Abstract: A target throw playing machine includes a main frame, and a throw portion. The throw portion includes a front plate, a plurality of targets, and a plurality of shafts. Each of the targets has a bottom provided with a movable block formed with a cutout and a chamfered portion. Each of the shafts is provided with a plurality of push members each having a first end selectively rested on the chamfered portion of the respective movable block or locked in the cutout of the respective movable block. Thus, the target throw playing machine has an automatically restoring function and has a rotation positioning function.

Abstract: A reciprocal device for exercise machines includes a base having a plurality of positioning rods and stop members on a top surface thereof and each positioning rod has a spring mounted thereto. A movable member has a plurality of sockets which are mounted to the springs and the positioning rods. A cover is mounted to the movable member. The base and the movable member each have a sensing rod and the two sensing rods are located in alignment with each other so that when the movable member is stepped downward, the two sensing rods contact and send a signal to allow the exercise machine to process a function.