GB2213783A - Adjustable length hand crank for jack - Google Patents
Adjustable length hand crank for jack Download PDFInfo
- Publication number
- GB2213783A GB2213783A GB8729467A GB8729467A GB2213783A GB 2213783 A GB2213783 A GB 2213783A GB 8729467 A GB8729467 A GB 8729467A GB 8729467 A GB8729467 A GB 8729467A GB 2213783 A GB2213783 A GB 2213783A
- Authority
- GB
- United Kingdom
- Prior art keywords
- handle
- axis
- rotatable member
- connecting means
- vehicle
- 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.)
- Withdrawn
Links
- 238000010276 construction Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 102000004726 Connectin Human genes 0.000 claims 1
- 108010002947 Connectin Proteins 0.000 claims 1
- 101100536354 Drosophila melanogaster tant gene Proteins 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 239000002184 metal Substances 0.000 description 2
- 208000008103 Amniotic Band Syndrome Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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
- B66F13/00—Common constructional features or accessories
-
- 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
- B66F3/12—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated comprising toggle levers
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
- G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
- G05G1/08—Controlling members for hand actuation by rotary movement, e.g. hand wheels
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
- Feeding Of Workpieces (AREA)
- Medicines Containing Plant Substances (AREA)
- Auxiliary Devices For Music (AREA)
- Magnetic Heads (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Valve Device For Special Equipments (AREA)
- Auxiliary Devices For And Details Of Packaging Control (AREA)
- Vehicle Body Suspensions (AREA)
- Lock And Its Accessories (AREA)
Abstract
A vehicle jack 10 has a body 18 with a ground-engaging foot 24 and a vehicle engaging member 28 mounted on the body 18 for movement relative to the body 18 in the operation of the jack by a drive assembly 12 to engage and move part of a vehicle. The assembly 12 comprises a shaft 14 rotatable about an axis A and a headed member 30 secured to the shaft 14. A handle 36 for rotating the shaft 14 about the axis A is carried by the member 30 with part of the member projecting through a slot in the handle 36 so that the handle 36 can be moved relative to the axis A to adjust the operational position of the handle 36 e.g. to avoid a hand of an operator striking the ground when using the jack.
Description
( 1 "' "" 13 7 8 3) /- 9 1 DRIVE ASSEMBLY This invention relates to a
drive assembly for rotating a rotatable member about an axis, and especially to a drive assembly for an oper.ting shaft of a vehicle jack.
In providing means for rotating rotatable memberS which are operable manually, especially for operating vehicle jacks, various handles have been proposed, some of which are detachable and others of which may be permanently connected to the member to be rotated.
In the operation of certain rotatable members it has been found that as the member is rotated to effect a further movement, for example the raising of a vehicle by a jack, the position of the rotatable member changes and the possibility arises of the operating handle fouling a part of the vehicle or approaching the ground closely so that great care has to be exercised by the operator to avoid injuring himself.
In order to overcome this possible difficulty, it is proposed, according to the invention, to provide a handle the position of which relative to the axis of rotation of the rotatable member, is adjustable.
In one aspect the invention may be considered to provide a drive assembly for rotating a rotatable member about an axis comprising connecting means secured to the rotatable member and a handle carried by the connecting means for rotating the rotatable member about its axis, the construction and arrangement being such that the handle can be moved relativ"e to the axis of rotation to move a handle portion of the handle towards or away from the axis of rotation, thus to adjust the operational position of the handle portion.
In another aspect the invention may. provide a vehicle jack comprising a body provided with a groundengaging portion, a vehicle-engaging portion mounted on the body and adapted to be moved, in the operation of the 1 01 2 jack, by a drive assembly relative to the body to engage and move a part of a vehicle, the drive assembly comprising a rotatable member mounted for rotation about an axis, connecting means secured to the rotatable member and a handle carried by the connecting means for rotating the rotable member about its axis wherein the handle can be moved relative to the axis of rotation to adjust the operational position of a handle portion of the handle.
