Closure fasteners – Bolts – Multiple
Patent
1984-05-14
1986-11-11
Wolfe, Robert L.
Closure fasteners
Bolts
Multiple
70120, 109 59R, 292140, E05C 904, E05C 914
Patent
active
046218459
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention concerns an integral peripheral locking device for closures comprising one or more longitudinal members situated on at least one of the sides of the closures and actuated by a translational movement to penetrate the corresponding housings in fixed frames. It is suitable for use in closures, such as doors, including doors with two leaves. It may be employed with shutters, safety vaults, safes, motor vans, trucks, or railway cars.
2. Description of the Material Information
United Kingdom No. 29,067 describes a door locking device which comprises two bars or plates adapted to be actuated by a to and fro movement to enter into and come out of corresponding recesses made in the door frame when actuated by a key lock.
U.S. Pat. No. 2,610,368 describes a closing mechanism for a two-leaf door. A bar, mounted vertically in the free edge of the first leaf and extending approximately the whole height of the leaves, can be actuated by a sliding movement to penetrate into a corresponding groove in the second leaf, when operated by a barrel lock key. The patent France No. 1,318,783 describes a safety device for locking doors which fundamentally comprises a sliding flat iron fitted on the edge of the door and a slotted head fastened on the frame, the said flat iron being capable of engaging in the slot to lock the door over the whole of its height. U.S. Ser. No. 16,874 discloses a vertical bar mounted in the free edge of the door, extending approximately the whole height of the door, actuated by a lock which, to lock the door, houses itself in a slot provided in the frame of the said door.
These locking systems reveal weak points, especially at the top of the frame and at floor level. Consequently, they do not offer absolute security against break-in. In another respect, these systems are complicated because they comprise several bars which must be interlinked and simultaneously controlled by complex operating and guiding components.
SUMMARY OF THE INVENTION
The invention provides secure integral peripheral locking for a closure by means of a simple, practical and rational device compressing of approximately the same dimensions as the closure, sandwiched between the faces of the closure and cut along one diagonal to form two equal and opposed triangles placed edge to edge. The two triangles are capable of moving apart from one another in the direction of the other diagonal so as to project peripherally and engage in corresponding slots provided in the fixed frame and in the threshold, their translation movement being guided and controlled by suitable means.
The means of guiding the two triangles are ball bearing tracks directed in the axis of movement of each triangle. The two faces of the closure are joined through perforations or cut-outs in the triangles, thereby lightening the assembly.
A means of control for extending and retracting the two triangles comprises a cam, which may be a circular disk-shaped cam. Each face the cam is grooved with a spiral slot in which a finger integral with one of the two triangles is engaged, such that rotation of the disc by one complete revolution brings about the radial movement of the fingers and consequently that of the triangles with which they are integral.
A first means of driving the cam controlling the two triangles comprises a handwheel keyed to the cam by means of a shaft. This handwheel which can be located on the inner side of the closure, directly operates the closure locking device.
A second means of driving the cam controlling the two triangles comprises a handwheel, a lock, and a dog clutch. The lock is mounted on the handwheel, and is operably associated with the dog clutch. The dog clutch is meshable with the cam. A key inserted in the lock engages the dog clutch. Rotation of the key causes the dog clutch to mesh with the cam, thereby joining the handwheel to the cam and permitting the rotation of the cam. The handwheel and key opening for the lock in this second means can be located on the oute
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Illich Russell W.
Wolfe Robert L.
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