GB1268352A - Improvements in or relating to lifting devices - Google Patents
Improvements in or relating to lifting devicesInfo
- Publication number
- GB1268352A GB1268352A GB31281/68A GB3128168A GB1268352A GB 1268352 A GB1268352 A GB 1268352A GB 31281/68 A GB31281/68 A GB 31281/68A GB 3128168 A GB3128168 A GB 3128168A GB 1268352 A GB1268352 A GB 1268352A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lifting
- clamp
- pivoted
- cover
- rod
- 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
- 235000004443 Ricinus communis Nutrition 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F19/00—Hoisting, lifting, hauling or pushing, not otherwise provided for
- B66F19/005—Lifting devices for manhole covers
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
1,268,352. Lifting devices for manhole covers. POST OFFICE. 31 March, 1969 [1 July, 1968], No. 31281/68. Headings B8H and B8J. A lifting device for a manhole cover, comprises a lifting beam 1 of square section with a pair of fixed radius arms 2 carrying wheels 3. A further pair of radius arms 4 is fixed to the beam 1, a piston-rod 5 being pivotally secured thereto by a pin 6. The rod 5 is part of an hydraulic jack with a cylinder 7 having an enlarged reservoir portion 8 with a pump piston whose rod 9 is pivoted to a handle 10 itself pivoted to a lug 11 on the reservoir portion 8. A clamp 13 is slidable on the cylinder 7 and has projections 13a pivotally mounting a frame 14 consisting of rods 15 attached to a housing 16 and pivoted by pins 22 to further radius arms 22a on the beam 1. A castor wheel 20 is attached to the housing 16. Slidably mounted on the beam 1 are two sleeves 25 carrying hooks 26. Prior to use, the jack is fully retracted, Fig. 3: chain dotted lines, with the clamp 13 locked adjacent the portion 8. Lifting keys are then inserted in the manhole cover, the apparatus manoeuvred over the cover and the hooks 26, slid to suitable positions, engaged with the keys, clamp 13 being adjusted if necessary. The handle 10 is then operated to extend the jack. The beam 1 is rotated thereby about its longitudinal axis to move vertically, lifting the cover and taking up the full-line position shown in Fig. 3.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB31281/68A GB1268352A (en) | 1968-07-01 | 1968-07-01 | Improvements in or relating to lifting devices |
US811329A US3627157A (en) | 1968-07-01 | 1969-03-28 | Lifting devices |
DE1919726A DE1919726C2 (en) | 1968-07-01 | 1969-04-18 | Lifting device |
FR6922178A FR2012099A1 (en) | 1968-07-01 | 1969-07-01 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB31281/68A GB1268352A (en) | 1968-07-01 | 1968-07-01 | Improvements in or relating to lifting devices |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1268352A true GB1268352A (en) | 1972-03-29 |
Family
ID=10320777
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB31281/68A Expired GB1268352A (en) | 1968-07-01 | 1968-07-01 | Improvements in or relating to lifting devices |
Country Status (4)
Country | Link |
---|---|
US (1) | US3627157A (en) |
DE (1) | DE1919726C2 (en) |
FR (1) | FR2012099A1 (en) |
GB (1) | GB1268352A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2136363A (en) * | 1983-03-16 | 1984-09-19 | Petroleum Equipment Trading Co | Trolley |
GB2311055A (en) * | 1996-03-19 | 1997-09-17 | Westside Investments Limited | Manhole cover lifting devices |
GB2370560A (en) * | 2000-11-16 | 2002-07-03 | T W Engineering Co Ltd | Lifting device |
CN109941892A (en) * | 2019-03-29 | 2019-06-28 | 陈浩 | A kind of municipal administration rain grid lifting device |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4043403A (en) * | 1976-03-23 | 1977-08-23 | Chromalloy American Corporation | Agricultural implement frame elevating mechanism |
US4317489A (en) * | 1978-11-27 | 1982-03-02 | Deere & Company | Ground-working implement and lift linkage therefor |
