EP0558276B1 - Schloss mit schwingenden Zuhaltungen - Google Patents
Schloss mit schwingenden Zuhaltungen Download PDFInfo
- Publication number
- EP0558276B1 EP0558276B1 EP19930301328 EP93301328A EP0558276B1 EP 0558276 B1 EP0558276 B1 EP 0558276B1 EP 19930301328 EP19930301328 EP 19930301328 EP 93301328 A EP93301328 A EP 93301328A EP 0558276 B1 EP0558276 B1 EP 0558276B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bolt
- stump
- levers
- lock
- retraction
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B11/00—Devices preventing keys from being removed from the lock ; Devices preventing falling or pushing out of keys
- E05B11/06—Devices preventing keys from being removed from the lock ; Devices preventing falling or pushing out of keys for catching skeleton or incorrect keys
Definitions
- the present invention relates to locks and more particularly to lever locks.
- lever locks we mean locks of the well-known kind in which the key-recognition mechanism comprises a plurality of pivoted or slidable tumblers or detainers (the “levers”), each adapted in the normal locking condition of the lock to prevent retraction of the lock bolt by blocking a stump carried by the bolt, but each comprising a gate at a selected location to pass the stump.
- Each lever also has a surface, usually of arcuate form, (termed the “belly") adapted to be swept by a respective step of a correct key when the latter is turned in the lock, whereby to shift the levers to selected relative positions in which their respective gates in the levers become aligned with the bolt stump so as collectively to permit retraction of the bolt by passage of the stump through the aligned lever gates.
- a surface usually of arcuate form
- This special tumbler does not function as a normal lever in that it does not serve to block retraction of the bolt in the normal locking condition of the lock.
- the special tumbler which serves to block the bolt against retraction as well as extension, with the normal levers apparently playing no part.
- a lock comprising a bolt carrying a stump; a plurality of pivoted or slidable levers each adapted in the normal locking condition of the lock to prevent retraction of the bolt by blocking said stump but each comprising a gate at a selected location to pass said stump; each lever having a surface adapted to be swept by a respective step of a correct key when the latter is turned in the lock, whereby to shift the levers to selected relative positions in which their respective gates become aligned with said stump so as collectively to permit retraction of the bolt by passage of the stump through the aligned gates; the lock further comprising a trap member separate from the levers which is operable in response to a limited retraction of the bolt to block return extension of the bolt whereby if an incorrect key or like implement is turned in the lock it can become trapped therein; characterised in that one or more of the said levers are configured adjacent to their respective gates with respective formations complementary to the formation of said stump so that if shifted by a said
- the illustrated lock is intended for high security applications, e.g. for locking the door of a safe or strongroom.
- it has a casing 1 from which is extended and retracted the head 2 of a bolt 3.
- the plate-like tail 4 of the bolt has the usual talons or drive surfaces 4A,4B ( Figure 2) for engagement with the bolt step of the key bit when the latter is turned in the appropriate sense to extend or retract the bolt.
- a pack of, say, ten levers 5 (of which only the nearest one is seen in Figure 1) lying in the path of the bolt stump 6.
- the levers are pivoted on a pin 7 and biased in the anticlockwise sense (as viewed) to their locking positions by leaf springs 8.
- Each lever has a gate 9 in its leading edge, however, which can pass the stump 6 to permit retraction of the bolt when the levers are set to their unlocking positions by turning the correct key.
- the gates 9 in different levers will be located at different heights and the levers will all be lifted through the correct distances to align their gates with the stump 6 when the respective steps on the correct key bit sweep their bellies 10.
- the lock also includes a barrel-and-curtain member 11 borne for rotation transversely to the line of movement of the bolt and defining the turning axis for the key.
- the barrel part 12 has a longitudinal slot 13 of a width sufficient only to accommodate the bit of the key and in the normal locking condition of the lock is aligned as shown in Figure 1, to register with the leg portion of the corresponding keyhole in the cap (not shown) which closes the proximal side of the casing 1.
- the curtain part 14 is in the form of a disc at the proximal end of the barrel 12, immediately behind the keyhole, and has a slot 15 to pass the key bit when in register with the keyhole. This curtain will block passage of the key or any similar bitted instrument in either direction through the leg portion of the keyhole, however, whenever it is turned away from the illustrated position.
- the lock is of generally conventional form.
- it comprises an arrester member 16 in the form of a profiled plate located to one side of the pack of levers 5, in the same plane as the curtain 14, and which is borne for limited sliding movement parallel to the bolt 3 by means of two slots 17,18 engaging respectively over the pin 7 and over a pin 19 mounted to the bolt.
- the arrester 16 is held at the leftward extremity of its permissible movement (in the sense as viewed) with the bolt pin 19 at the leftward end of slot 18 and the trailing end of the arrester lying against the curtain 14. It is also held yieldably in this position by a detent spring 20.
- the purpose of the arrester 16 is fully explained in our copending United Kingdom patent application no.
- the illustrated lever 5 is provided with a set of so-called false notches 9B adjacent to its gate 9 and the facing edge of the bolt stump 6 is notched complementarily to enable the bolt to retract very slightly by interengagement of these notches when the lever 5 is lifted to two discrete levels apart from that which aligns its gate 9 with the stump 6.
