Sewing machines revisited;
A friend of mine, from time to time, is bringing me machines, older vintage singers. I pulled one out I hadn't looked at since she brought it to me about 3 months ago. It didn't have a motor, or wires and no lamp. The mounting bolt was on the machine. I wouldn't say it was abused, no rust or buildup of crud. It's smooth running and has been consistently maintained. I took a modern, made in China, hand crank off a post WII Japanese copy of the Singer 15 and put it on the machine to see how it runs.
It's a 128, which is a 3/4 size vibrating shuttle machine, it was built in 1919. The modern hook and loop is a rotary design, honestly I can't see it's advantage. It may have something to do with various stitching patterns or the reverse stitch function, I don't know but I really like the vibrating shuttle on these old singers.
There is not a machine ever made that makes a better looking straight stitch.