means which have co-operating parts to form with the code means;  
  FIGS. 16 and 17 show similar views to FIGS. 14 and 15 but show another embodiment of the code means;  
  FIGS. [8 and I9 show respectively a partly broken away elevation and a partial view. again partly broken away. of apparatus co-operating for housing and dispensing pages bearing the questions.  
  FIG. 20 is a cross sectional elevation of apparatus having a code bearing member in the form of a band carried by two rollers and incorporating a page storing and dispensing device; and  
  FIGS. Zl to 23 show embodiments of the invention including trattsparencies and means for viewing them. FIG. 21 being a partial broken away plan view of the transparency holding and viewing portion of apparatus coupled to the apparatus of FIG. I. FIG. 22 showing a cross sectional elevation of apparatus similar to that ol&#39; i-&#39;l(i. 20 where the page dispensing means are replaced by transparency viewing means. and FIG. 23 showing a partial cross sectional elc\ation of another embodiment of the transparency storing and viewing device coupled to the apparatus of FIG. I.  
  la the apparatus shown in FIGS. l and 2 the housing comprises a cover I. acting as a support means for setting means 9 and the base 2. A code member. comprising in this cmbodintent a lower supporting disc 3 serving as a code orienting means and a code disc 4 serving as a code bearing means. is mounted rotatably and asially displaceably on a central pin 2r! on the base 2. Pegs 3n engage in holes of a circle of holes 4a to prevent any relative turning between the two discs. The supporting disc 3 has a central portion 3h shaped as a tttrning knob and projecting through the cover I of the housing: the code bearing means (disc) 4 has an integral annular portion 4h surrounding the portion 3h. A spring 6 servin as a biasing means urges the discs 3. 4 upwardly and generates a torque between the base 2 of the housing and the said discs. To prevent overwinding ofthe spring (I when the two discs are rotated with respect to the housing as will be described. a friction clutch is disposed between the lower end of the spring 6 arid the housing base 2. The clutch is best seen in H6. 2 and com rises an annular member 7 which is broken by a slut 7a. The annular member 7 is located within an area ounded by an upstanding annular wall 7b of the housing and the annular member is expanded by a compression spring 8 so that its peripheral surface resiliently grips the wall 7h. The strength of the spring 8 is such that when the torque is generated in the spring 6 reaches a predetermined force the annular member 7 slips within the walls 7b thereby preventing further torque being generated in the spring 6 during winding. The setting means are in the form ol&#39;sliders 9. They are mounted in a circular arrangement substantially radially displaceably in guide grooves la in the cover I. The lower edge portions 911 of the guide webs 9a of the sliders are somewhat wider than the guide grooves lit and engage over the lower edges of the grooves. The sliders 9 can thus be inserted in the grooves so that they will be held in them by the resilience of the material of the housing. The guide webs 9a are each provided with a peg 9e at the bottom. The sliders 9 have an inner neutral position marked by a circle 1c on the cover I of the housing. When they are in this position the pegs 9! are located between the locking pegs 4c of an uninterrttptcd circular row of pegs on the code bearing means. so that a verifying step of the coupled discs 3. 4 (resulting from the torque ofthc spring 6) is prevented so long as there is still a slider 9 in its neutral position. ln this embodiment of the invention the code means permits tltree possible answers so there are three possible answering positions for each slider 9. These positions are marked on the housing at the places 10 with one. two and three dots. The code means is formed by projections in the form of generally cylindrical pegs 4d lying on three coaxial circles. The arrangement is such that for each row of pegs on a radius. only two pegs 4t! and one space will be disposed on a radius. Adjacent radial rows of pegs are separated by an attgle of ii iii this embodimettt. The gap resulting front the a sence of the third peg in each case determines the Cy-H&#39;CCi adjustment position of the slider 9 iii question. .&#39;hus if all the sliders 9 are pushed out of their neutral position (i.e.. free of pegs 4t) and positioned so that all the pegs 9c coincide with gaps in the code means. the two discs 3. 4 will be free to move together relative to the support means for the sliders and will carry out a rotary movement. This amounts to an anti-clockwise verifying step in view ofthe winding direction ofthe spring 6. This rotary movement is of (1. since. when the discs 3. 4 have turned through 6&#34;. the adjacent pegs 4d of the code meatts will strike the pegs 9c of the sliders 9. To enable the sliders 9 to be set more securely they are provided with integral locking springs 9r! which interact with locking recesses lb formed in the underside of the housing cover.  
