US1829938A - Door latch - Google Patents
Door latch Download PDFInfo
- Publication number
- US1829938A US1829938A US258072A US25807228A US1829938A US 1829938 A US1829938 A US 1829938A US 258072 A US258072 A US 258072A US 25807228 A US25807228 A US 25807228A US 1829938 A US1829938 A US 1829938A
- Authority
- US
- United States
- Prior art keywords
- tumbler
- key
- latch
- lock
- spring
- 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
- E05B55/00—Locks in which a sliding latch is used also as a locking 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
- Y10T70/50—Special application
- Y10T70/5093—For closures
- Y10T70/5155—Door
- Y10T70/5199—Swinging door
- Y10T70/5246—Dead bolts
- Y10T70/5296—Single
- Y10T70/5319—Sliding
-
- 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
- My invention relates to latches of the class .intended for bolting the doors of ordinaryor store-rooms, safes and the like, and adapted to be opened by means of a handle as (El, well as by key and wherein the latch is locked in the closed psition.
- the purpose of my invention is to produce a lock wherein by a suitable rotation of the key that causes the latch to move, the latter can be locked in the l@ closed position.
- This special purpose l reach by the -means specified below with reference to the accompanying drawings, in which liigs. l and 2 represent a view of the inside of the lockshown in the open position,
- Figs. 3 and l represent an inside view of the lock shown in the closed position, and a section on the line C-ll respectively, and
- Fig. 5 is a view of the key.
- the lock has a latch plate a with three bolts o rigidly secured on same and projecting out of the lock casing h.
- the latch plate is controlled by a spring d which tends to push it and the bolt c into the closed position shown.
- the latch may be retracted by means of a rod f provided with a knob e, when the tumblers g,
- tumbler g is kept in position by a spring o fitted on the lock-wall and having a beak 'm projecting into the notches n, or 'w of this tumbler, 'and the tumbler z' is kept in position by the vmutual pressure of these tumblers.
- middle tumbler L which is provided with a lower and an upper slot k remains., in known manner, with entire freedom to move and is unaiected by the spring .0. 'Ihe ward g ofthe key e (Flg. 5) is stepped for ⁇ coopera tion with the tumblers g," L, i.' When the key is withdrawn the tumbler h drops by its own weight into the lower position, thereby blocking theentry to the keyhole.
- the detent pin Z is free to move in the slot 7c when the latch a is shifted either by means of the rod or by means of the key, the bolts being The original locking position by the spring al whereby the plate a is controlled.
- the key is provided with a tapering front end portion y, which portion by inserting the key in the keyhole raises the tumbler 7L in such a 5l measure that the entry to the keyhole is open for the insertion of the key.
- the latch - can be retracted from within by pulling back the rod if and from withoutl by turning .the key and can be locked in the shot position by turning the key in the direction opposite to that which retracts the latch, the lock being thus secured against unwarranted opening.
- the front tumbler g possesses, advantageously a nose t, which projects into the gap p that admits the ward g'. rlihe ward bears with its respective step against the nose t and, by a ⁇ slight rotation of the key ward to the left', well over the keyhole width of the lock plate, (not shown in the drawings) moves the tumbler g from the position shown in Fig. 1 to that shown in Fig. 3. rlhe backs u of the tumblers place themselves in front of the pin Zand thus preventing a displacement of the pin Z in its open positionto secure the latch bolts in shot position.
- the tumblers i With the tumbler g. the tumblers i, are brought into the locking position by a :Eollower lv which is rigidly secured to the tum'- bler g and notched so as to allow the tumbler 7Lv to move.
- the tumbler g is retained in position by the spring o4 engaging in the notch fw, while the tumbler h which -is freely movable in the slot' of the U-shaped follower o drops by its own' weight into the lower position after the key has been removed from the keyhole and assists the other tumblers of the lock to ensure an effective locking of the latch plate as the tumbler k ater having vents the displacement of pin l by means of al nose u.
- a sliding latch bolt In a key operated latched lock, the combination of a sliding latch bolt, a spring acting on said latch bolt, hand-operated means to actuate said latch bolt, a plurality of spring-controlled tumblers co-operating with said' latch bolt adaptedto be actuated by a key, a tumbler loosely mounted in front 'of the key hole, adapted to position itself be- -fore the hole under its own wei ht, slots in said loose tumbler, a detent in said latch bolt adapted to enter said slots, a key operated, sprlng controlled front tumbler, a nose on said front tumbler, an arched follower rigidly connected t'o said front tumbler adapted to transmit the locking movement thereof to the said spring controlled tumblers.
Description
Nov. 3, 1931.
r1'. lKRoMEl-e nooR LATCH Filed Feb. 29. 192s Illini' 59 always automatically brought backto the4 Patented hier. 3, 1931* 'reo s'rnrss Parent olf-HCEV THEOIDOR XROMR, OF FREIBURG, IN BREISGAU, GERMANY, .ASSIGN'OR TO THEODOR nnoivrnn GESELLSCHAFT Mrr BESCHRNKTER nnnisoa'o, GERMANY" HAFTUNG, OF FREIBURG, IN'
DOOR LATCH Application med' February 29 1928, Serial No. 258,07a, and in Germany July 25, 1927.
My invention relates to latches of the class .intended for bolting the doors of ordinaryor store-rooms, safes and the like, and adapted to be opened by means of a handle as (El, weil as by key and wherein the latch is locked in the closed psition. The purpose of my invention is to produce a lock wherein by a suitable rotation of the key that causes the latch to move, the latter can be locked in the l@ closed position. This special purpose l reach by the -means specified below with reference to the accompanying drawings, in which liigs. l and 2 represent a view of the inside of the lockshown in the open position,
Vand a section on the line A--B respectively, Figs. 3 and l represent an inside view of the lock shown in the closed position, and a section on the line C-ll respectively, and
Fig. 5 is a view of the key.
