Abstract:
There is provided a domino toppling toy which includes a movable member capable of moving toward and away with respect to the first domino piece in the domino train. The movement can be held at the position away from the first domino in a normal position and can push the first domino piece as operated to apply a toppling force thereto.

Description:
BACKGROUND OF THE INVENTION 
     The present invention relates generally to a domino toppling toy for making a domino toppling play more interesting and more attractive. More particularly, the invention relates to a domino toppling toy which mechanically causes to topple a first domino piece in a plurality of domino pieces arranged one after another in alignment. 
     A domino toppling game is one of the most popular amusements. In order to make a domino toppling game more interesting or attractive, there have been developed various appliances for use in a domino toppling game. A novel appliance has long been desired which is used for causing a first domino piece in a plurality of domino pieces arranged one after another in alignment to mechanically topple down. In other words, toppling the first domino piece is effected by indirect mechanical motion instead of causing the first domino piece to topple directly in man&#39;s hand. 
     SUMMARY OF THE INVENTION 
     Therefore, it is an object of the present invention to provide a domino toppling toy which can add more fun or interest in playing a domino toppling game. 
     Another and more specific object of the present invention is to provide a domino toppling toy capable of causing a first domino piece in a plurality of domino pieces arranged one after another in alignment to mechanically topple down. 
     To accomplish the above-mentioned and other objects of the present invention, there is provided a domino toppling toy for imparting a toppling force to a first domino piece of a domino train which comprises a movable member and an operation means. The movable member is located adjacent the first domino piece and adapted to move toward and away with respect to the first domino piece. The operation means is provided for operating the movable member to move toward and away with respect to the first domino piece in manual operation, and includes an energizing means for biasing the movable member at an initial position at which the movable member is away from the first domino piece. 
     The present invention will be understood more fully from the detailed description given hereinbelow and from the accompanying drawings of the preferred embodiment of the invention which, however, should not be understood as limitative to the invention but for elucidation and explanation only. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     In the drawings: 
     FIG. 1 is a perspective view of the preferred embodiment of a domino toppling toy in accordance with the present invention, which is shown in an arrangement actually used for toppling the first domino piece in a domino train; and 
     FIG. 2 is a side elevational cross section of the preferred embodiment of the domino toppling toy of FIG. 1. 
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT 
     Referring now to the drawings, particularly to FIG. 1, there is illustrated a preferred embodiment of the domino toppling toy according to the present invention. The domino toppling toy is used by placing it adjacent a first domino piece 9a in a domino train 9. The domino toppling toy has a movable member 6 which comprises a hand-shaped head 6a and major section 6b. The major section 6b is substantially L-shaped configuration in section having a vertical part 6c and a horizontal part 6d. The horizontal part 6d is slidably placed in the internal space of a hollow rectangular housing 2. The housing 2 is formed with an elongated rectangular opening 7 on the ceiling thereof. The vertical part 6c of the major section 6b of the movable member 6 extends outwardly through the rectangular opening 7. The dimension of the rectangular opening 7 is so formed as to permit a longitudinal movement of the movable member 6 relative to the first domino piece 9a in the domino train 9. 
     As shown in FIG. 2, the movable member 6 is engaged with one end of a tension spring 8 at the end of the horizontal part 6d away from the vertical part 6c. The other end of the spring 8 is fixedly connected to the housing 2. The housing 2 is further formed with a circular opening 3 on the ceiling thereof at a spaced distance from the rectangular opening 7. A operation member 1 which comprises a manually operable head 1a and a driving section 1b having a tapered edge portion 5a at the lower end thereof. The horizontal part 6d of the movable member 6 also has a tapered edge 5b at the end away from the vertical part 6c. The tapered edge 5b of the horizontal part 6d of the movable member 6 engages with the tapered edge of the dividing section 1b of the operation member 1 with a tension force of the tension spring 8 applied therebetween. 
     In the normal position, the movable member 6 is biased by the tension spring 8 to locate the hand-shaped head 6a away from the first domino piece 9a of the domino train 9. At this initial position, the manually operable head 1a of the operation member 1 is depressed to urge the movable member 6 toward the first domino piece 9a against the tension force of the tension spring 8, so that the tapered edge 5a of the driving section 1b pushes the confronting tapered edge 5b of the horizontal part 6d. As a result, the hand-shaped head 6a of the movable member 6 comes in contact with the first domino piece 9a of the domino train 9, thereby toppling down the first domino piece 9a and hence sequentially the other domino pieces in the domino train 9 one by one. 
     After carrying out toppling of the first domino piece, the operation member 1 may be released from depressing to allow an upward movement to restore its original position. The tension spring 8, in turn, operates to move the movable member 6 to the initial position. Thus, the hand-shaped head 6a returns to the initial position. 
     In a modified embodiment of the domino toppling toy according to the invention, it may be possible to employ a coil spring around the operation member 1 to ensure a smooth return to its normal position. Furthermore, it is obvious to those artisan to replace the tension spring 9 used in the foregoing embodiment by a compression spring. In addition, the operation member 1 can be actuated not by a manual force but by another last domino piece of another domino train, the last domino piece falling down onto the operable head 1a of the operation member 1. 
     While the present invention has been illustrated in detail with respect to the preferred embodiment of the invention for better understanding, it is to be distinctly understood that the present invention is not limited thereto but may be otherwise variously embodied without departing from the scope of the following claims.