US3807203A - Latch mechanism for doors - Google Patents

Latch mechanism for doors Download PDF

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Publication number
US3807203A
US3807203A US00343404A US34340473A US3807203A US 3807203 A US3807203 A US 3807203A US 00343404 A US00343404 A US 00343404A US 34340473 A US34340473 A US 34340473A US 3807203 A US3807203 A US 3807203A
Authority
US
United States
Prior art keywords
bolt
latch
head
key
bolt head
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
US00343404A
Other languages
English (en)
Inventor
V Larsen
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.)
REX LAASE AND METALVAREFAB
Original Assignee
REX LAASE AND METALVAREFAB
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 REX LAASE AND METALVAREFAB filed Critical REX LAASE AND METALVAREFAB
Application granted granted Critical
Publication of US3807203A publication Critical patent/US3807203A/en
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
    • E05B55/00—Locks in which a sliding latch is used also as a locking bolt
    • E05B55/06—Locks in which a sliding latch is used also as a locking bolt the handle being disconnected
    • 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
    • Y10T70/5155—Door
    • Y10T70/5199—Swinging door
    • Y10T70/5372—Locking latch bolts, biased
    • Y10T70/5385—Spring projected
    • Y10T70/5389—Manually operable
    • Y10T70/5496—Freely movable external manipulator
    • 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
    • Y10T70/5155—Door
    • Y10T70/5199—Swinging door
    • Y10T70/5372—Locking latch bolts, biased
    • Y10T70/5385—Spring projected
    • Y10T70/5389—Manually operable
    • Y10T70/55—Dogged bolt or connections