- These formations serve to confuse attempts to feel the gate position by the use of picking tools, in known manner. They also come into play to fulfil an additional purpose in accordance with the present invention, however, together with the arrester 16 and an additional element 27 which shall be called herein a trap plate.
- the form of the trap plate 27 is more fully shown in Figures 5 to 7. It is a generally planar element with a profiled pocket 28 adjacent to which there is a tongue 29 bent up at an acute angle. There is also a bent up tag 30 and a bent down foot 31.
- This plate is pivoted on a pin 32 mounted to the arrester 16 and is biased in the clockwise sense (as viewed in Figure 1) by a spring 33 held around the pin 32 and between the tag 30 and a similar tag 34 on the arrester.
- the trap plate 27 adopts the illustrated position by abutment of its foot 31 with a shoulder 35 of the lock case 1 under the pressure of the spring 33.
- a peripheral edge 28A of the pocket 28 in the trap plate overlies a reduced-diameter end portion 19A of the bolt pin 19 which extends laterally from the plane of the arrester 16 and slightly displaces the forward end of the trap plate laterally away from the arrester.
- This slight tilting of the plate 27 out of true parallelism with the arrester 16 is accommodated in its pivoted connection, while the action of the spring 33 is to press the trap plate laterally against the pin end 19A in addition to its pivotal bias.
- FIG 8 Such a state of affairs is illustrated in Figure 8, in which a false key or other implement 36 in the barrel-and-curtain 11 has lifted the illustrated lever 5 to align its false notches 9B with the bolt stump 6 and will have also lifted all of the other, non-illustrated, levers to permit retraction of the bolt 3 to the depth of the notches 9B.
- This degree of retraction of the bolt is accomplished prior to any retraction of the arrester 16 by virtue of the lost-motion coupling between those elements as previously described, the detent spring 20 ensuring that the arrester is not displaced by friction with the bolt or through any other effect at this stage.
- the bolt pin 19 is moved rearwardly in relation to the trap plate 27 pinned to the arrester, so that its end portion 19A moves past the peripheral edge 28A of the pocket 28 and the plate 27 is allowed to snap against the side of the arrester, thereby trapping the pin end 19A in its pocket 28.
- the bolt 3 is blocked against return movement in the locking direction (leftward as viewed) since the pin end 19A abuts against the edge 28A of the trap plate pocket and the trailing end of the arrester 16, to which the trap plate 27 is connected, abuts against the curtain 14.
- the bolt is of course blocked against any further movement in the unlocking direction by the lever 5, which is itself prevented from falling by its interengagement with the bolt stump.
Landscapes
- Lock And Its Accessories (AREA)
- Gates (AREA)
- Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Claims (6)
- Schloß, bestehend aus einem eine Sicherung (6) tragenden Riegel (3), einer Vielzahl von schwenkbaren oder verschiebbaren Hebeln (5), von denen jeder dazu ausgelegt ist, um im normalen Verriegelungszustand des Schlosses durch Blockieren der Sicherung (6) eine Zurückbewegung des Riegels (3) zu blockieren, jeder jedoch einen Durchlaß (9) an einer ausgewählten Stelle zum Durchlaß der Sicherung (6) aufweist, jeder der Hebel (5) eine zum Überstreichen mit einer entsprechenden Stufe eines richtigen Schlüssels ausgelegte Fläche (10) aufweist, wenn letzterer im Schloß gedreht wird, um die Hebel (5) in ausgewählte Relativlagen zu versetzen, bei denen ihre entsprechende Durchlässe (9) in Flucht mit der Sicherung (6) kommen, um gemeinsam eine Zurückbewegung des Riegels (3) durch Hindurchlassen der Sicherung (6) durch die fluchtenden Durchlässe (9) zu ermöglichen, wobei das Schloß weiterhin getrennt von den Hebeln (5) ein Fallenteil (27) aufweist, welches in Abhängigkeit einer begrenzten Zurückbewegung des Riegels (3) betätigbar ist, um eine Zurückbewegung des Riegels (3) zu blockieren, wobei, falls ein falscher Schlüssel oder ein ähnliches Werkzeug (36) im Schloß gedreht wird, dieser bzw. dieses darin eingeschlossen wird, dadurch gekennzeichnet, daß einer oder mehrere Hebel (5) nahe ihren entsprechenden Durchlässen (9) mit entsprechenden Ausgestaltungen (9B) konfiguriert sind, die komplementär zur Ausgestaltung der Sicherung (6) sind, so daß, falls durch das Werkzeug (36) in entsprechende Stellungen versetzt, bei denen die Ausgestaltungen (9B) jedoch nicht die Durchlässe (9) dieser Hebel mit der Sicherung (6) fluchten, die begrenzte Zurückbewegung des Riegels (3) möglich, jedoch eine weitere Zurückbewegung des Riegels durch Eingriff der Sicherung (6) mit diesen Hebeln (5) verhindert ist, und diese Hebel (5) an einer Bewegung weg von den Stellungen, in welche sie durch das Werkzeug (36) gebracht wurden, durch ihren Eingriff mit der Sicherung (6) blockiert sind.
