74, 75 and 76, one end of the wall 73 being curved to meet one end of the wall 75, leaving a passageway 77 between it and one end of the wall 74. One end of the wall 76 is similarly curved to meet one end of the wall 74, leaving a passageway 78 between it and the other end of the wall 75. There are thus formed parallel runways 79, 80 and 81, with passageways from one to the other, whereby a ball deposited at the other end of the runway 79 will move continuously from that end of the series of runways to the other end. The runway 79 is provided with an end wall 82, and adjacent thereto the longitudinal wall 76 is provided with an opening 76ª to permit the passage therethrough, at intervals, of balls from the power-transmission wheel 24 to the runway 79. Adjacent the wall 82 is perpendicularly disposed pin 82ª whereby the balls, as they pass through the opening in the wall 76 are deflected to pass through the runway 79 in the direction of the arrow. At the lower end of the runway 81 is provided a laterally movable receptacle 83, which has a receiving capacity for one ball only. Said receptacle comprises a base 84 and end stop 85. Said receptacle is horizontally hinged at 86 to the floor member 72 of the runway 81, and is provided with an outward extension 87, which is adapted to be engaged by a shoulder 88 on the ball pockets 22, and thereby depress the outer edge of the base of the receptacle in such a way as to eject the ball therefrom, and place the same in the pocket of the wheel 19. It will be seen that the hinge 86 (Fig. 19) is off center and when the base 84 of the receptacle 83 is depressed at the rear the upper end of a pin 89, projecting upwardly from the base 84 contacts with the upper portion of the wall 74, thereby preventing the rear portion of the base being depressed too low. When a ball is in said receptacle, the forward end will be elevated so that a portion of the side edge of the base will be projected above the floor member of the runway 81, serving as a stop to prevent more than one ball occupying any of the space within said receptacle. When one ball moves into a pocket 22, another ball quickly moves into the receptacle, taking its position at the rear thereof. This operation takes place when the base 84 is level with the floor member of the runway 81, the outer end of the base rising as soon as the pocket and its ball have passed by the projection 87.