Preferably the handle is captive with the connecting member.
Preferably the handle can be freely moved relative to the connecting means when the handle is not under load to adjust it to an appropriate operational position but locks in said operational position when the handle is operated to rotate the rotatable member. Suitably the handle locks by frictional engagement between the handle and the connecting means.
In a preferred assembly, the handle comprises a slot and the connecting means comprises a headed stud secured to the rotatable member, projecting at right angles to the axis of rotation and passing through the slot. The handle can be moved to slide the stud along the slot to adjust it to an appropriate operational position and is suitably constructed so that a handle portion of the handle, in a desired operational position, is p arallel with the axis of rotation.
There now follows a detailed description to be read with reference to the accompanying drawings of a jack embodying the invention. It will be realised that this jack has been selected for description to illustrate the invention by way of example.
In the accompanying drawings:- Figure 1 is a view in side elevation of a jack embodying the invention; Figure 2 is a view in front elevation of the jack shown in Figure 1; and 1 3 Figure 3 is a view of part of a handle for a jack, of modified construction.
The jack 10 comprises a drive assembly 12 for rotating a rotatable member namely a screw threaded shaft 14 about an axis A. The shaft 14 is received in a screw threaded nut 16 pivotally mounted in a body portion 1. 8s of the jack 10.. Apart from the drive assembly, the jack 10 is of generally known construction and further comprises an arm 20 pivotally mounted by a pivot 26 on the body 18 between a foot portion 24 and the nut 16. An end portion of the shaft 14 is mounted for rotation in a bearing assembly 22 carried on an end portion of the arm 20 remote from its pivot 26. Thus rotation of the shaft 14 in the nut 16 is effective to move the bearing assembly 22 towards or away from the nut 16, whereby to cause the arm 20 to pivot about its pivot 26. At an outermost end portion remote from the pivot 26 is mounted a vehicle engaging member 28. By pivotal movement of the arm 20 about its pivot 26, when the foot 24 is in engagement with the floor, the vehicle engaging member 28 can be moved into engagement with a portion of a vehicle whereby to raise part of the vehicle from the ground for example to permit the changing of a wheel, in known manner.
The drive assembly 12 for rotating the shaft 14 comprises connecting means including a member 30 secured to. an outer end portion of the shaft 14 remote from the bearing 22. The member 30 has a head portion 32 arran. cred to provide an annular groove 34 around the member 30. A control axis X of the ann ular groove is positioned at right angles to"the axis A of rotation of the shaft 14. A handle 36 for rotating the shaft 14 about its axis A is carried by the member 30. The construction and arrangement is such that the handle 36 can be moved relative to the axis of rotation A to move a handle portion 38 of the handle 36 towards or away from the axis 4 of rotation A, thus to adjust the operational position of the handle portion 38 and to adjust its operational radius about the axis A.
In order to permit this 'relative movement, the handle 36 is provided with a slot 40 through which part of the member 30 projects, the handle being retained in place on the member 30 by the head portion 32 with the handle received in the groove 34 and the axis X of the,ht angles member 30 extending through the slot 40 at rig thereto. The handle 36 may thus be slid, with the member 30 moving along the slot 40, to move the handle portion 38 closer to or further away from the axis X of the member 30. Portions of the handle 36 slide along the groove 34. In Figures 1 and 2, the handle 36 is shown with its handle portion 38 at the maximum radius from the axis X of the member 30 and from the axis of rotation A of the shaft 14. When it is wished to operate the jack 10 by rotating the shaft 14, the handle 36 is positioned with its handle portion 38 in a position lying generall-y parallel with the axis A (as shown in Figure 1 of the drawings) and the handle portion 38 is rotated about the axis A whereby to rotate the shaft, driving the shaft through the member 30. If it is wished to shorten the radius of operation of the handle portion 36, the handle 36 is moved to slide the projecting portion of the member 30.- along the slot 40 to a selected operational position along the slot, whilst still retaining the handle portion 38 parallel with the axis A. Upon applying driving action to the handle portion 38, the frictional engagement between the handle 36 and the various parts of the member 30 is sufficient to prevent the handle 36 sliding relative to the member 30. However, if desired, means can be provided for clamping the handle in an adjusted position.
