GB1577601A

GB1577601A - Locking arrangement for doors and the like

Info

Publication number: GB1577601A
Application number: GB24379/77A
Authority: GB
Original assignee: Individual
Current assignee: Individual
Priority date: 1976-06-21
Filing date: 1977-06-10
Publication date: 1980-10-29
Also published as: FR2355981A1; AU507947B2; DE2727601C2; DE2727601A1; SE7706607L; NL188418B; CA1065363A; FR2355981B1; JPS562866B2; BE855907A; IL49853A0; IL49853A; BR7704016A; AU2613877A; CH620494A5; NL188418C; SE422227B; JPS5317500A; ZA773461B; NL7706783A

Abstract

Locking rods (14a, 17) of the locking device having a cylinder lock can be advanced and retracted by means of a key. These locking rods are connected to the mechanism (8) of the cylinder lock via curved connection pieces (12) and a first toothed disk (9). A second toothed disk (10), which is also connected to this mechanism, rotates together with the first on a common shaft (11), until the locking rods are retracted completely. Only the second disk (10) can then still be rotated further by the key. The bolt (28) is thereby retracted via a lever (34). This bolt can also be displaced via a connection piece (41) by means of the pawl (3). By reason of this locking device, the door can be opened from inside either by means of the pawl (3) or by actuation of the cylinder lock when the cylinder lock is in the open position. <IMAGE>

Description

(54) A LOCKING ARRANGEMENT FOR DOORS & THE LIKE (71) We, ABRAHAM BAHRY and MOSHE DOLEV, both Israeli citizens, and both of 45, Sokolov Street, Cholon, Israel, do hereby declare the invention for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statements: The present invention concerns locks of the kind in which a toothed gear is mounted on the cylinder of a cylinder lock and is adapted, when turned by the key, to rotate a first wheel having a toothed section in mesh with the gear to displace, through the intermediary of curved links pivoted to the first toothed wheel, at least two locking bolts between a locking and an unlocking position.

This kind of lock will hereinafter be designated as a lock of the kind defined.

There is known a locking arrangement for doors and the like which comprises, in addition to the known latch bolt which is actuated by either the handle or any cylinder lock, at least one elongated locking bolt at an angle to said latch bolt and adapted to engage a side of the door opening other than that which the latch bolt engages, said locking bolt and said latch bolt being connected by means of curved links to a toothed wheel rotatable by a toothed gear, said gear being keyed on the cylinder of said cylinder lock, and being rotated therewith to lock the bolts.

An embodiment of the present invention seeks to improve said locking arrangement, providing in addition to a locking bolt on the side of the door opposite to that where the hinge is located, a separate latch bolt which may be actuated by the cylindrical lock when the locking bolt is retracted or by the handle of the door.

In this manner a more secure locking of the door will be assured, and furthermore when the cylindrical lock is in the unlocking position, the door may be opened from the inside by means of the handle or by actuating the cylindrical lock.

According to the invention there is provided a locking arrangement of the kind in which a toothed gear is mounted on the cylinder of a cylinder lock and is adapted, when turned by a key, to rotate a first wheel having a toothed section in mesh with the gear to displace, through the intermediary of curved links pivoted to the first toothed wheel, at least two locking bolts between a locking and an unlocking position characterised by the provision of a latch bolt, spring means operable to urge the latch bolt to the locked position, means operable to retract the latch bolt to the unlocked position, handle operated means operatively associated with the latch bolt retracting means to retract the latch bolt and a second wheel having a toothed section in mesh with the gear and operatively associated with the Latch bolt retracting means to retract the latch bolt when the locking bolts are in the unlocking position.

An embodiment of the invention will now be described by way of example, reference being made to the accompanying drawings, in which: Fig. 1 shows an elevational view of part of a locking arrangement which is destined to face the outside of a door in locking position, Fig. 2 shows a similar view, in mirror symmetry, of the part of the locking arrangement which is destined to face the inside of a door, Fig. 3 is an elevation of the side ledge of the locking arrangement at the longitudinal side of the door, Fig. 4 is a view similar to that of Fig. 1 showing the arrangement in unlocked position, Fig. 5 is a view similar to that of Fig. 2 and in mirror symmetry to Fig. 4, Fig. 6 is an elevation similar to that of Fig.

