GB1102274A - Hydraulic jack - Google Patents

Hydraulic jack

Info

Publication number
GB1102274A
GB1102274A GB18835/65A GB1883565A GB1102274A GB 1102274 A GB1102274 A GB 1102274A GB 18835/65 A GB18835/65 A GB 18835/65A GB 1883565 A GB1883565 A GB 1883565A GB 1102274 A GB1102274 A GB 1102274A
Authority
GB
United Kingdom
Prior art keywords
nut
jacks
actuated
switch
control valve
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
GB18835/65A
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.)
Richard Costain Ltd
Original Assignee
Richard Costain 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 Richard Costain Ltd filed Critical Richard Costain Ltd
Publication of GB1102274A publication Critical patent/GB1102274A/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
    • B66F3/46—Combinations of several jacks with means for interrelating lifting or lowering movements
    • 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
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • B66F3/25—Constructional features
    • B66F3/30—Constructional features with positive brakes or locks
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/35—Extraordinary methods of construction, e.g. lift-slab, jack-block
    • E04B1/3511—Lift-slab; characterised by a purely vertical lifting of floors or roofs or parts thereof
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/14—Conveying or assembling building elements
    • E04G21/16—Tools or apparatus
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/14—Conveying or assembling building elements
    • E04G21/16—Tools or apparatus
    • E04G21/163—Jacks specially adapted for working-up building elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/02—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member
    • F15B15/06—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement
    • F15B15/061—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement by unidirectional means

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Types And Forms Of Lifts (AREA)
  • Actuator (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)

Abstract

1,102,274. Jacks. RICHARD COSTAIN Ltd. 4 May, 1965 [8 May, 1964], No. 18835/65. Heading B8J. An hydraulic jack 1 comprises a nut 9, mounted on a screw-thread provided on a piston-rod 4, turned by an auxiliary mechanism which controls the jack stroke. The auxiliary mechanism consists of ratchet teeth 10 on the nut 9 co-operating with a pawl 11 actuated by a single-acting hydraulic cylinder 12 with a piston 13. Liquid under pressure from a source 6 is supplied simultaneously through pipes 7, 8 and a non-return valve 21 to a space 5 in the cylinder 2 and through a pipe 15 to a space 14 in the cylinder 13 by means of a control valve 16. The control valve 16 is actuated by electrical switches 17, 18 which co-operate with the pawl 11. After each partial rotation of the nut 9 corresponding to a selected predetermined jack stroke the switch 17, actuated by the pawl 11, effects a change-over of the control valve 16 to release the pressure in the pipes 7, 8, 15. A spring 19 returns the piston 13 when the pawl 11 actuates the switch 18 to change back the control valve 16 for a further stroke. The nut 9, which constantly bears on the cylinder 2 acts as a locking nut in case of pressure failure. A switch 20 actuated by the teeth 10 may be provided instead of or additional to the switch 17. The jack 1 has a relief system and a worm-wheel (not shown) may be provided on the periphery of the nut 9 to enable the jack 1 to be lowered. A system comprising several jacks with switches 18 connected in series so that all the jacks, which may be hydraulically independent and subject to different loads operate at the same average lifting speed. A system may comprise several jacks connected to a common hydraulic supply under a control valve actuated by a switch on one of the jacks, provided the jacks are equally loaded.
GB18835/65A 1964-05-08 1965-05-04 Hydraulic jack Expired GB1102274A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6405158A NL6405158A (en) 1964-05-08 1964-05-08

Publications (1)

Publication Number Publication Date
GB1102274A true GB1102274A (en) 1968-02-07

Family

ID=19790044

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18835/65A Expired GB1102274A (en) 1964-05-08 1965-05-04 Hydraulic jack

Country Status (9)

Country Link
US (2) US3309062A (en)
AT (1) AT286551B (en)
CH (1) CH444423A (en)
DK (1) DK111636C (en)
ES (1) ES312682A1 (en)
FI (1) FI46053C (en)
GB (1) GB1102274A (en)
NL (1) NL6405158A (en)
NO (1) NO118871B (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3519246A (en) * 1968-06-28 1970-07-07 Hartley Belding Hoisting unit
US3710690A (en) * 1970-11-16 1973-01-16 Gen Motors Corp Accelerator
SE363798C (en) * 1972-05-04 1976-09-27 D V H Johansson DEVICE FOR STEPLY LIFT LOAD, SPEC. LARGE LOADS
US4014519A (en) * 1976-01-30 1977-03-29 Fmc Corporation Hydraulic jack with mechanical locking device
US4251974A (en) * 1979-04-25 1981-02-24 Peter M. Vanderklaauw Sensing and control apparatus for lifting heavy construction elements
SE417082B (en) * 1979-07-05 1981-02-23 Resmastservice Ab DEVICE FOR STEPLIFTLY LIFTING, SPECIALLY LARGE LOADER, WITH THE HELP OF ONE OR MULTIPLE JUDGMENTS
DE3333292A1 (en) * 1983-09-15 1985-04-18 Walter 7290 Freudenstadt Finkbeiner SIMULTANEOUS LIFTING DEVICE
JP2519926B2 (en) * 1987-05-08 1996-07-31 カヤバ工業株式会社 Hydraulic jack
US4832315A (en) * 1988-03-01 1989-05-23 Vanderklaauw Peter M System for synchronized lifting of heavy building elements
US4942701A (en) * 1989-07-24 1990-07-24 Complete Hydraulic Building Systems, Inc. Hydraulic winch system for use in erecting clear-span, pole-type buildings
US5970665A (en) * 1996-10-02 1999-10-26 Oudman; Jack A. System and method for maintaining a building a structure in a level condition
CN1080801C (en) * 1996-10-07 2002-03-13 邓庚厚 Top-lifting building method of building from upper to lower
US6860068B2 (en) * 2001-06-26 2005-03-01 John J. Halloran Potential energy storage system
US7392624B2 (en) * 2003-02-05 2008-07-01 Dwight Eric Kinzer Modular load-bearing structural column
EP2655898A1 (en) 2010-12-22 2013-10-30 Actuant Corporation Hydraulic cylinder position sensing and locking system and corresponding method
ES2362841B1 (en) * 2011-05-06 2012-05-23 Melchor Gabilondo S.A. HYDRAULIC CAT WITH INTERLOCK.
US20150224967A1 (en) * 2014-02-12 2015-08-13 Rodney Lee Rensink Trailer Jack
US9574613B1 (en) * 2014-06-23 2017-02-21 Stephen A. Youngers Machine leveling pedestal
USD765339S1 (en) 2014-09-17 2016-08-30 Actuant Corporation Base member of a portable lift system
WO2016043859A1 (en) * 2014-09-17 2016-03-24 Actuant Corporation Portable self-locking lift system
TWI663378B (en) * 2018-07-27 2019-06-21 鄭振廷 Reverse steel column vertical alignment device
SE544032C2 (en) * 2019-08-14 2021-11-09 I & P I Norr Ab An adjustment system, and adjustable support, a method of orienting an element, and use of such system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1223621A (en) * 1916-07-24 1917-04-24 Charles F Scherenzel Lifting-jack.
US2201189A (en) * 1937-12-01 1940-05-21 Makaroff Pneumatic automobile lift
US2875980A (en) * 1954-06-25 1959-03-03 Grace Karl Truck raising and supporting mechanism
US2975560A (en) * 1955-09-22 1961-03-21 Lloyd H Leonard Method of and apparatus for lifting pre-formed slabs
US3036816A (en) * 1956-03-20 1962-05-29 Allan H Stubbs Apparatus for lift-slab building construction
US3104593A (en) * 1960-12-28 1963-09-24 Regent Jack Mfg Co Inc Fluid actuators
US3201088A (en) * 1961-11-13 1965-08-17 Internat Lift Slab Corp System for elevating building components
US3327997A (en) * 1965-02-16 1967-06-27 Zetco Engineering And Tool Com Sensing apparatus

Also Published As

Publication number Publication date
US3309062A (en) 1967-03-14
NL6405158A (en) 1965-11-09
NO118871B (en) 1970-02-23
DK111636B (en) 1968-09-23
AT286551B (en) 1970-12-10
FI46053B (en) 1972-08-31
US3396944A (en) 1968-08-13
FI46053C (en) 1972-12-11
CH444423A (en) 1967-09-30
ES312682A1 (en) 1965-12-16
DK111636C (en) 1968-09-23

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