I have written before on how I always wanted to study physics. But I ended up with commerce and accountancy. I cannot read even one book on accountancy but I keep reading books on physics. Or any science book with simple English. It makes me jump with joy to see simple mechanisms work and the ingenuity of the manufacturers. I specially love mechanics. One of the first thing I remember dismantling was my mom’s powder case. You have to wind the thing from bottom and it would produce the most beautiful tune from inside. I opened it to get to the mechanism. It has no battery and the sound so beautiful. The simplicity of mechanism had me enthralled for hours. It was basically a rotating drum with pins on it. The drum is connected to a metal comb which gets picked at when a pin of the drum passes through it. I don’t know if this makes sense to you but this diagram should help. It is truly beautiful. I might have been in fourth standard at the time.
I also loved the little carpentry that I could do around the house along with dad. Primarily consisting of banging nails and screws in the house.
Oh the choices we make and where we end up instead. Not that I regret it. I guess I might have gone crazy after taking engineering as well. I might have ended up as a engineer MBA as opposed to a commerce MBA. No great difference. In fact I might have been worse off and would have been confused seeing balance sheets. For what I am doing, I am better off.
One of the other wonders was always how on earth does a sewing machine work? While you do it with one needle and a thread with the hand, in a machine you require two threads, one from top and the other from bottom. As a kid I remember pestering mom, as to why you require two threads. I don’t think mom had too much of a scientific answer to give me. Or too much of any answer to a scientific question. I always wondered. When I saw my wife with the machine I would sit and stare, all fascinated. How does the bottom thread get through the cloth on top? Is there a needle at the bottom also? Why do you require two? How does the thread pierce through and get through the bottom to come back on top? Dam it.
While I could easily break and destroy the old powder music box, I would dare not attempt to open the sewing machine. Not as a child and definitely not even after I bought it for my wife. No way. Jasmine too had no clue how this worked.
The mystery got resolved thanks to a link my wife sent me. Here is the magical mechanism. Explained. I can stare at this gif forever as well. My god. I love the mechanism. The sheer simplicity of it fills my heart with joy. Everything beautiful must be simple. I am really feeling so nice just looking at it.
On the link there is also the Constant Velocity Joint and the “Maltese Cross mechanism, which turns smooth circular motion into segmented second-hand motion for clocks”.
Constant-velocity joints (aka homokinetic or CV joints) allow a rotating shaft to transmit power through a variable angle, at constant rotational speed, without an appreciable increase in friction or play. They are mainly used in front wheel drive and all wheel drive cars. Rear wheel drive cars with independent rear suspension typically use CV joints at the ends of the rear axle halfshafts, and increasingly use them on the propshafts.
It seems they replaced the Universal Joints in some places. The universal joints were simple but could get notchy and needed regular maintenance. It so looks like something that belonged to my dad's premier padmini car.
Pretty cool nah? I remember unlike others I could spend hours at a science exhibition or be at ease in an industrial museum. Like normal museums, even industrial museums must have an audio guide that should explain the beautiful mechanism to lay people. If you have an interesting guide then kids would love going to see things move and engines start. “NOW what would happen if I move this lever?” crank crank sputter sputter.. “Voila the ball has turned onto the opposite side, clever nah!” clap clap clap. And now we proceed onto the cantilever double axle shaft… (don’t look it up – I made that name up from all the mechanical words that sprang to mind).
But just imagine the possibilities of museums. We spend on making them and not on explaining them.
Like this blogger who went to a maritime museum and shot this. I loved the photo she clicked. Only if she knew what it did or I knew what it did and why it is in a museum?