- Schloß nach Anspruch 1, bei dem eine erste Anzahl von Hebeln (5) mit entsprechenden Ausgestaltungen (9B) konfiguriert sind und eine zweite Anzahl von Hebeln ohne diese Ausgestaltungen konfiguriert sind, wobei die zweite Anzahl der Hebel in die entsprechenden Stellungen versetzt werden müssen, bei denen ihre Durchlässe (9) mit der Sicherung (6) fluchten, bevor die begrenzte Zurückbewegung des Riegels (3) stattfinden kann.
- Schloß nach Anspruch 1 oder 2, bei dem das Fallenteil (27) in Richtung einer Stellung zum Blockieren des Riegels (3) gegen dessen Rückbewegung vorgespannt ist, in der normalen Verriegelungsstellung des Riegels (3) das Fallenteil (27) durch vom Riegel (3) getragenen Anschlagsmitteln (19A) von seiner Blockierstellung weggehalten wird, das Fallenteil (27) durch diese Anschlagsmittel (19A) freigelassen wird, um in seine Blockierstellung sich zu bewegen, wenn der Riegel (3) über eine begrenzte Distanz zurückgezogen wird.
- Riegel nach Anspruch 3, welcher Mittel (29, 35) umfaßt, die das Fallenteil (27) in seiner weggeführten Stellung halten in Abhängigkeit von einer Bewegung des Riegels (3) durch einen richtigen Schlüssel von seiner entriegelten in seine verriegelte Stellung.
- Schloß nach einem der vorhergehenden Ansprüche, umfassend ein Trommelteil (11) zum Drehen mit einem richtigen Schlüssel und einem Fangteil (16), welches in der verriegelten Stellung des Riegels (3) das Maß begrenzt, mit welchem das Trommelteil (11) in der Lage ist, gedreht zu werden, das Fangteil (16) so mit dem Riegel (3) gelenkig verbunden ist, um in der verriegelten Stellung des Riegels (3) eine Verschiebung des Fangteils (16) zu verhindern, das Fangteil (16) jedoch durch Bewegung eines richtigen Schlüssels verschiebbar ist, wenn letzterer zum Zurückziehen des Riegels (3) in seine entriegelte Stellung gedreht wird, wobei ein anfängliches Zurückziehen des Riegels (3) zu einem Verschieben des Fangteils (16) führt.
- Schloß nach Anspruch 5, bei dem das Fallenteil (27) durch das Fangteil (16) getragen wird.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB929204134A GB9204134D0 (en) | 1992-02-26 | 1992-02-26 | Locks |
GB9204134 | 1992-02-26 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0558276A2 EP0558276A2 (de) | 1993-09-01 |
EP0558276A3 EP0558276A3 (de) | 1993-10-20 |
EP0558276B1 true EP0558276B1 (de) | 1996-09-18 |
Family
ID=10711105
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19930301328 Expired - Lifetime EP0558276B1 (de) | 1992-02-26 | 1993-02-23 | Schloss mit schwingenden Zuhaltungen |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0558276B1 (de) |
DE (1) | DE69304737T2 (de) |
GB (2) | GB9204134D0 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2308862A (en) * | 1996-01-03 | 1997-07-09 | Wealthsafe Ltd | Plate tumbler locks |
IT201600071113A1 (it) * | 2016-07-08 | 2016-10-08 | Giuseppe Scarparo | Serratura di sicurezza con chiave a doppia mappa perfezionata |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE147264C (de) * | ||||
DE112474C (de) * | ||||
DE539444C (de) * | 1930-03-05 | 1931-11-28 | Otto Diehr | Chubbschloss |
US2028171A (en) * | 1935-01-23 | 1936-01-21 | Bell Telephone Labor Inc | Lock |
US2028495A (en) * | 1935-01-23 | 1936-01-21 | American Telephone & Telegraph | Lock |
US2028525A (en) * | 1935-01-23 | 1936-01-21 | American Telephone & Telegraph | Lock |
GB541327A (en) * | 1940-02-15 | 1941-11-24 | Arthur Walter Bryan | Improvements in locks |
GB8926637D0 (en) * | 1989-11-24 | 1990-01-17 | Chubb Research | Locks |
-
1992
- 1992-02-26 GB GB929204134A patent/GB9204134D0/en active Pending
-
1993
- 1993-02-23 EP EP19930301328 patent/EP0558276B1/de not_active Expired - Lifetime
- 1993-02-23 DE DE1993604737 patent/DE69304737T2/de not_active Expired - Fee Related
- 1993-02-24 GB GB9303698A patent/GB2264531B/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE69304737T2 (de) | 1997-02-27 |
GB9303698D0 (en) | 1993-04-14 |
GB2264531B (en) | 1995-03-29 |
GB2264531A (en) | 1993-09-01 |
DE69304737D1 (de) | 1996-10-24 |
EP0558276A3 (de) | 1993-10-20 |
EP0558276A2 (de) | 1993-09-01 |
GB9204134D0 (en) | 1992-04-08 |
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