This is supposedly Abe Lincoln’s failed attempt at patenting something. What?

Cracked by: badideabear, rickde, Rogi, Sujoy, Bharath, Manish Achuth, Dibyo, raklodramA, vinayaknp, KK, Ananth, Vishnu Prashanth, Bipin Banavalikar and Sumanth Patlolla