12 times more output than input, dual mechanical oscillation system !

[neptune]

@Cleanfuture. Does your ratchet flywheel extract energy from both the up and down movements of the beam? I was looking at a replication that drives the pendulum by an electromagnet. the beam drives a crude generator. Claimed figures are 2.4 watts in and 3.5 Watts out. I think a bicycle hub type generator would give a bigger output for less drag. 50 years ago when I was at school. the school had a master/slave clock system. The master clock had a long pendulum. This was pulsed by an electromagnet about once per minute. A simple elegant mechanical device detected the reduction of amplitude of the pendulum, and it was this that switched on the electromagnet. I understood how it worked, and can still picture it in my mind. I would post diagrams, but I do not have the ability. If anyone is interested I will try to describe it. It would drive a pendulum to the same average amplitude in spite of variable damping.

[gyulasun]

Hi Neptune,

It would drive a pendulum to the same average amplitude in spite of variable damping.

but the question is: at what input energy with respect to any useful damping?  (on damping we mean useful load, right?)

thanks,  Gyula

[edelind]

@Cleanfuture. Does your ratchet flywheel extract energy from both the up and down movements of the beam? I was looking at a replication that drives the pendulum by an electromagnet. the beam drives a crude generator. Claimed figures are 2.4 watts in and 3.5 Watts out. I think a bicycle hub type generator would give a bigger output for less drag. 50 years ago when I was at school. the school had a master/slave clock system. The master clock had a long pendulum. This was pulsed by an electromagnet about once per minute. A simple elegant mechanical device detected the reduction of amplitude of the pendulum, and it was this that switched on the electromagnet. I understood how it worked, and can still picture it in my mind. I would post diagrams, but I do not have the ability. If anyone is interested I will try to describe it. It would drive a pendulum to the same average amplitude in spite of variable damping.

Please describe it! Many thanks.

[neptune]

@edelind.Imagine a simple pendulum. Now imagine a hinge about one quarter down from the top.  attached to this a hinge is a horizontal bar , in the same plane as the pendulum swing. At the far end of this bar is a another hinge from which hangs a short vertical bar, say 2 cms long. This second hinge is arranged to allow the short vertical bar to swing only 45 degrees either side of the vertical. As the main pendulum swings. this vertical bar wipes back and forth along a fixed horizontal plate. The length of this plate is such that , at each end, the vertical bar drops over the end of the plate, and thus on its return journey swing the opposite way on its hinge,so that it always trails behind its hinge. Near one end of the horizontal plate, is a groove, parallel to the axis on which the main pendulum swings. Normally the vertical bar passes over this groove. But as the pendulums swing decays, a stroke will occur when the vertical bar, instead of dropping over the end of the plate, will stop with its lower edge in the groove. when the pendulum changes direction, the vertical bar will move on its hinge, forcing the horizontal bar from which it hangs, to rise higher than normal. As it rises, it briefly closes apair of contacts to energise the drive magnet .If anyone understands this, maybe they could post a diagram, as this is beyond my skills.

[neptune]

My last post, describing this mechanism was not quite right. I only saw it 50 years ago in the headmasters study. The only time you got to see it was when bending over to receive corporal punishment, so my mind was perhaps on other things. Further research has shown that this device is called the HIPP TOGGLE.
   Enter this on Youtube and see the video by RODALCO2007 . This shows it perfectly. Also notice the design of the electromagnet that drives the pendulum. Very efficient because the air gap is consistently small. I guess a picture really is worth a thousand words. Hope this helps someone.