Insulating a window pane

A double glazed window structure consisting of a rectangular frame with a first pane securely mounted therein, said first pane having a periphery, a sealant tape adhesively fastened to said entire periphery of said first pane, a rigid flat retainer support member securely fastened to said frame, said rigid retainer support member extends around said entire periphery of said first pane, said retainer having one end abutting said first pane, said retainer having the other end parallel to said one end and defining a linear edge, said retainer support member having a flange extending parallel to the body of said retainer and in a direction away from said first pane, said retainer support member having a midpoint on said body that is substantially midway between said one end and said other end, said flange is connected to and integral with said midpoint of said retainer, said flange having an edge parallel to said linear edge and adjacent thereto, a second pane in sealing engagement with said flange and said tape to define a dead air space between said panes, said flange cooperative with said retainer to define a channel therebetween, said flange having a series of abutments lying inwardly to said channel, a flat longitudinally extending trim member having an outwardly extending strip, said strip having abutment means for latching with said one of said abutments on said flange to secure said trim member into position such that its one outer end abuts said frame and the other outer end abuts said second pane to maintain pressure thereon to maintain said second pane in engagement with said sealant tape.

A system for creating a dead air space between an existing window with a periphery that is fully seated within a window frame and a piece of glazing to be mounted adjacent thereto, said system comprising a piece of glazing with an exterior surface an interior surface and a periphery, said exterior surface being closer to said existing window than said interior surface, a deformable sealant tape adhered to the periphery of said existing window for contact with said exterior surface of said glazing, said sealant means operative to space said piece of glazing away from the existing window and to seal the space therebetween when said piece of glazing is properly compressed, retainer means secured to said window frame and being operative to compress said piece of glazing against said sealant means thereby forming a dead air space, said retainer means having a continuously longitudinally extending linear abutment means running the full length of the periphery of said glazing, said retainer means having a flat continuous rail member secured along its length to said window frame running the full length of the periphery of said glazing, a trim member with a continuously longitudinally extending latch means running the full length of the periphery of said glazing but spaced away from and movable with respect to said retainer means to latch onto said abutment means for compressing said piece of glazing against said sealing strip, and said latch means being selectively operable with said abutment means for adjusting the space between said retainer means and said trim member by tensioning said trim member to compress said glazing while seating a portion of said trim member firmly against said window frame to compress said sealant tape mounted between said piece of glazing and said window, and said trim member maintaining a constant continuous pressure along the full peripheral length of contact with said glazing.