Merritt Burt's Patent Safety Pinion (Center Wheel and Pinion from National Watch Company Movement) On September 13, 1864, Merritt Burt was granted the first patent for a safety pinion design.
National Watch Company (Elgin) B.W. Raymond #829 Marked "Burt's Patent" "Mainspring Events" The large mainspring that serves as the power source for a mechanical watch movement can also become a.
Pictured: Illustration of the Ogden Mansion After the Fire, 1871 (top). Stereoscopic View - Mahlon D. Ogden Mansion, After the Great Chicago Fire, Published by W.D. Fay & Co., 1871.
Pictured: Building at Corner of Lake and Clark Streets (National Watch Company Sales Office), Chicago, After the Great Chicago Fire in 1871. [A brief departure from our ongoing study of.
H.H. Taylor (Private Label) #246713 As discussed in the previous article, the very first stem wind movements emerged from the Elgin factory in June of 1873. These movements were key-set.
Pictured: Early Double-Sunk “Elgin Nat’l Watch Co.” Dial, c.1874 Early double-sunk dials produced at the Elgin factory are frequently marred by a mysterious circular crack around the inner perimeter of.
