Step 1 : Introduction to the question "1. Also, in 1891, a mechanical engineer, Whitcomb L. Judson, invented something we would find it hard living without. What was it?"
...1. Zipper 2. Bound buttonhole 3. Hook and eye 4. Metal snaps Judson, of Chicago, Illinois, was issued 30 patents over 16 years for various inventions. However, his biggest and his claim to fame was the chain lock fastener, a forerunner to the zipper. The item manufactured by his "clasp-locker" machine that he also invented, a hook and eye type of fastener meant by him to be used on shoes. However, in his first patent application he also wrote that there were "possible applications for corsets, gloves, mailbags and generally wherever it is desired to detachable connect a pair adjacent flexible parts" [sic]. It took a while but his patent was finally issued in 1893 just in time to be exhibited at the Chicago World's Fair. Incidentally, Elias Howe invented a type of zipper some 40 years or so before Judson, but it was unsuccessful because of the work one had to put into it to use it. I'm indebted to blakey for bringing this up.
Step 2 : Answer to the question "1. Also, in 1891, a mechanical engineer, Whitcomb L. Judson, invented something we would find it hard living without. What was it?"
Zipper:
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