Combination window casing and storm window frame

A combination casing and frame for use both as the window casing and as a storm window frame for a double-hung structural window and adapted to be mounted directly against the frame of the structural window, said combination casing and frame comprising:

• unitary top, side, and sill members, each of said top and side members having a casing portion adapted to overlie a portion of the structural window frame, each of said members having front, intermediate, and rear flanges which extend inwardly with respect to the periphery of the casing and frame, are aligned with the corresponding flanges on the other members, and form sash-mounting channels, means on said flanges on the side members providing tracks for sliding movement of sashes on the side members, latch-engaging means on one of said flanges of each of said side members, and latches movably mounted on opposite sides of said sill member in retractable engagement with said latch-engaging means for mounting the sill member on the side members and demounting the sill member.

A combination casing and frame for use both as the window casing and as a storm window frame for a double-hung structural window and adapted to be mounted directly against the frame of the structural window, said combination casing and frame comprising:

• unitary top, side, and sill members, each of said top and side members having a closed tubular casing portion adapted to overlie a portion of the structural window frame, each of said members having front, intermediate, and rear flanges which extend inwardly with respect to the periphery of the casing and frame, are aligned with the corresponding flanges on the other members, and form sash-mounting channels, said flanges of the top and side members extending from said casing portions, second flanges extending laterally from said side member flanges and providing tracks for sliding movement of sashes on the side members, and means defining latch-receiving notches in said second flanges for engaging sash latches.

In a storm window frame for use with a double-hung structural window, said storm window frame including top and side members, and means for slidably mounting sashes on said side members, the improvement which comprises:

• latch-engaging means provided in said side members, a sill member mounted on said side members as part of the storm window frame, and latches movably mounted on opposite sides of said sill member in retractable engagement with said latch-engaging means, for mounting and demounting the sill member.