Door or window closure

Door- or window closure comprising a housing with an operating mechanism for locking elements. The housing consists of a one piece U-profiled member of which the base supports a rotatable pinion coupled to an operating member and to a rack guided in a closing plate coupled to the locking elements. The housing further comprises two guide parts on either side of the U-profile connected to the respective side, said assembly defining spacings for a member securing the closing plate.

BACKGROUND OF THE INVENTION 
The invention relates to a door- or window closure comprising a housing to 
be secured to the door or window and an operating mechanism for locking 
members. 
Such closures are known per se in many versions. They are mostly 
constructed from parts obtained by punching and pressing sheet metal or by 
cutting them from solid metal; these operations are, however, complicated 
and expensive. 
SUMMARY OF THE INVENTION 
The invention aims to provide a closure, most parts of which can be 
manufactured from light metal- or extruded synthetic sections, a 
construction which is simple but nevertheless very solid. 
This is attained by the arrangement that the housing consists of a one 
piece U-profiled member the base of which supporting a guide for rotatably 
bearing a pinion therein coupled to an operating member. On either side of 
the U-profile spaced from the end thereof a guide part is situated within 
the housing and connected via a bridge part, to the respective side, which 
defines, together with the side, a space for a securing member for 
connecting the section with a closing plate, closing the open front end of 
the section. A sliding piece is guided herein which carries the locking 
members and a rack which through an elongate hole in the closing plate is 
in mesh with the pinion. 
Preferably a portion of the guide part has a central concave shape such 
that guide faces for screws serving to secure the housing to the door or 
window are produced. 
The closing plate is preferably provided with twice bent over end edges and 
the sliding piece consists of two longitudinal edges, confined between the 
bent over edges, and a heightened central portion, connecting the 
longitudinal edges, in which at least one opening is provided in which 
fits a coupling member carried by the rack. 
Each locking member comprises preferably a locking roller rotatable about a 
shaft protruding from the sliding piece. This is convenient as thus the 
closure is easily operable and can be tightened over a large track. 
The closing plate and the locking members are situated between the 
extensions of the U-section sides whereby a short closure is produced. 
Closing plate and sliding piece can possibly extend beyond the housing, 
which allows to space the locking members thusly from the housing that the 
door or the window is locked in the proximity of its upper side, lower 
side respectively. 
The guide can be obtained by means of at least one bearing block situated 
between the base and the closing plate or a guide fork protruding from the 
base and being open at the side remote of the base, or by at least a guide 
eye protruding from the base. 
The closure as described has the advantage over the known closures that the 
shaft of the operating member is properly supported which results in a 
long life time, an easy handling and ensures that no one sided load is 
applied to the housing of the closure.

