Codex Archiva: Machina
http://www.megaupload.com/?d=24P0D245
Codex Archiva: Mechanica
http://www.megaupload.com/?d=G65SEN8V
Codex: Tesla
http://www.mediafire.com/?33db3ddc05s3e25
Please enjoy these archives, I'm just a random guy trying to help out the community. Machina has a 499 pg PDF with every single one of Teslas' patents.
Collectively, it's about 375mb worth of documents, patents, schematics, equations. I do hope you enjoy, some of John Hutchisons' schematics are there as well.
*PS couldn't find the appropriate section, please bear with me.
Oh yeah, and here's all of Tesla's patents. Just so you can tell I'm not bullshitting without downloading a massive mb archive of documents.
http://www.scribd.com/doc/55950041/Complete-Patents-Nikola-Tesla