| 摘要 |
A universal single hung window including a frame and at least one sash therein movable in the plane of the frame and tiltable about a lower edge thereof out of the plane of the frame, whereby the window may be used as a single hung or a hopper window in one position thereof, and in another position thereof may be used as a glider window. The window structure includes a thermal barrier between a prime window and a storm window. The sash is provided with a balance foot and lower sash guide structure to permit pivoting of the sash about the one edge thereof and support of the sash by a sash balance. Pivoting of the window is permitted on release of tilt release and sash guide mechanism at the upper edge of the sash. The tilt release and sash guide mechanism includes a sash guide member secured to the sash at the upper edge thereof, a tilt release member pivotally mounted on the sash guide member and a spring positioned between the upper sash guide member and tilt release member urging one end of the tilt release member into engagement with the frame.
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