  Assuming the apparatus to be equipped with twelve sliders 9. twelve questions would have to be answered per verifying step of the discs- 3. 4. As a single verifying step is 6. the discs 3 and 4 carry out sixty verifying steps per revolution. corresponding to a verifying capacity of 720 individual answer verifications.  
  To enable the apparatus to be set to any desired grottp of twelve questions. an indicating means formed by a continuous row of numbers 3c is provided on the outer. peripheral portion of the supporting disc 3. projecting beyond the code disc 4; this row of numbers can be viewed through a group aperture I].  
  lit use. in order to set the apparatus to a given group of questions. the two coupled discs 3. 4 are pressed down by means of the knob 3!) against the compressive action of the spring 6. until the slide pegs 9c are no longer in engagement with the pegs 4b of the code means. Then the two discs are turned clockwise until the desired numeral appears in the group apcrtttre If. The spring 6 is wound ntore tightly automatically in this process. It cannot be overwound on account of the slipping clutch 7. 7a. When the knob 3b is released the discs 3. 4 are urged axially upwardly again by the spring 6. so that in the position set the slider pegs 9c and the code means pegs 4d come back into engagement. in order to prevent the code orienting disc 3 in its depressed position from springing back in a rotary direction owing to the torque of the spring 6. a resilient check lever 10 located below the normal position ofthe disc 3 engages in the teeth 3r! on the periphery of the disc 3 and locks it in the desired direction. A resilient bell hammer 1! and its cam Hit are provided in the opcrating plane of the disc 3. As soon as the disc carries out a verifying step a tooth 31! on the dice 3 passes over the cam llu. so that the subsequent springing back of the bell hammer ll causes it to strike a bell 12 with its metal head llh and generate an acoustic signal.  
  In a particularly preferred form of the invention, and in addition to setting the apparatus to any one of 60 different groups ofqucstions. a primary adjustment to any one of 60 different series is possible. each series containing 60 groups of questions. This adjustment involves use of a code orienting means. For adjustment to a selected series the supporting disc 3 serving as a code orienting means has to be turned relative to the code disc 4 serving as a code bearing means. For this purpose the knob 3b is pressed downwardly far enough to make pegs 3:- on resilient tongues 3f strike the base 2 of the housing. The springs 3fthereby move upwardly and lift the code disc 4 far enough to bring the pegs 3n out of engagement with the ring of holes 4o. Now the two discs 3. 4 can be turned relative to one another. An indicating means formed by the row of numerals 3g on a shoulder on the knob 31) allows the user to check the relative position. For the sake of improved cnciphering these numerals are arranged in non-numerical sequence. The row of numerals 3g is checked through a series aperture 40 in the edge 4b of the code disc. This second opportunity for adjustment increases the verifying capacity to 60 X 720 43.200 individual verifications It should be noted that again for the sake of good enciphering the mutual spacing of two adjacent sliders 9 is at least equal to two rotary steps of the code means. i.e.. at least I2. In addition the spacings between two successive sliders 9 vary.  
  Since in a given type of apparatus the correct adjustment positions of the sliders 9 for each group of questions of each series are settled once and for all from the start. groups of questions can easily be adapted to the apparatus when they are being worked out. i.e.. those of the alternative answers which are correct can always be provided with the correct dotted marks. More specil&#39;ically. each lesson card containing. say. I2 questions must be provided with the group number. with the series number. with a continuous number of the I2 questions and with the correct association between the dot ted marks It and the alternative answers.  
  The possible arrangement of an end stop for the supporting disc 3 is shown at the location I4 (FIG. 2). If such a stop is provided the groups in a series an no longer be selected at will. Instead the groups of questions have to be worked through continuously from the first group onwards.  