According to the drawings, the lock has a latch plate a with three bolts o rigidly secured on same and projecting out of the lock casing h. The latch plate is controlled by a spring d which tends to push it and the bolt c into the closed position shown.
Against the action 'of the spring Z the latch may be retracted by means of a rod f provided with a knob e, when the tumblers g,
'30 it, i, with their longitudinal slots c register with the detent pin Z`(Figs. l and 2) which is rigidly secured to the latch. .'Ihe tumbler g is kept in position by a spring o fitted on the lock-wall and having a beak 'm projecting into the notches n, or 'w of this tumbler, 'and the tumbler z' is kept in position by the vmutual pressure of these tumblers.
middle tumbler L which is provided with a lower and an upper slot k remains., in known manner, with entire freedom to move and is unaiected by the spring .0. 'Ihe ward g ofthe key e (Flg. 5) is stepped for `coopera tion with the tumblers g," L, i.' When the key is withdrawn the tumbler h drops by its own weight into the lower position, thereby blocking theentry to the keyhole. The detent pin Z is free to move in the slot 7c when the latch a is shifted either by means of the rod or by means of the key, the bolts being The original locking position by the spring al whereby the plate a is controlled. The key is provided with a tapering front end portion y, which portion by inserting the key in the keyhole raises the tumbler 7L in such a 5l measure that the entry to the keyhole is open for the insertion of the key. By setting the 1 ltumblers g, z' or by displacing the latch plate by means of the ward g of the key shown in broken lines in lFig.l 3, entering into a gap r of a follower disc `s which is in engagement with the latch plate a the centre tumbler t is raised by the .key-ward until the lower slot k comes opposite the pin Z allowing the horizontal displacement of the latter. Thus the latch -can be retracted from within by pulling back the rod if and from withoutl by turning .the key and can be locked in the shot position by turning the key in the direction opposite to that which retracts the latch, the lock being thus secured against unwarranted opening. For this purpose, the front tumbler g possesses, advantageously a nose t, which projects into the gap p that admits the ward g'. rlihe ward bears with its respective step against the nose t and, by a` slight rotation of the key ward to the left', well over the keyhole width of the lock plate, (not shown in the drawings) moves the tumbler g from the position shown in Fig. 1 to that shown in Fig. 3. rlhe backs u of the tumblers place themselves in front of the pin Zand thus preventing a displacement of the pin Z in its open positionto secure the latch bolts in shot position. A
With the tumbler g. the tumblers i, are brought into the locking position by a :Eollower lv which is rigidly secured to the tum'- bler g and notched so as to allow the tumbler 7Lv to move. The tumbler g is retained in position by the spring o4 engaging in the notch fw, while the tumbler h which -is freely movable in the slot' of the U-shaped follower o drops by its own' weight into the lower position after the key has been removed from the keyhole and assists the other tumblers of the lock to ensure an effective locking of the latch plate as the tumbler k ater having vents the displacement of pin l by means of al nose u. Y
I claim:
In a key operated latched lock, the combination of a sliding latch bolt, a spring acting on said latch bolt, hand-operated means to actuate said latch bolt, a plurality of spring-controlled tumblers co-operating with said' latch bolt adaptedto be actuated by a key, a tumbler loosely mounted in front 'of the key hole, adapted to position itself be- -fore the hole under its own wei ht, slots in said loose tumbler, a detent in said latch bolt adapted to enter said slots, a key operated, sprlng controlled front tumbler, a nose on said front tumbler, an arched follower rigidly connected t'o said front tumbler adapted to transmit the locking movement thereof to the said spring controlled tumblers.
THEODOR KROMER.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1829938X | 1927-07-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
US1829938A true US1829938A (en) | 1931-11-03 |
Family
ID=7745107
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US258072A Expired - Lifetime US1829938A (en) | 1927-07-25 | 1928-02-29 | Door latch |
Country Status (1)
Country | Link |
---|---|
US (1) | US1829938A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4958508A (en) * | 1989-10-30 | 1990-09-25 | Lin Emily M Y | Double hook-bolt mortise lock |
US20070245781A1 (en) * | 2004-08-09 | 2007-10-25 | Shmulik Landau | Bolt Design |
-
1928
- 1928-02-29 US US258072A patent/US1829938A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4958508A (en) * | 1989-10-30 | 1990-09-25 | Lin Emily M Y | Double hook-bolt mortise lock |
US20070245781A1 (en) * | 2004-08-09 | 2007-10-25 | Shmulik Landau | Bolt Design |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US1968285A (en) | Doorlatch | |
US3115028A (en) | Combination lock | |
US2229909A (en) | Lock for overhead doors | |
US417589A (en) | Sash-fastener | |
US1829938A (en) | Door latch | |
US1364757A (en) | Lock | |
US2427281A (en) | Emergency lock release | |
US2452151A (en) | Chain and lock mechanism | |
US2242133A (en) | Safety master lock | |
US1136067A (en) | Interchangeable-key lock. | |
US1567811A (en) | Doorlock | |
US717855A (en) | Lock. | |
US718002A (en) | Keyless lock. | |
US913459A (en) | Lock. | |
US1681416A (en) | Padlock | |
US1555830A (en) | Lock | |
US1989137A (en) | Lock | |
US2690665A (en) | Cylinder lock | |
US1961483A (en) | Lock | |
US1553532A (en) | Latch and lock for doors | |
US1448283A (en) | Safety lock | |
US162423A (en) | Improvement in locking-latches | |
US1253734A (en) | Burglar-proof spring-lock. | |
US1604106A (en) | Handle lock | |
US1946551A (en) | Locking mechanism for doors |