US2575674A - Permutation lock - Google Patents

Permutation lock Download PDF

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Publication number
US2575674A
US2575674A US83548A US8354849A US2575674A US 2575674 A US2575674 A US 2575674A US 83548 A US83548 A US 83548A US 8354849 A US8354849 A US 8354849A US 2575674 A US2575674 A US 2575674A
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United States
Prior art keywords
tumblers
driver wheel
wheel
slide
fence
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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
Application number
US83548A
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English (en)
Inventor
Harry C Miller
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Individual
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Individual
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Priority to US83548A priority Critical patent/US2575674A/en
Priority to DES2731A priority patent/DE855368C/de
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Publication of US2575674A publication Critical patent/US2575674A/en
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    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B37/00—Permutation or combination locks; Puzzle locks
    • E05B37/08—Permutation or combination locks; Puzzle locks with tumbler discs on a single axis, all the discs being adjustable by a rotary knob which is not shifted for adjusting the discs
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B37/00—Permutation or combination locks; Puzzle locks
    • E05B37/0031—Locks with both permutation and key actuation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/70—Operating mechanism
    • Y10T70/7141—Combination and key
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/70—Operating mechanism
    • Y10T70/7153—Combination
    • Y10T70/7181—Tumbler type
    • Y10T70/7198—Single tumbler set
    • Y10T70/7237—Rotary or swinging tumblers
    • Y10T70/7243—Interset tumblers
    • Y10T70/7249—Tumblers released
    • Y10T70/7254—Fence held spaced from tumblers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/70—Operating mechanism
    • Y10T70/7153—Combination
    • Y10T70/735—Operating elements
    • Y10T70/7367—Tumbler structure and position
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/70—Operating mechanism
    • Y10T70/7153—Combination
    • Y10T70/7424—Tampering prevention or attach defeating

Definitions

  • Locksof the type commonly referred to as combination locks are, of course, verywell known. Also it is generally known that such locks depend for -their operation upon the alignment of .a plurality of elements in a preselected manner which permits the .operation of a bolt. 'These elements-are usuallyinthe form o'f discs, common- 'ly called tumblers., each of which is provided with a notch .or recess, calleda gate, the alignment lof thegate determining when the bolt .can be moved. 'It ⁇ is common for these ⁇ locks .to b e provided with three discs, .although more coul'd be used.
  • .An element called a ffence extends transversely across the edges of all .of .the ftumblers and :is adapted to drop into the gates when all of the gates in the tumblers are Vin alignment and when the driver wheel is manipulated to permit the fence to drop.
  • thefence is -held in such a position .that kit is slightly ⁇ spaced from the outer peripheries of all of .the tumblers.
  • thegatefof thenext highest tumbler ⁇ can be aligned with the -fence and, therefore, with the gate of the iirst tumbler and so on until the correct combinationis found and the security of thelock is broken.
  • the driver Wheel Furthermore, the 'special -gate can be opened 'only when this Adriver wheel gate is substantiallyaligned-with the-fence. This'avoids the defect of lthe'prior ⁇ devices that the driver 'wheel cannot 'be 1 turned -suciently to manipulate the tumblers when the'ga'te is open.
  • the Iprimary object ,or thepresentinvention is to providera combinationflockin which a'manipulation of the .dial will-not jgive any-indicationftf the position of thegates'in'anyof 'the'tumblers .
  • Another Objectis ⁇ to provide a combinationlock with ⁇ a driver wheel having'means for ⁇ selectively f closing thelgateinthe 'driverwheel'and for per# mitting rotation or the driver wheel ⁇ only when the gate is closed sothatthefence isheId-away from theperipheries ofthe tumblers.
  • Another yobject jis to provide -a combination lock in which .the driver Wheelcannotbe rotated to manipulate'thetumblers When'the driver .Wheel gate is open.
  • Another o bj ect vis lto l provide a combinationjlocl in which 'the ⁇ driver wheel ,cannot be -rotated to' manipulate the .tumblers when 'the driver 'Wheel gate 'is open and having interlocking means ⁇ be tween ⁇ the tumblers ,and thejfenee to prevent'the walking of the ,tumblers when the driver wheel gate is open.
  • Figure 1 is a vertical section on line I-i of Figure 2 of a loclrmade in accordance with the present invention
  • Figure 2 is the vertical section of Figure l.
  • Figure 3 is a Vpartial vertical section showing the parts of the lock in-a dierent position from that shown in Figure 2;
  • Figure 4 is a partial sectional view on line 4-4 of Figure 1;
  • Figure 5 is a partial sectional view on line 5'-5 of Figure 2;
  • Figure 7 is a View similar to Figure 6 showing the modified driver wheel in a diierent position
  • Figure 8 is an exploded perspective view of the modied driver wheel and gate closing means.
  • Figures 9 to 11 inclusive are partial views showing various positions of the key-operated gateclosing means and showing the relative positions of the fence; and y Figure l2 is a partial vertical section showing the engagement of the fence with one of the tumblers, near its gate.
  • the illustrative drawings show a conventional combination lock modied in such a manner as to permit the application of an embodiment of on line 2--2 the'present invention.
  • the conventional lock is
  • a casing I connected by a press t to a hollow sleeve 2 which projects through a door 3.
  • a plurality of tumblers 6, 1 and 8 are rotatably mountedon a cylindrical boss integral with the casing, the boss being substantially co-extensive with the sleeve 2.
  • a suitable escutcheon plate 9 Secured to the outer end of the sleeve 2 is a suitable escutcheon plate 9.
  • the casing is secured to the door 3 by the sleeve 2 and suitable screws.
  • a shaft II Inside the sleeve 2 is a shaft II, the inner end of which has rotatably iixed thereto a driver wheel I2, the opposite end of the shaft Il having a dial I3 xed thereto.
  • the dial and its hub constitute the means through which the tumblers 6, 1 and 8 of the combination lock are manipulated.
  • Each of the tumblers 6, 1 and 8 are of conventional construction and are divided in two parts, an inner part serving as a hub and an outer part having a suitable notch or gate 6a, 1a., and 8a, respectively, it being understood that all of the gates of the tumblers must be in proper alignment in order to operate the bolt of the lock.
  • Conventional means are provided for changing the relative position between the hub portion and the outer portion of the tumblers for the purpose of changing the lock combination.
  • Suitable xed washers having small detents which engage a recess 2a in the sleeve 2 are placed between the hubs of adjacent tumblers so that from the standpoint of mechanical friction each of the tumblers is completely isolated from the other.
  • One of such washers is indicated at I6.
  • flyer I1 Between one side of the washer and the next adjacent tumbler is a flyer I1 having an outwardly projecting detent I1a.
