GB1185641A - Improvements in or relating to Door Latches - Google Patents
Improvements in or relating to Door LatchesInfo
- Publication number
- GB1185641A GB1185641A GB1100066A GB1100066A GB1185641A GB 1185641 A GB1185641 A GB 1185641A GB 1100066 A GB1100066 A GB 1100066A GB 1100066 A GB1100066 A GB 1100066A GB 1185641 A GB1185641 A GB 1185641A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bolt
- housing
- actuating member
- shaft
- latch
- 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
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
- E05C1/00—Fastening devices with bolts moving rectilinearly
- E05C1/08—Fastening devices with bolts moving rectilinearly with latching action
- E05C1/12—Fastening devices with bolts moving rectilinearly with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch
- E05C1/16—Fastening devices with bolts moving rectilinearly with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch the handle or member moving essentially in a plane substantially parallel to the wing or frame
- E05C1/163—Cylindrical or tubular latches
-
- 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
- Y10T292/00—Closure fasteners
- Y10T292/08—Bolts
- Y10T292/096—Sliding
- Y10T292/0969—Spring projected
- Y10T292/097—Operating means
- Y10T292/0994—Lever
Abstract
1,185,641. Latches. MICRO & PRECISION MOULDINGS (CHELTENHAM) Ltd. 9 March, 1967 [14 March, 1966], No. 11000/66. Heading E2A. A tubular mortise latch of the kind having a slidable slam bolt 5 mounted in a housing 1 of generally tubular form and shaped to be receivable in a bore of circular cross section, the latch being released in use by withdrawal of the bolt into the housing by turning door handles respectively mounted on opposite sides of the door and interconnected by an operating shaft, has a rotary actuating member 19 which is turned by the operating shaft and acts to withdraw the bolt into the housing and an intermediate follower member 25 which engages and pivots on a fixed abutment 13 in the housing 1, such engagement defining an effective pivot axis parallel to the rotary axis of the actuating member, offset vertically with respect to the bolt axis when the latch is mounted with that axis horizontal, and which is engaged and turned by the actuating member to release the latch, the follower member in turn engaging the bolt 5 to produce axial withdrawal of the latter into the housing and the arrangement being such that the angular movement of the follower member is greater than that of the actuating member and a latch spring 18 to urge the bolt to a latching position. In the construction shown there are two abutments 13 disposed one on each side of the housing and with which projecting side limbs 27 of the follower member engage; each abutment has a generally rectangular recess (not shown) with radiused corners disposed symmetrically above and below the bolt axis, and in either of which the follower member side limbs can engage and pivot, depending on the direction in which it is turned by the actuating member, the arrangement enabling either direction of handle movement, in use, to effect latch release. The follower member has a projecting central web which passes with clearance between the abutments 13, the web having upwardly and downwardly projecting ears 29 which respectively engage longitudinal slots in side limbs 17 of the bolt to effect latch release. The side limbs during bolt withdrawal slide above and below the fixed abutments 13. In the protruding position of the bolt the bottom faces of the recesses in the abutments are engaged by side faces of the side limbs of the follower member to limit the protrusion of the bolt, the bolt being biased by the spring 18 to the protruding latching position, the spring acting between the bolt and an abutment 14 in the housing. The actuating member has a peg-like section which engages open ended slots 36 formed in inward projections of both side limbs of the follower member so that rotation of the actuating member also rotates the follower member. The housing has a separate end portion 6 which closes the inner end of the latter and which is fitted after the actuating member and the follower member have been inserted from that end of the housing and the portion 6 contains an auxiliary return spring 43 which acts directly on an axially slidable plunger 44 formed with a concave recess engaged by an inwardly projecting lobe 46 of the actuating member; side faces of the lobe engage the housing to limit handle movement. The bolt limbs 17 are moulded with tooth-like projections 50 and the central follower web 26 is moulded with corresponding recesses 52 for engagement by the projections 50 when the bolt is pushed fully home with the follower member 25 in the central resting position, this enables the latch to be fitted to the door by a manufacturer and supplied with the bolt fully retracted so that it is not liable to accidental damage during transport and fitting of the door. The bolt limbs are each provided with an extension 39 with an end formation 40, the formations 40 being received in upper and lower slots 42 in the actuating member 19, which slots extend into the shaft receiving aperture 20 so that the formations 40 enter the aperture 20 and engage the shaft resiliently when the latter is fitted, this resilient engagement provides some assistance in centering the shaft to define the handle resting position. The shaft and handle construction can be such that the shaft is axially displaceable from one side of the door to a locking position in which the opposite side door handle can turn freely without turning the shaft, the shaft in such case being provided with a side notch which in the locking position is engaged by the formations 40 to retain it in such a position, release being effected by turning the other handle.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1100066A GB1185641A (en) | 1966-03-14 | 1966-03-14 | Improvements in or relating to Door Latches |
DE19671678038 DE1678038A1 (en) | 1966-03-14 | 1967-03-11 | Mortise door handles |
US3498660D US3498660A (en) | 1966-03-14 | 1967-03-13 | Door latches |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1100066A GB1185641A (en) | 1966-03-14 | 1966-03-14 | Improvements in or relating to Door Latches |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1185641A true GB1185641A (en) | 1970-03-25 |
Family
ID=9978207
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1100066A Expired GB1185641A (en) | 1966-03-14 | 1966-03-14 | Improvements in or relating to Door Latches |
Country Status (3)
Country | Link |
---|---|
US (1) | US3498660A (en) |
DE (1) | DE1678038A1 (en) |
GB (1) | GB1185641A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2138070A (en) * | 1983-04-11 | 1984-10-17 | Emhart Ind | Latch bolt operating assembly having bolt operating improvements |
GB2377728A (en) * | 2001-07-03 | 2003-01-22 | Allgood Holdings Ltd | Latch bolt/follower linkage |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4974883A (en) * | 1989-08-11 | 1990-12-04 | Armaturen & Presswerk Gmbh | Latch device with a tiltable face plate and a selectable privacy lock |
CN115682521A (en) * | 2021-07-26 | 2023-02-03 | 海信(山东)冰箱有限公司 | Refrigerator |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US262219A (en) * | 1882-08-08 | Latch | ||
US941327A (en) * | 1908-11-17 | 1909-11-23 | Guy C Manning | Automatic knob-operated door-lock. |
US2391736A (en) * | 1944-02-22 | 1945-12-25 | Sargent & Co | Screen door latch |
US2668072A (en) * | 1949-02-14 | 1954-02-02 | Wright Products Inc | Door latch |
-
1966
- 1966-03-14 GB GB1100066A patent/GB1185641A/en not_active Expired
-
1967
- 1967-03-11 DE DE19671678038 patent/DE1678038A1/en active Pending
- 1967-03-13 US US3498660D patent/US3498660A/en not_active Expired - Lifetime
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2138070A (en) * | 1983-04-11 | 1984-10-17 | Emhart Ind | Latch bolt operating assembly having bolt operating improvements |
GB2377728A (en) * | 2001-07-03 | 2003-01-22 | Allgood Holdings Ltd | Latch bolt/follower linkage |
GB2377728B (en) * | 2001-07-03 | 2004-12-15 | Allgood Holdings Ltd | Latch |
US6877783B2 (en) | 2001-07-03 | 2005-04-12 | Allgood Holdings Limited | Latch |
Also Published As
Publication number | Publication date |
---|---|
US3498660A (en) | 1970-03-03 |
DE1678038A1 (en) | 1972-03-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |