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

  A

  B

  C

  D

A. Model Triple K. 1904. This lock uses Yale's' medium sized Type L movement. The space on the side contains the mechanism for the bolt dog. Movements consecutively numbered, #21885, #21886, #21887, case #370. From a bank vault in Stockbridge, Michigan.

B, C & D. Model L Triplex. These locks ('B' & 'C') also use the medium sized Type L movement by Seth Thomas and were by far the most most common sized of the coffin style movements used by Yale. The model L was used with automatic bolt motors so no bolt work was in the case; only the release levers within the bottom bulge of the case to actuate the bolt motor. Note on lock 'C' the two locks middle and right are later replacements. This lock, with the eyelets though the glass was a rarer version than that through the door as seen on 'B'. Lock 'D' has has a more complex release bolt and later Swiss movements with optional magnifiers. These Swiss movements are also used in many later plastic-fronted locks that had the magnifiers built in to the front plastic piece. Movements consecutively numbered. This was one of the most successful time lock designs made by Yale with over sixteen thousand versions of this lock made between 1892 and 1920. file 70, file 23

The last two photos show a typle installation of a the model Triple K in a Herring-Hall-Marvin safe from the early 1900's. This company was an amalgamation including the earlier company of Joseph Hall from the late 1880's. A medallion of Mr. Hall's profile can be seen here.