  • the annular portion of the flyer I1 serves as a spacer while the outwardly projecting detent I1a serves as an element through which one of the tumblers is driven by a laterally projecting detent on the next adjacent tumbler.
  • the driver wheel I2 is screw-threadedly secured to the shaft I I and a suitable key 2I is provided to lock the driver wheel in non-rotatable position on the shaft I I.
  • the driver wheel is provided with a lateral projection 22 which is adapted to engage the outwardly extending detent on the yer between it and the tumbler 8. It will be readily understood that when the dial I3 is rotated to rotate the driver wheel I2 that the projection 22 will drive the tumbler 8 and through the intermediate fiyer between the tumbler 8 and tumbler 1 the latter will be driven and so on, including the tumbler 6.
  • the gates Ba, 1a and 8a of the respective tumblers may be brought to register with each other in the well known manner when the proper combination is obtained by turning the knob I3 rst to the right, lining up the gate in one tumbler, then to the left lining up the gate in the second tumbler, and then to the right again lining up the third tumbler, and so on, ir" a lock with more than three tumblers is used.
  • the lock is provided with a bolt 23 which is adapted to slide in a suitable guide formed in the casing I, the bolt 23 being operated by a fencelever 24 pivotally attached thereto by a screw 26.
  • a suitable spring 30 is'provided for the purpose of urging the fence-lever 24 toward the tumblers.
  • the fence-lever 24 is provided with a laterally projecting arm, commonly referred to as a fence 21, which is adapted to engage the gates when the tumblers are in proper relative positions.
  • the driver Wheel I2 is also provided with a special gate I2a, the shape of which is complemental to the shape of a depending boss 28 on the fencelever 24. The lower point of the boss 28 normally rides on the outer periphery of the driver wheel I2.
  • the lock is provided With a suitable device to prevent tampering so that in the event that an attempt is made to drive the shaft I I inwardly toward the casing, the bolt 23 would be locked in position.
  • a suitable element 3l having an end portion 3Ia which engages the outer face of the upper tumbler 8 is provided.
  • is pivoted on screw 33 and is provided with a curved end 3Ib which partially encircles a locking pin 34 when the parts of the lock are in normal position.
  • the locking pin 34 is adapted to slide in a suitable guiding recess in the casing I and is provided with a C- shaped washer which engages a groove in the pin 34.
  • One side of the washer engages the curved end portion 3Ib of the element 3l and a suitable spring 31 is provided for normally urging the pin 34 in upward position where it could engage a notch in the underside of bolt 23.
  • the construction described so far is conventional.
  • the present inventional resides in the modification of the driver wheel I2 and certain other parts and the provision of a slide 43 Vwhich can be selectively controlled for closing the gate I2a in the driver wheel I2 so that a person not familiarwth the combination cannot manipuisqto'fthefcombination l ofthe lock. ":Io this end,
  • lThe-slide 43 comprises Jan-'arcuate portion 33a which has exactlythefsame radius as the 'remaining Lperipheral 'surface of fthe Ydriver 'wheel t2, 'itwo legs b and #13e Eand-asecon'd transverse portion 43d Jlziihg'ithe opposite vrends -of the legs.
  • the pinion 66 is xed tofa #shaft i41 "which -ex'tends through -a bore in tionalrconStruction-rotatablyimounted inthe hub 6T 'the fdial
  • arcuateboss 6U arcuateboss 6U is provided, "the edges 60a and 68h of which constitutefthe stops which'limit the rotationrof the driver Wheel whentheslide 43 is moved radially infsucha position'that 'theportion-il-d ofthe slide projects beyond .fthe router 'periphery ofthe driver wheel @M illtwill be seen that ivvhen the slide 43 is fin 'fthe withdrawn .position the driver wheel I21carm'0tbe lrotated sufficiently to .manipulate relative amount of limited rotation fthe :same
  • the lock 48 4does,'hovvever,addiareal measure of security Abecause -the :stops on the casing I'a permit rotation of the-driver wheel ⁇ I2 .only over a :limited are, and .-should ione be -able :to 'pick the lock 118anddropftheslidef43,:the driver wheel I2 l'cannot be rotated sufficiently to manipulate the-tumblers.
  • a :modified lform oit -the slide foperating .'nech-V anism is shown in - Figures 4'6,"1-1and18.
  • a special driver 'wheelf12 having -the usual gate 80,is provided with laterally-disposedundercut guides 12a and 112D.
  • ⁇ 'The -undercut :guides are adapted to receive the sides ofra l'-slide '13, theigeneral outside shape of which 4is similari/a the slide 43, previously fdescribed.
  • One lateral edgeof the slide - is provided with an elongated recess 13a which is adapted to ⁇ .permit limited relative movement with respect lto a lscrew A11i in the driver wheel 12.
  • a suitable recess 18 'in jthe Vlower end of the slide13 is adapted ⁇ to Vreceive 'a spring '19 tand the lloall 11.
  • the slide 13 is provided with an opening 83 of the peculiar shape shownin the drawings.
  • This opening 83 is adapted to cooperate With the slide cam 84 which is xed to the end of the shaft 41 by means of a flattened area 41a and a complementary D-shaped hole 81 in the cam.
  • the cam 84 is held on the end of the shaft 41 by means of the screw 88 which engages the end of the shaft.
  • the opening 83 comprises an arcuate portion which extends between points 98 and 9
  • is more or less immaterial so long as it clears the arcuate surface 84h.
  • the rectangular recess 92 is of sufcient extent in both dimensions as to accommodate the entrance of the tang portion 85 of the cam 84.
  • the slide cam 84 can be rotated in a clockwise direction and when the cam is rotated approximately ninety7 degrees the lower edge of the arcuate surface 84h will engage the underside of the notch 92 and the slide 13 will move toward the closed position.
  • the slide cam 84 in the clockwise direction, as shown in Figures 9 and l0, will cause the edge of the tang 85 to thereafter engage the underside of the notch 92 so that continued rotation will cause the slide to move toward the 8 surface 84a3just clears the corner edge of the notch 92.
  • Atthis pointztheslide .13 will be in the gate-closing position and the ball 11. will snap into the recess 16., thus holding the slide 13 ⁇ in that position.
  • the outer periphery of the tumblers are provided with continuous serrations
  • the boss 28 will prevent the fence from engaging the outer periphery of the tumblers and for purposes of illustration in the practical embodiment of the invention the fence 21 will be sepaced about one-thirty-second of an inchfrom the outer edge of the serrations in the tumblers.
  • the outer periphery of the driver Wheel 12 is provided with a relieved area 15 extending between the edge of the gate 88 and the slide 13.A 'I'he purpose of this relieved area is to provide clearance between the boss. 28 and the driver;
  • the construction is designed so that there will be a clearance of about one-sixty- ⁇ fourth of an inchbetween the boss 28 and the relieved area of the driver Wheel periphery. It will be seen from this that no manipulation of the driver wheel 12 will make it possible to walk the tumblers in an attempt to open the lock. The engagement between the serrations on the fence 21 and the peripheries of the tumblers will insure that the tumblers cannot be rotated by any..
  • Figure 12 illustrates the manner in which the seen that when the slide closes the gate thefence 21 will be spaced from the tumblers and.
  • a dog clutch could be provided so that normally' the shaft' 41 would rotate with Lthe dial I3, the dog ⁇ clutch being manually releasable so that the shaft 4'1 could be rotated independently ofthe shaft I'I- for the purpose of controlling the position of the gate.
  • a combination lock comprising selectively adjustable tumblers. each having a peripheral recess, a bolt, ⁇ a spindle having fixed thereto a driver wheel for adjusting' said tumblers, a lever pivotally connected to said bolt, said lever having a laterally extending fence adapted to lie transversely across the faces of the peripheries of said tumblers and said lever also having a portion adapted to lie over and engage the periphery of said driver wheel, said driver wheel havinga peripheral recess adapted to receive said portion of said lever to perm-it said fence to engage said tumbler recesses when the latter are adjusted to register with said fence for moving said bolt and interlock means normally preventing said fence from engaging said tumbler rer Clears during adjustment of the latter having actuating means selectively operative'following adjustment of said tumbler recesses into registry for rendering said interlock means inoperative to prevent interengagement of said fence and tumbler recesses.
  • a combination lock comprising a plurality of selectively adjustable tumblers each having a I6 peripheral recess, a bolt, spindle means having fixed thereto a driver wheel for adjusting said tumblers and lfor-actuating said bolt,v alever pivotally connected Ato, said .bolt and having tumbler-engaging fence and a driver wheel-engaging' portion, said driver Wheel having a peripheral recess adapted to receive said wheel-engaging portion of said lever when saidf recesses in said tumblers are adjusted to register with said fence, and means movably mounted on said driver wheel and intercoupled with said spindle means to be actuated therethrough for selectively bridging said peripheral recess said driver Wheel during adjustment-of said tumblers;
  • a combination lock comprising selectively adjustable tumbler wheels each having a recess in the periphery thereof, a bolt, spindle means having affixed thereto a driver wheel provided with a peripheral recess for adjusting said tumbler' wheels and. for actuating said bolt, a lever pivotally connected to said bolt and engageable with said driver wheel for actuating said bolt when said recessesl in said tumbler wheels are adjusted to register with said fence, and meansy movably mounted on said driver wheel and intercoupled with said spindle meansl to: be actuated therethrough for' selectively barring engagement of said lever with the peripheral recess of said driver' wheel. duringv adjustment of said tumbler Wheels andactuated through said intercoupling on registry of' said tumbler wheels to permit said lever to engage said driver wheel' peripheral recess.