1 p C 1 f In the accompanying drawings, the handle is formed of steel rod bent to a desired shape: however, the handle 36 may alternatively be provided by a flat metal member or other means, with a suitably shaped slot cut in it. In the illustrative jacks,;,?here the handle is made of bent steel rod, the rod may be bent in situ around a former, after it has been placed in position along the groove 34 of the member 30. However, the slot 40 may be formed first, if desired, and the handle placed in position on the member 30, the head 32 being secured in place after the handle has been positioned first on a projecting shaft portion 33 projecting from a body 31 of the member 30, the groove 34 being provided by the shaft portion 33 bounded at either side by the body 31 and head 32. In Figure 1 the handle 36 is made of two portions of metal bar welded together, a first part being provided by a generally straight portion but one end portion of which is bent to provide the handle portion, and the second part being provided by a generally U-shaped piece of bar, the arms of the U being welded to the straight portion to provide the slot 40. In the modified form of handle shown in Figure 3, a single piece of steel rod has been bent to provide the handle 36 and the slot 40. The welded construction may be slightly stronger, as it prevents the slot 40 opening out should an excessive load be applied to;' the jack.
The handle portion 38 comprises a sleeve carried for rotation on a part of the rod which has been bent so that it lies substantially at right angles to the main straight portion of the handle 36. When the jack is out of use, the arm 20 occupies the position in which it is shown in chain dot line in Figure 1 and the member 30 and shaft 14 occupy the positions in which they are shown in - line in Figure 1. When in this position, the chain dol', handle 36 can be rotated about the axis X so that it occupies a position lying substantially parallel with the f L 6 body 18 of the jack thus compactly folded away for use the jack, the handle rotate it to a suitable straight portion of the right angles to the axis Figure 1, with the handle A.
The drive assembly of the illustrative jack is cheap and simple in operation and there is no possibility of the handle 36 becoming separated from the remainder of the jack and lost, for example when changing a wheel. Because it is possible to adjust the operating position of the handle 36 and, in particular, the handle portion 38, it is possible for the operator to select an operating position where the risk of injuring himself by contact with the ground or a vehicle which is being jacked up is minimised.
ensuring that the jack can be storage. When it is desired to is pivotted about the axis X to operating position where the handle lies substantially at A of the shaf t 14 as shown in portion 38 parallel to the axis 1 r 7
Claims (1)
1. A vehicle jack comprising a body provided with a ground-engaging portion, a vehicle-engaging portion mounted on the body and adapted to be moved, in the operation of the jack, by a drive assembly relatIve to the body to engage and move a part of a vehicle, the drive assembly comprising a rotatable member mounted for rotation about an axis, connecting means secured to the rotatable member and a handle carried by the connecting means for rotating the rotatable member about its axis wherein the handle can be moved relative to the axis of rotation to adjust the operational position of a handle portion of the handle.
2. A vehicle jack according to claim 1 so constructed and arranged that the handle can be freely moved relative to the connecting means when the handle is not under load whereby to adjust it to an appropriate operational position but locks in said operational position when the handle is operated to rotate the rotatable member.
3. A vehicle jack according to claim 2 wherein the handle locks by frictional engagement between the handle and the connecting means.
4. A vehicle jack according to any one of the preceding claims wherein the handle is captive with the connectin=g member.
5. A vehicle jack according to any one of the preceding claims wherein the handle is carried for movement on the connecting means to adjust the operational position in such a way that a handle portion of the handle, in a desired operational position, is parallel with the axis of rotatibn of the rotatable member.
1 8 6. A vehicle jack according to any one of the preceding claims wherein the handle comprises a slot and the connecting means comprises a headed stud secured to the rotatable member, projecting at right angles to the axis of rotation and passing through the slot.
