Locking mechanism for double-sliding sashes
AssigneeYoshida Kogyo K.K.
InventorSyuichi Hosooka
Life of this patent
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Abstract
A locking mechanism for double-sliding sashes is provided to fasten inside and outside sashes and lock the fastened sashes to a window frame by a single operation using a handle. The mechanism comprises a crescent sash fastener composed of a fastening member and a receptacle member. The receptacle member is revolvable by being pushed by a projection of the fastening member which is revolved by a handle to fasten them together. The revolving movement of the receptacle member is converted into a vertical movement of a driving rod provided in a meeting stile of the outside sash. The vertical movement of the driving rod rotates locking levers which are linked to the rod at the upper and lower ends thereof to push the window frame in a firmly secured condition.
Claims3
A mechanism for locking a dual sash window assembly in which a pair of sliding sashes are mounted in parallel, closely spaced planes within a supporting frame for relative horizontal sliding along the sliding frame, which comprises
- (a) a crescent fastening member mounted on the lateral face of the meeting stile of the inside sash in a manner capable of being revolved pivotally by a handle, said crescent fastening member being provided with a pusher projection in the radial direction opposite to the crescent of the crescent fastening member,
- (b) a receptacle member mounted on the inward face of the meeting stile of the outside sash in a manner capable of being revolved pivotally, said receptacle member being provided with a hooked part bent inwardly and coming into engagement with the crescent of the crescent fastening member when the crescent fastening member is pivotally revolved and being provided with a contact projection coming into contact with the pusher projection of the crescent fastening member and pushed by the contact projection when the crescent fastening member is pivotally revolved so that the receptacle member is revolved pivotally,
- (c) a driving rod provided in the meeting stile of the outside sash and linked with the receptacle member and moved up and down by the revolving of the receptacle member, and
- (d) locking levers each being linked with the driving rod at the upper or lower end thereof and revolvable by the up-and-down movement of the driving rod to push the side walls of the supporting frame each at one end thereof or come apart from the side walls of the supporting frame.
Dependencies are inferred from the claim text.