US3858420A - Lock mechanism - Google Patents

Lock mechanism Download PDF

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Publication number
US3858420A
US3858420A US422434A US42243473A US3858420A US 3858420 A US3858420 A US 3858420A US 422434 A US422434 A US 422434A US 42243473 A US42243473 A US 42243473A US 3858420 A US3858420 A US 3858420A
Authority
US
United States
Prior art keywords
spring
spring arms
latch levers
lock mechanism
lock
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
Application number
US422434A
Other languages
English (en)
Inventor
Dwight L Sallis
Nathan L Berkowitz
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.)
ALBANY HARDWARE SPECIALTY Manufacturing Co Inc A CORP OF WI
Original Assignee
LOCK CORP OF AMERICA
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 LOCK CORP OF AMERICA filed Critical LOCK CORP OF AMERICA
Priority to US422434A priority Critical patent/US3858420A/en
Priority to CA212,529A priority patent/CA1003238A/en
Priority to GB5024174A priority patent/GB1460424A/en
Priority to DE19742455907 priority patent/DE2455907A1/de
Priority to IT7430089A priority patent/IT1026719B/it
Priority to JP49141250A priority patent/JPS5090497A/ja
Application granted granted Critical
Publication of US3858420A publication Critical patent/US3858420A/en
Assigned to ALBANY HARDWARE SPECIALTY MFG. CO. INC., A CORP. OF WI reassignment ALBANY HARDWARE SPECIALTY MFG. CO. INC., A CORP. OF WI ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: LOCK CORPORATION OF AMERICA
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S70/00—Locks
    • Y10S70/54—Double-ended spring
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S70/00—Locks
    • Y10S70/55—Unitary multiple springs
    • 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
    • Y10T70/50—Special application
    • Y10T70/5093—For closures
    • Y10T70/5097—Cabinet
    • Y10T70/5111—Projectable bolt
    • 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
    • Y10T70/7441—Key
    • Y10T70/7446—Multiple keys
    • Y10T70/7463—Master- and change-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
    • Y10T70/7441—Key
    • Y10T70/7486—Single key
    • Y10T70/7508—Tumbler type
    • Y10T70/7537—Rotary or swinging tumblers
    • Y10T70/7542—Single set
    • Y10T70/7548—Directly key engaged