3, and Fig. 7 is a view similar to Fig. 5, illustrating the operation of the latch by the handle.

The locking arrangement comprises a housing made of two parts, part 1 facing the outside of a door (not shown) part 2 facing the inside. Through housing part 1 a handle shaft 3 biased by a spring arrangement 4, as known per se, extends as well as a keyhole 5 of a cylindrical lock generally indicated by 6.

Through housing part 2 only keyhole 5' extends.

The key (not shown) inserted into keyhole 5 or 5' from either side of the door rotates the cylinder 7 of lock 6. On said cylinder an actuating gear 8 is keyed which is in mesh with two registering toothed wheels 9 and 10 mounted on shaft 11. Both wheels 9 and 10 are provided with teeth over part of their periphery, the teeth being substantially in register as will hereinafter be explained in greater detail. To wheel 9 the inner ends of four curved links 12 are pivotally mounted at 13, at equal angular spacings. To the outer ends of links 12 three slotted linking bars 14 are pivotally mounted at 15, their outer ends being pivotally attached at 16 in locking bolts 17.The three locking bolts 17 extend to the three sides of the door, i.e., the top, bottom and the longitudinal side on which the door is hinged, while a fourth slotted linking bar 14a extends to the side opposite to the hinged side and is substantially in the form of a triangle having three short bolts 18 integrally mounted thereto and extending therefrom. Link 14a may, if desired, be shaped like links 14, and may be connected to one bolt only or, if desired, link 14a may have one or two bolts mounted only thereto.

Guides 19 which guide the movement of bars 14 and, at the same time, act as spacers between the two parts of the housing, are provided. Toothed wheel 9 is provided at its periphery with two cam depressions 20,20' which are adapted to be engaged by a cam follower 21 mounted on an arm 22 pivoted at 23 and urged by a spring 24 into depression-engaging position. The distance between the two depressions 20,20' corresponds to the limits of the angular movement of wheel 9. The teeth of wheel 9 are cut away at 25, so that only the teeth of tooth wheel 10 extend above this cut-away portion for a purpose which will become clear hereinafter.It can be seen from Figs. 1 and 4 that as cylinder 7 is rotated tooth wheel 9 will rotate likewise and will actuate locking bolts 18 into locking or unlocking position, roller 21 engaging in depression 20 in the locking position and in depression 20' in the unlocking position. Wheel 10 is likewise provided with a depression 20 of the same size as that of wheel 9 and with a depression 26 which is longer than depression 20'.

Wheel 9 furthermore is provided with part annular slots 27 through which pivots 13 extend, so that wheel 10 can rotate slightly relative to wheel 9.

According to the invention a latch bolt 28 is provided which is, as known per se, biased towards its extended locking position by a spring 29, two short springs 30 being provided to permit the withdrawal of the latch bolt and to permit it to be reversed so that it can be used for either left-hand or righthand door openings, as known per se. Latch bolt 28 is mounted at the end of a rod 31 which extends through a mounting plate 32 against which spring 29 abuts and has at its end a stop 33 attached thereto. The upper end of a lever 34 extending upwardly from an operating member 35 engages rod 31 between plate 32 and stop 33. Member 35 is pivoted at 36 to the housing and is provided with a nose 37 adjacent wheel 10. On wheel 10 a lug 38 is mounted which is adapted to engage nose 37 of operating member 35 as will hereinafter be explained.Operating member 35 is likewise provided with a window 39 into which engages a nose 40 at one end of a link 41 which is pivoted to the housing at 42, a lug 43 at the other end of link 41 being adapted to engage a nose 44 on a plate 45 integral with handle shaft 3.

