In case you were wondering......I did....

Here's some animated gifs on how a few mechanical principles work. I knew about the naval guns (being an amateur naval historian and a fourth generation sailor)but find the principles amazing nonetheless, but the sewing machine I always wondered and just hadn't had the time to take it apart, and the second hand on the clock I was wondering about the other day as I watched a clock but just hadn't had time to get to it either.....

Naval guns - the yellow is the powder and the green is the salvo, or warhead

sewing machine

Malta cross movement - function on the second hand on a clock