Definitions

  • ABSTRACT A lock mechanism mounted in a casing including a bolt member slidably mounted in the casing for movement between lock and unlock positions.
  • a plurality of latch levers and at least one master lever are pivotally mounted in the casing by means of a pivot pin.
  • the latch levers engage and restrain movement of the bolt member when biased in one direction.
  • a spring means is provided for biasing the latch levers and master lever in one direction.
  • the spring means is of novel construction having a frame portion and a plurality of spring arms formed integrally therewith.
  • the spring arms are arranged in two banks with the spring arms of one bank extending towards and in staggered relationship with the spring arms of the other bank.
  • a key guide member is rotatably mounted in the casing to receive a key which when rotated will pivot the latch levers (or the masterlever) against the bias of the spring arms of the spring member to thereby move the latch levers out of restraining engagement with the bolt member.
  • the pivot pin is journaled in opposite walls of thelock casing and the master lever is fixedly secured to the pivot pin.
  • the primary object of this invention is to provide a lock mechanism which is economical to manufacture and provides a smooth and precise operation.
  • a lock mechanism mounted in a lock casing including a bolt member slidably mounted in the casing and a plurality of latch levers pivotally mounted in the easing and adapted to restrain movement of the bolt member when biased in one direction.
  • a spring means is provided for biasing the latch levers in said one direction.
  • the spring means is comprised of a spring member having a frame portion and a plurality of spring arms formed integrally therewith. The spring arms are arranged in two banks with the spring arms of one bank extending towards and in staggered relationship with the spring arms of the other bank so that adjacent latch levers are separately and independently biased by alternately staggered spring arms.
  • FIG. 1 is a perspective view of a flat key lock which embodies the structure of the present invention
  • FIG. 2 is an enlarged front view of the lock shown in DESCRIPTION OF THE PREFERRED EMBODIMENT
  • the lock mechanism of the present invention is mounted in a metal case 10 having a cover plate 12 and a pair of apertured attachment flanges l4, 14.
  • Case 10 also includes side walls l6, 18, 20, 22 and a rear wall 24.
  • the lock mechanism mounted in case 10 includes a bolt member 26 mounted for sliding movement adjacent the rear wall 24 of the case and is comprised of a plate portion 28, a locking nose portion 30 and a locking bar or lug 32 fastened to plate portion 28 and extending at right angles to the plane of plate portion 28.
  • Plate portion 28 is also provided with a key actuation slot 31, as shown in FIG. 2.
  • the lock mechanism further includes a plurality of latch members 34a, 34b, 34c, 34d, 34c and 34f, and a master lever 36'.
  • the latch and master levers are. mounted in a stacked relationship as best shown in FIG. 3,
  • Master lever 36 (FIG. 5) is mounted with a pressed fit on one end of a pivot pin 38 and latch levers 34a34 are freely pivotally mounted on the remaining portion of pin 38.
  • the entire sub-assembly of latch levers, master lever and'pivot pin is mounted in the case with the opposite ends 40, 40 of pin 38 journaled in openings 42, 42 in cover plate 12 and rear wall 24 of lock case 10. '1
  • a spring member 44 of novel design is provided to bias the latch and master levers (downwardly as shown in FIGS. 2 and 3) to their lock or unlock positions.
  • spring member 44 is of one piece construction comprising a frame portion 46 hav ing integral .end extensions 47, 47 providing an essentially C-shape configuration and .a plurality of curved spring arms 48a, 48b, 48c, 48d, 48c, 48f and 48g.
  • Spring arms 48a, 48c, 48c and 48g which form one bank of spring arms, extend from one end 47 of frame portion 46
  • spring arms 48b, 48d and 48f which form a second bank of spring arms, extend from the other end 47 of frame portion 46.
  • the spring arms of the two banks are staggered with respect to each other, i.e., they extend towards each other with the center lines of one bank of spring arms extending between the spring arms of the other bank and vice versa.
  • the free ends 49 of each spring arm are of reduced width to make sure that each spring arm will make contact with only a single lever.
  • spring member 44 it is important to note that in fabricating spring member 44 the metal between adjacent spring arms 48a -g is removed, leaving spaces 51 between adjacent spring arms. Such removal of metal between adjacent spring arms reduces the amount of undesirable stresses left in the spring arms due to the rupture of the metal in the manufacturing process as compared to a spring con struction wherein the spring arms are formed by slitting or drawing the material without removal of any metal. In the latter construction it is necessary to heat treat the material to stress relieve the spring. No such heat treatment operation is required in the manufacture of the spring member of the present invention.
  • spring member 44 is mounted in case 10 with the flat frame portion 46 and extensions 47 positioned flush against top wall 22 of the case with the spring arms thereon extending downwardly into contact with surfaces 50 and 52 of the master and latch levers.
  • each latch and master lever will be independently biased to its lock (or unlock position) by a singlespring arm.
  • spring arm 48a is in lbiasing contact with lever 34a
  • spring arm48b is in biasing contact with the next adjacent lever 34b
  • spring arm 48c is in biasing contact with next adjacent lever 34c
  • spring arm 48d is in biasing contact with next adjacent lever 34d
  • spring arm 48c is in biasing contact with next adjacent lever 348
  • spring arm 48f is in biasing contact with next adjacent lever 34f
  • spring arm 48g is in biasing contact with master lever 36.
  • spring member 44 is made of phosphorus bronze. Because of its structural configuration it lends itself to mass production techniques of manufacture such as a progressive stampingforming process.
