Closure fasteners – Bolts – Sliding
Patent
1994-01-10
1998-07-07
Meyers, Steven N.
Closure fasteners
Bolts
Sliding
292165, 292DIG53, 70467, E05G 106
Patent
active
057757453
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a latch and lockset system according to the generic portion of claim 1. It is used for locking and unlocking flat structures serving to close accessible openings such as doors, windows, etc. as desired.
Conventional devices of this kind include assemblies of locksets and latch mechanisms for mounting in recesses, pockets and bores of a door leaf or window frame. The methods and means of mounting are important since the individual components such as locks, lock plates, bolts, square bars, escutcheons, handles or knobs, etc. must one after the other be fixed e.g. to a door leaf in accurate positions and directions. Daily use and, of course, any wrong handling or violence are likely to misadjust the system so that its correct function may be jeopardized. In certain cases this may bring about a safety hazard.
A latch mechanism for retracting a spring-biased draw bolt by partial rotation of a knob coupled to a latch spindle as described in GB-C-302 524 comprises in a transverse bore a tubular socket that holds a rotatable disc for operating a crosshead-type catch screwed to the draw bolt which is supported in a guide sleeve along a longitudinal bore. The longitudinal and transverse bores intersect horizontally. The conventional socket-and-rotor system includes a plurality of elements to be mounted singly in a rather cumbersome fashion. It has one spring only which must be weak if the door should be closed softly; consequently, such a spring would be insufficient to also prop up handles as frequently used or required nowadays.
It is an important object of the invention to improve such a latch and lockset system by simple and economical means so as to broaden utilization and to open wider fields of application. The new design is to require relatively small expenditure for adaptation to either civil housing or utility buildings. More particularly, embodiments of the novel system are to be suitable for both butt-ended and rebated doors as well as glass doors, thin partitions, etc. Another object of the invention is to develop a latch and lockset system which is made up of few component parts, apt for quick mounting and reliable in long-time use. Fast assembly and sure function are to relieve the craftsmen and users alike.
In a system including latch means such as a knob, handle or handle pair for operating a lockset arranged in two bores that intersect each other horizontally in a door, the handle having a neck attached to a rotor a catch of which acts upon a spring-biased bolt that extends through a guide sleeve in a longitudinal bore and is movable along a shifting axis, the rotor being housed in a socket seated in a transversal bore, the invention provides that lockset, catch and handle(s) form a common unit adapted to be mounted as a whole. It will be realized that such a unit greatly advances the art since the effort of mounting is enormously reduced and accelerated at the same time. Furthermore, the compact design thus achieved warrants solidity and enhanced performance.
The system according to the invention is distinguished in that the lockset and latch mechanisms are combined in a sturdy assembly which does away with the previous necessity of milling a pocket into the door leaf for receiving a lock, of providing spaced transverse holes of special shapes and of then mounting the outer ironwork (knobs, handles, escutcheons, etc.) so as to fit the lock with more or less accuracy, depending upon the individual craftman's skill and exactitude. The consequence was often a malfunction such as jamming or rattling.
All in all, the standard version of the novel system comprises the common unit of two handles interconnected via a rotor in a socket, two cover rings, a spring-biased bolt and a guide sleeve for the latter. Only the two intersecting bores must be provided in the door, which is done quickly and cheaply, and in a minute the system is completely mounted merely by introducing a handle sideways to point outwardly towards the free door edge whereby the socket is seated in the transversa
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Engel Heinz-Eckhard
Hoppe Friedrich
Estremsky Gary
Hoppe Holding AG
Meyers Steven N.
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