CA1098376A

CA1098376A - Insulated shuttered window

Info

Publication number: CA1098376A
Application number: CA335,750A
Authority: CA
Inventors: Bernard A. Melanson; George S. Read
Original assignee: Individual
Current assignee: Individual
Priority date: 1979-09-17
Filing date: 1979-09-17
Publication date: 1981-03-31

Abstract

ABSTRACT

A window unit has a frame which encloses an insulated rigid shutter. This shutter is movable between a storage space in the window frame and a second position in the frame between two panes of glass. The shutter is moved by means of a cord.

Description

lQ~8376 This invention relates to a perimeter framed ,~,indo~J incorporating a sliding insulated shutter to reduce heat flow through the window.

The problem we are facing is high heat transfer ~hrough glass wqndows. Common windows are made up of one or more panes of glass supported by a frame~ This type of window using only glass layers and air spaces have low insulating properties. Attempts to add insulation to the window in the form of a shutter or blind have had limited success as these shutters or blinds are usually attached to the interior of the window requiring considerable space whether stored or in use. A~shutter fastened to the exterior of the window glass is exposed to the elements and is subject to ice and snow ~uildup~ also it is difficult to open or close the shutter from the inside. A shutter ins~alled on the int~rior of the window glass permits the ~lass to cool resulting in condensation on the interior glass surface.

t~Je have found that these problems may be overcome by placing the shutter inside the window frame between the inner and outer glass panes, resulting in a compact window ~ivh high insulating properties when the shutter i5 closed.
The shutter, when opened stores inside the window frame svorage compar'ment. The shutter can be opened or closed oy pulling on a cable.

This window construction has advantages in reducing heat flow over any previously know window. These insulation properties can also be used on hot summer days to prevent heat build up in the building thus lowering air conditionin~
costs~

-- L,, --Previous temperature measurements on an experi-mental ~nndow have shown that a marked increase in the interior glass temperature results when the shutter is closed.

1C~"8376 In drawings which illustrate embodiments of the invention, Figure 1 is the interior view of the window~
Figure 2 is a top view of the window as installed in a wood framed wall.
Figure 3 is section A-A of Fig.l, Figure 4 is section B-B of Fig. 1, Figure 5 is section C-C of Fig. 1, Figure 6 is an interior view of a single shuttered window, Figure 7 is a top view of a single shuttered window.

l~q8376 SPECIFICATIONS

The window illustrated consists of, a top member (1), a bottom member (2), and two side members (3) forming a perimeter frame which incases the glass and shutters. In this frame are fastened two interior sub-frame posts (4) and two exterior sub-frame posts (5). To the interior sub-frame posts (4) are fastened tracks (35) in which the interior glass panes slide. To the exterior sub-frame posts (5) are fastened tracks (~3) which contain a screen and the exterior glass. The tracks (35) & (53) are attached to their respec-tive sub-frame posts by track retaining members (37). The tracks are held against the glass panes by a foam cushion (36). The interior glass rests in the interior bottom track (52). The exterior glass panes and the screen rest on the exterior bottom track (51). Similarly the tops of the r interior and exterior glass laanes rest in top tracks (S4 &
55~ respectively. Square frame members (33) are attached to the exterior sub-frame posts (5). Plywood panels {12) are fastened to the exterior of frame members (33) to side members (3), to top member (1) and to bottom member (23 extending beyond side members (3), top member (1) and bottom member (2) for the purpose of fastening the ~nit to a wall. Top blocks (40) are attached to the top member (]) a~d bottom blocks (41) are attached to bottom member (2)o Square members (34) are attached to the interior sub-frame post (4). ~xterior panels (31) are then ~astened to side member ~33) top members (~0~, bottom member (~1~ and inserted in side members (3). Interior panels (32) are ~astened to side member (3~)a top members (~0~ bottom member (41) and inserted in ~ide member (3).

The space between the exterior plywood (12) and l~q83~6 the exterior panel (31) is filled with insulation (29).
The space between the interior panel (32) and the interior of the window is also filled with insulation. The area between the interior and exterior panels (31,32) is the shutter storage compartment (8).