  • master lever has a flat top surface 50 and latch levers have flat top surfaces 52 for uniform biasing engagement with the spring arms 48a-48g.
  • Master lever 36 has a cam surface 54 for actuation by a corresponding actuating surface on a master key (not shown).
  • the masterlever36 also has an actuator bar 58 which extends through aligned openings 60 in the latch members as best shown in FIG. 2.
  • Latch members 34a34f have cam surfaces 62 of varying configurations, each adapted for actuating contact with a corresponding actuating surface 64 on the shank of key 66 as best shown in FIG. 3.
  • the bolt member 26 is actuated by actuating surface 65 at the end of key 66 which is adapted to engage slot 31 in plate portion 28 as will be described in detail hereinafter.
  • Each of such latch members is also provided with a retaining slot 68 and a projecting lug 70 which cooperate with locking bar 32 on bolt member 26 to retain the bolt member in either lock or unlock position.
  • a key guide member 72 is rotatably journaled in a hollow boss 74 on cover plate 12 and an opening 76 in rear casing wall 24. As best shown in FIG. 1, the end of locking bar 32 extends into a guide slot 78 in cover plate 12 to provide a further guide means for the sliding movement of bolt member 26.
  • FIGS. 1 and 2 show the lock mechanism in unlock position.
  • key 66 is inserted into key guide member 72 and then rotated 180 counterclockwise.
  • actuating surfaces 64 on key 66 will engage cam surfaces 62 on latch levers 34a-34f causing said levers to be pivoted upwardly against the bias of spring arms 48a-48f of spring member 44 from the position shown in FIG. 2 to the position shown in FIG. 3.
  • Such upward pivotal movement of the latch levers to their release position will cause projecting lugs 70 thereon to move up and out of the travel path of locking lug 32 on bolt member 26.
  • the bolt member 26 will be retained in its lock position by projections 70 on latch levers 34a-34f, which as explained above will snap back behind locking bar 32 as the key is rotated to its fully lock position.
  • the key is rotated 180 clockwise.
  • the latch levers will again be actuated upwardly to their release position to thus allow surface 65 on the key to slide bolt 26 back to its unlock. position as shown in FIG. 2.
  • a master key When a master key is employed to actuate the lock, such key (not shown) is provided with an actuatingsurface adapted for actuating engagement with surface 54 on master lever 36. Actuation of master lever 36 against the bias of spring 48g will cause actuator bar 58 thereon to engage and actuate latch levers 34a-34f to release position to thus permit actuation of the bolt member 26.
  • each lever will be separately and independently spring loaded with an equal biasing force exerted on each lever.
  • a smoother more precise operation results, making it more difficult to actuate the lock other than by its corresponding pass key.
  • a lock mechanism mounted in a lock casing comprising:
  • a plurality of latch levers pivotally mounted in the casing and adapted to restrain movement of said bolt member when biased in one direction;
  • said spring means for biasing said latch levers in said one direction, said spring means comprising a spring member having a frame portion, a plurality of spring arms formed integrally therewith, said spring arms arranged in two banks with the spring arms of one bank extending towards and in staggered, relationship with the spring arms of the other bank.
  • each of said latch levers is separately and independently biased by a single spring arm of said spring member.
  • a lock mechanism according to claim 1 in which said latch levers are arranged in a stacked relationship with adjacent latch levers separately and independently biased by alternately staggered spring arms of said spring member.
  • a lock mechanism in which said frame portion of said spring member is positioned in such contact with one wall of the lock casing and said spring arms curving outwardly from the plane of said frame portion into contact with said latch levers.
  • a lock'mechanism according to claim 1 in which said frame portion of said spring'member has a pair of end extensions to provide an essentially C-shaped configuration with said spring arms of said spring member extending towards each other from said end extensions. 6.
  • a lock mechanism according to claim 5 in which the free ends of said spring arms are of a reduced width. 7.
  • a lock mechanism according to claim 1 in which there are spaces between adjacent spring arms of each bank of spring arms of said spring means.
  • a lock mechanism mounted in a lock casing comprising:
  • a bolt member slidably mounted in the lock casing and adapted for movement between lock and unlock positions;
  • a lock mechanism in which said pivot pin is journaled in opposite walls of said lock casing and said master lever is fixedly secured to said pivot pin.
  • each of said latch levers is separately and indepen- 6 dently biased by a single spring arm of said spring member.
  • a lock mechanism according to claim 8 in which said latch levers are arranged in a stacked relationship with adjacent latch levers separately and independently biased by alternately staggered spring arms of said spring member.
  • a lock mechanism according to claim 8 in which said frame portion of said spring member is positioned in such contact with one wall of the lock casing and said spring arms curving outwardly from the plane of said frame portion into contact with said latch levers.
  • a lock mechanism according to claim 8 in which said frame portion of said spring member has a pair of end extensions to provide an essentially C-shaped configuration with said spring arms of said spring member extending towards each other from said end extensions.
  • a lock mechanism according to claim 13 in which the free ends of said spring arms are of a reduced width.
  • a lock mechanism according to claim 8 in which there are spaces between adjacent spring arms of each bank of spring arms of said spring means.

