Window lock structure
AssigneeTruth Incorporated
InventorsWayne C. Bates, Wilbert C. Wallin
Life of this patent
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Abstract
A window and lock structure therefor for drawing the window sash tightly against the window frame, with the locking structure including a keeper on the window sash engageable by a locking shoe mounted on the frame and with the locking shoe having compound movement to engage the keeper and draw the sash tightly closed, with the movement of the locking shoe being derived from mechanism actuated by engagement with another part of the window sash as the window sash is closed.
Claims10
A lock structure for a window having a frame and a pivotally-mounted sash comprising, a keeper mounted on one of said frame and sash, a locking shoe carried by the other of said frame and sash for locking engagement with said keeper when the window is closed, said locking shoe being offset from the keeper when the window is open, means mounting said locking shoe for both bodily elevation and rotation to move into engagement with the keeper and draw the sash to closed position as the window closes, the means actuable by the window as the window closes to operate said locking shoe.
A window having a frame and a movable sash and lock structure for tightly closing a part of the sash against the frame automatically in response to closing movement of the sash comprising, a keeper mounted on the sash and having an inclined catch surface, a housing mounted on the frame, a locking shoe mounted on the housing for bodily movement by a pivot pin floatingly mounted in an elongate slot, and actuable means engageable by the sash including a vertically movable link pivoted to the locking shoe for moving said locking shoe both upwardly into position behind the catch surface to exert a lift force on the sash and laterally to have the interengaged locking shoe and catch surface move in a direction to draw the sash tightly closed.
Dependencies are inferred from the claim text.