IE56333B1

IE56333B1 - Apparatus for locking a closure

Info

Publication number: IE56333B1
Application number: IE3087/84A
Authority: IE
Original assignee: Regent Lock Co Ltd
Priority date: 1983-12-05
Filing date: 1984-12-03
Publication date: 1991-06-19
Also published as: GB2150633A; GB2150633B; IE843087L; EP0144221A2; GB8332392D0; GB8430355D0; ATE55446T1; EP0144221B1; EP0144221A3; DE3482941D1

Abstract

Keepers 1 and 10 are mounted near a jamb of the door, in which jamb the leading edge of the door carrying handle/espagnolette gear is received to lock the door. Using the apparatus embodying the invention, the door can be locked in any one of three additional positions. This provides for the door to be locked open in different ventilating positions without having a sufficient gap between the leading edge of the door and the jamb to permit unauthorised entry. The door is merely slid to the required position and then the espagnolette rods are moved to engage in a desired one of the facing pairs 2, 11, depending on the ventilation gap required.

Description

Price Mp * The invention relates to apparatus for locking a closure, for exanple a door such as a french window or patio door which may he a sliding closure.

According to the invention there is provided apparatus for locking a sliding closure in any one of a plurality of positions, comprising facing keepers adapted for mounting on opposite frame parts of a frame for mounting the closure, each keeper having a plurality of facing means adapted to co-operate with slidable espagnolette rods, and lock means adapted to slide two espagnolette rods in opposite directions in order to engage with desired facing ones of the facing means.

Each keeper may comprise three facing means.

The facing means of one keeper may conprise parallel blind holes, which may be elongate, and the facing means of the other keeper may comprise three slots, each slot being aligned with a respective hole.

The lock means may comprise a toothed gear which engages with engagement means of the espagnolette rods.

The engagement means of each espagnolette rod may comprise a rack.

The slidable locking means may comprise a stud or studs, say two studs, the or each of which has an enlarged head for engagement with the keeper which comprises a plate with one or more key-hole shaped slots for receiving the or each stud and in one position Inching the head. i A - 2 lhe invention extends to a closure incorporatii< apparatus as hereinbefore defined.

Apparatus embodying the invention is hereinafter described, hy way of exasple, with reference to the accompanying drawings Figs. 1 to 3 ere respective plan, side elevational, and part sectional enlarged views of a keeper for a head and frame; Figs. 4 to 7 are respective plan, side elevational, end elevational and part sectional enlarged views of a keeper for a cill of a frame; Fig. 8 shows schematically a plan view of a lock with parts of the top plate removed to show the interior.

Figs. 9 and 10 show end elevational views of a gear of the lock of Fig. 8; and Fig. 11 shows a exploded perspective view of locking apparatus of a sliding door and a striker plate arrangement for the locking apparatus, according to the invention.

Referring to Figs. 1 to 3, the head keeper 1 comprises a cast metal plate with three discrete facing means in the form of three elongate blind holes 2 with rounded ends 3 which are substantially parallel. The keeper 1 has a rasp 4 inclined at 20* to provide for smooth passage of a closure, and countersunk holes 5 for receiving securing means such as screws whereby the keeper 1 can be secured to a head frame part of a frame in which a slidable closure such as a patio door is mounted for eliding movement.

Referring now to Fige. 4 to 7, the cill keeper 10 shcmn therein is similar to the head keeper 1 in that it conprises a cast metal plate with three discrete facing means in the form of three blind slots 11 with rounded ends 12, which slots 11 are substantially parallel. The keeper 10 has opposite rasps 13 inclined at 30° and inclined in opposite directions, at each end, and projection 14 with a base 15 which is inclined at 16®5’to the horizontal in order to conform to cill formation.

The holes 2 and slots 11 have identical widths, 9tam in the embodiment shown, and adjacent ones are separated by an identical distance, namely $nm in the esbodiamnt.

The facing means are facirxj*· in the sense that the keepers 1 and 10 are mounted opposite each other on respective head and cill frame parts of a frame in which a patio door is slidably mounted so that opposite pairs of holes and slots are aligned in the same vertical plane.

In use, the keepers 1 and 10 are mounted near a jasb of the door, in which janh the leading edge of the door carrying handle/eepagnolette gear is received to lock the door. Usir< the apparatus embodying the invention, the door can be locked in apy one of three additional positions. This provides for the door to be locked open in different ventilating positions without having a sufficient gap between the leading edge of the door and the jan& to permit unauthorised entry.

The door is merely slid to the required position and then the espagnolette rods are moved to eixgage in a desired one of the facing pairs 2, 11, depending on the ventilation gap required.

The espagnolette rods are locked by locking apparatus 20 as shown in Figs. 8-11.

The apparatus 20 has separate connectors 22 and 23 in the fora of racks which are adapted as at 24 for connection with ©spagaolette rods 25 and a slidable locking means in the fora of studs 26 in a housing 27 which studs 26 project from and are secured to the rack 22, so that when the racks move in the direction of the arrow X, the studs move too. The racks 22 and 23 are flat, stiff, metal strips with holes through then and are engaged with teeth of a means in the fonncf two parallel spaced, of Which one ia shown in Fig. 8, gears 28, which are turned in unison on insertion of a key in a key hole 29 of a lock 30, there being the usual differ pins (not shown) for operation by the key to permit turning of the lock, a projecting shaft 31 of which engages in a budk 32 to drive the gears 28 in unison, the gears being solid with the bush and each gear engaging in holes of both racks to drive same. lhe gear 28 and racks 22 and 23 are mounted between two plates one of which 33 is shown which is supported by housing 27« The housing 27 have grooves in which the racks sent and which act as guides therefor.

