Removable sash window construction having releasable guide members
AssigneeChelsea Industries, Inc.
InventorsJohn T. Forbis, David Klimek, Jeffrey V. Miller
Life of this patent
Estimating the term…
Abstract
A window assembly has a sash vertically movable within a window jamb and positioned in the jamb by elongated side guide tubes enclosing counter balance means and resiliently biased partially into engagement with side ploughs of said sash, with the guide tubes extending outwardly from channels provided in opposed side jamb members. The guide tubes prevent lateral displacement of the sash as the sash is positioned within and moves from a window open to a window closed position within the plane of the jamb. The guide tubes can be reciprocally and resiliently compressed into the channels to release the ploughs and sash whereby the sash can be removed from the window construction.
Claims26
A window construction having high wind load resistance and ease of mounting and dismounting a sash within a frame,
- said construction comprising a fixed position frame defining elongated first and second side jambs, each having an elongated axis and an inner surface,
- a sash defining first and second stile side members each having an elongated axis and lying within said first and second side jambs, respectively, and mounted for movement axially of said first and second side jambs to a window open position and a window closed position,
- said stile side members having an axial length less than the axial length of said first and second jambs,
- said stile side members forming sides of a window sash,
- a guide member having an elongated axis and extending between one of said side members and one of said side jambs to mount said sash for movement to said open window position and closed window position,
- said guide member being removably mounted in an elongated channel extending inwardly from said inner surface of said first jamb and having a portion extending out from and resiliently biased by a resilient member to an outer sash supporting position,
- a plough formed by a portion of said first stile and facing towards said elongated channel so as to receive a portion of said guide member extending out of said elongated channel whereby said sash is supported for sliding into said open and closed position and positively supported against wind pressures,
- a counter balance mounted in said guide member for supporting said sash said counter balance being removable with said guide member for ease of replacement when desired,
- weatherproofing containing said guide member to provide air filtration resistance,
- said channel and resilient member being dimensioned and selected to permit retraction of said guide member into said channel whereby said sash is unobstructed by said guide member and can be removed from said frame.
In a window construction having a removable and replaceable sash mounted in a window jamb, the improvement comprising,
- a hand removable guide member for guiding said sash to an open window or closed window position
- said guide member carrying a counter balance means for balancing said sash in a number of desired positions said counter balance being removable with said guide member for ease of replacement when desired,
- and means for positioning said guide member to prevent removing said sash from said jamb or to allow removal of said sash from said jamb,
- said guide member being constructed to provide said window construction with a NWWDA wind load resistance grade of at least 60 psi of positive or negative pressure measured at a wind of about 126 miles per hour sustained and an air infiltration below about 0.05 cubic foot per minute/per foot of sash crack (perimeter around sash plus meeting rail).
Dependencies are inferred from the claim text.