1. A vehicle jack according to claim 6 wherein, for--stora.ale, the handle can be rotated about an axis of the stud at right angles to the axis of the rotatable member so that it occupies a position lying substantially parallel with the body of the jack.
8.,k -..-ehicle jack according to either one of claims 6 and 7 wherein the handle is formed of steel rod bent to a desired shape.
g. A drive assembly for rotating a rotatable member about an a.-.-is comprising connecting means secured to the rotatable member and a handle carried by the connecting means for rotating the rotatable member about its axis, the construction and arrangement being. such that the handle can be moved relative to the axis of rotation to move a handle portion of the handle towards or away from the axis of rotation, thus to adjust the operational posit-lion of the handle portion.
10. A vehicle jack constructed arranged and adapted to operate subs tant 4 ally as hereinbefore described, wi-L-h reference to the accompanying drawings.
Published 1988 at The Patent Office. Statae.House- 66'11 High Holborn. London TWCUIR 4TR Further copies may be obtained frorn The Patent Office, Sales Branch. St Mazy Cray. Orpington. Kent BRS 3RD Printed by Multiplex teChniques; It-d. St Mazy Cray. Kent Con 1 87 il
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8729467A GB2213783A (en) | 1987-12-17 | 1987-12-17 | Adjustable length hand crank for jack |
| ES198888311719T ES2028305T3 (en) | 1987-12-17 | 1988-12-09 | VEHICLE JACK. |
| EP88311719A EP0321164B1 (en) | 1987-12-17 | 1988-12-09 | Vehicle jack |
| AT88311719T ATE69784T1 (en) | 1987-12-17 | 1988-12-09 | JACK. |
| DE8888311719T DE3866525D1 (en) | 1987-12-17 | 1988-12-09 | CAR LIFT. |
| JP63318350A JPH01308396A (en) | 1987-12-17 | 1988-12-16 | Car jack |
| PT89240A PT89240B (en) | 1987-12-17 | 1988-12-16 | MONKEY FOR VEHICLES |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8729467A GB2213783A (en) | 1987-12-17 | 1987-12-17 | Adjustable length hand crank for jack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB8729467D0 GB8729467D0 (en) | 1988-02-03 |
| GB2213783A true GB2213783A (en) | 1989-08-23 |
Family
ID=10628641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8729467A Withdrawn GB2213783A (en) | 1987-12-17 | 1987-12-17 | Adjustable length hand crank for jack |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0321164B1 (en) |
| JP (1) | JPH01308396A (en) |
| AT (1) | ATE69784T1 (en) |
| DE (1) | DE3866525D1 (en) |
| ES (1) | ES2028305T3 (en) |
| GB (1) | GB2213783A (en) |
| PT (1) | PT89240B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2651491A1 (en) * | 1989-09-05 | 1991-03-08 | Fabrication Accessoires Automo | Jack for raising a load, and particularly, a motor vehicle |
| DE4024809A1 (en) * | 1990-08-04 | 1992-02-06 | Storz E A Kg | CAR LIFT |
| DE29716460U1 (en) * | 1997-09-15 | 1997-12-11 | Eurohitch Sattelkupplungen GmbH, 33758 Schloß Holte-Stukenbrock | Hand crank |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB220773A (en) * | 1923-07-11 | 1924-08-28 | Brayknawt Super Mangle Company | Improvements in or relating to the mounting of the operating handles upon hand-operated machines |
| GB230755A (en) * | 1924-11-15 | 1925-03-19 | William Nicholson Brown | Improvements relating to the jacking up of motor vehicles |
| GB244213A (en) * | 1924-10-09 | 1925-12-17 | George Clement Jenks | Improvements in or relating to handles for imparting rotary movement |
| GB349335A (en) * | 1930-06-14 | 1931-05-28 | Douglas Motors Ltd | Lifting and conveyor trucks |
| GB631401A (en) * | 1946-07-29 | 1949-11-02 | William Thomas Whittingslowe | Improvements in wringers |
| GB814128A (en) * | 1955-10-11 | 1959-05-27 | Lewis Frederick Alexander | Improvements in or relating to cranks for pedal-operated apparatus |
| US3789696A (en) * | 1973-01-10 | 1974-02-05 | W Beam | Pedal extenders for bicycle |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE388798A (en) * | ||||
| US1499474A (en) * | 1923-06-15 | 1924-07-01 | Ralph H Price | Crank |
| FR622867A (en) * | 1926-10-09 | 1927-06-09 | Combined crank for maneuvering car jacks and all other vehicles | |
| FR660610A (en) * | 1928-09-20 | 1929-07-13 | Rod for jack control | |
| FR1290971A (en) * | 1961-03-08 | 1962-04-20 | Bretton Ets | Improvements in the assembly of cranks, in particular for fishing reels |
| AT358769B (en) * | 1974-06-07 | 1980-09-25 | Bilstein August Fa | CAR LIFT |
| FR2473657A1 (en) * | 1979-12-05 | 1981-07-17 | Slyper Jean | Extendable turning key - has pair of telescopic tubes with key at one end of inner tube and crank at opposite end of outer |
| JPS58113097A (en) * | 1981-12-27 | 1983-07-05 | 株式会社 高田工場 | Jack |
| FR2558817B1 (en) * | 1984-01-26 | 1987-04-24 | Astra Ets Florimond Chabardes | IMPROVEMENT IN LOSANGES JACK SCREW DRIVE SYSTEMS |
| DE3510196C2 (en) * | 1985-03-21 | 1995-11-23 | Storz E A Kg | Jack |
| US4586696A (en) * | 1985-10-25 | 1986-05-06 | Chrysler Corporation | Vehicle lifting jack with integral stowable crank handle |
-
1987
- 1987-12-17 GB GB8729467A patent/GB2213783A/en not_active Withdrawn
-
1988
- 1988-12-09 DE DE8888311719T patent/DE3866525D1/en not_active Expired - Fee Related
- 1988-12-09 EP EP88311719A patent/EP0321164B1/en not_active Expired - Lifetime
- 1988-12-09 ES ES198888311719T patent/ES2028305T3/en not_active Expired - Lifetime
- 1988-12-09 AT AT88311719T patent/ATE69784T1/en active
- 1988-12-16 JP JP63318350A patent/JPH01308396A/en active Granted
- 1988-12-16 PT PT89240A patent/PT89240B/en not_active IP Right Cessation
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB220773A (en) * | 1923-07-11 | 1924-08-28 | Brayknawt Super Mangle Company | Improvements in or relating to the mounting of the operating handles upon hand-operated machines |
| GB244213A (en) * | 1924-10-09 | 1925-12-17 | George Clement Jenks | Improvements in or relating to handles for imparting rotary movement |
| GB230755A (en) * | 1924-11-15 | 1925-03-19 | William Nicholson Brown | Improvements relating to the jacking up of motor vehicles |
| GB349335A (en) * | 1930-06-14 | 1931-05-28 | Douglas Motors Ltd | Lifting and conveyor trucks |
| GB631401A (en) * | 1946-07-29 | 1949-11-02 | William Thomas Whittingslowe | Improvements in wringers |
| GB814128A (en) * | 1955-10-11 | 1959-05-27 | Lewis Frederick Alexander | Improvements in or relating to cranks for pedal-operated apparatus |
| US3789696A (en) * | 1973-01-10 | 1974-02-05 | W Beam | Pedal extenders for bicycle |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2028305T3 (en) | 1992-07-01 |
| PT89240B (en) | 1995-05-04 |
| JPH0427159B2 (en) | 1992-05-11 |
| EP0321164B1 (en) | 1991-11-27 |
| ATE69784T1 (en) | 1991-12-15 |
| DE3866525D1 (en) | 1992-01-09 |
| JPH01308396A (en) | 1989-12-13 |
| PT89240A (en) | 1989-09-14 |
| EP0321164A1 (en) | 1989-06-21 |
| GB8729467D0 (en) | 1988-02-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |