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.
...we'll learn more by wandering than searching...
Workers baking bread at the Colonial Bread Factory. Springfield, Missouri. 1950.
Fullsize image: https://s3-us-west-1.amazonaws.com/h...s_fullsize.jpg
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.
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