GB324605A - A new or improved lifting jack - Google Patents

A new or improved lifting jack

Info

Publication number
GB324605A
GB324605A GB1635029A GB1635029A GB324605A GB 324605 A GB324605 A GB 324605A GB 1635029 A GB1635029 A GB 1635029A GB 1635029 A GB1635029 A GB 1635029A GB 324605 A GB324605 A GB 324605A
Authority
GB
United Kingdom
Prior art keywords
crutch
stem
jack
casing
new
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
GB1635029A
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.)
R T SHELLEY Ltd
Original Assignee
R T SHELLEY 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 R T SHELLEY Ltd filed Critical R T SHELLEY Ltd
Priority to GB1635029A priority Critical patent/GB324605A/en
Publication of GB324605A publication Critical patent/GB324605A/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
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/08—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated
    • B66F3/10—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated with telescopic sleeves
    • 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
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/08—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated
    • B66F3/16—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated actuated through bevel-wheel gearings

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Earth Drilling (AREA)

Abstract

324,605. Shelley, Ltd., R. T., and Lawrence, E. G. May 26, 1929. Jacks.-A multiple-lift screw-jack has means for holding the central crutch stem against rotation comprising telescopic key members non- rotatably secured to the crutch stem and jack casing respectively, The crutch stem k has a downwardly extending tube n of angular crosssection engaging the upper end of an angular rod p carrying at its lower end a plate s the ends of which engage grooves t in the casing a. Lugs q at the top of the rod engage stops r at the lower end of the tube as the jack is extended. Two or more screwed sleeves f are arranged between the casing and crutch stem.
GB1635029A 1929-05-28 1929-05-28 A new or improved lifting jack Expired GB324605A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1635029A GB324605A (en) 1929-05-28 1929-05-28 A new or improved lifting jack

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1635029A GB324605A (en) 1929-05-28 1929-05-28 A new or improved lifting jack

Publications (1)

Publication Number Publication Date
GB324605A true GB324605A (en) 1930-01-30

Family

ID=10075691

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1635029A Expired GB324605A (en) 1929-05-28 1929-05-28 A new or improved lifting jack

Country Status (1)

Country Link
GB (1) GB324605A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0538208A1 (en) * 1991-10-18 1993-04-21 Enzo Maggiori Electrical, telescopic jack
EP2194018A3 (en) * 2008-12-08 2011-08-24 Helmholtz-Zentrum Geesthacht Zentrum für Material- und Küstenforschung GmbH Lifting device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0538208A1 (en) * 1991-10-18 1993-04-21 Enzo Maggiori Electrical, telescopic jack
EP2194018A3 (en) * 2008-12-08 2011-08-24 Helmholtz-Zentrum Geesthacht Zentrum für Material- und Küstenforschung GmbH Lifting device

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