Thank you for the welcome,
My grandfather started at the shop when he was about 16, so all hand spinning of course. Scissor tools came in time and in about mid 60's ( my Grandfather had bought the company by then) one of the spinners took a power steering pump out of an old Buick and assembled power assist spinning, where before the handles on the scissor tools being about six feet long, (for heavy material) my Dad on one my uncle on the other, now with the power assist tools it only took one spinner to do the work. When my Grandpa retired they rebuilt a 22 inch Grabo and sent him home with all the hand tools , patterns etc he wanted and he spent the next 10 years doing small jobs for various people. I inherited his lathe patterns and tools, though I still am a cabinet maker full time.
Michael