GB1268352A - Improvements in or relating to lifting devices - Google Patents

Improvements in or relating to lifting devices

Info

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
Application number
GB31281/68A
Inventor
Herbert Frank Hamilto Blatchly
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Post Office
Original Assignee
Post Office
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Post Office filed Critical Post Office
Priority to GB31281/68A priority Critical patent/GB1268352A/en
Priority to US811329A priority patent/US3627157A/en
Priority to DE1919726A priority patent/DE1919726C2/en
Priority to FR6922178A priority patent/FR2012099A1/fr
Publication of GB1268352A publication Critical patent/GB1268352A/en
Expired legal-status Critical Current

Links

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.
GB31281/68A 1968-07-01 1968-07-01 Improvements in or relating to lifting devices Expired GB1268352A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Cited By (7)

* Cited by examiner, † Cited by third party
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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