|From posting in Lost Illinois Manufacturing|
In case the Facebook "posting" link is not permanent, I include the first two photos from the posting and summarize the posting.
a precision jeweled lever escapement as the heart of the movement."
As electricity became reliable and accurate, the mechanical escape clock became obsolete. But the company had already started making watt-hour meters and other products and continued to grow.
(One of the first commercial atomic clocks was bought by a power company so that they could make small adjustments in their 60-hertz power so that over a period of time a day would average, with atomic precision, 60cycles*60seconds*60minutes*24hour cycles.)
By 1970, the company had four other plants in the US and 6 other plants in the world. So when Schlumberger bought the company in 1975, they closed the Springfield plant in 1978 by moving its production to other plants.
At the end of the posting are the links: county and company.
|Springfield Rewind posted|
Sangamo Electric 11th St - Nov 1967