c. 1825 Enoch Robinson begins manufacturing door knobs and other hardware, independently and with others, in Cambridge, Massachusetts.
1831 January 10: New England Glass Co. wins lawsuit against Union Flint Glass Company for violating Robinson / Whitney glass pressing patent
1843 January 10: Enoch Robinson: “Improvement in the Method of Attaching Door-Knobs to Their Spindles”
1865 Ammi B. Young, in his journal, writes that E. Robinson & Co. “are esteemed the best locksmiths in this country.”