  In an alternative form of the invention. it is possible for the apparatus to be equipped with only one setting means or slider 9. In this case the correct position of the slider could readily be determined without knowledge of the answer by experiment. i.e.. by moving the slider backwards and forwards once. As soon as the slider peg 90 entered the gap in the code means the two discs 3. 4 would carry out the verifying step. This disadvantage can be avoided by using a testing key 13. This key I3 is urged upwardly by a compression spring 13b and in this position engages in a gap in the ring of teeth 3r! by means of a lag I3. Only when the slider 9 is correctly set and the testing key I3 additionally depressed can the discs 3. 4 carry out the verifying step. It is advisable to provide two testing keys l3. at a spacing such that both hands are always required to operate them. so that it is not possible to operate the testing key 13 with one hand and the slider 9 simultaneously with the other hand.  
  Where the verifying apparatus is to be used as a party game it is an advantage to provide an additional position (herein called an unblocking position) for the sliders. in which they cannot block the relative movement between the support means and the code bearing means. For example. if the apparatus has e.g.. six slidcrs then iftherc are only four players two sliders can be made inoperative by putting them in the unblocking position. Furthermore. this additional position of the sliders makes it easy to check errors.  
  The apparatus in FIG. 3 differs from the example shown in FIGS. 1 and 2 primarily in the fact that the code orienting means takes a different form. The code bearing means 23 is in the form of: disc. It again has a central portion 230 in the form (-f a turning knob. However. the support means for the sliders 29. namely the housing cover. comprises a frame Zlu and a Code orienting means in the form of a disc Zlh which can turn relative to the frame Zlu. The group setting is read in the group aperture 211&#39; and the series setting in the series aperture 21d. In order to set a group ofquestions. the knob 23a is slightly depressed and turned clockwise until the Correct group numeral appears in the aperture Zlr&#39;. To verify the answers to group of questions the code bearing means 23 rotates relative to the support means 2hr in a similar way to the embodiment of FIGS. l and Z. In order to set the apparatus to a different series the knob is depressed far enough to make resilient tongues 23b of the code disc 23 strike the base 22 and thus bend upwardly until the code orienting disc 21h. which is thereby raised. can turn freely. The series numeral is set in the aperture Zlrl by turning the disc 2 III. In its operative position the disc 2th is held in position at its periphery by engagement between toothed rings 24 and the housing frame 21a.  
  The apparatus in FIG. 4 has a code bearing means constituted by an interchangeable code disc J4 arranged non-rotatably in a housing Jlu. It is pressed upwardly by resilient plates 32a ofthe base 32. The Ilutts ing 31a and base 32 can he hinged together as shown. A verifying disc 35 is coupled to the code disc 34 in such a way that relative rotation is impossible. The support means member for the slider 39 (the setting means) is formed by an outer circular ring 31h, A central disc 3It&#39; serves as a code orienting means and is ad justably coupled to the ring 31h at 33. A spiral spring 36 acts between the verifying disc 35 and the central disc Jlt&#39;. To set the apparatus to a given group numeral and a given series numeral the central disc 31v is de pressed against the action of the resilient tongues 32. The support means (ring 31b) and the code orienting disc 31c are then adjusted until the correct group numeral appears in the group aperture 31:! and the series numeral in the series aperture 310. The verifying steps are carried out jointly by the two coupled parts 31b and 31.  
  A second embodiment ofapparatus is shown in FIGS. 5 to 8. This has a basic construction like that in FIGS. l and 2. An important difference is that the code means consists no longer of projections but of apertures 44! in the code bearing means (disc) 44. For a system intended to indicate one correct answer out of three possibilities there is one aperture provided per radial line on the disc. this may be located on one of three concentric circles. The sliders 49 have a translucent verifying portion 49a and are movable radially. The code orient ing disc 43 is provided with one radial slot 43a per code step of the code hearing means. so that each code means aperture 44d whatever its position can always be illuminated front below by lamps 45 through one of the slots 43a. The sliders 49 are moved out of a neutral position according to the choice of answer for the questions by the user. Once all the sliders 49 are positioned a contact slider 50 has to be actuated. This interacts both with control pegs 43 h. 430 on the disc 43 and with switching contacts 460.4611. In the normal position of the contact slider 50. i.e.. with the switching contacts open. the outer peg of the appropriate group of pegs 43h lies against the side of a projection 50a on the contact slide cam in each case. as a result of a torque exerted on the discs 43. 44 by a torsion spring (not shown). When the contact slide 50 is moved against the contacts 46a. 46!: it closes the light circuit. The two discs 43. 44 simultaneously advance abruptly by half a verifying step until a corresponding peg 43c strikes against the contact slider projection 50a. The code means apertures 44d are turned to bring them under the verifying translucent portions 49a ofthe sliders 49. With the sliders 49 correctly positioned the translucent portions are now illuminated. In order to prevent the incorrectly positioned sliders (with dark translucent portions 49a) from being displaced when the light circuit is operated. the locking springs 491/ of the sliders 49 have a downwardly directed projection which is located somewhere between control pegs 43c. 43! in this position of the discs. When the contact slider is next moved back to its starting position. the two discs 43. 44 make a subsequent abrupt half verifying movement (until the radially outer peg of the next group of pegs 43h strikes against the contact slider projection 50). The sliders 49 can now be freely move again.  
