EP0111363A2 - Serrure réajustable - Google Patents

Serrure réajustable Download PDF

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Publication number
EP0111363A2
EP0111363A2 EP83201693A EP83201693A EP0111363A2 EP 0111363 A2 EP0111363 A2 EP 0111363A2 EP 83201693 A EP83201693 A EP 83201693A EP 83201693 A EP83201693 A EP 83201693A EP 0111363 A2 EP0111363 A2 EP 0111363A2
Authority
EP
European Patent Office
Prior art keywords
key
tumblers
levers
lock
engaging elements
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP83201693A
Other languages
German (de)
English (en)
Other versions
EP0111363A3 (fr
Inventor
Anthonie Van Doorn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chubb Lips Nederland BV
Original Assignee
Chubb Lips Nederland BV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chubb Lips Nederland BV filed Critical Chubb Lips Nederland BV
Publication of EP0111363A2 publication Critical patent/EP0111363A2/fr
Publication of EP0111363A3 publication Critical patent/EP0111363A3/fr
Withdrawn legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B21/00—Locks with lamelliform tumblers which are not set by the insertion of the key and in which the tumblers do not follow the movement of the bolt e.g. Chubb-locks
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B35/00—Locks for use with special keys or a plurality of keys ; keys therefor
    • E05B35/08—Locks for use with special keys or a plurality of keys ; keys therefor operable by a plurality of keys
    • E05B35/083—Locks for use with special keys or a plurality of keys ; keys therefor operable by a plurality of keys with changeable combination
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B21/00—Locks with lamelliform tumblers which are not set by the insertion of the key and in which the tumblers do not follow the movement of the bolt e.g. Chubb-locks
    • E05B21/003—Locks with lamelliform tumblers which are not set by the insertion of the key and in which the tumblers do not follow the movement of the bolt e.g. Chubb-locks comprising tumblers moving in opposite directions, e.g. tumbler sets on opposite sides of the keyhole for operation by a double-bit key

