Sargent & Greenleaf, Rochester, New York - 3 movements

C. Model Triple A with associated bolt motor, 1889. Uses the same sized movements as found in the more common Model Triple B, but in a smaller case; excluding the normal bolt works, hence the smaller size. The lock was designed to sit on top of the separate automatic bolt opener (device below time lock). This is the company's first modular three movement design. While the design used modular movements they were not interchangeable, and each had it's specified location. One can usually see scratch marks made by the installer on each movement;  I, II, III indicating their order. The snubber bar is of the older design made with separate, welded pieces and the serial numbers of the case and movements indicate that this was a very early in the production. Case# 46, consecutively numbered "L"-size movements #199, #200, #201. Bolt motor # 331. The Burton-Harris type motor was one of the first to be used by S&G. Click here for a rare two movement version of this type of lock and here for another, later version of this lock.

One can infer the strength of the spring inside the bolt motor by the length of the key-grip giving leverage to the operator to wind it. The last picture shows the actual Diebold safe door that this lock was removed from. At this time Diebold was a safe manufacturer and had not yet entered the time lock market. file 111