GB1298534A - Lifting gear, particularly lifting jack - Google Patents

Lifting gear, particularly lifting jack

Info

Publication number
GB1298534A
GB1298534A GB2290871A GB2290871A GB1298534A GB 1298534 A GB1298534 A GB 1298534A GB 2290871 A GB2290871 A GB 2290871A GB 2290871 A GB2290871 A GB 2290871A GB 1298534 A GB1298534 A GB 1298534A
Authority
GB
United Kingdom
Prior art keywords
engagement
rack
axis
grooves
rotatable
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
GB2290871A
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
Priority claimed from DE19702009797 external-priority patent/DE2009797C/en
Application filed by Individual filed Critical Individual
Publication of GB1298534A publication Critical patent/GB1298534A/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
    • B66F3/02—Devices, e.g. jacks, adapted for uninterrupted lifting of loads with racks actuated by pinions

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

1298534 Toothed gearing FERD BRASELMANN 19 April 1971 [3 March 1970] 22908/71 Heading F2Q [Also in Division B8] A lifting jack, Fig. 1, comprises a vertical rack 1 with semi-cylindrical grooves 2 at uniform spacing, a carrier element 3, an engagement body 4 rotatable about an axis 5 in the element 3 and a roller 6 rotatable about a shaft 7 in the element 3. The engagement body has three engagement elements 8, 9, 10 each in the form of a segment of a cylinder matching the grooves 2, and arranged at the apices of an equilateral triangle at a spacing equal to the pitch of the grooves 2. The load P is connected to the shaft 7 and produces a reaction Q. These combine to give a line of action C through the axis 5 and the shaft 7. If, as shown, this line C passes above the centre 11 of the lower segment 9 the device is self-locking. The load is raised or lowered by rotation of the body 4 using a lever (not shown), the axis 5 following a series of arcs centred on successive grooves 2. This results in a flapping action as the distance of the axis 5 from the rack 1 varies. There is a minimum of two engagement segments necessary: in general they are arranged at the corners of a regular polygon. Fig. 4 (not shown) illustrates a quadruplex engagement body (28) pressed into engagement with the rack 1 by an opposed flexible rubber roller (25) also serving to support a loadengaging mandrel (24). Fig. 7 shows an embodiment with an engagement body 38 having two engagement elements in the form of pins 41 and rotatable by a lever 44. The pins 41 are pressed into engagement with the rack 1 by a corrugated spring band, carrier element 3 being guided on the rack 1 and supporting the engagement body 38 in slots 37 and the load-engaging mandrel 24 on a rivet 36.
GB2290871A 1970-03-03 1971-04-19 Lifting gear, particularly lifting jack Expired GB1298534A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702009797 DE2009797C (en) 1970-03-03 Lifting gear, especially jack

Publications (1)

Publication Number Publication Date
GB1298534A true GB1298534A (en) 1972-12-06

Family

ID=5763852

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2290871A Expired GB1298534A (en) 1970-03-03 1971-04-19 Lifting gear, particularly lifting jack

Country Status (3)

Country Link
JP (1) JPS5124178B1 (en)
FR (1) FR2081646B1 (en)
GB (1) GB1298534A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2293972A (en) * 1994-10-14 1996-04-17 Dunlop Cox Ltd An adjustment device, especially for vehicle seat height
EP0825361A2 (en) * 1996-08-16 1998-02-25 Friedrich Mag. Ing. Blaha Adjustment mechanism

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57172239A (en) * 1981-04-17 1982-10-23 Toshiba Corp Detection circuit of temperature and humidity
JPS57211541A (en) * 1981-06-23 1982-12-25 Sintokogio Ltd Measurement of moisture content in molding sand and its device
DE3319813A1 (en) * 1983-02-19 1984-08-23 C. Rob. Hammerstein Gmbh, 5650 Solingen HEADSTOCK ADJUSTMENT, ESPECIALLY FOR TILT ADJUSTMENT OF MOTOR VEHICLE SEATS

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE70706C (en) * G. H. BRYANT und V. BEAURE-GARD in Newton bezw. Boston, Massach., V. St. A Rack winch with slide for lifting and aligning railway tracks and the like
DE935754C (en) * 1954-02-14 1955-11-24 Neuhaus Geraetebau K G Jack
DE1258572B (en) * 1966-12-05 1968-01-11 Alexander Hahn Lifting device designed as a jack

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2293972A (en) * 1994-10-14 1996-04-17 Dunlop Cox Ltd An adjustment device, especially for vehicle seat height
WO1996011819A1 (en) * 1994-10-14 1996-04-25 Dunlop Cox Ltd. Height adjustment device for vehicle seats
EP0825361A2 (en) * 1996-08-16 1998-02-25 Friedrich Mag. Ing. Blaha Adjustment mechanism
EP0825361A3 (en) * 1996-08-16 1998-05-20 Friedrich Mag. Ing. Blaha Adjustment mechanism
AT410126B (en) * 1996-08-16 2003-02-25 Friedrich Mag Ing Blaha adjustment

Also Published As

Publication number Publication date
FR2081646B1 (en) 1976-06-11
DE2009797A1 (en) 1972-02-03
FR2081646A1 (en) 1971-12-10
JPS5124178B1 (en) 1976-07-22

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees