Uploaded March 2023 | Updated September 2026, 2 weeks ago
This video demonstrates a Yale Model #1, aka Yale Double Pin Dial, c. 1876.
The example shown has a unique automatic off guard setting device that allows the operator to let the time lock off guard without having to readjust the time set on the pin dials which is necessary on all other Model #1 time locks. To this author's knowledge, as explained in the video, this particular feature never went into production.
This video demonstrates a Yale Model #1, aka Yale Double Pin Dial, c. 1876.
The example shown has a unique automatic off guard setting device that allows the operator to let the time lock off guard without having to readjust the time set on the pin dials which is necessary on all other Model #1 time locks. To this author's knowledge, as explained in the video, this particular feature never went into production.