Definitions

  • This invention relates to change-key locks, by which we mean key-operated locks having provision for reprogramming of the key-recognition mechanism to pass differently-coded keys, without requiring the replacement of the key-recognition elements. These locks may find useful application in various contexts.
  • a change-key lock of which the key-recognition mechanism comprises a set of movable tumblers and a set of levers or other movable key-engaging elements each one of which is normally in driving engagement with a respective said tumbler; the key-engaging elements and tumblers normally being biased to positions in which the tumblers block the retraction of a bolt or other locking member but the tumblers being drivable by the respective key-engaging ) elements to unlocking positions in which they permit such retraction, when the key-engaging elements are moved by a correct key; wherein the tumblers are borne relative to the key-engaging elements such that the tumblers can be withdrawn from such elements to break said driving
  • Such a lock thus can be reprogrammed by withdrawing the tumblers from the key-engaging levers or the like elements, after the tumblers have been set into their unlocking positions by use of the correct key, and then re-engaging the tumblers and key-engaging elements with the latter set in new relative positions by engagement with the new key which it is desired to pass, such positions being those to which the new key will set the key-engaging elements to achieve unlocking during subsequent use of the lock.
  • FIG. 1 there is illustrated a change-key lock in accordance with the invention which may be used eg for locking the boltwork of a safe or vault door.
  • This lock has a reciprocable bolt (seen also in Figure 4) which includes a head 1 secured to a plate 2, with two elongate stumps 3A, 3B upstanding from the plate behind the head. Movement of the bolt between its illustrated thrown position and a withdrawn position is controlled by a double-bitted key 4 (shown in Figure 5) as will be described below.
  • the lock is equipped with two packs of levers 5A, 5B pivoted on respective pins 6A, 6B and biased towards their illustrated rest positions by respective springs 7A, 7B.
  • Each lever has a sector of gear teeth 8A,8B which normally mesh with the complementary teeth 9A,9B of a respective member of two sets of rotary tumblers (hereinafter called "rotors") 10A,10B borne on respective pins 11A,11B.
  • rotors rotary tumblers
  • the two bits 14A,14B of the key 4 are of different heights, bit 14B being the taller.
  • Each bit has a series of steps 15A,15B to cooperate with the (equal) bellies 16A,16B of the levers 5A.5B respectively, and the taller bit 14B has an additional step 17 for throwing and withdrawing the bolt.
  • the key is inserted into the lock from the near side as viewed in Figures 1 to 3, in the "quarter to three" position and with the taller bit 14B to the left.
  • the cover plate of the lock (omitted from the drawings) embodies a key aperture complementary to the cross-section of the bitted end of the key so that the key can only be inserted into, and removed from, the lock in this single orientation.
  • the end of the key stem also has an axial bore 18 which fits over a fixed guide pin 19 in the lock as the key is inserted.
  • a barrel element 20, (the purpose of which is to act as a further guide for the key and to shield the lever bellies 16A, 16B from reading) is borne rotatably around the pin 19, and has transverse slots to receive the two key bits 14A,14B.
  • a spring detent 21 ( Figure 3) is provided for the barrel element 20 to retain it in the "quarter to three" position except when being turned with the key.
  • the key is turned on the pin 19 in the clockwise direction.
  • the steps 15B of the taller bit 14B engage, lift and then release the levers 5A while the steps 15A of the shorter bit 14A engage, lift and then release the levers SB; at the same time the bolt step 17 of the key revolves freely in the central cut-out 22 of the bolt plate 2 (see Figure 4 - the axis of rotation of the key in relation to the bolt in this condition is indicated at X).
  • the bolt step 17 of the key engages a talon face 23 on the bolt plate ( Figure 4) to retract the bolt leftwards, in so doing the stumps 3A,3B sliding into the respective series of rotor notches 13A or 13B.
  • the bolt comes up against stops at the limit of its withdrawing movement with the key at an approximately "twenty to two" position, from which it is precluded from further clockwise movement by the engagement of its bolt step 17 with face 23.
  • the thus-retained key can only be removed after re-throwing and locking the bolt, by anticlockwise rotation of the key back to its insertion position.
  • its bolt stump engages another talon face 24 on the bolt plate ( Figure 4) to throw the bolt rightwards to its locking position, and the key bits 14A and 14B release the levers 5A and 5B respectively.
  • the angle through which an individual rotor 10A or 10B is turned to align its notch 13A or 13 B with the corresponding stump 3A or 3B to permit bolt- retraction is related to the angle through which the associated lever 5A or 5B is lifted by the key, or in other words to the height of the corresponding step 15A or 15B on the relevant key bit.
  • the reprogramming process involves the disengagement of the gear teeth of the levers 5A,5B and rotors 10A,10B, and their re-engagement in new relative positions.
  • the plate 12 carrying the rotor pivot pins 11A, 11B must be slid rightwards a short distance. Normally such movement is blocked by a fixed stump 25 engaging in the slot 26 of an auxiliary lever 27 ( Figure 3) which is pivoted on a pin 28 carried by the plate 12 and biased to the illustrated rest position by a spring 29.
  • the plate 12 can, however, be freed and shifted by use of an auxiliary "change" key 30, shown in Figure 6.
