Victorian style Transom Window Rod Opener Mechanism . This one is very RARE. See below for construction and patent information.
Required vintage transom hardware for that renovation that your doing. No hardware/ screws included. Complete unit as I see it with all of the brackets for mounting and attaching to the door frame and window. All pieces move freely, could use some TLC. I estimate 95%+ of the paint removed. You can finish it or leave as-is. Some parts of the long rod are a little rough due to age.
Transom rod assemblies consist of the long rod, a shorter rod attached near the top of the long rod and is about 8” +/-. This shorter rod attaches to the offset bracket that attaches to the window.
There are two intermediate attachment brackets (one near the top of the long rod and one below the shorter rod) to attach the assembly to the wood door frame.
Third attachment is the actual squeeze, pushbutton or turn device that locks onto the long rod.
All of the items I list have all of these components. More information is available online for the assembly process.
The sliding stop is actually brass in Victorian style. It turns to tighten against the rod, This is an early model. On the second picture, and I know it is hard to see, the brass finger lift is stamped with: J.F WOLLENSAK CHICAGO, showing multiple patent dates - the oldest is Mar 7 (1872) as best as I can make out visually..
See pix for dimensions of the unit and the mounting. Offset rod is approximately 8" overall and it has an unusual end attached to it. Not the normal bent rod but this could be due to the technology at the time. The offset arm is approximately 2" x 2 1/2". If you plan to paint this, make sure you clean it well to remove and residual from the surfaces that slide or pivot.
Thanks for looking!