GB1131599A - A lifting jack - Google Patents

A lifting jack

Info

Publication number
GB1131599A
GB1131599A GB55099/67A GB5509967A GB1131599A GB 1131599 A GB1131599 A GB 1131599A GB 55099/67 A GB55099/67 A GB 55099/67A GB 5509967 A GB5509967 A GB 5509967A GB 1131599 A GB1131599 A GB 1131599A
Authority
GB
United Kingdom
Prior art keywords
roller
column
jack
teeth
dec
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
GB55099/67A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1131599A publication Critical patent/GB1131599A/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
    • 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
    • B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
    • 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
    • B66F2700/00—Lifting apparatus
    • B66F2700/09—Other lifting devices

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Accessories And Tools For Shearing Machines (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Abstract

1,131,599. Lifting-jacks. A. HAHN. 4 Dec., 1967 [5 Dec., 1966], No. 55099/67. Heading B8J. [Also in Division B3] A lifting jack comprises an upright column 1 mounting a sliding carriage 2 with two oppositely placed walls having openings 2a with oblique running surfaces 3 sloping towards the column 1 in an upward direction. In the openings 2a is a drive roller 4 with guide collars 4a, 4b and smooth end journals 6, 6a which run against the surfaces 3. The central section of the roller 4 has helical teeth 9 which bite into the column 1 when the roller 4 is turned under load by a bar or crank in an eye 5. Instead of having teeth 9 the roller 4 may be knurled. The toothed surface of the roller 4 is harder than the part of the column 1 it engages. The carriage 2 has an abutment 8 to lift the load. The first time the jack is used the teeth 9 bite corresponding recesses in the column 1, a positive engagement being obtained which prevents sliding. The angle of the surfaces 3 is so chosen that the jack is self-locking. A spring 7 continuously presses the roller 4 upwards.
GB55099/67A 1966-12-05 1967-12-04 A lifting jack Expired GB1131599A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH62010A DE1258572B (en) 1966-12-05 1966-12-05 Lifting device designed as a jack

Publications (1)

Publication Number Publication Date
GB1131599A true GB1131599A (en) 1968-10-23

Family

ID=7161668

Family Applications (1)

Application Number Title Priority Date Filing Date
GB55099/67A Expired GB1131599A (en) 1966-12-05 1967-12-04 A lifting jack

Country Status (10)

Country Link
US (1) US3550907A (en)
AT (1) AT279384B (en)
BE (1) BE707570A (en)
CH (1) CH455202A (en)
DE (1) DE1258572B (en)
ES (1) ES347926A1 (en)
FR (1) FR1546307A (en)
GB (1) GB1131599A (en)
LU (1) LU55011A1 (en)
NL (1) NL160226C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2081646B1 (en) * 1970-03-03 1976-06-11 Braselmann Ferd
DE2409012C2 (en) * 1974-02-25 1983-05-05 Banach, Dieter, 5251 Hohkeppel Winch support
AT410126B (en) * 1996-08-16 2003-02-25 Friedrich Mag Ing Blaha adjustment

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB814184A (en) * 1956-05-14 1959-06-03 Hahn Alexander Improvements relating to adjustable supports or props
DE1941462U (en) * 1966-03-09 1966-06-30 Alexander Dipl Ing Hahn JACK FOR VEHICLES WITH MANUAL DRIVE.

Also Published As

Publication number Publication date
ES347926A1 (en) 1969-02-16
LU55011A1 (en) 1968-02-27
BE707570A (en) 1968-04-16
FR1546307A (en) 1968-11-15
CH455202A (en) 1968-06-28
US3550907A (en) 1970-12-29
NL160226B (en) 1979-05-15
DE1258572B (en) 1968-01-11
AT279384B (en) 1970-03-10
NL160226C (en) 1979-10-15
NL6716465A (en) 1968-06-06

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