Yale & Towne Manufacturing Co., Stamford, Connecticut - 2 movements, page 3

Yale Model No: 2 c.1890. Single Pin Dial Time lock. This lock was marketed as a smaller version of the Model #1 where size was of greater consideration. (See last picture above). Although it has a single pin dial vs. the double pin dial of the #1, there still are two movements. An additional dial indicates the day of the week. Although this unit is smaller than the #1, it was priced at the same $500. This model did not sell well and was discontinued soon after introduction. Just under 500 were produced and today fewer than 25 are known are to exist. Other examples of two movements controlled by one dial are Beard & Brothers Type 2 and Mosler's first time lock. Movement #444, case #96. file 100a

A feature unique to this type of time lock (pin dial) is that as well as being ' off guard ' it can go ' on guard ' in accordance with the settings of the pins. As such it is designed to run continuously, unlike the majority of time locks which go off guard when they run down. However, if the movements are allowed to stop completely they will take the lock off guard, despite the settings of the pins.