The housing includes a face plate 34 with spaced key-hole slots 35 through which heads of the studs 26 project, the enlarged parte of the slots 35 enabling the studs 26 to be passed through the face plate 34 ss the studs are smaller in diameter than Ute diameter of the enlarged parts (which are essentially circular). The narrower part of each key- . hole slob provides a' guide for a liad> 36 of each stud 26 which is connected to a respective rack 22 or 23« The locking arrangement 20 is set in a slot or recess in the leading .30 edge of the patio door with the face of the housing 27 and face plate 34 with the key-hole slots 35 flush with that edge, so that there is a gap between the rear faces (to the left in Fig. 11) of the heads of the studs 26 and the leading edge. A handle 37 with the key operated lock 30 is mounted on an inner face of the door adjacent the leading edge so that the shaft 31 engages the bush 32 for turning the gears 28, and hence for raising and lowering the studs 4 26, and espagnolette rods 25, in unison. There is also on the inside face of the door a dead lock 38 which ia essentially a slidable bolt which can be pushed under finger pressure to engage a hole of the upper rack to prevent operation of the whole locking mechanise. The door frame (not shown) includes a striker plate arrangement 39 set into a slot or recess so that key-hole slots 40 of a strike plate 41 of the arrangement are at the same vertical height as the key hole slots 35 in the face plate 34· The strike plate 41 lies over an intermediate plate 42 having elongate slots 43 which have a lateral extent at least as great as the diameter of the enlarged parts of the key hole slots 35, 40 and both plates 41 and 42 are secured to a base plate 44. The three striking plates 41, 42, 44 are adjustably secured together as fay adjustment screws 45, and the whole asaea&ly or arrangement 39 .is secured to the door frame by screws 46 passing through aligned holes 47« The arrangement is such that when the door is slid up to the frame in the fully closed position with the studs 26 in the lower, unlocked position, the studs pass through the enlarged parts of the key-hole stuped slots 40, and into the slots 43« When the key is turned (anticlockwise in Fig. 11) to lock the door shut the shafts of the studs 26 ride up the narrower parts of the key-hole slots 35 and 40 so that the heads of the studs 20 ride in the slots 43 and are held captive by the striker plate arrangement 39, the rear surfaces of the heads beir< caig^xt behind the parts of the striker plate 41 flanking the narrower parts of the two key-hole slots 40At the mane time, the racks 21 and 23 move away from one another so that the espagnolette rods 25 move upwardly and downwardly respectively to engage in tipper and lower keepers. ί The door is thus locked shut, liming the lock 30 clockwise (Hg· U) provides a reverse motion so the studs are aligned with the key hole slot enlargements, and the espa^iolette rods 25 are lowered and raised respectively out of engagement with their keepers. The door is thus unlocked, and can be slid away free the striker plate arrangement to open the door· When it is desired to lock the docs' open, It is merely necessary to align the nose or leading edge of the door with the keepers 1 and 10 so that the espagnolette rods 25 can engage in a desired facirtf pair of three pairs of holes 2 and slots 11 so that on insertion of the key and turning it anti-clockwise as viewed raises the rack 22 and lowers the rack 23 to throw* the connected espagnolette rods to engage in the respective head and cill keepers 1 and 10. On withdrawal of the key, the door is locked in the open position.

Hie apparatus thus has a four-point locking action.

Claims

1. Apparatus for locking a sliding closure in any one of a plurality of positions, comprising facing keepers adapted Q for mounting on opposite frame parts of a frame for mounting 5 the closure, each keeper having a plurality of facing means adapted to co-operate with slidable espagnolette rods, and lock means adapted to slide two espagnolette rods in opposite directions in order to engage with desired facing ones of the facing means. 10

2. Apparatus according to Claim 1, each keeper comprising three facing means.

3. Apparatus according to Claim 2, the facing means of the respective keepers being three espagnolette rod receiving apertures. 15

4. · Apparatus according to Claia 3, the facing means . of one keeper comprising substantially parallel blind holes, and the facing means of the other keeper comprising three slots, each slot being aligned with a respective hole.

5. · Apparatus according to Claim 4, the holes being 20 elongate.

6. Apparatus according to any preceding claim, the lock means being adapted to turn a toothed gear which engages with engBgrwnt means of the espagnolette rods.

7. · Apparatus according to Claim 6, the engagement means 25 df the each espagnolette rod comprising a rack.

8. Apparatus according to Claim 7, one rack carrying catch means for ei^agement with a keeper of a jamb of the f - 8 closure, whereby on movement of the gear the racks and catch means are moved in unison.

9. Apparatus according to Claim 8, the catch means comprising one or more studs, the or each of which has an enlarged head for engagement with one or more key-hole shaped slots for receiving the or each stud and in one position of the or each stud locking the or each head whereby to lock the closure.

10. Apparatus for locking a plurality of closures in any one of a plurality of positions, substantially as hereinbefore described with reference to the accompanying drawings.

11. A closure incorporating apparatus according to any preceding claim.