Definitions

  • the latch is readily suitable for left- 703,506 7/1902 Wahlberg .L 70/149 hinged and right-hinged doors. 547,007 10/1895 Frizelle 70/150 7 9/ 1932 2 Claims, 2 Drawing Figures Leeb 70/l50 Y I I l L/ 3 I8 I ll T 5 f M' 7 ti E 5 :2 j 1 l2 Iv Ii 2 I 1"! O 23" I ll' 1 a H I 5]?
  • the present invention relates to a latch mechanism for doors and of the type comprising a latch bolt provided with a head andslidingly mounted within a latch case formed with an opening in its face plate, and a latch tube pivotally mounted in said latch case and having an opening therethrough to accomodate a door handle, and means for actuating the latch bolt in such a manner that a turning movement of the latch tube will allow said latch bolt to be moved away from the face plate against the action of a projecting spring, and a key-responsive means adapted upon a turning movement of the key to be moved into a position where it will block the latch bolt in the projecting locked position of the bolt head and to move the latch bolt back into the retracted position of the bolt head independent of the latch tube.
  • Such a latch mechanism is-able to operate, in such a manner that it will meet the following three requirements:
  • the bolt head may be moved from the projecting position into its retracted position'by means-of the key.
  • a turning movement of the key for locking purposes will invariably lock the door, even if the bolt head assumes an intermediate position.
  • the known latch mechanism of this type suffers from the disadvantage that it is not readily suitable forlefthinged and right-hingeddoors. It is desirable, however, that a door latch of the subject type should be suitable for both types of door as this will result in substantial savings in costs both in manufacturing and storing doors, and also planning is facilitated due to the fact that only onetype of door is available.
  • latch bolt being divided into-two members, one of which carries the bolt head, said members being individually spring-biased towards the locking position andreleasably interconnected by means of a pivotal spring-biased coupling member, and by the latch tube being adapted to move the headless bolt member away from the face plate upon a turning movement in both directions, and by the pivot of the key-responsive means being located between the latch tube and the face plate and having an actuating means adapted to engage with the couplingmember to move it from a position in which it interconnects the two bolt members to a position in which said two bolt members 2 door, or vice versa, is turning the door handle 180 in the latch tube.
  • FIG. 1 illustrates the latch mechanism viewed from the side
  • FIG. 2 is the same with the latch in unlocked but closed position.
  • the latch mechanism comprises a latch case 1 with a face plate 2 having an opening in which is mounted a bolt head 3 on a bolt member 4 which is slidingly mounted in the latch case.
  • One bolt member 4 is actuated by a projecting spring 6, one arm of which actuates a shoulder on the bolt head 3, and the second bolt member 5 is actuated by a projecting spring 7 with two arms which actuate some projections 8 on the bolt member 5.
  • a latch tube 9 having an opening 10 therethrough for a door handle is pivotally mounted in the latch case 1,
  • the latch tube 9 has two arms 12 which are aligned and adapted to engage the projections 8 on the bolt member 5.
  • the two bolt members 4 and 5 are interconnectable by means of a coupling member 13 formed as a twoarmed lever mounted on a pin 14 of the bolt member 4.
  • One of the levers 15 is formed with a hook 16 adapted to engage a projection 17 on the boltmember 5.
  • the second arm 18 of the lever is adapted to abut a shoulder 19 on thebolt head 3 as has been shown in FIG. 1.
  • a means 21 responsive to a not ShOWl't key and having an arm 22 adapted to engage a recess 23 formed in the arm 18.
  • the bolt member 4 is provided with a projection 25 shown into a retracted position upon a turning movement of the latch tube by means of the not shown door handle. This turning movement will cause the upper arm 12 to be urged against the projection 8 to move'the bolt member 5 to the right against the action of the projecting spring 7.
  • the bolt member 5 is coupled with the bolt member 4 by means of the coupling member 13, and in this manner the bolt head 3 will be withdrawn into the latch case. This movement may be performed by turning the latch tube 9 in either direction, to thereby enable the latch to be turned upside down without difficulty.
  • the-latch may also be opened by means of the key as a turning movement of the means 21 and the arm 22 will cause the arm to be urged against the projection 25 on the bolt member 4 such that the latter and the bolt head 3 will be moved to the right against the action of the projecting spring 6.
  • the latch' is locked by the means 21 and the arm 22 being turned clockwise from the position shown in FIG. 2 into that shown in FIG. 1, whereby the arm 22 is moved into engagement with the arm 18 and will turn the coupling member 13 clockwise to release the hookshaped portion 16 from engagement with the projection 17 on the bolt member 5.
  • the latch tube 9 is freely pivotable in this locked position.
  • the spring 24 will move the coupling member 13 back to the position according to FIG; 2 in which the two bolt members 4 and are coupled together.
  • the upper surface of the hook-shaped portion 16 is formed so that said hookshaped portion cannot reach up in front of the projection 17 and thereby prevent the retracting movement thereof.
  • the latch may also be unlocked even if the door handle is turned downwardly as this will not change the mode of operation of the key-responsive means 21 and the arm 22.
  • a latch mechanism for doors and of the type comprising a latch bolt provided with a head and slidingly mounted in a latch case formed with an opening in its face plate, and a latch tube pivotally-mounted in said latch case and having an openingtherethrough to accomodate a door handle, and means for actuating the bolt back into the retracted position of the bolt head independent of the latch tube,'characterized in that the latch bolt in such a manner that a turning movement of the latch tube will allow said latch bolt to be moved away from the face plate against the action of a projecting spring, and a key-responsive means adapted upon a turning movement of the key to be moved into a position where it will block the latch bolt in the projecting locked position of the, bolt head and to move the latch latch bolt is divided into two members, one of which carries the bolt head, which members are individually spring-biased towards the locking position and releasably interconnected by means of a pivotal, springbiased coupling member, where said latch tube is adapted to move the headless bolt member away from
  • a latch mechanism characterized in that the pivot of the latch tube and that of the key-responsive means are rectilinear and coincide with the central and pivotal axis of the latch bolt, and that the latch tube has two arms which engage two projections formed on the headless bolt member, where the coupling member is composed of an angular lever mounted on the bolt member carrying the bolt head,.
  • the second arm of said'lever being formed so as to abut a shoulder provided on the bolt member carrying the bolt head and be urged thereagainst by an arm provided on the key-responsive means which is disposed in a notch formed in the bolt member carrying the bolt head, said arm being further adapted upon movement away from the locking position to engage a projection provided on the bolt member carrying the bolt head.

