The 30 second version, sewing is very labor intensive and people started trying to make a sewing machine from about when manufacturing tolerances got tight enough to attempt the process. It still took about 100 years until machines that actually work well were invented, The genius bit that took so long is to not try and sew like a human does but to develop an inverted process that a machine can do. Honestly, despite being quite common at this point in time sewing machines still blow my mind when you consider the intricate process they are required to do with thread.
And a fun fact for free: Apparently patent cartels(cough MPEG LA) are not a new thing and Singer et al set one up in the 1850's to lock up the market on these marvelous machines.