Abstract: A ball bearing actuation mechanism includes a circular gauge wheel rotatably mounted in an interior chamber of a housing below an inlet passage and adjacent to outlet and overflow discharge openings of the housing and a curved retainer wall mounted to the housing in the interior chamber adjacent to a peripheral groove on the gauge wheel so as to form a channel therebetween which extends between the inlet passage and discharge outlet opening of the housing. The peripheral groove has a length preset to receive a preset number of ball bearings in single file fashion therein when the ball bearings are deposited into interior chamber via the inlet passage such that any ball bearings above the preset number deposited into the inlet passage of the housing will divert to the overflow discharge outlet of the housing.

Abstract: The game for teaching binary mathematics includes a plurality of balls, a backboard, and a plurality of elongate members selectively connected to each other and to the backboard in non-horizontal directions. A plurality of gate sections are pivotally connected to the backboard and engageable with select ones of the plurality of members so that the gate sections can be pivoted between open and closed positions respectively. Select ones of the plurality of balls may cause corresponding ones of the plurality of gate sections to pivot between open and closed positions after passing thereby. Corresponding 0 and 1 binary values are assigned to closed and open ones of the plurality of gate sections, respectively, so that a number of the plurality of marbles that have been introduced to the game can be determined by adding the corresponding 0 and 1 binary values.

Abstract: A mathematics teaching system for visually and physically teaching a student how to perform multiplication and division calculations in a simple to understand format. The mathematics teaching system includes a housing having a plurality of apertures aligned in vertical and horizontal rows, an upper opening within the housing for inserting tokens into, a lower opening for allowing tokens to escape, a vertical slot and a horizontal slot within the housing for receiving slider members, a plurality of vertical reference numerals and a plurality of horizontal reference numerals, and a stopper member slidably positioned within a lower portion of the housing for retaining the tokens in a desired location for allowing calculation by a student.

Abstract: A score counter includes a bar having two spheres on two ends thereof so as to fix the bar by engaging the two spheres with relative members. A plurality of retaining members each have a score marked therein and extend from an outside of the bar. A plurality of blocks are slidably mounted to the bar and each block is separated by the retaining members on the bar. The hole is sized that the user can move the block over the retaining members by force. The blocks on the bar are separated by the retaining members.

Abstract: A lottery ticket includes an upper edge, a lower edge, opposite side edges, and a first area located adjacent the upper edge, the first area having a first set of gaming indicia disposed thereon that form lower portions of prize symbols. A second area is located adjacent the lower edge, the second area having a second set of gaming indicia disposed thereon that form upper portions of prize symbols. The arrangement is such that upon folding the ticket about a horizontal axis and aligning the second set of gaming indicia above the first set of gaming indicia, the winning status of the lottery ticket is determined if the upper portions of prize symbols register with the lower portions of prize symbols to create at least one complete prize symbol. Other lottery ticket constructions are further contemplated. A method of playing a lottery game is further disclosed.

Abstract: A teaching device comprising a group of balls, a first counter, a second counter and a tray interconnecting the first counter to the second. The first counter represents the problem to be solved, and the second counter indicates the solution to the problem. Both counters include several parallel columns for holding several of the balls in a line, and a stop for at least one of the columns to limit the number of balls that can be held by that column. The tray is placed below the first counter so that balls placed in the first counter may be dumped into the tray by removing the stops from the columns of the first counter, and then pushed or allowed to fall from the tray into the second counter.

Abstract: A dart score board has tokens moveable along tracks, each track corresponding to a region of a dart board. The score board also has point-score-keeping elements, such as sets of thumbwheels. Players record the progress (status) of a dart game by moving the tokens along the tracks and by advancing the point-score-keeping elements.

Abstract: A didactic game wherein a number of balls are allowed to roll by gravity along a guide channel on a play plate. The guide channel has bifurcations controlled by switch means provided with manual control members for selecting the trajectory of each ball and direct the same towards a specific nest of a plurality of nests arranged at the outlet of the ramifications of the guide channel. All switch means of the same order are connected to a single collective control member. The two positions of each control means are designed by the digits 0 and 1, which, read from the top towards the bottom, indicate in binary numeration the progressive number of the nest made reachable by the ball. This progressive number is marked in decimal numeration in the nests. The game may be used, in addition to play purposes, also for explicating and fix in the memory the practice of translating numbers from one to the other system of numeration.

Abstract: An apparatus and method are disclosed for counting the number of calls made by a user during a counting period. The apparatus includes a telephone having a curved handset which is displaceable approximately 90.degree. from a rest position to a use position. Attached to the telephone handset at a slight angle from horizontal is a relatively flat counter. The counter uses a series of zigzag tracks and a ball movable in the tracks to count the number of calls made by the user. In the method of the present invention, a call made by the user is counted by tilting the handset slightly to one side as the handset is raised to make the call and tilting the handset slightly to the same side as the handset is lowered after completing a call. In this manner, the ball in the counter is advanced along the zigzag track.

Abstract: A mechanical apparatus for adding or subtracting binary numbers, in a visual manner, comprises a front plate with first and second rows of ball receiving apertures formed near the plate top. Balls are introduced into these apertures in a manner representing binary ones of the numbers to be added. Near the bottom of the front plate is formed a third row of apertures. A back plate having front plate guides is provided against which the front plate is held. Three rows of recesses formed in the front plate contacting face of the back plate and two additional rows of front plate apertures cooperate, when the plates are held nearly vertically and the front plate is slid upwardly along the back plate, to cause movement of balls from the first two rows of front plate apertures, through the recesses and other apertures and without other moving elements or switches and into the third row of front plate apertures in a manner to indicate in the third row the binary sum of the two binary numbers being added.