marksbug (Oct 13, 2020)
Well, not in that era, but close.
By the mid-60's, a process named "clinching" had been developed. Clinching joins sheet metal by drawing and forming the part materials into an interlock...eliminating welding and fasteners...no sparks, fumes or heat.
https://btmcomp.com/clinching
Sincerely,
Toolmaker51
...we'll learn more by wandering than searching...
Jon (Oct 14, 2020)
Workers baking bread at the Colonial Bread Factory. Springfield, Missouri. 1950.
Fullsize image: https://diqn32j8nouaz.cloudfront.net...s_fullsize.jpg
New plans added on 12/16/2024: Click here for 2,633 plans for homemade tools.
Thanks for showing that side John. The 1970's - 1990's Was one of those government change periods that affected farming wall to wall. The government pushed "go big or go away" programs. It was also a period when the government was filled with lawyer, banker, and accountant types, who had never lived, or worked on a farm, who attempted to change farming into an industrial manufacturing business. They did not and DO NOT to this day, understand that farming is different. I had a bull struck by lightning last Christmas time. There is NO government program, or federal procedure for planning a lightning strike into your farm operation. And more specifically it was a bull that was struct not a cow. That of course changes the problem for the farmer in a way someone who never lived on a farm could figure out the difference this problem affects your income over the next 3 years.
baja (Oct 16, 2020), hemmjo (Oct 15, 2020), Toolmaker51 (Oct 15, 2020)
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