GB196070A - Improvements in or relating to manhole covers and frames - Google Patents
Improvements in or relating to manhole covers and framesInfo
- Publication number
- GB196070A GB196070A GB110222A GB110222A GB196070A GB 196070 A GB196070 A GB 196070A GB 110222 A GB110222 A GB 110222A GB 110222 A GB110222 A GB 110222A GB 196070 A GB196070 A GB 196070A
- Authority
- GB
- United Kingdom
- Prior art keywords
- key
- arms
- hole
- cover
- frames
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J13/00—Covers or similar closure members for pressure vessels in general
- F16J13/02—Detachable closure members; Means for tightening closures
- F16J13/08—Detachable closure members; Means for tightening closures attached by one or more members actuated to project behind a part or parts of the frame
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Sewage (AREA)
Abstract
196,070. Edwards, E. M., and Young & Marten, Ltd. Jan. 13, 1922. Locks, square-key and like; obstruction-bars.- Relates to man-hole covers of the kind having a key-plate 13 on which revolves a member 23 carrying the arms 22 which engage recesses 33 in the frame to lock the cover. According to the invention, the key-plate is provided with a keyhole 18 identical in form with the key-hole 25 in the member 23, but set at an angle thereto when the arms 22 are in locking position. The key is first used to remove the dust-excluding plug 17, and after insertion in the key-hole 18 is turned in the circular recess 19 until it registers with the key-hole 25. The arms 22 may then be turned to unlock the cover. When locking the cover the ends of the arms 22 ride up inclines 34 on the frame and pass into recesses 35, as shown in Fig. 9.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB110222A GB196070A (en) | 1922-01-13 | 1922-01-13 | Improvements in or relating to manhole covers and frames |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB110222A GB196070A (en) | 1922-01-13 | 1922-01-13 | Improvements in or relating to manhole covers and frames |
Publications (1)
Publication Number | Publication Date |
---|---|
GB196070A true GB196070A (en) | 1923-04-13 |
Family
ID=9716183
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB110222A Expired GB196070A (en) | 1922-01-13 | 1922-01-13 | Improvements in or relating to manhole covers and frames |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB196070A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2756511A1 (en) * | 1977-01-05 | 1978-07-06 | Robert Dumortier | LOCKING DEVICE FOR MANHOLE COVERS OF STREET ENTRANCE CHAMBERS, COMPOSING OF A REMOVABLE LID AND A FIXED BASE |
-
1922
- 1922-01-13 GB GB110222A patent/GB196070A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2756511A1 (en) * | 1977-01-05 | 1978-07-06 | Robert Dumortier | LOCKING DEVICE FOR MANHOLE COVERS OF STREET ENTRANCE CHAMBERS, COMPOSING OF A REMOVABLE LID AND A FIXED BASE |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US1696326A (en) | Multiple-plug key | |
GB196070A (en) | Improvements in or relating to manhole covers and frames | |
US1464854A (en) | Guard for automobile ignition switches | |
US1510561A (en) | Lock | |
GB270983A (en) | An improved locking device for padlocks and other locks | |
US1336757A (en) | Tire-protector | |
US1705072A (en) | Lock seal | |
GB323444A (en) | Improvements relating to combination locks | |
US1578968A (en) | Key holder | |
US1940782A (en) | Safety device for locks | |
ES79070A1 (en) | Lock and key security locking system, both modified at will. | |
GB149560A (en) | Improvements in or relating to locks or security devices for money bags, hand bags or the like | |
GB302753A (en) | A security locking device for automobile body door handles | |
GB517655A (en) | Improvements relating to pin-tumbler cylinder locks and keys therefor | |
USD81427S (en) | Design pob a tumbler | |
GB311563A (en) | Improved lock for attache cases and the like | |
SU25427A1 (en) | Control plate to mortise lock | |
US1616407A (en) | Key retainer | |
GB260267A (en) | Improvements in locks for cycles and the like | |
GB267421A (en) | Improvements relating to cylinder locks | |
GB260085A (en) | Improvements in, or relating to, locks having sealing devices | |
GB325711A (en) | A new or improved gulley for the drainage of roads | |
GB324045A (en) | Means for preventing removal of keys from locks | |
GB191327680A (en) | Improvements in Locks for Trunks, Suit Cases and the like. | |
GB179001A (en) | Improvements in and relating to locks |