Storm window

Claim 1

A storm window arrangement mountable on an external wall surface of a building over and spaced from a primary paned window recessedly mounted in an opening in the wall and set back from the external wall surface, said storm window arrangement being of multi-part construction, including a window pane, a multi-part mounting support for said window pane including three elongated channel shaped members securedly mounted on the external wall surface surrounding the periphery of the wall opening on three contiguous sides, and presenting a fixed three-sided frame having an inner, inwardly opening, continuous channel on said three sides, said frame having an open fourth side, said window pane being edgewise slidably insertable through said open side into, and supportable in and by, said continuous channel in a mounted position over and covering the wall opening and spaced therefrom, said window pane as mounted additionally covering and being spaced from and with respect to said primary paned window, said window pane being removable from said continuous channel, a fourth elongated channel shaped member similar to the first three said channel shaped members, said first three channel shaped members having a size and channel depth providing a friction fit for the window pane, with the lengths thereof being sized to closely fit the window pane in height and width, said fourth channel shaped member constituting a closure for the open fourth side and forming with the other three a continuous closed channel enclosing and supporting said window pane, said fourth member being removably mounted on and frictionally supported on and by the exposed edge of said window pane subsequent to placement thereof in the three-sided channel, sealing means between said channel members and said wall, and a friction seal between all said channel shaped members and said window pane.