Casement window

Casement window (or casement) is a window that is hung vertically, hinged one side, so that it swings inward or outward. A hinge is a type of bearing that connects two solid objects typically allowing only a limited angle of Rotation between them ^[1] Casement windows were the most common house window before the sash window was introduced and usually contain leaded glass. A sash window or hung sash window is made of one or more movable panels or "sashes" that form a frame to hold panes of glass which are often separated from other panes Glass consists of a network former typically Silica (SiO2 and network modifiers including alkali fluxes such as Potassium oxide or Sodium ^[2] Casement windows are typically attached to the vertical side of the window frame although they can be horizontally placed. They are opened with a crank or a lever or cam handle placed at around hand height or at the bottom and serve as window locks. A crank is an arm at right angles to a shaft (an Axle or spindle by which motion is imparted to or received from the shaft it is also used to change circular into Reciprocating A cam is a projecting part of a rotating Wheel or shaft that strikes a Lever at one or more points on its circular path A handle is a part of or attachment to an object that can be moved or used by hand ^[3]

Window locks use lever handles.

Often the glass panes are set in a rabbeted frame and sealed with beveled putty or glazing compound to secure the glass. A rabbet (also known as rebate) is a recess or groove cut into the edge of a piece of machineable material usually Wood. A beveled edge refers to an edge of a structure that is not perpendicular (but instead often at 45 degrees to the faces of the piece Putty is a generic term for a plastic material similar in texture to Clay or Dough typically used in domestic construction and repair as a sealant or filler Glazing is a transparent part of a Wall, usually made of Glass or Plastic ( acrylic and Polycarbonate)

Casement window swinging out	Danish casement window	Casement window on Crete	Fort Sam Houston
Casement window	Casement window swinging in

Footnotes