Abstract: A game machine according to the present invention includes claws for holding a thing. The machine also includes an acquisition detector, a closing pivotal angle controller, a continuous play controller and a playable game computer. If a player has acquired nothing from the game machine in the last game, and the detector outputs an acquisition failure signal, the angle controller increases the closing pivotal angle of the claws. If the player has acquired a thing from the machine in the last game, and the detector outputs an acquisition success signal, the angle controller decreases the pivotal angle. If the play controller outputs a continuous play signal, the game computer increases the number of playable games.

Abstract: A game machine according to the present invention includes claws for holding a thing. The machine also includes an acquisition detecting means, a closing pivotal angle controlling means, a continuous play controlling means and a playable game computing means. If a player has acquired nothing from the game machine in the last game, and the detecting means outputs an acquisition failure signal, the angle controlling means increases the closing pivotal angle of the claws. If the player has acquired a thing from the machine in the last game, and the detecting means outputs an acquisition success signal, the angle controlling means decreases the pivotal angle. If the play controlling means outputs a continuous play signal, the game computing means increases the number of playable games.

Abstract: An object holding device has a base plate, first and second claws, base ends of which are pivoted at the first and second pivotal points on the base plate, respectively, free ends of which hold an object detachably, a driving device, first and second driven members to be rotated around the first and second pivotal points, respectively, by a driving device, and first and second spiral springs wound around the first and second pivotal points, respectively, for connecting the first and second driven members with the first and second claws, respectively, in order to urge the claws in a closed position. An angular position of the claw is detected, and an original position is set when the claws are opened fully. The object is held by a holding force according to the difference between the rotary angles of the driven member and the claw.