  • a combination lock comprising.- selectively adjustable tumblers .each having a peripheral recess, a bolt, a. lever pivotedto said ⁇ bolt, spindleY means provided withy means for adjustingsaid wheels and for engaging saidflever. in one position for moving said bolt, said lever having a laterally extending; fence adapted to ⁇ lie transversely otthe peripheries of said tumblers andv adapted toengage the recesses insaid tumblers when thalatter are in registry and.
  • interlock means intercoupled through said spindle means normally preventing said fence from engaging said tumbler recesses during adjustment of the latter to establish the combination and actuated through said spindle means following alignment of said tumbler recesses to render the interlock means inoperative to bar interengagement of said tumbler recesses and fence.
  • a combination lock comprising selectively adjustable tumblers each having a peripheral recess, a bolt, a spindle having fixed thereto a driver wheel for adjusting said tumblers, a lever plvotally connected to said bolt, said lever having a laterally extending fence adapted to lie transversely of the peripheries of said tumbers and said lever also having a portion to lie over and engage the periphery of said driver wheel, said driver wheel having an annular peripheral portion and a relieved portion provided with a recess adapted to receive said portion of said lever to permit said fence to engage said tumbler rec es'ses when the latter are adjusted to register with said fence for moving saidvbolt, the peripheries of said tumblersfbeing provided-with a continuous series of serrations and said fence being provided with serrations adaptedv to engage the serrations on said tumblers, the relationship of the annular peripheral portion of said driver wheel and said portion on said lever being such that when said portion engages said annular portion of said Wheel the ser
  • a combination lock comprisingaplurality of Aselectivelyadjustable tumblers each having a peripheral recess, a bolt, a hollow spindle having -lfixed thereto a driver wheel for adjusting said tumblers and for actuating said bolt, a lever pivotally connected to said bolt and having a tumbler ⁇ engaging fence and a driver wheel engage ing portion, said driver wheel havinga .peripheral recess adapted to receive said wheel engaging portion when said -recesses in said tumblers are adjusted to register with said fence, a shaft extending through said spindle and means operably associated with said shaft for selectively bridging said peripheral recess in said driver wheel.
  • a combination lock comprising a plurality of selectively adjustable tumblers each having a peripheral recess, a bolt, a hollow spindle having iixed thereto a driver wheel for adjusting said tumblers and for actuating said bolt, a lever pivotally connected to said bolt and having a tumbler engaging fence and a driver wheel engaging portion, said driver wheel having a peripheral recess adapted to receive said wheel engaging portion when said recesses in saidtumblers are adjusted to register with said fence, said driver wheel having a bridging slide movable radially oi.'
  • said slide having an arcuate surface adapted to bridge said peripheral recess in said driver wheel, a shaft extending through said hollow spindle and means operably associated between said shaft and said slide for moving the ⁇ latter radially of said wheel.
  • 1l.-A combination lock comprising a casing adapted to be attached to a door, said lock comprising selectively adjustable tumblers each having a peripheral recess, a locking bolt, a spindle projecting from said casing and adapted to extend through said door, the outer end of said spindle having secured thereto a manually operable dial, the other end of said spindle hav- ⁇ ing nxed thereto a driver wheel for adjusting said tumblers and foractuating said bolt, a lever pivotally connected to said bolt and having a tumbler engaging fence and a driver wheel engaging portion, said driver wheel having a peripheral recess adapted to receive said wheel engaging portion of said lever when said recesses in said tumblers are adjusted to register with said fence, means for selectively bridging said peripheral recess in said driver Wheel, a shaft extending through said spindle and operably associated with said means for selectively bridging said recess in said driver wheel.
  • a combination lock comprising a casing adapted to be attached to a door, said lock comprising selectively adjustable tumblers eachhaving a peripheral recess, a locking bolt, a spindle projecting from said casing and adapted to extend through said door, the outer end of said spindle having secured thereto a manually operable dial, the other end of said spindle having fixed thereto a driver wheel for adjusting said tumblers and for actuating said bolt, a lever pivotally connected to said bolt and having a tumbler engaging fence and a driver wheel engaging portion, said driver wheel having a peripheral recess adapted to receive said wheel engaging portion of said lever when said recesses in said tumblers are adjusted to register with said fence, said driver wheel having a slide movable radially of said driver wheel, saidslide having an arcuate portion of the same radius as the outer periphery of said driver wheel and adapted to bridge said recess in said driver wheel when in one position, a shaft extending through said spindle, means operably associated