  • the change key 30 is first inserted through a keyhole 31 from the far side of the lockcase, and so that the stem portion 32 of this key ( Figure 6) extends into a hole 33 in the bolt plate 2; this action effectively locks the bolt against movement in either direction during the subsequent operations.
  • the existing operating key 4 is then inserted and turned on pin 19 in the clockwise (unlocking) direction as far as it will go. With the bolt now immovable, this key is stopped in an approximately "twenty-five past eleven" position when the bolt step 17 abuts the face 23 of the bolt.
  • the key 4 is then turned back anti-clockwise and removed from the lock, the rotors 10A, 10B remaining disengaged from the levers 5A,5B and engaged with the stumps 3A,3B.
  • the new key which it is desired that the lock should pass is inserted in place of the old key and turned clockwise as far as it will go.
  • This key is stopped by the face 23 in the same "twenty-five past eleven" position as before, with the levers 5A,5B appropriately lifted, the positions which the levers now adopt of course differing from those which were set by the previously-passed key to the extent that the steppings 15A,15B of the new key bits differ from those of the previous key.
  • the change key 30 is turned back anticlockwise and removed from the lock.
  • its bit 34 engages a talon face 38 on the plate 12 to shift that plate leftwards back to its normal operative position, in which it is locked by the stump 25 in the slot 26 when the change key finally releases the belly 35 and the lever 27 returns to its rest position under the bias of the spring 29.
  • the plate 12 carrying the rotors 10A,10B returns leftwards, I the gear teeth 8A/9A and 8B/9B of the levers 5A,5B and rotors 10A,10B are re-engaged and the rotor notches 13A, 13B are disengaged from the stumps 3A,3B.
  • each individual rotor notch 13A,,13B is now misalinged from the respective stump 3A,3B is the angle through which that rotor will be turned by the corresponding lever 5A,5B when lifted by the corresponding new key steps 15A,15B when the new key is subsequently used for unlocking.
  • each pack of levers 5A,5B a single additional lever 39A,39B is pivoted on the respective pin 6A,6B, and biased by a respective spring 40A,40B.
  • These are not provided with corresponding rotors 10 but are "conventional" levers in that each is provided with a racking slot 41A,41B which cooperates with an additional stump 42A or 42B upstanding from the bolt plate 2.
  • These levers normally act as an additional block on the movement of the bolt, but are lifted by steps 43A,43B of the key bits 14A and 14B ( Figure 5) to free the stumps 42A,42B for movement when the correct key is turned to throw or withdraw the bolt.
  • levers are not reprogrammed and the respective key steps 43A,43B are therefore of the same height for all keys. They also serve the purpose of preventing the change key 30 from being inadvertently turned back to reengage the rotors 10A,10 B with the levers 5A,5B at the point during the reprogramming sequence described above where the previous operating key 4 has been removed from the lock but before the new operating key is inserted.
  • a nose portion 44A,44 B of each lever is stopped against a square section 45A,45B at the base of the respective rotor pivot pin 11A,11B.
  • FIGS. 7 to 9 show another embodiment of the invention, in the form of a safe deposit box lock.
  • the bolt assembly of this lock is in two parts, one comprising a head 50 secured to a plate 51 which reciprocates in the forward part of the lockcase, and the other comprising a plate 52 which reciprocates immediately behind the plate 51.
  • plate 52 In order to withdraw the bolt head 50 from the illustrated thrown position plate 52 must first be shifted to the right followed by corresponding movement of the plate 51.
  • Plate 52 is normally deadlocked by two packs of rotary tumblers 53A and 53B which block the paths of respective stumps 54A and 54B upstanding from the plate.
  • the rotors 53A,53B which are borne on pins 55A,55B and provided with notches 56A,56B, are equivalent to the rotors 10A,10B previously described, and have gear teeth 57A,57B in mesh with corresponding teeth 58A,58B on respective members of two packs of levers 59A and 59B. These levers are pivoted on respective pins 60A,60B and biased to their illustrated rest positions by respective springs 61A,61B. To withdraw the plate 52 a double-bitted client key is inserted from the near side of the lock and turned on a fixed pin 62 in the clockwise direction.
  • the levers 61A,61B are accordingly lifted to turn the rotors 53A,53B into the positions in which their notches 56A,56B align with the stumps 54A,54B, and a bolt step on the key engages a talon face 63 on the plate ( Figure 8) to shift the plate rightwards and bring the stumps 54A,54B into the notches 56A,56B.
  • the plate 52 reaches the limit of its travel the key is stopped by its engagement with face 63, and retained in the lock.
  • the bolt 50/51 is normally deadlocked by a further pack of rotors 53C again equivalent to elements 10A and 10B which block the path of a stump 54C upstanding from the plate, these rotors being borne on a pin 55C and provided with notches 56C. They have gear teeth 57C in mesh with corresponding teeth 58C on a further pack of levers 59C, the latter being pivoted on a pin 60C and biased to their illustrated rest positions by springs 61C.
  • a single-bitted custodian key is inserted from the near side of the lock and turned on a fixed pin 64 in the clockwise direction.
  • the levers 61C are accordingly lifted to turn the rotors 53C into the positions in which their notches 56C align with the stump 54C, and a bolt step on the key engages a talon face 65 on the plate ( Figure 8) to shift the plate rightwards and bring the stump 54C into the notches 56 C .
