Patent ID: 11946312

Abstract:
A single-hung tilt-to-clean window frame of otherwise standard configuration is furnished with a non-sliding upper sash and a vertically sliding lower sash with each sash having typical tilt-to-clean hardware. When the lower sash is opened and adjusted up/down, insect screen (331) attached to the bottom of the lower sash is dispensed from a self-storing roller unit (330) hidden inside the window sill, automatically filling the ventilation aperture. Thus, vision-restricting screening is out of sight until actually required. Also, the cold wind, muggy air or precipitation that can hinder cleaning operations are blocked by an impervious membrane (334) stretched over the window's opening, before cleaning begins, by way of a handle (343) attached to cables (340) pulling a rod (336) moving a tube (335) placed behind a fold in the membrane.