1. What book are they from?
"507 Mechanical Movements" by Henry T. Brown. It was originally a reference published in 1868.
2. What are they made out of?
There is another blog post about how they are made! In short, I designed them in Solidworks or Onshape and printed them all on Form 3 3D printers.
3. Why are some skipped?
I skip some of the less novel ones. For example #12 to #23 are all different configurations of pulleys, so I picked three of those and skipped the rest for now.
4. Why are the descriptions so odd?
For the nameplates on each machine, I took Mr. Brown's description and abridged them to fit in the space. It's a balance of the spirit, the goofy 19th century phrasing, and brevity.
5. Can I download CAD or .STL files?
Not at the moment, but I'll be working something out soon. Contact me for specific inquiries.
6. Can I use the images on my site/blog?
Probably, but I'd ask that you link back to the site and ask me about it first.