GB2080235A - Portable lifting device - Google Patents

Abstract

Portable lifting apparatus comprises a frame which provides for easy transportation and which includes a pair of upright members supporting a cross beam assembly including a cross beam member having fitted at one end thereof a tubular extension member to which a winch is secured, the tubular extension member, when disconnected from an upright member, being hinged so as to fold back against the cross beam member for storage purposes. <IMAGE>

Description

SPECIFICATION Portable lifting device The framework of the lifting device is constructed in easily fitted and removable square and round standard size steel tubing.

The lifting mechanism is conventional type geared winch which operates a steel nylon cable running through two cast iron pulleys on steel bushes.

The bushes are secured by steel bolts and the winch is welded to a hinged piece of steel box section. The nylon cable is spliced to the winch. The final lifting device has five separate parts.

The device has two "T" shaped box section feet into which, round steel up-rights slot into. The cross top steel square beam which contains all the mechanism for lifting. The box section has fittings on either end which slot on top of the round steel tube up-rights.

The winch mechanism fold up to the top beam for easy transportation and storage.

The main operational value ofthis device is its simplicity and safety in lifting car engines out for overhaul or replacement as it straddles over the vehicie.

The lifting device, because of its easy assembly and dismantling, can be carried in the average family car and has all the advantages for the "Do It Yourself" motorist. Its application has also advantages over existing lifting devices used in commercial service garages and racing mechanism used on various motor racing circuit by mechanics.

1. Has the best lifting power to cost ratio.

2. Has the best lifting power to weight ratio.

3. Has the best lifting powerto mass ratio.

4. Has the best lifting power to size ratio.

5. Has the best lifting power to simplicity ratio.

6. Has the best lifting power to assembly time ratio.

7. Simple one man operation, good for D.l.Y.

man.

8. Requires very little maintenance.

9. Consumes very little ground area and/or space, whether in or out of use.

10. Consumes no space under hook.

11. Consumes no space under car.

12. Cheap and simple parts replacement.

13. Can be transported on a roof rack or inside a family car.

14. Stores insignificantly in average garage.

15. Can be carried over rough ground and used anywhere.

16. Has a very quick and powerful lift.

17. Slotting round tubing into square tubing, for quick assembly, has the best rigidity to friction ratio.

New claims filed on 16-9-81.

I Superseded claims 1-17.

New or amended claims: 1. Portable lifting apparatus comprising two bases or foot parts, an upright member arranged to extend from each base or foot part and a cross beam assembly adapted to bridge the ends of the upright members remote from the bases to form a rigid frame, the cross beam assembly including a cross beam member, an extension member fitted to one end of the cross beam member and hinged to fold back towards the cross beam member for storage purposes and arranged normally to extend downwardly with respect to the cross beam member and to receive one of the upright members which serves to lock it in position and prevent it folding to the storage position, a winch secured to the extension member, and a main guide supported by the cross beam member to receive in use a rope cable or the like, which can in use be used to lift by means of the winch a ioad positioned beneath the cross beam member.

2. Lifting apparatus as claimed in claim 1, wherein the extension member is fabricated of tubular material to form an L-shaped corner piece, from one leg of which the cross beam member is arranged to extend and the other leg of which is hinged to fold back towards the cross beam member for storage purposes but normally to receive the upright member which serves to lock it in position.

3. Lifting apparatus as claimed in claim 2, comprising a further L-shaped corner piece secured to the end of the cross beam member remote from the extension member so as to form a part of the cross beam assembly and to receive one of the upright members.

4. Lifting apparatus as claimed in any preceding claim, wherein each base comprises a tubular socket part of generally square cross section for receiving one of the upright members.

5. Lifting apparatus as claimed in claim 4, wherein each socket part is fabricated to form a part of a T-shaped base constructed of tubular material having a generally square cross section.

6. Lifting apparatus as claimed in any preceding claim, wherein the upright members are tubular and of generally circular cross section.

7. Lifting apparatus as claimed in any of claims 2 to 6, wherein the cross beam assembly comprises a further guide which is secured to the L-shaped corner piece forming the extension member so as to guide the rope or cable from the winch to the main guide.

8. Lifting apparatus as claimed in any preceding claim, wherein the rope or cable is fabricated of nylon.

9. Lifting apparatus as claimed in any preceding claim, wherein the winch comprises a handle coupled via gears to a spindle or drum on which the rope or cable is collected.