The locking arrangement works as follows: As has been described with relation to wheel 9, wheel 10 is turned together therewith to achieve a locking position as shown in Figs. 1-3. When the lock is turned into unlocking position shown in Figs. 4-6 wheel 10 will rotate together with wheel 9. However, upon further turning gear 8, wheel 9 will remain in place because gear 8 will have ceased to be in mesh therewith owing to cut-away teeth 25, but wheel 10 will rotate further since its teeth are in mesh with gear 8. This further rotation, which is relative to wheel 9, is possible owing to slots 27 and depression 26 and causes lug 38 to engage nose 37 of member 35 whereby lever arm 34 retracts latch bolt 28. This position is shown in Fig. 7. If, however, in the position shown in Fig. 5, handle shaft 3 is actuated, nose 44 will engage lug 43 and cause link 41 to pivot operating member 35, so that latch bolt 28 can be retracted by the handle shaft 3.

The link 41 may alternatively be operatively connected directly with the rod 31 of the latch bolt, if desired.

It will be appreciated that the latch bolt 28 can at all times be operated by the handle, although the door would not open if locked by the locking bolts.

WHAT WE CLAIM IS: 1. A locking arrangement of the kind in which a toothed gear is mounted on the

**WARNING** end of DESC field may overlap start of CLMS **.

Claims

**WARNING** start of CLMS field may overlap end of DESC **. Fig. 6 is an elevation similar to that of Fig. 3, and Fig. 7 is a view similar to Fig. 5, illustrating the operation of the latch by the handle. The locking arrangement comprises a housing made of two parts, part 1 facing the outside of a door (not shown) part 2 facing the inside. Through housing part 1 a handle shaft 3 biased by a spring arrangement 4, as known per se, extends as well as a keyhole 5 of a cylindrical lock generally indicated by 6. Through housing part 2 only keyhole 5' extends. The key (not shown) inserted into keyhole 5 or 5' from either side of the door rotates the cylinder 7 of lock 6. On said cylinder an actuating gear 8 is keyed which is in mesh with two registering toothed wheels 9 and 10 mounted on shaft 11. Both wheels 9 and 10 are provided with teeth over part of their periphery, the teeth being substantially in register as will hereinafter be explained in greater detail. To wheel 9 the inner ends of four curved links 12 are pivotally mounted at 13, at equal angular spacings. To the outer ends of links 12 three slotted linking bars 14 are pivotally mounted at 15, their outer ends being pivotally attached at 16 in locking bolts 17.The three locking bolts 17 extend to the three sides of the door, i.e., the top, bottom and the longitudinal side on which the door is hinged, while a fourth slotted linking bar 14a extends to the side opposite to the hinged side and is substantially in the form of a triangle having three short bolts 18 integrally mounted thereto and extending therefrom. Link 14a may, if desired, be shaped like links 14, and may be connected to one bolt only or, if desired, link 14a may have one or two bolts mounted only thereto. Guides 19 which guide the movement of bars 14 and, at the same time, act as spacers between the two parts of the housing, are provided. Toothed wheel 9 is provided at its periphery with two cam depressions 20,20' which are adapted to be engaged by a cam follower 21 mounted on an arm 22 pivoted at 23 and urged by a spring 24 into depression-engaging position. The distance between the two depressions 20,20' corresponds to the limits of the angular movement of wheel 9. The teeth of wheel 9 are cut away at 25, so that only the teeth of tooth wheel 10 extend above this cut-away portion for a purpose which will become clear hereinafter.It can be seen from Figs. 1 and 4 that as cylinder 7 is rotated tooth wheel 9 will rotate likewise and will actuate locking bolts 18 into locking or unlocking position, roller 21 engaging in depression 20 in the locking position and in depression 20' in the unlocking position. Wheel 10 is likewise provided with a depression 20 of the same size as that of wheel 9 and with a depression 26 which is longer than depression 20'. Wheel 9 furthermore is provided with part annular slots 27 through which pivots 13 extend, so that wheel 10 can rotate slightly relative to wheel 9. According to the invention a latch bolt 28 is provided which is, as known per se, biased towards its extended locking position by a spring 29, two short springs 30 being provided to permit the withdrawal of the latch bolt and to permit it to be reversed so that it can be used for either left-hand or righthand door openings, as known per se. Latch bolt 28 is mounted at the end of a rod 31 which extends through a mounting plate 32 against which spring 29 abuts and has at its end a stop 33 attached thereto. The upper end of a lever 34 extending upwardly from an operating member 35 engages rod 31 between plate 32 and stop 33. Member 35 is pivoted at 36 to the housing and is provided with a nose 37 adjacent wheel 10. On wheel 10 a lug 38 is mounted which is adapted to engage nose 37 of operating member 35 as will hereinafter be explained.Operating member 35 is likewise provided with a window 39 into which engages a nose 40 at one end of a link 41 which is pivoted to the housing at 42, a lug 43 at the other end of link 41 being adapted to engage a nose 44 on a plate 45 integral with handle shaft 3. The locking arrangement works as follows: As has been described with relation to wheel 9, wheel 10 is turned together therewith to achieve a locking position as shown in Figs. 1-3. When the lock is turned into unlocking position shown in Figs. 4-6 wheel 10 will rotate together with wheel 9. However, upon further turning gear 8, wheel 9 will remain in place because gear 8 will have ceased to be in mesh therewith owing to cut-away teeth 25, but wheel 10 will rotate further since its teeth are in mesh with gear 8. This further rotation, which is relative to wheel 9, is possible owing to slots 27 and depression 26 and causes lug 38 to engage nose 37 of member 35 whereby lever arm 34 retracts latch bolt 28. This position is shown in Fig. 7.If, however, in the position shown in Fig. 5, handle shaft 3 is actuated, nose 44 will engage lug 43 and cause link 41 to pivot operating member 35, so that latch bolt 28 can be retracted by the handle shaft 3. The link 41 may alternatively be operatively connected directly with the rod 31 of the latch bolt, if desired. It will be appreciated that the latch bolt 28 can at all times be operated by the handle, although the door would not open if locked by the locking bolts. WHAT WE CLAIM IS:

