Sargent & Greenleaf Type L Time Lock Movement 
Written by AnubisTTP on 2012-07-25  

Description

Sargent & Greenleaf is a prolific manufacturer of time locks and time lock components, and the Type L movement is a typical example of the type of movements used in older Sargent & Greenleaf time locks. Unlike most manufacturers of this era, which used movements manufactured by the E. Howard watch company, Sargent & Greenleaf constructed their own movements in-house. As a result, Sargent & Greenleaf time lock movements contain many distinctive design choices, such as a charismatic 'wagon wheel'-style dial and an unusual jeweled escapement that does not include a roller gem on the balance wheel. These movements were designed to be used in groups for redundancy; typically two or three movements would be installed in a single time lock. We have been unable to accurately date this item, but suspect it was manufactured sometime between 1890 and 1920.

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Sargent & Greenleaf Type "L" time lock movement, normal operation.


Sargent & Greenleaf Type "L" time lock movement, view of escapement.

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