Well, there are windows, and then there are windows. This posting is going to be about windows. Sounds simple, right? First, let's look at a window which has the different parts broken down (courtesy of a display at the George Read II House in New Castle, Delaware).

Starting at the bottom, there is the apron (1). If you follow the trim to the left and upwards, you will find the window casing (2). Inside of that is the window jamb (3) which abuts the window. The next part is easy--(4)is the glass light or pane.
The cross bar (5) at the top of the lower section of this double hung window is called the meeting rail. Right below that is (6), one of the muntins separating the panes of glass and holding them in place. Right above the apron (1) is the stool (13 --often called a sill by we non-construction types). Sitting on the stool (13) is a vital part of a working double hung window, the pulley (7). Running around the track of the pulley is a cotton sash cord (10), which is tied to the sash weight . And how do we find the sash weight? It's tucked inside the casing behind a removable piece of wood, the weight pocket (14) next to the jamb that can be pried out to access the weight which might have fallen inside the casing if the cord has broken.
Soon to come: more on windows and notes from the re-installation of the Read House Palladian window, complete with pictures. Thanks to the Delaware Historical Society for this great display!
Carolyn Roland, GRI CRS Patterson-Schwartz & Assoc. Inc.
Selling historic properties in Delaware
and Chester County, Pennsylvania since 1987. Office located in Hockessin, DE, on the Delaware/Pennsylvania line.
Search for properties and learn about the historic scene, past and present
The DE and PA Historic Real Estate blog Call: Direct 800-771-2332 Office 302-239-3000

Hi Carolyn ~ Windows - real ones, not those short-lived vinyl imposters - are such wonderful pieces of equipment. This looks a great exhibit and good for you for getting so many photos of it.
Liz
It was the best explanation of the parts of a window I have ever seen. Thanks, Liz!