The shutter (9) is of built up construction consisting of a top piece (56)~ bottom piece (57) and si~e pieces (58), these pieces are covered on each side and one end by protective sheets (21). The area between the sheets is filled with insulation (22). The shutter has top rollers (23) attached to the top piece (56).
These rollers roll on a top rail (2~) and bottom rail (25). The shutter is guided by top guides (27) and bottom guides (59). These guides also act as weather seals between the window frame and the shutter. Seals (28) are attached to the sub-frames posts (4,5) and rub on the shutter fo form a seal.
The ~hutter is moved from its shutter storage compartment (8) to the area between the interior and exterior glass panes by means of a cable (11) extending from the wall interior through panel (32) around wheel (39) under right shutter, under left shutter, around wheel (60) on left end of bottom rail (25) back under left shutter, under right shutter around wheel (26) through panel (32) and back through the interior of the wall in which the window is installed. The cable is attached to the underside of the right shutter between wheel (39) and wheel (60) and attached to the underside of left shutter betwcen wheel (60) and wheel ~26). 'I'his provides positive shutter movement from the interior of the room. A seal (61) seals between the two shutters when they close.

lQq8376 There is one top and one bottom interior glass pane (17) one in each track sliding vertically in slides (35).
Plastic or vinyl pieces (~) seal between the two glasses and hand rails (4~) provide a means for opening or closing glass. The panes are locked by means of latches (~5).

To install the window unit push the unit in from the exterior of the rough square opening of the wall and fasten plywood (12) to the inner rough square opening stud (63). The wall exterior plywood (64) stops at the edge of outer rough square opening stud (62). The exterior building paper (42) then covers the plywood (12) up to the exterior sub-frame post (5). The exterior wall covering (13) also goes to the exterior sub-frame post (5). A
calking (16) then seals the covering to the post~ The interior wall vapor barrier is then put on and extends to the interior sub-frame post (~). The interior finish also covers the window up to the interior sub-frame post (~).
A casing (15) then seals the gap between the interior wall covering (14) and the post (~).
The construction and fastesning of this window unit can be accomplished by using all or any of the following methods, glue, nails, staples and screws.

When ~nstalled the only section of the window visible either from the interior or the exterior o~ the wall is the glass section of the window (6), its sub-frame posts (~, 5) and the center parts of top member (1) and bottom member ~2)o The shutter storage area is inside the wall and is not seen. The cable for moving the-shutt~rs extends through the wall to the room interior. ~ ~
_ ~ _ lQq8376 The window can be composed of two shutters that slide to the left and right storage areas, or two shutters that slide to the top and bottom areas of the window.
The window can have one shutter only (Fig. 6), that slides to either a left or a right storage compartment, or a shutter that slides to a storage compartment above or below the glass area.
The window glass can be fixed to the sub-frame and not movable, the glass can be incassed in a wooden sash sliding in the main frame, or the glass can be sliding on fiber slide rails attached to the sub-frame. The glass sections can be cpened by pivoting, sliding vertically or by sliding horizontally.
In the case where only one shutter is use~ (~'ig.
'~) the left interior su~-frame pGSt and the interior sub-frame post become one (65), a block (4~ is then fastened to post (65) to hold the pl~^lood panel (49).
The shutter then has to be in two parts so that it can be removed. The main shutter (~6) and shutter extension (~7) are fastened together by long wood screws (66).

Claims

"The embodiments of the invention in which an exclusive property or priviledge is claimed are defined as follows:"
(1) A window unit comprizing in combination; a rectangular frame including a pair of elongated, spacedly parallel first frame members and a pair of elongated spacedly parallel second frame members at right angles to said first members and connecting said first members, said rectangular frame enclosing within its boundaries an insulated rigid shutter, parallel panes of glass and parallel sheets of insulation, said parallel panes of glass forming a first space in which said shutter can be received, said parallel sheets of insulation forming a second space in which said shutter can be stored, said spaces being adjacent to and occuping a common plane, said shutter being movable between said first space and said second space in said common plane, and a cord is used to move said shutter along rails to either of said first pace or said second space.