blinds [2]
Devices that roll or fold up, serving to filter or block light and provide privacy.
roller shade 
Shade with a roller containing a spring that causes the shade cloth to roll up.
flat end pin 
End of the roller regulating the spring’s tension and its stopping mechanism.
batten 
Narrow flat wooden part that, inserted into the shade cloth’s hem, serves as support.
bracket 
Part into which the roller pin is inserted and that supports the shade.
round end pin 
End of the roller serving as its axle; it turns in the bracket.
coil spring 
Instrument that tightens as the shade cloth is lowered and that pulls it up as it relaxes.
winding mechanism 
Spring mechanism allowing the shade cloth to roll up and down.