GB772405A - Safety latch mechanism for hydraulic lifts - Google Patents

Safety latch mechanism for hydraulic lifts

Info

Publication number
GB772405A
GB772405A GB25594/55A GB2559455A GB772405A GB 772405 A GB772405 A GB 772405A GB 25594/55 A GB25594/55 A GB 25594/55A GB 2559455 A GB2559455 A GB 2559455A GB 772405 A GB772405 A GB 772405A
Authority
GB
United Kingdom
Prior art keywords
rack
pawl
pedal
lift
ram
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
GB25594/55A
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.)
Joyce Cridland Co
Original Assignee
Joyce Cridland Co
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 Joyce Cridland Co filed Critical Joyce Cridland Co
Publication of GB772405A publication Critical patent/GB772405A/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
    • B66F7/10—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks
    • B66F7/16—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by one or more hydraulic or pneumatic jacks
    • B66F7/20—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by one or more hydraulic or pneumatic jacks by several jacks with means for maintaining the platforms horizontal during movement
    • 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
    • B66F7/10—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks
    • B66F7/16—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by one or more hydraulic or pneumatic jacks

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Mechanical Control Devices (AREA)
  • Vehicle Step Arrangements And Article Storage (AREA)

Abstract

772,405. Garage lifts. JOYCE-CRIDLAND CO. Sept. 7,1955 [Sept. 9, 1954], No. 25594/55. Class 78 (3). A pair of vertical lifting rams 10, 11 of a garage lift are normally prevented from lowering by a pawl 44 which is urged by a counterweight 46 into engagement with a rack 32 carried by a vehicle engaging plate 20, but which is adapted to be released from the rack by upward movement of a pedal 52 mounted flush with the floor 12. The pawl mechanism is located in a housing 22 which is secured to the upper end of the cylinder of ram 10, and in which is journalled one end of a ram synchronizing shaft 34 which carries a pair of pinions 36 meshing with rack 32 and a further rack 32a carried by vehicle engaging plate 20a. The pedal is arranged directly beneath plate 20 so that when the lift is fully lowered this plate engages the pedal and automatically moves pawl 44 to its locking position. In a.modification (Fig. 4) the invention is applied to a single ram lift in which a rack 70 secured to member 66 slides in a housing 72 containing a pawl-andpedal mechanism similar to that shown in Fig. 2.
GB25594/55A 1954-09-09 1955-09-07 Safety latch mechanism for hydraulic lifts Expired GB772405A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US772405XA 1954-09-09 1954-09-09

Publications (1)

Publication Number Publication Date
GB772405A true GB772405A (en) 1957-04-10

Family

ID=22136900

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25594/55A Expired GB772405A (en) 1954-09-09 1955-09-07 Safety latch mechanism for hydraulic lifts

Country Status (1)

Country Link
GB (1) GB772405A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102234053A (en) * 2010-05-06 2011-11-09 徐州中翰矿山设备制造有限公司 Automatic rope adjusting and replacing device for mining hoisting container
CN103818854A (en) * 2014-03-12 2014-05-28 洛阳佳嘉乐农业产品开发有限公司 Lifting protection mechanism of crop planting device
CN106185709A (en) * 2016-07-27 2016-12-07 合肥航航空设备有限公司 A kind of lock dog button dead formula single-column lifting machine
CN110817739A (en) * 2018-08-07 2020-02-21 营口冠华良易汽保设备有限公司 Non-column movable lifter

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102234053A (en) * 2010-05-06 2011-11-09 徐州中翰矿山设备制造有限公司 Automatic rope adjusting and replacing device for mining hoisting container
CN102234053B (en) * 2010-05-06 2013-07-17 徐州中翰矿山设备制造有限公司 Automatic rope adjusting and replacing device for mining hoisting container
CN103818854A (en) * 2014-03-12 2014-05-28 洛阳佳嘉乐农业产品开发有限公司 Lifting protection mechanism of crop planting device
CN103818854B (en) * 2014-03-12 2016-02-03 洛阳佳嘉乐农产品开发股份有限公司 A kind of lifting protection mechanism of crop-planting device
CN106185709A (en) * 2016-07-27 2016-12-07 合肥航航空设备有限公司 A kind of lock dog button dead formula single-column lifting machine
CN110817739A (en) * 2018-08-07 2020-02-21 营口冠华良易汽保设备有限公司 Non-column movable lifter

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