  • the face 65 is cut away as shown in Figure 8 to release the key bit after the plate has been shifted, so that the custodian key can be removed from the lock after having turned through 180°, the custodian keyhole in the lock cover plate (not shown) being appropriately shaped to permit this.
  • the custodian key is inserted in the lock in the position whence it was removed, and turned anticlockwise through 180°. Its bolt step engages a ) talon face 66 on the plate 51 ( Figure 8) to shift the bolt leftwards, and when the key finally releases the levers 59C they return to their rest positions under the bias of springs 61C and misalign the rotors 53C to deadlock the plate.
  • the retained client key can now be turned back anticlockwise to its insertion position, in so doing its bolt step engaging a talon face 67 on the plate 52 ( Figure 8) to shift that plate leftwards, and when the key finally releases the levers 59A,59B they return to their rest positions under the bias of springs 61A,61B and misalign the 5 rotors 53A,53B to deadlock the plate.
  • This lock can be reprogrammed to pass both new client keys and new custodian keys.
  • the reprogramming process I involves the disengagement of the rotors 53A and 53B from the levers 59A and 59B (in the case of the client key) or the disengagement of the rotors 53C from the levers 59C (in the case of the custodian key) and subsequent re-engagement in different relative rotational positions.
  • the rotor pivot pins 55A and55B are carried by a reciprocable plate 72.
  • This plate is normally locked in its illustrated position by means of a stump 73 on the plate engaging in the slot 74 of a lever 75 pivoted on a fixed pin 76 and biased by a spring 77.
  • the plate 72 can, however, be freed and shifted to the left, to disengage the rotors 53A, 53B from the levers 59A, 59B, by means of a single-bitted change key inserted through a keyhole 78 from the far side of the lock.
  • the bolt assembly plate 52 is provided with a hole 79 ( Figures 7 and 8) into which the leading portion of the change key intrudes to lock that plate in place during the reprogramming process and the pivot pin plate 72 has two talon surfaces 80,81 and a stop surface 82 for engagement by the change key bit.
  • the change key is inserted to interlock the plate 52; the existing client key is inserted and turned clockwise to lift the levers 59A,59B and align the rotors 53A,53B, without moving the plate 52; the change key is turned anticlockwise to lift the lever 75 and shift the plate 72 to the left so that the rotors 53A,53B disengage from the levers 59A,59B and the notches 56A,56B slide over the stumps 54A, 54B; the existing client key is turned back anticlockwise and removed; the new client key is inserted and turned clockwise to set the levers 59A,59B in corresponding new lifted positions; the change key is turned back clockwise and removed to shift the plate 72 rightwards and release the lever 75, thus withdrawing the notches 56A, 56B from the stumps 54A,54B, reengaging the rotors 53A,53B with the levers 59,59B in their new positions, and relocking the plate 72; and the new
  • the lock components 72-82 which are provided to enable reprogramming for new client keys are duplicated for reprogramming the rotors 53C to pass new custodian keys, the corresponding components which are provided for the latter purpose being indicated by the reference numerals 72'-82' respectively.
  • the sequence of reprogramming for a new custodian key equates for that described above in respect of a new client key and description will not therefore be repeated in this respect.
  • additional abutments are provided for preventing return movement of the respective change keys during reprogramming, between removal of the previous operating key and insertion of the new one.
  • this function is provided by the nose 83 of the lever 68 dropping behind a square section 84 at the base of the pin 55C to block return movement of the plate 72'.
  • this function is provided by the nose 85 of an additional lever 86 pivoted on the pin 60B and biased by a spring 87, which drops behind a square section 88 at the base of the pin 55B to block return movement of the plate 72 (see Figure 8).
  • This lever 86 also normally provides an additional block on the movement of the bolt plate 52 when thrown, by virtue of the corresponding bolt stump 89 and racking slot 90.
  • the lock of Figures 1 to 3 can be modified for dual key operation, whereby it is required that two keys are used in succession (both turning on the same pin 19) to withdraw the bolt head 1.
  • the first-used key thus "deblocks" the lock and the second key can then be used for throwing and withdrawing the headed bolt plate.
  • This type of operation is useful eg in the case of a lock on the door of a bank vault, where a senior employee holding the first key deblocks the lock at the start of the day, other employees holding the second key can then use the lock during working hours, and the senior employee finally blocks the lock again at the end of the day.
  • the two sets of rotors 10A and 10B can also be reprogrammed separately, by splitting the plate 12 into top and bottom halves and duplicating the change keyhole 31, lever 27 and the other associated key change components.
  • the custodian and 5 client locking mechanisms could be provided in a "parallel” arrangement instead of the "series" arrangement illustrated if desired, in which case both the custodian and client lever packs are arranged on the same pivot axes and operated in succession by respective keys inserted through the same keyhole, whose bits are arranged to align with only that pack of levers to which the respective key is assigned. It is also envisaged to replace or supplement the custodian key-locking mechanism with a remotely-controlled electrically-actuated mechanism.