10. Lifting apparatus substantially as hereinbefore described with reference to the accompanying drawings.

**WARNING** end of DESC field may overlap start of CLMS **.

Claims (10)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Portable lifting device The framework of the lifting device is constructed in easily fitted and removable square and round standard size steel tubing. The lifting mechanism is conventional type geared winch which operates a steel nylon cable running through two cast iron pulleys on steel bushes. The bushes are secured by steel bolts and the winch is welded to a hinged piece of steel box section. The nylon cable is spliced to the winch. The final lifting device has five separate parts. The device has two "T" shaped box section feet into which, round steel up-rights slot into. The cross top steel square beam which contains all the mechanism for lifting. The box section has fittings on either end which slot on top of the round steel tube up-rights. The winch mechanism fold up to the top beam for easy transportation and storage. The main operational value ofthis device is its simplicity and safety in lifting car engines out for overhaul or replacement as it straddles over the vehicie. The lifting device, because of its easy assembly and dismantling, can be carried in the average family car and has all the advantages for the "Do It Yourself" motorist. Its application has also advantages over existing lifting devices used in commercial service garages and racing mechanism used on various motor racing circuit by mechanics. CLAIMS

1. Has the best lifting power to cost ratio.

2. Has the best lifting power to weight ratio.

3. Has the best lifting powerto mass ratio.

4. Has the best lifting power to size ratio.

5. Has the best lifting power to simplicity ratio.

6. Has the best lifting power to assembly time ratio.

7. Simple one man operation, good for D.l.Y.

man.

8. Requires very little maintenance.

9. Consumes very little ground area and/or space, whether in or out of use.

10. Lifting apparatus substantially as hereinbefore described with reference to the accompanying drawings.

10. Consumes no space under hook.

11. Consumes no space under car.

12. Cheap and simple parts replacement.

13. Can be transported on a roof rack or inside a family car.

14. Stores insignificantly in average garage.

15. Can be carried over rough ground and used anywhere.

16. Has a very quick and powerful lift.

17. Slotting round tubing into square tubing, for quick assembly, has the best rigidity to friction ratio.

New claims filed on 16-9-81.

I Superseded claims 1-17.

New or amended claims:

1. Portable lifting apparatus comprising two bases or foot parts, an upright member arranged to extend from each base or foot part and a cross beam assembly adapted to bridge the ends of the upright members remote from the bases to form a rigid frame, the cross beam assembly including a cross beam member, an extension member fitted to one end of the cross beam member and hinged to fold back towards the cross beam member for storage purposes and arranged normally to extend downwardly with respect to the cross beam member and to receive one of the upright members which serves to lock it in position and prevent it folding to the storage position, a winch secured to the extension member, and a main guide supported by the cross beam member to receive in use a rope cable or the like, which can in use be used to lift by means of the winch a ioad positioned beneath the cross beam member.

2. Lifting apparatus as claimed in claim 1, wherein the extension member is fabricated of tubular material to form an L-shaped corner piece, from one leg of which the cross beam member is arranged to extend and the other leg of which is hinged to fold back towards the cross beam member for storage purposes but normally to receive the upright member which serves to lock it in position.

3. Lifting apparatus as claimed in claim 2, comprising a further L-shaped corner piece secured to the end of the cross beam member remote from the extension member so as to form a part of the cross beam assembly and to receive one of the upright members.

4. Lifting apparatus as claimed in any preceding claim, wherein each base comprises a tubular socket part of generally square cross section for receiving one of the upright members.

5. Lifting apparatus as claimed in claim 4, wherein each socket part is fabricated to form a part of a T-shaped base constructed of tubular material having a generally square cross section.

6. Lifting apparatus as claimed in any preceding claim, wherein the upright members are tubular and of generally circular cross section.

7. Lifting apparatus as claimed in any of claims 2 to 6, wherein the cross beam assembly comprises a further guide which is secured to the L-shaped corner piece forming the extension member so as to guide the rope or cable from the winch to the main guide.

8. Lifting apparatus as claimed in any preceding claim, wherein the rope or cable is fabricated of nylon.

9. Lifting apparatus as claimed in any preceding claim, wherein the winch comprises a handle coupled via gears to a spindle or drum on which the rope or cable is collected.