FR2497185A1 (en) * | 1980-12-31 | 1982-07-02 | Girardot Bernard | Door freeing lifting and moving hoist - has wheeled frame with lever-operated transverse lifting bar |
DE3148385A1 (en) * | 1981-12-07 | 1983-06-09 | Max 8200 Rosenheim Haas | Vehicle jack or the like with scissor-like supporting legs |
FR2528817A1 (en) * | 1982-06-16 | 1983-12-23 | Lafeuille Marc | Trolley to handle heavy plate - has two wheels and adjustable hooks engaging with holes in plate |
AT380044B (en) * | 1983-06-06 | 1986-03-25 | Koessler Johann | CONCLUSION FOR SHAFTS, e.g. ON ROADS AND KEYS HIEFUER |
US5387058A (en) * | 1993-03-31 | 1995-02-07 | Smoot Company | Airlift railcar discharge adaptor |
US5575595A (en) * | 1993-03-31 | 1996-11-19 | Smoot Co. | Low profile parallel railcar discharge adaptor |
US6554086B1 (en) | 2000-10-27 | 2003-04-29 | Invacare Corporation | Obstacle traversing wheelchair |
US7040429B2 (en) | 2001-10-10 | 2006-05-09 | Invacare Corporation | Wheelchair suspension |
US7293801B2 (en) | 2003-08-18 | 2007-11-13 | Invacare Corporation | Self-stabilizing suspension for wheeled vehicles |
US11213441B2 (en) | 2002-10-25 | 2022-01-04 | Invacare Corporation | Suspension for wheeled vehicles |
US7896394B2 (en) * | 2005-08-18 | 2011-03-01 | Sunrise Medical Hhg, Inc. | Midwheel drive wheelchair with independent front and rear suspension |
EP2272478B1 (en) | 2007-02-08 | 2012-05-23 | Invacare Corporation | Wheelchair suspension |
CA2911675C (en) | 2007-02-14 | 2018-09-18 | Invacare Corporation | Stability control system |
EP3238682A3 (en) | 2009-10-09 | 2018-01-10 | Invacare Corporation | Wheelchair suspension with opposite movement of anti-tip arms |
US8851214B2 (en) | 2010-07-15 | 2014-10-07 | Permobil Ab | Electric mid-wheel drive wheelchair |
US9725289B2 (en) | 2010-09-13 | 2017-08-08 | Hlbp Design Corp. | Hydraulic lifting apparatus |
US9290370B1 (en) | 2010-09-13 | 2016-03-22 | Hlbp Design Corp. | Hydraulic lifting apparatus |
US8939434B2 (en) * | 2011-06-14 | 2015-01-27 | Timothy Selby | Method and device for removal of vertical manway cover |
AU2013221283B2 (en) | 2012-02-15 | 2017-05-25 | Invacare Corporation | Wheelchair suspension |
US9301444B2 (en) * | 2014-05-02 | 2016-04-05 | Deere & Company | Rotary cutting deck height of cut adjustment mechanism |
CN110040670B (en) * | 2019-05-14 | 2024-05-31 | 济南热力集团有限公司 | Portable hydraulic device for opening pipeline well lid |
AU2021228590A1 (en) | 2020-02-25 | 2022-09-22 | Invacare Corporation | Wheelchair and suspension systems |
-
1968
- 1968-07-01 GB GB31281/68A patent/GB1268352A/en not_active Expired
-
1969
- 1969-03-28 US US811329A patent/US3627157A/en not_active Expired - Lifetime
- 1969-04-18 DE DE1919726A patent/DE1919726C2/en not_active Expired
- 1969-07-01 FR FR6922178A patent/FR2012099A1/fr not_active Withdrawn
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2136363A (en) * | 1983-03-16 | 1984-09-19 | Petroleum Equipment Trading Co | Trolley |
GB2311055A (en) * | 1996-03-19 | 1997-09-17 | Westside Investments Limited | Manhole cover lifting devices |
GB2311055B (en) * | 1996-03-19 | 1999-05-12 | Westside Investments Limited | A manhole cover lifter |
GB2370560A (en) * | 2000-11-16 | 2002-07-03 | T W Engineering Co Ltd | Lifting device |
GB2370560B (en) * | 2000-11-16 | 2004-11-17 | T W Engineering Co Ltd | Lifting device |
CN109941892A (en) * | 2019-03-29 | 2019-06-28 | 陈浩 | A kind of municipal administration rain grid lifting device |
CN109941892B (en) * | 2019-03-29 | 2020-04-10 | 林向亮 | Municipal administration rainwater grate mentions device |
Also Published As
Publication number | Publication date |
---|---|
FR2012099A1 (en) | 1970-03-13 |
DE1919726C2 (en) | 1982-10-21 |
DE1919726A1 (en) | 1970-03-05 |
US3627157A (en) | 1971-12-14 |
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