The spelling of "sash fastener" is straightforward. "Sash" is spelled as /sæʃ/ in IPA phonetic transcription, with the symbol "æ" representing the "a" sound as in "cat", and "sh" representing the "sh" sound as in "shoe". "Fastener" is spelled as /ˈfæstənər/ in IPA, with the stress on the first syllable (/ˈfæst/), and the symbol "ə" representing the schwa sound as in "about". Together, "sash fastener" refers to a device used to secure a window sash shut.
A sash fastener is a type of hardware used to secure a window sash in a closed position. It is typically designed for vertically sliding windows, commonly known as sash windows, and is installed on the meeting rail or the bottom rail of the sash.
The sash fastener is composed of two main parts: a latch and a strike plate. The latch is usually a lever or a hook that engages with the strike plate to keep the window sash securely closed. The latch can be operated by lifting or rotating a handle, pressing a button or sliding it into position, depending on the design. It is usually made of durable materials such as metal, allowing it to withstand the forces exerted by the window sash.
The strike plate is fixed onto the opposite sash or the window frame. It contains a hole or slot that matches the shape of the latch, ensuring a secure fit when the window is closed and the latch is engaged.
Sash fasteners are commonly used in traditional or period-style windows, adding both functionality and aesthetic appeal. They provide a reliable means of securing the window sash, preventing drafts and enhancing security. Besides, sash fasteners also allow for controlled ventilation by enabling the window sash to be partially opened and secured at different positions.
The word "sash" traces back to the late Middle English period, derived from the Old French word "chasse", meaning "frame" or "case". It originated from the Latin word "capsa", which means "box".
The term "fastener" originated from the Old English word "fæstnian", which means "to fix" or "to make firm". It is derived from the Proto-Germanic word "fastinōną".
Therefore, the etymology of the term "sash fastener" can be understood as the combination of the word "sash", referring to a frame or case, and "fastener", meaning something that fixes or secures the sash.