I found a few Damon patents not listed here:
115445 IMPROVEMENT IN PERMUTATION LOCKS
115714 IMPROVEMENT IN DEVICES FOR OPERATING SAFE DOORS - Invented with Hiram B. Tripp; possibly Benjamin F. Tripp’s relative?
125180 IMPROVEMENT IN PERMUTATION LOCKS
132068 IMPROVEMENT IN POCKET-BOOK TO PREVENT THE DESTRUCTION OF PAPERS BY FIRE - Invented with Edward W. Glover
199699 LAMP - Patent Assignee
356547 BOLT WORK FOR THE DOORS OF SAFES, VAULTS, ETC - Patent Assignee
668783 TIME LAMPLIGHTING APPARATUS - Patent Assignee
RE4389 A reissue of 102,780
The patent # 120780 is transposed below, the patent # is 102780
Some interesting info:
901710 MOVEABLE VENTILATOR FOR VAULTS (1908) - Invented with Frederick S. Holmes when he was in private practice.
575705 CLOSURE FOR SAFES OR VAULTS (1897) is the first patent I have seen for cylindrical vaults. Frederick S. Holmes was General Superintendent at Damon Safe & Iron Works (Boston, MA and Philadelphia, PA) from 1887-1895. The application for the patent was filed in 1895 so it’s quite possible Holmes was aware of the design and may have inspired his design (along with Remington & Sherman’s cylindrical vault patent 1478085 in 1923) of the NY Fed’s cylindrical vault built in 1924.
There is enough info on Damon here to create his Wikipedia article…