  The group and series numerals are set in the same way as in the examples shown in FIGS. l and 2.  
  In FIG. 9 a further embodiment is shown. The housing comprises a cover 6| and a base 62. The code means (disc) 64 is rotatably mounted in the housing with its central portion 64a. in the form of a turning knob. projecting through the cover 61. The setting means are in the form of sliders 69. The code means consists of holes 64b in the code disc 64. Once all the sliders as are correctly positioned from their neutral position (in which the portions 69a thercofoverlap one edge of the code disc 64) the slider pegs 69h register with the holes 64b of the code alignments. The code disc 64. including the battery 70. lamp 7|. lamp contact 72 and covering cap 73. is moved upwardly by the spring 75 so that the electric contact 74 is closed and the lamp lights. The apparatus can be set to a diflerent group of questions by turning the knob until the desired group numeral on a dial arranged at the peripheral portion 64c ot&#39;the code disc 64 appears in a verifying aperture generally indicated at 6| a.  
  The apparatus shown in FIGS. 10 to 12 has the same basic construction as that shown in FIGS. 1 and 2 but is extended to accommodate the refinement ola verifying sleeve. The sleeve 82 is accommodated in a circular slot 81a in the housing. It ntay. for example. be made of a strip of paper and should have self-adhesive end portions. When the sleeve has been placed in the slot 3hr the self-adhesive ends are stuck together in a depression 81b in the housing cover 81. As the sleeve. when stuck together. has projections 8lc engaging over it at least in the vicinity of the depression 8th in the housing. it can no longer be removed without tearing.  
 The code bearing disc 83 and the code orienting disc 84 can be prevented from moving axially by means of a centrally fitted lock 85. so that only the set group of questions can be worked on and undesirable manipulations become impossible. Pointed marking members 89a pointing towards the sleeve are moulded onto the sliders 89. If someone cannot answer a question he has a chance to move the appropriate slider 89 inwardly into an additional position where the answer can be asccrtained. The slot 8Id which guides the slider 89 is uncovered enough to make it possible to read a setting instruction given in a suitable place on the edge 84a of the code disc 84. The schoolchild can t&#39;tereby position the slider 89 accordingly and will indi.cctly learn the correct answer. During the ascertainmer t ofthe answer the marking member 89a will have perforated the sleeve 82 in an appropriate place. so that the teacher will know later which questions could only be answered by moving the slide to expose the answer. It is advisable to provide the code disc 84 with elongated projections 84h so as to ensure that the slides will remain in engagement with the code disc 84 in both their neutral and verifying positions. so that no verifying step ofthe discs 83 and 84 will occur so long as a slider is still in one of the neutral and verifying positions.  
  The apparatus in FIG. 13 is very similar in concept to that described above. The sliders 99 can again be moved inwardly into an additional verifying position (where the answer can be ascertained) so that setting instructions can be read from the edge 94a of the code disc 94 through an open part 91!) of the guiding slot. If a slider 99 is moved into the verifying position. a sprung locking tab 99a which is integral with it will engage bebind a peg 94h ofthe code disc 94. A continuous circular raised portion could be provided instead of a plural ity of pegs 94b. The sliders that are thus trapped by the tabs 99a will indicate to a teacher which questions defeated the user. In order to release the sliders the discs 93. 94 have to be moved axially downwards.  
  Instead of a verifying sleeve as in FIG. It). a permanently fitted. rotatably mounted error counting ring (not shown) could be provided. It would be advanced step by step into the verifying position by a ratchet means as a result of displacements of the sliders. l&#39;he verifying ring would be provided with a row of numerals. so that the number of errors could be read through an aperture or front a mark. according to the position of the ring.  