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  • Lock And Its Accessories (AREA)
EP83201693A 1982-12-09 1983-11-30 Serrure réajustable Withdrawn EP0111363A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8235159 1982-12-09
GB8235159 1982-12-09

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Publication Number Publication Date
EP0111363A2 true EP0111363A2 (fr) 1984-06-20
EP0111363A3 EP0111363A3 (fr) 1984-12-12

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EP83201693A Withdrawn EP0111363A3 (fr) 1982-12-09 1983-11-30 Serrure réajustable

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0268328A2 (fr) * 1986-11-08 1988-05-25 Mauer GmbH Serrure adaptable à plusieurs clés

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE322528C (de) * 1914-04-05 1920-07-01 S J Arnheim Fa Fuer verschiedene Schluessel einstellbares Sicherheitsschloss mit einstellbarem oder auswechselbarem Gesperre fuer die Zuhaltungen
DE389133C (de) * 1921-07-06 1924-01-26 Hans Hartlaub Auf verschiedene Schluesselbaerte einstellbares Sicherheitsschloss
DE737777C (de) * 1937-11-20 1943-07-23 Wenzel Kaspar Ing Schloss mit nur einem Schliesswerk und zweiteiligen umstellbaren Zuhaltungen
DE1703277A1 (de) * 1968-04-26 1972-05-10 Kromer Kg Theodor Schloss mit auf verschiedene Schluessel umstellbaren Zuhaltungen
US3978700A (en) * 1975-01-08 1976-09-07 Keystone Consolidated Industries, Inc. Safe deposit lock construction with changeable tumbler mechanism

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE322528C (de) * 1914-04-05 1920-07-01 S J Arnheim Fa Fuer verschiedene Schluessel einstellbares Sicherheitsschloss mit einstellbarem oder auswechselbarem Gesperre fuer die Zuhaltungen
DE389133C (de) * 1921-07-06 1924-01-26 Hans Hartlaub Auf verschiedene Schluesselbaerte einstellbares Sicherheitsschloss
DE737777C (de) * 1937-11-20 1943-07-23 Wenzel Kaspar Ing Schloss mit nur einem Schliesswerk und zweiteiligen umstellbaren Zuhaltungen
DE1703277A1 (de) * 1968-04-26 1972-05-10 Kromer Kg Theodor Schloss mit auf verschiedene Schluessel umstellbaren Zuhaltungen
US3978700A (en) * 1975-01-08 1976-09-07 Keystone Consolidated Industries, Inc. Safe deposit lock construction with changeable tumbler mechanism

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0268328A2 (fr) * 1986-11-08 1988-05-25 Mauer GmbH Serrure adaptable à plusieurs clés
EP0268328A3 (en) * 1986-11-08 1988-10-05 Mauer Gmbh Change-key lock change-key lock

Also Published As

Publication number Publication date
EP0111363A3 (fr) 1984-12-12

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