1911 automatic door pull
I live on the second floor of a 1911 Edwardian building in San Francisco. There is an automatic door system in place but i am missing the pull handle. Let me explain further, on a landing on the second floor there is one end of a rod connected to the front door and when you pull on the handle the door opens, saving you the trip down the stairs. Well I am missing the handle but am not sure what this whole apparatus is called so i am having a hard time finding this handle online. Can anyone help me identify the name of this, or point me in the direction of purchasing one.
thanks for your time.