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US83548A 1949-03-26 1949-03-26 Permutation lock Expired - Lifetime US2575674A (en)

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Application Number Priority Date Filing Date Title
US83548A US2575674A (en) 1949-03-26 1949-03-26 Permutation lock
DES2731A DE855368C (de) 1949-03-26 1950-04-07 Kombinations-Schloss

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US83548A US2575674A (en) 1949-03-26 1949-03-26 Permutation lock

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US2575674A true US2575674A (en) 1951-11-20

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Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2722820A (en) * 1954-05-21 1955-11-08 Mendel E Coffey Combination lock
US2766606A (en) * 1952-06-06 1956-10-16 Milners Safe Company Ltd Combination lock
US2775115A (en) * 1950-12-29 1956-12-25 Mosler Safe Co Manipulation-resistant combination lock
US2775113A (en) * 1951-05-08 1956-12-25 Diebold Inc Combination locks
US2807954A (en) * 1954-07-06 1957-10-01 Harry C Miller Combination lock
US2884778A (en) * 1954-08-30 1959-05-05 Sargent & Greenleaf File cabinet combination lock
US2900813A (en) * 1957-07-05 1959-08-25 Harry C Miller Combination lock
US3077099A (en) * 1956-10-12 1963-02-12 James C Fitchett Modification of a dead-bolt relocking device for combination locks
US3170316A (en) * 1962-12-31 1965-02-23 Sargent & Greenleaf Combination lock construction
US3339383A (en) * 1965-06-25 1967-09-05 Sargent & Greenleaf Ring guard combination lock
US4106316A (en) * 1976-03-11 1978-08-15 Chubb & Son's Lock And Safe Company Limited Keyless combination locks
DE2908676A1 (de) * 1978-03-15 1979-09-20 Sargent & Greenleaf Permutationsschloss
USD268644S (en) 1980-11-05 1983-04-19 Sargent & Greenleaf, Inc. Combination lock fence lever with eccentric roller nose
US4596125A (en) * 1984-01-26 1986-06-24 C.G.V. S.A.S. Di Claudio Castiglioni & C. Combination lock
US4601504A (en) * 1984-04-23 1986-07-22 Major Lock, Corp. Safety mechanism for high security lock
US4694670A (en) * 1984-12-31 1987-09-22 Jang Young H Combined key and combination lock
US5493882A (en) * 1993-05-07 1996-02-27 Lockmasters, Inc. Drive apparatus and portable power source for computerized combination locks
US5592838A (en) * 1992-02-20 1997-01-14 Mas-Hamilton Group Anti-attack interlocks for a combination lock mechanism
US5881589A (en) * 1997-06-12 1999-03-16 Mas-Hamilton Group Gear driven bolt withdrawal for an electronic combination lock
US5893283A (en) * 1997-05-07 1999-04-13 Mas-Hamilton Group Solenoid controlled bolt control for an electronic lock

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE959978C (de) * 1953-02-01 1957-03-14 Hans Heimann Einknopf-Malschloss
DE1026656B (de) * 1953-06-20 1958-03-20 Harry C Miller Kombinationsschloss
DE1124389B (de) * 1958-12-23 1962-02-22 Sargent & Grennleaf Inc Kombinationsschloss
DE1182982B (de) * 1960-04-27 1964-12-03 Mosler Safe Co Schloss, insbesondere Kombinationsschloss

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US151184A (en) * 1874-05-19 Improvement in permutation-locks
US270114A (en) * 1883-01-02 Per mutation-lock
US477621A (en) * 1892-06-21 Half to frederick norris
US821548A (en) * 1904-10-01 1906-05-22 William Streeter Permutation-lock.
US1498802A (en) * 1921-04-15 1924-06-24 Mcrae Alexander Lock

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US151184A (en) * 1874-05-19 Improvement in permutation-locks
US270114A (en) * 1883-01-02 Per mutation-lock
US477621A (en) * 1892-06-21 Half to frederick norris
US821548A (en) * 1904-10-01 1906-05-22 William Streeter Permutation-lock.
US1498802A (en) * 1921-04-15 1924-06-24 Mcrae Alexander Lock

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2775115A (en) * 1950-12-29 1956-12-25 Mosler Safe Co Manipulation-resistant combination lock
US2775113A (en) * 1951-05-08 1956-12-25 Diebold Inc Combination locks
US2766606A (en) * 1952-06-06 1956-10-16 Milners Safe Company Ltd Combination lock
US2722820A (en) * 1954-05-21 1955-11-08 Mendel E Coffey Combination lock
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