Landscapes

  • Lock And Its Accessories (AREA)
  • Buckles (AREA)
US422434A 1973-12-06 1973-12-06 Lock mechanism Expired - Lifetime US3858420A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US422434A US3858420A (en) 1973-12-06 1973-12-06 Lock mechanism
CA212,529A CA1003238A (en) 1973-12-06 1974-10-29 Lock mechanism
GB5024174A GB1460424A (en) 1973-12-06 1974-11-20 Lock mechanisms
DE19742455907 DE2455907A1 (de) 1973-12-06 1974-11-26 Verriegelungsmechanismus
IT7430089A IT1026719B (it) 1973-12-06 1974-12-02 Congegno di chiusura montato in un corpo di serratura
JP49141250A JPS5090497A (it) 1973-12-06 1974-12-05

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US422434A US3858420A (en) 1973-12-06 1973-12-06 Lock mechanism

Publications (1)

Publication Number Publication Date
US3858420A true US3858420A (en) 1975-01-07

Family

ID=23674865

Family Applications (1)

Application Number Title Priority Date Filing Date
US422434A Expired - Lifetime US3858420A (en) 1973-12-06 1973-12-06 Lock mechanism

Country Status (6)

Country Link
US (1) US3858420A (it)
JP (1) JPS5090497A (it)
CA (1) CA1003238A (it)
DE (1) DE2455907A1 (it)
GB (1) GB1460424A (it)
IT (1) IT1026719B (it)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4259856A (en) * 1979-04-03 1981-04-07 Presto Lock Company, Division Of Walter Kidde & Company, Inc. Combination locks and dial-indexing spring therefor
US5560234A (en) * 1990-06-19 1996-10-01 Keith James Ross Lever lock
CN107117407A (zh) * 2017-07-03 2017-09-01 中车石家庄车辆有限公司 一种门端闭锁装置及集装箱笼架

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2129866A (en) * 1982-11-10 1984-05-23 Anslow Limited George Key operated lock
GB2380763A (en) * 2001-10-12 2003-04-16 Era Products Ltd Lock assemblies

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US16749A (en) * 1857-03-03 Mtjllee
US904860A (en) * 1908-04-29 1908-11-24 Yale & Towne Mfg Co Lock.
US3001392A (en) * 1958-02-20 1961-09-26 Philip J Brewington Lock with perforated plate moving with bolt

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US16749A (en) * 1857-03-03 Mtjllee
US904860A (en) * 1908-04-29 1908-11-24 Yale & Towne Mfg Co Lock.
US3001392A (en) * 1958-02-20 1961-09-26 Philip J Brewington Lock with perforated plate moving with bolt

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4259856A (en) * 1979-04-03 1981-04-07 Presto Lock Company, Division Of Walter Kidde & Company, Inc. Combination locks and dial-indexing spring therefor
US5560234A (en) * 1990-06-19 1996-10-01 Keith James Ross Lever lock
CN107117407A (zh) * 2017-07-03 2017-09-01 中车石家庄车辆有限公司 一种门端闭锁装置及集装箱笼架
CN107117407B (zh) * 2017-07-03 2020-12-11 中车石家庄车辆有限公司 一种门端闭锁装置及集装箱笼架

Also Published As

Publication number Publication date
GB1460424A (en) 1977-01-06
CA1003238A (en) 1977-01-11
IT1026719B (it) 1978-10-20
DE2455907A1 (de) 1975-06-12
JPS5090497A (it) 1975-07-19

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Legal Events

Date Code Title Description
AS Assignment

Owner name: ALBANY HARDWARE SPECIALTY MFG. CO. INC., HIGHWAY 1

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:LOCK CORPORATION OF AMERICA;REEL/FRAME:005652/0435

Effective date: 19901130