GB556870A - Improvements in manhole covers - Google Patents
Improvements in manhole coversInfo
- Publication number
- GB556870A GB556870A GB658042D GB658042D GB556870A GB 556870 A GB556870 A GB 556870A GB 658042 D GB658042 D GB 658042D GB 658042 D GB658042 D GB 658042D GB 556870 A GB556870 A GB 556870A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lever
- cover
- latch
- secured
- latch lever
- 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
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
- E02D29/14—Covers for manholes or the like; Frames for covers
- E02D29/1463—Hinged connection of cover to frame
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
- E02D29/14—Covers for manholes or the like; Frames for covers
- E02D29/1427—Locking devices
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
556,870. Fastenings. BROAD & CO., Ltd., and HARRIS, D. G. May 14, 1942, No. 6580. [Class 44] [Also in Group X] Relates to a manhole cover 1 of the kind which is freed from the outside by a slidable locking lever 9 with a hooked end 10 engaging the bell-crank latch lever 14, the lever 9 being normally secured by a padlock 11 to a bracket on the cover, and consists in providing means for opening the cover from the inside comprising a plate 22 secured to the downturned free end of the latch lever and engaged by the hand or head to free the latch. On release of the latch a counterweight 26, connected by a lever 25 and link 27 to the cover, raises the latter; a handle 29 may be provided in addition. The cover 1 is preferably hinged at one side in a frame 4 with weep holes 6. The latch lever may have a brass insert 20.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB658042D GB556870A (en) | 1942-05-14 | 1942-05-14 | Improvements in manhole covers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB658042D GB556870A (en) | 1942-05-14 | 1942-05-14 | Improvements in manhole covers |
Publications (1)
Publication Number | Publication Date |
---|---|
GB556870A true GB556870A (en) | 1943-10-26 |
Family
ID=9817085
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB658042D Expired GB556870A (en) | 1942-05-14 | 1942-05-14 | Improvements in manhole covers |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB556870A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015157480A1 (en) * | 2014-04-10 | 2015-10-15 | S&C Electric Company | Enclosure with lid counterweight assembly |
EP3812513A1 (en) * | 2019-10-23 | 2021-04-28 | Aqseptence Group Pty Ltd. | A locking assembly |
-
1942
- 1942-05-14 GB GB658042D patent/GB556870A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015157480A1 (en) * | 2014-04-10 | 2015-10-15 | S&C Electric Company | Enclosure with lid counterweight assembly |
US9871354B2 (en) | 2014-04-10 | 2018-01-16 | S&C Electric Company | Enclosure with lid counterweight assembly |
EP3812513A1 (en) * | 2019-10-23 | 2021-04-28 | Aqseptence Group Pty Ltd. | A locking assembly |
US11613867B2 (en) * | 2019-10-23 | 2023-03-28 | Aqseptence Group Pty Ltd. | Locking assembly |
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