  As shown in FIGS. l4 and IS. the code bearing means comprises two overlapping parts lOI. I02 which may. for example. be in the form of specially constructed concentrically mounted discs. After being previously axially displaced a certain distance relative to one another. these discs may be turned relative to one another by an amount equal to any number of rotary steps between adjacent rows of code means. The upper disc 102 has four radially aligned apertures 102a per radial row of code means. One of the two outer apertures l02u and one of the two inner apertures are surrounded by raiscd projections 10211. The lower disc lOI has either two outer pegs lOlu or two inner pegs per radial row of code means. When the discs are brought axially together to constitute a code bearing means carrying a code means. these pegs pass through the apertures 102a. Asa result of this arrangement. the projec tions and pegs standing proud of the upper disc constitutc code means in the same way as the pegs 4d on the disc 4 in F GS. l and 2. One ofthe positions in each radial row of code means always be left without a projection. whatever the position in which the upper disc 102 has been set relative to the lower disc I01. Thus there is always one space corresponding to a correct answer&#34; position of the slider. but the radial position of this space depends on the relative positions of the two discs I0l. I02 which constitute the code bearing means. The remainder of the apparatus is constructed and operates as described with reference to FIGS. 1 and 2.  
 is showgin Figures 14 and 15, the code bearing means comprises two overlapping parts 101, 102 which may, for example, be ::.u the form oi specially constructed concentrically mounted discs. After being previously axially displaced a certain distance relative to one another, these discs may be turned relative to one another by an amount equal to any number 01&#39; rotary steps between adJs-cent rows of code means. .The upper disc 102 has four radially aligied apertures 1025 per row of code meane. One of the two outer apertures 162a and one of the two inner apertures are surrounded by raised projections 10233. The lower disc 101 has either two outer pegs 1015 or two inner pegs per radial row of code means. when the discs are brought axially together to constitute a code bearing means carrying a code means, these pegs pass through the apertures 1025. is a result or this arrangement, the projections and page standing proud of the upper disc constitute code means in the same way as the pegs 4;; on  
 the disc 4 in ligures l and 2. One of the positions in each radial row oi code leene always be left without a projection, whatever the position in which the upper disc 102 has been set relative to the lower disc 101.  
 Thus there is always one space corresponding to a &#34;correct answer&#34; position of the slider, but the radial position ot this space depends on the relative positions ot the two discs 101, 102 which constitute the code bearing means. The reminder of the apparatus is constructed and operates as described 11th reference to Figures 1 and 2 Another procedure say of achieving an adjustahle arrangement of the code scans on the code bearing means is tor tvo outer apertures and two inner apertures 102; alms&#39; to be regarded as pairs, of which one pair er mm row is um with a projection 1023;. In this case the a. page 101; of the lower disc per mm row east be located either at the outside or at the inside. The sane system can he used if the code means is designed for a different number of settings, that is to say, more than one correct answer from a number oi possibilities. with a three-position code means, for example, no peg will be associated with the inner aperture of the upper disc, while one or other of the outer pair of apertures will have a peg. The lower disc must accordingly be provided either with two outer projections or with two inner projections per row, so that one of the possible settings per unit will always be left without a projection and correspond to a correct answer. The  
 projections may or course be constructed differently and may, for  
 example, be round.  
 The code bearing means in Figures 16 and 17 comprises a lower disc 111 and an upper disc 112 which covers and is mounted coaxially with the disc 111. The discs can be turned relative to one another a distance to any number of longitudinal units of code alignment.  
 The code means is formed solely by apertures some of which (111 are formed in the lower disc 111 and some of which (1125) are formed in the upper disc 112. The illustrated code means has four possible radial positions for an aperture, only one or which positions is occupied by an aperture formed by the overlapping of an aperture in one disc 111 with an aperture in the other disc 112. One disc 112 accordingly has one inner or one outer double aperture 1125 per radial row oi code means. Each double aperture 1125; could be divided into two single apertures, as a modification. In the other disc 111, on the other hand, two apertures 111; are termed per radial row, one oi which apertures is located in the circular region of the outer apertures 112a and the other in the circular reach of the inner apertures 112% in the disc 112. This arrangement ensures that in any rotary position oi the disc 111 relative to the disc 112 the apertures at any radial position will regster (overlap) only in the region oi one oi the four possible settings. By turning the two discs 111, 112 relative to one another the resulting pettern of code means can be repeatedly continually changed at will. The same effect can be achieved if the code means is designed for a diiterent number of possible settings. In a code means with three possible settings, one disc my have an outer one part or two part double aperture or an inner single aperture per redial row position,  
 while the other diso is alweys provided with one inner aperture which is always on the same line and with one outer aperture which varies within the conpass of the double aperture, per code redial row position. In a code means with six apertures, the apertures for sample in the upper disc are simply made longer. It is unnecessary to explein how the code mesns described can interact in my different ways with setting means, e.g. sliders or translucent areas through which a light can be viewed.  
 The parts lll, 112 of the code bearing means in particular may be in the tom of superimposed bands mounted on rollers in the manner described with reference to rigures 20 and 22 to be described later.  
 In the embodiment shown in Figures 1a and 19 a page dispenser B is below the answer-verifying apparatus A, which is only represented diagmmatioally but which corresponds to the construction described with reference to Figures 1 and 2. In a page cavity 120 there are a number of pages 121 printed with questions. A drawing plate 122 serves to transport the pages 121 through I. delivery slot 123. A resilient tongue l22 e presses on whichever page is uppemoet.  
 The plate 122 is locked by a pivot amber 124 which is mounted for rotation about the spindle 1243 and eoted on by a tension spring 128.  
 In the normal position the pivot member 124 is subject to a torque acting in the direction of the arrow. The lower web 124g passes thrcuh a slot 1223 in the plate 122 and lies in a lateral extension oi the said slot for looking purposes. The plate is thus looked. in epgn as the supporting disc 125 of the apparatus A carries out a. verifying step as e result of the correct setting 01. all the sliders 129, the lever 126 is actuated with the aid or thn teething 125g and e can 1260.7. .The can tipe the pivot member 124 so that the plate 122 is released end the top page can be transported with it. As soon on the plate 122, and with it the top page, have been drawn forward a sho:  
 distance, e rear clamp 127 deloende end secures the other pages. when the plate in pushed back the pivot member 124 in automatically returned to it! looking position owing to the shape of the guiding slot 1223 In the Figure 20 apparatus the code bearing means 150 is in tho tom of a band and runs over two rollers 131 and 152. &#39;J&#39;oothing (not visible) is provided only between the roller 132 and the band 150.  
 A plurality of adjacent code means are provided on the band 130, formed by lateral rows of pegs 130%. These interact with sliders 159 mounted in the housing cover 135. The sliders 139 are generally similar to the sliders shown in Figures 1 to 4. The sliders 139 are also partly Y as (although this cannot be seen from the Figure) so um the interact with a row of code means have a mutual spacing of at least two intervals between adjacent rows of code means. In  
 order to set the apparatus to a group or questions, the cover 135 has to he opened. when it is open it releases a locking s ring 154 by means oi an integral arm 135g. The spring s in looking teeth 1322; O! the roller 152 and looks it against the action of a transporting spring (not shown). A row of numerals for verification and/or for setting the group of questions may be provided on the band 130. These numerals are exposed at a time through an a erture in the housing (for the sake of simplicity neither the numerals nor the aperture has been shown). Below the answer-verifying apparatus C there is. min a page dispenser D with a page cavity 138. The pages are shown at 135 and are pressed upwardly against the rollersljl, 152  
 by springs 136. Liter correct setting of all the sliders 139 an answer-verifying step the length of the spacing between adjacent rows or code means is carried out by the band 150 (the rollers 151, 152 also rotating) in the direction or the arrow. Ihe top page is consequently moved towards the slot 137 tar enough tor it to be freed from the roller 152 is the roller is now blocked it retains all the other pages, whil:  
 the released pageis moved through the delivery slot 157 by means of the roller 131. I  
 The ccdeJneane may obviously be formed by apertures, illuminated in uae, even when the code bearing means is in band form. Furthermore,  
 the additional refinement oi a code orienting means which has been described with reference to the embodimemte of Figuree l to 8 and 10 to 15 which include diece can readily be traneterred to construction:  
 involving e code bearing meane 130 in band tom for the purpose of edditionsl eeriee ct queetione. The code means and the code orienting meme would thue compriee two relatively dieplaoecble bands,  
 end the indication device for the series setting must be associated with the two bende, while the indicetion device for the group setting must be neooieted pertly with one of the bench and partly with the housing.  