Landscapes

  • Lock And Its Accessories (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
US00343404A 1972-03-22 1973-03-21 Latch mechanism for doors Expired - Lifetime US3807203A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK135072AA DK134722B (da) 1972-03-22 1972-03-22 Fallelås til døre.

Publications (1)

Publication Number Publication Date
US3807203A true US3807203A (en) 1974-04-30

Family

ID=8103884

Family Applications (1)

Application Number Title Priority Date Filing Date
US00343404A Expired - Lifetime US3807203A (en) 1972-03-22 1973-03-21 Latch mechanism for doors

Country Status (9)

Country Link
US (1) US3807203A (fr)
BE (1) BE797140A (fr)
DE (1) DE2314390A1 (fr)
DK (1) DK134722B (fr)
FR (1) FR2177379A5 (fr)
GB (1) GB1402701A (fr)
NL (1) NL7304057A (fr)
NO (1) NO136686C (fr)
SE (1) SE389709B (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4146256A (en) * 1978-01-06 1979-03-27 Ellcon-National, Inc. Closure latch assembly
US4312202A (en) * 1979-12-28 1982-01-26 The Eastern Company Paddle lock with bolt-carried handle disconnect member
EP0173421A1 (fr) * 1984-08-21 1986-03-05 International Limited Uniqey Serrure pour porte
US8465062B2 (en) 2007-08-20 2013-06-18 The Eastern Company Armored vehicle door hardware providing access, egress, rescue and security
US11459796B2 (en) * 2020-04-06 2022-10-04 Uhlmann & Zacher Gmbh Latch module

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1570104A (en) * 1977-01-24 1980-06-25 Chubb & Sons Lock & Safe Co Key-operated locks
GB2173538A (en) * 1985-03-15 1986-10-15 Regent Lock Co Ltd A lockable handle apparatus
DE19649444C2 (de) * 1996-11-28 1999-07-15 Sphinx Elektronik Gmbh Schloß

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US49481A (en) * 1865-08-15 Improvement in locks
US67140A (en) * 1867-07-23 Balthasar seegmuller
US547007A (en) * 1895-10-01 Half to robert a
US703506A (en) * 1901-04-13 1902-07-01 Andres F Wahlberg Lock.
US1879350A (en) * 1931-08-06 1932-09-27 Leeb Frank Lock

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US49481A (en) * 1865-08-15 Improvement in locks
US67140A (en) * 1867-07-23 Balthasar seegmuller
US547007A (en) * 1895-10-01 Half to robert a
US703506A (en) * 1901-04-13 1902-07-01 Andres F Wahlberg Lock.
US1879350A (en) * 1931-08-06 1932-09-27 Leeb Frank Lock

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4146256A (en) * 1978-01-06 1979-03-27 Ellcon-National, Inc. Closure latch assembly
US4312202A (en) * 1979-12-28 1982-01-26 The Eastern Company Paddle lock with bolt-carried handle disconnect member
EP0173421A1 (fr) * 1984-08-21 1986-03-05 International Limited Uniqey Serrure pour porte
US4649725A (en) * 1984-08-21 1987-03-17 Uniqey International Ltd. Door lock
US8465062B2 (en) 2007-08-20 2013-06-18 The Eastern Company Armored vehicle door hardware providing access, egress, rescue and security
US8844982B2 (en) 2007-08-20 2014-09-30 The Eastern Company Armored vehicle door hardware providing access, egress, rescue and security
US11459796B2 (en) * 2020-04-06 2022-10-04 Uhlmann & Zacher Gmbh Latch module

Also Published As

Publication number Publication date
GB1402701A (en) 1975-08-13
NL7304057A (fr) 1973-09-25
SE389709B (sv) 1976-11-15
BE797140A (fr) 1973-07-16
DK134722C (fr) 1977-05-31
FR2177379A5 (fr) 1973-11-02
DE2314390A1 (de) 1973-09-27
NO136686B (fr) 1977-07-11
NO136686C (no) 1977-10-19
DK134722B (da) 1977-01-03

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