1. A locking arrangement of the kind in which a toothed gear is mounted on the

cylinder of a cylinder lock and is adapted, when turned by a key, to rotate a first wheel having a toothed section in mesh with the gear to displace, through the intermediary of curved hnks pivoted to the first toothed wheel, at least two locking bolts between a locking and an unlocking position characterised by the provision of a latch bolt, spring means operable to urge the latch bolt to the locked position, means operable to retract the latch bolt to the unlocked position, handle operated means operatively associated with the latch bolt retracting means to retract the latch bolt and a second wheel having a toothed section in mesh with the gear and operatively associated with the latch bolt retracting means to retract the latch bolt when the locking bolts are in the unlocking position.

2. A locking arrangement according to Claim 1 wherein the first and second toothed wheels are mounted on a common shaft with the teeth of both wheels in mesh with the toothed gear during rotation of the first toothed wheel to actuate the locking bolts between the locking and unlocking positions.

3. A locking arrangement according to Claim 2 in which the teeth of the first wheel are cut away at one end of the toothed section to disengage the first wheel from the toothed gear upon rotation of the first wheel beyond the extent required to displace the locking bolts to the unlocking position whilst the teeth at the corresponding end of the toothed section of the second wheel remain in mesh with the toothed gear for rotation of the second wheel relative to the first wheel.

4. A locking arrangement according to Claim 3 in which the second wheel carries a lug operable to engage and operate the latch bolt retracting means during rotation of the second wheel relative to the first wheel.

5. A locking arrangement according to Claim 4 in which the latch bolt retracting means comprises a pivotally mounted lever having one arm in the path of displacement of the lug and another arm operatively associated with a rod on which the latch bolt is mounted to displace the rod and retract the latch bolt when the lever is pivoted by the lug.

6. A locking arrangement according to any one of Claims 1 to 5 in which the latch bolt retracting means includes a link mounted for pivotal displacement by engagement with the handle operated means and means carried on the link and operable upon pivotal displacement of the link to retract the latch bolt.

7. A locking arrangement according to Claims 5 and 6 in which the means carried on the link is engageable with the rod on which the latch bolt is mounted to retract the latch bolt.

8. A locking arrangement according to Claims 5 and 6 in which the means carried on the link comprises a nose engaged in a window provided in said lever to pivot the lever and displace the rod to retract the latch bolt.

9. A locking arrangement in which one of the locking bolts extends in the same direction as the latching bolt and comprises a triangular plate from which three short bolts extend.

10. A locking arrangement constructed, arranged and adapted to operate substantially as herein described with reference to the accompanying drawings.