 In the Figure 2]. example a further apparatus F is coupled to the answer-verifying apparatus E, which may, for example, correspond to that in Figures 1 and 2. The apparatus F contains-an interchangeable cassette 140 equipped with a film 141. One 01 the two film bobbins 142,143 is toothed and engages in a member 144 of the apparatus E,  
 which member 144 is also toothed and which makes the answer-verifying switching steps. The projecting device comprises a bulb 145 and 8.  
 lens 146. If the apparatus is operating a transparency of the film 141 is prodeoted. The transparency contains questions. when these have been correctly answered and the sliders of the verifying ap aratus E are correctly positioned, the apparatus carries-out a verifying step,  
 whereby the next transparency is brought in front 01 the lens.  
 In the Hgure 22 apparatus, transparencies are mounted on a band 150 which, like the code bearing band 151 parallel thereto, moves around the two rollers 15;, 15 Teething (not shown) is provided between the two bands 150, 151 and at least one of the rollers 15}, 154.  
 The projector device comprises the lamp 155 and the lens 156. The  
 sliders are shown at 159. The remaining features and the manner of operation corresponds generally to Figure 20.  
 In Figure 23 an interchangeable disc 160 acts as the transparency support. It is nounted perpendicularly to the veriiying apparatus G so as to rotate on a peg 161 of a supporting am 162 placed on the apparatus 0. The apparatus G may correspond to that described with reference to Figures 1 and 2. A tccthed peripheral portion of the disc:  
 .160 engages in s toothed ring of a disc 163 of the apparatus G (which di&#39;sc performs the answer-verifying steps) so that the disc 16} drives the disc 160. The projector device comprises a lamp 164 and a lens 165. One of the transparencies mounted in the disc 160 is shown at 16L In the emples given in Figures 21. and 23 the apparatuses may -be desigied so that on the elements which are. required when {sin transparencies can be added to the veriiyingapparatus G at a later stage.  
 It the game is to be played by several players at a party it is advisable for the pages of questions to be about the size 01 playing cards. It is further proposed that the playing cards should have several different markings, preferably at the back, whereby successive question cards at numerical intervals or one, two, three, etc. can be indicated in the same way; for sample, cards with questions 1-3-5- .v  
 may-have a red 2 and cards with questions 2-4-6- n... a blue 2, cards with questions 1-4 -7- may have a red 5, those with questions ,2-5&#39;6- eseee 3 ad cm. With quelticns &#34;so- 8. 5:663 5 etc.; thus the cards may be dealt out quickly and safely, whatever the numbor of pleycrs, in ooh a. way that the questions always have to be answered by on&#39;fiplayor after another. The colours may be allotted before the by throwing dice. Chips (possibly with different values) my alto be used (with prizes for correct answers and fines for incorrect ones).  
 Apparatus for playing an educational game comprising:  
 a cover;  
 at least one setting means operable from outside the cover to be moved into at leaet two answer positions, each such answer position being representative of one of several possible answers to a given question and each such setting means including a portion thereof that is capable of transmitting radiant energy;  
 support means carrying the setting means and constructed to allow the setting m1 to move into said positions relative to the support means;  
 oode bearing means supported by and at least partly concealed by the cover and movable relative to the support means;  
 a plurality oi apertures in and defined by the code bearing means, said apertures being arranged in a pattern to constitute a plurality oi code means carried by the code bearing means;  
 the setting means being movable between positions where its snug-transmitting portion is respectively aligned and not aligned with an aperture of each said oode means at any specific position 01 the code bearing means relative to the support means;  
 means permitting radiant energy to fall on the underside of the code bearing means to pass and to be intercepted according to whether the said energ-trsnmitting portion or the setting means is aligned or not with an apertureeci&#39; the code means,  
 passage of said radiant energy than corresponding to positioning of the setting means in an answer-correct position and interce tion to an answer-incorrect position of the setting means and indicating means tor indicating the position of the code bearin means relative to the support. means.