It will be seen that the energy-storing wheel 19, which takes its motive power through the shaft 18 from the expansion coils, acts to raise the balls or weights from the lower ball runways 51 to the ball storage runways 50. The wheel 19 may act at more or less irregular intervals, while the power transmission wheel 24 acts--and must act--continuously and regularly. This wheel takes and transmits power from the lowering of the balls, which are delivered to it when the pockets are in the position of the one shown uppermost in Fig. 15, and are discharged from the pockets when in the position of the one shown lowermost in said figure, in which position of the wheel the approximately flat surface of the pocket (Fig. 18) is lowermost, or under the ball, permitting ready discharge of same. From the delivery side of the power transmission wheel 24 the balls are discharged into the runway 79, being deflected into proper direction by the pin 83ª, thence passing through the passageway 78 through the runway 80 in the direction of the arrow, thence through the opening 77 into the runway 81, thence into receptacle 83, and when the shoulder 88 of the energy-storing wheel 19 reaches a point opposite said receptacle the base of the latter is depressed, which results in passing a ball into the wheel pocket; as the wheel turns and the next pocket arrives in position another ball is taken on, and so on, as long as there are any balls in the lower runway. When a ball on the wheel 19 reaches the uppermost position, as shown in Fig. 16, it contacts with the ejector 63ª and is thereby passed into the runway 61 and thence to the lower end of that series of runways, and in the same way the balls following will take position in the upper series of runways. It will be understood that when my invention is applied to the operation of a clock the power taken from the power transmission wheel 24 will be given up gradually, being controlled by the pendulum or balance wheel governed escapement in the usual way. In the application of my invention as last above described the apparatus will be designed and built to furnish energy sufficient not only to run the clock, but provide a surplus for storage. On some days the variation in temperature may be but two or three degrees, and on [Illustration: _Fig. 12ª._ BANGERTER’S PERPETUAL TIME CLOCK]