DESCRIPTION OF PREFERRED EMBODIMENTS: 
FIG. 1 shows the housing 1 of the closure from which protrude the operating 
handle 2 and the locking members 3, 4 the latter being designed to 
cooperate with suitable recesses in a profiled member 5 which, for the 
sake of clarity, has not been prolonged up to the level of the housing 1. 
The housing is secured to a part of a door or window (not shown) by means 
of screws 6, 7 protruding through the housing. 
The housing consists of a profiled member, as a whole denoted by the 
reference numeral 8 in FIGS. 2 and 3, having an oblong base 9 and upright 
sides 10, 11. From the base 9 extends at least one guide, for a pinion 14 
with teeth 15, which is coupled to guide rings 17 via a central square 
hole 16 and the shaft (not shown) of the handle 2. The embodiment of FIG. 
2 shows two eyes 12, 13 between which the pinion 14 is confined. 
From sides 10, 11 protrude bridge parts 18 and 19 which merge into an 
arched guide part 20, 21 respectively continuing in a hook-shaped part 22, 
23 respectively turned towards the sides 10, 11 respectively. The 
hook-shaped parts 22 and 23 are located opposite corresponding ridges 24, 
25 on sides 10, 11, respectively. 
The inwardly directed faces of the guide parts 20, 21 constitute guide 
faces for the screws 6, 7, respectively on securing the closure to window 
or door. The spaces defined by parts 22, 24 on the one hand and parts 23, 
25 on the other hand serve to accommodate a securing member like a tack 
26, 27 by which the closing plate 28 is secured on the open front side of 
the section. The side of the section remote of the window or door is 
covered by a cover plate 29 being retained by screws 6, 7. 
In this embodiment the closing plate 28 is confined between the extensions 
30, 31 respectively of the sides 10 and 11, but another embodiment is 
possible in which the closing plate is elongated on either side of the 
housing; this embodiment is shown in FIG. 4. 
FIG. 4 shows the shape of the closing plate denoted by the reference 
numeral 28a. The closing plate is constructed with twice bent over edges 
29, 30 and 31, 32 respectively and an upright flange 32a, so that an 
additional securing, via this flange, to the window or door is possible. 
Confined between the edges 29, 30, 31, 32 is the sliding piece 33 
consisting of two oblong end edges, confined between the bent over edges 
29 . . . . 32, and a heightened central piece 34 carrying the locking 
members 3, 4. Each locking member comprises a shaft 3a, 4a, respectively, 
secured to the closing plate and a roller 3b, 4b, respectively encircling 
that shaft. An elongate hole 35 is provided in a piece 34 in which the 
back 36 of rack 37 closely fits. A rotation of the pinion 14 while the 
teeth 15 thereof are in mesh with rack 37 results in a movement in a 
longitudinal direction of the rack 37 and a corresponding movement of the 
locking members 3, 4. 
In the embodiment of FIG. 4 the locking members 3a, 4a are located at a 
considerable distance above, below, respectively the housing 1a of the 
closure. They cooperate with openings 38 and 39, in a section 40 secured 
to the doorcase, window frame, 41 respectively. 
The present closure has besides a very simple construction an extensive 
field of application and presents the particular advantage that most parts 
can be obtained from lengths of light metal or extruded synthetic 
sections. This applies also to the housing 8, the pinion 14, the rack 37, 
the closing plate 28 and the sliding piece 33. It is not necessary to 
machine finish the surface of those parts, while the manufacture and 
assembly are very simple and no skilled people are required therefor. 
FIGS. 5 and 6 show slightly modified embodiments of the housing which 
differ from the embodiments as described hereinbefore by the way in which 
the pinion is guided in the housing. Said FIGS. 5 and 6 show parts 
corresponding to those in the other drawings and therefore having the same 
reference numerals. 
In the embodiment of FIG. 5 at least one guide fork 44 protrudes from the 
base 9. A guide ring 45 is accommodated between the guide fork 44 and the 
closing plate 28 for rotatably receiving a ring 47 coupled to a pinion 46 
through which protrudes shaft 48 of a handle (not shown). The drawing 
shows a second guide fork 44a behind pinion 46. Fork 44 with its matching 
ring 45 can, however, be manufactured in such a width, that in combination 
with the guiding of the teeth in the closing plate, only one fork suffices 
to produce a sufficient guide. 
FIG. 6 shows an embodiment having an elongate recess 49 in the base 9 with 
at least one guide block 50 between base 9 and closing plate 28 which 
accommodates a guide ring 52 which is coupled to the pinion 51. Shaft 53 
of the operating handle (not shown) protrudes through said ring. 
If the block 50 has a sufficient width, only one guide block need be used. 
The drawing shows an embodiment with two guide blocks; the rear guide 
block is denoted by the reference numeral 50a. 
Naturally, means (not shown), for instance a retaining ring should ensure 
that the shaft 48, 53 respectively does not shift in a longitudinal 
direction. When a detachable retaining element is used one set of parts is 
sufficient for obtaining a closure with leftward or rightward rotation by 
inserting the shaft from the right side. 
The advantage of the embodiments of FIGS. 5 and 6 is the very convenient 
assembly of the same, as prior to the assembly of the complete closure the 
pinion with guide rings can be mounted on the shaft of the handle. Thus 
the combination can be put in place in the housing in one single 
operation. 
Moreover the embodiment of FIG. 6 presents the advantage that the housing 
can be manufactured by a minor number of operations.