Abstract: A glazing fastener for mounting either rigid or flexible storm windows employs two elongated plastic strips: a channel strip having a narrow lengthwise channel, and a glazing strip having a narrow lengthwise insert flange for insertion into the channel. Walls of the channel and sides of the insert flanges have pairs of spaced apart longitudinal complementary ribs sized and positioned for interengagement. In a flexible glazing strip such ribs also enable the flexible plastic to be progressively stretched for a wrinkle-free fit. The glazing strip also has a laterally extending external flange positioned to remain outside the channel for engaging the glazing sheet, either to hold a rigid glazing sheet in place or to apply tension to a flexible glazing sheet. Various embodiments of the external flange are described including an embodiment adapted for use as an independent frame in a sliding window sash.

Abstract: A glazing fastener for mounting either rigid or flexible storm windows employs two elongated plastic strips: a channel strip having a narrow lengthwise channel, and a glazing strip having a narrow lengthwise insert flange for insertion into the channel. Walls of the channel and sides of the insert flange have pairs of spaced apart longitudinal complementary ribs sized and positioned for interengagement. In a flexible glazing strip such ribs also enable the flexible plastic to be progressively stretched for a wrinkle-free fit. The glazing strip also has a laterally extending external flange positioned to remain outside the channel for engaging the glazing sheet, either to hold a rigid glazing sheet in place or to apply tension to a flexible glazing sheet. Various embodiments of the external flange are described including an embodiment adapted for use as an independent frame in a sliding window sash.

Abstract: A double-wall greenhouse with flexible plastic walls is disclosed. The side walls and roof of the greenhouse form an integral tunnel-like shell about an unobstructed internal space. Opposite ends of the shell are closed by end panels. The inner and outer surfaces of the shell are formed by parallel inner and outer flexible plastic glazings which enclose the supporting framework of the shell. Similarly, each end panel has inner and outer flexible plastic glazings enclosing its supporting framework.The greenhouse can be built in any desired length simply by increasing the number of segments forming the shell. One segment includes two spaced-apart, parallel, upright archlike structural members whose lower ends are secured to opposite parallel sills. A sheet of plastic glazing extends along uninterrupted inner surfaces of the structural members from one sill member to the other. It is secured to the outer surfaces along its edges and ends and uniformly stretched between the members.