GB981991A - Improvements in or relating to lifting platforms - Google Patents

Improvements in or relating to lifting platforms

Info

Publication number
GB981991A
GB981991A GB3423562A GB3423562A GB981991A GB 981991 A GB981991 A GB 981991A GB 3423562 A GB3423562 A GB 3423562A GB 3423562 A GB3423562 A GB 3423562A GB 981991 A GB981991 A GB 981991A
Authority
GB
United Kingdom
Prior art keywords
platform
bell crank
base
strip
pivoted
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
GB3423562A
Inventor
Ronald William Hyde
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.)
Cotterell & Pither Ltd
Original Assignee
Cotterell & Pither Ltd
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 Cotterell & Pither Ltd filed Critical Cotterell & Pither Ltd
Priority to GB3423562A priority Critical patent/GB981991A/en
Publication of GB981991A publication Critical patent/GB981991A/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
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/0625—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement with wheels for moving around the floor
    • 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
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/065—Scissor linkages, i.e. X-configuration
    • 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
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/08—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement hydraulically or pneumatically operated

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Types And Forms Of Lifts (AREA)

Abstract

981,991. Mobile platform elevators. COTTERELL & PITHER Ltd. Nov. 27, 1963 [Sept. 6, 1962], No. 34235/62. Heading B8H. The platform 1 of a mobile elevator is connected to a base 2 by links 3, pivoted to the platform at 7 and slidably connected to the base at 8, and links 4, pivoted to the base at 7a and slidably connected to the platform at 8a and is raised by a pair of hydraulic rams 13, 14 each pivoted at 15 to the base and at 23 to a bell crank which is pivoted at 22 to a projection 19 on a tube 20 extending between, and secured to, the links 4. When the platform is in the lowered full-line position, Fig. 3, initial extension of the rams rotates the bell crank 17 about the pivot point 22 until a roller 24 on the bell crank engages a spring steel strip 25 on the base. Further extension of the rams causes further rotation of the bell crank 17 about the pivot point 22 thereby raising the pivot point 22 and raising the linkage 3, 4 by means of the projection 19 and tube 20. The rotation of the bell crank 17 continues until the pivot point 15, 22, 23 are in line and thereafter the roller 24 is lifted from the strip 25 and the raising of the platform 1 continues to the dashed-line position, Fig. 3. A stop 27 may be provided on the projection 19 to limit the rotation of the bell crank 17 so that the rams begin to lift the platform 1 by acting directly on the projection 19 before the pivot points 15, 22, 23 are aligned. The flexible strip 25 is normally clear of the ground but deflects under the load from the roller 24 until it contacts the ground to prevent the elevator from movement over the ground during the first stage of lifting the platform. In a modification, the bell crank 17 is replaced by a bell crank having three rollers, Fig. 4 (not shown), adapted to engage the strip 25 in turn during the first stage of lifting the platform. In a further modification (not shown) a plurality of bell cranks, each coming into operation in turn, is provided. It is stated in the Provisional Specification that the roller or rollers on the bell crank may be replaced by a slide block or blocks which slide over the strip 25.
GB3423562A 1962-09-06 1962-09-06 Improvements in or relating to lifting platforms Expired GB981991A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3423562A GB981991A (en) 1962-09-06 1962-09-06 Improvements in or relating to lifting platforms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3423562A GB981991A (en) 1962-09-06 1962-09-06 Improvements in or relating to lifting platforms

Publications (1)

Publication Number Publication Date
GB981991A true GB981991A (en) 1965-02-03

Family

ID=10363111

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3423562A Expired GB981991A (en) 1962-09-06 1962-09-06 Improvements in or relating to lifting platforms

Country Status (1)

Country Link
GB (1) GB981991A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0119969A2 (en) * 1983-03-21 1984-09-26 Omar Di Oldani Gaetano Pedestrian controlled lift truck particularly for moving helicopters across hardstands
US4558648A (en) * 1983-09-20 1985-12-17 Lift-R Technologies, Inc. Energy-recycling scissors lift
EP0374500A1 (en) * 1988-12-08 1990-06-27 Hein-Werner Corporation Vehicle scissor lift
US5476050A (en) * 1993-08-31 1995-12-19 Mayville Engineering Company, Inc. Single beam aerial work platform
NL2000346C2 (en) * 2006-11-28 2008-05-29 Bin Innovations Standing support, principally used in operating theaters in hospitals, has under frame which rests on floor and removable or fixed standing surface
CN103692342A (en) * 2013-10-31 2014-04-02 江苏力星通用钢球股份有限公司 Automatic ball unloading combination system of steel ball lapping machine
CN104859996A (en) * 2015-04-25 2015-08-26 杜志刚 Multifunctional conveyor

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0119969A2 (en) * 1983-03-21 1984-09-26 Omar Di Oldani Gaetano Pedestrian controlled lift truck particularly for moving helicopters across hardstands
EP0119969A3 (en) * 1983-03-21 1985-07-03 Omar Di Oldani Gaetano Pedestrian controlled lift truck particularly for moving helicopters across hardstands
US4558648A (en) * 1983-09-20 1985-12-17 Lift-R Technologies, Inc. Energy-recycling scissors lift
EP0374500A1 (en) * 1988-12-08 1990-06-27 Hein-Werner Corporation Vehicle scissor lift
US5476050A (en) * 1993-08-31 1995-12-19 Mayville Engineering Company, Inc. Single beam aerial work platform
NL2000346C2 (en) * 2006-11-28 2008-05-29 Bin Innovations Standing support, principally used in operating theaters in hospitals, has under frame which rests on floor and removable or fixed standing surface
CN103692342A (en) * 2013-10-31 2014-04-02 江苏力星通用钢球股份有限公司 Automatic ball unloading combination system of steel ball lapping machine
CN104859996A (en) * 2015-04-25 2015-08-26 杜志刚 Multifunctional conveyor

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