Well, sewing machines actually. A nice little overview of their history, from Pathe in 1934:
https://youtu.be/z8iRmYlpKHE?feature=shared
Thank you!
I own a 1934 Singer 15k that still works flawlessly. Find out why here:
https://www.youtube.com/watch?v=bIMxwy8CLkw
Cheers, Hendrick