Multi-position window
AssigneeExtrudart Metal Products, Inc.
InventorMurray Parker McHeffey
Life of this patent
Estimating the term…
Abstract
A foolproof mechanism for operating a multi-positioned window is disclosed for general use, but is particularly suitable to institutional, commercial, industrial and other buildings with unrestricted ingress, and the window has a handle capable of allowing it to be in a tilt, swing, or closed position. Means are provided to lock the handle in each of the positions, when the window assumes the desired open position.
Claims7
In a multi-position window having a drive train coupled to a window handle, said drive train movable around the edge of the window cooperating with respective elements in the frame of the window to permit the window to be closed, tilted open, or swung open by movement of the handle and associated drive train to respective positions, an improvement comprising safety detent means connected to said window and actuated when said window is opened to either a tilt or swung open position to block said drive train against movement from the position corresponding to said respective open position of said window, said handle locked in the respective position enabling said window to assume said tilt or swung open positions, said safety detent means comprising a catch member spring biased to block movement of said train, a projecting end of said catch member and a strike attached to said frame bearing against said projecting end to move said catch member from said blocking position when the window is closed, further comprising a key operated latch, said train comprising a slot, said slot of said train and said latch cooperating to block movement of said handle to said swing open position and to permit movement of said handle for said window to assume said tilt position.
In a multi-position window having a drive train coupled to a window handle, said drive train movable around the edge of the window cooperating with respective elements in the frame of the window to permit the window to be closed, tilted open, or swung open by movement of the handle and associated drive train to respective positions, an improvement comprising safety detent means connected to said window and actuated when said window is opened to either a tilt or swung open position to block said drive train against movement from the position corresponding to said respective open position of said window, said handle locked in the respective position enabling said window to assume said tilt or swung open position, said safety detent means comprising a catch member spring biased to block movement of said train, a projecting end of said catch member and a strike attached to said frame bearing against said projecting end to move said catch member from said blocking position when the window is closed, said drive train being provided with a pair of ridges spaced apart by a land, said catch member comprising a hook and engaging said land to block said train against movement when said land is moved by said handle to said tilt position and said window is tilted open, and said hook end being engageable at one end of said ridges when said ridges are correspondingly moved by said handle and drive train and said window is swung open.
Dependencies are inferred from the claim text.