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TROLLEY AND TRANSMISSION JACKS
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VEHICLES get bigger and heavier, repairs need to be completed faster and handling of the various major components demands a degree of mechanization. Units for handling transmissions and differentials, and wheeled or trolley jacks with greater lifting capacities than required hitherto are the subject of this review.
APPLIED POWER (UK) LTD
Estate Road, Newhaven, Sussex, TVVO TYPES of transmission jack are included in the wide range of Blackhawk equipment produced by this company. There are five pillar-type jacks for use in pits and one model similar in concept to a normal trolley jack.
The pillar-type jacks have their hydraulic ram mounted on a frame with castors fitted at the ends of each spoke. Three of these jacks have a capacity of 9cvvt and while one has a minimum height of 6in. and can be raised to 29in., the other two have a lowered height for the lifting frame of 32in and 41in. respectively and have a maximum height of 6ft. The other two pillartype transmission jacks have capacities of 18cwt and the adaptor height of one is 8.125in. with a maximum of 31.125in. while the other goes from 43in. to just under 6ft. In all cases a similar unit-support frame is used, this being adjustable to various sizes of unit.
The trolley-type transmission jack is suitable for lifting 6.25cwt and with a minimum height of 5.5in. the lifting cradle can go up to 24in. The model has two fixed wheels and two castors (at the operating handle end} and the lifting frame has adjustable pillars to which are attached chains for tying down the unit being supported.
ARMSTRONG PATENTS CO LTD
Eastgate, Beverley, Yorks.
THE four Armstrong hydraulic trolley jacks have capacities of 1.5, 3, 5 and 10 tons. The smallest model is compact and has a removable handle so that it can be stowed easily in a service van while a feature of the three lighter models is that there is a foot-operated pedal which allows the saddle to be moved up to the jacking position very quickly.
In all cases there are two fixed wheels at the saddle end and a pair of castors at the rear, and on the heavier models there is a control lever on the handle with three positions—one frees the handle for pumping, the second locks the handle in any one of three positions for safety and the thirli is selected for lowering the saddle.
Weight of the 1.5-ton jack is 881b. and the others range from 165 to 3331b. Minimum saddle height is 4.7in. for the 1.5 and 3 ton, 5.5in, for the 5 ton and 5.9in. for the 10 ton. Maximum saddle heights are 19in. and 24in., 22in. and 22in. respectively. Overall length of the smallest jack is 28in. while the others range from 56 to 56.2in. to 61.4in.
As well as these trolley jacks-Armstrong produces two trolley-type transmission jacks which are similar in general design but one has a fully-adjustable lifting saddle while the other has a saddle plate which is designed to give as low a height as possible in the lowered position. Both jacks have a lifting capacity of 15. 8cwt and while the minimum saddle height of the jack with the adjustable lifting frame is 7.87in. it is 5.12in. for the second model. Maximum saddle heights are 31.5in. and 29.1 in. respectively and both models have an overall length of just less than 4ft. The adjustable saddle on the first model can be tilted 26deg forwards and backwards and lateral movement of 1.18in. is provided for. In the case of the other transmission jack the saddle can be tilted 15deg forward and 10deg backwards. In both cases there are four castors outrigged from the corners of the jack frame.
JOSEPH BRADBURY AND SONS LTD
Braintree, Essex.
THE BRADBURY Rocket range of hydraulic trolley jacks includes five models with normal lift and two high-lift designs. All models have the feature that the lifting pad can beraised from the bottom to the top position in one stroke of the operating handle.
Three of the normal-lift models are compact trolley jacks which are suitable for use on breakdown work, these being the 1.5-ton Jackette, the 4-ton Quadette and the 6-ton Sixette. Net weights are 78, 108 and 1601b. respectively and while the minimum height of the saddle for the smallest is 4in., that for the other two is 5.5in. Maximum saddle heights are 19.5in. for the Jackette and Quadette and 22in. for the Sixette.
All Rocket jacks have two fixed wheels and two castor wheels and capacities of the two high-lift models are 2.5 and 5 tons. Minimum height of the saddle is 5.5 and 6.5in. respectively and maximum heights are 37in. and 36.56in. The 5-ton normal-lift model has a similar table height in the lowered position and a maximum height of just over 24in. and the 10-ton model has similar characteristics.
V. L. CHURCHILL AND CO LTD
PO Box No. 3, London Road, Daventry, Northants.
CAPACITY of the one model of trolley jack marketed by Churchill is 1.5 tons and it is a conventional design with a pair of fixed wheels at the lifting-pad end and castors at the operating-handle end. Minimum height of the saddle is 4.5in. with the maximum 20in. but both these dimensions can be increased by 4in. with the use of a special extension.
Length of the jack chassis is 5ft, 2in. and the equipment weighs 831b. which makes it a useful addition to the equipment of a breakdown van.
THE DUNLOP CO LTD
Fort Dunlop, Birmingham, 24.
CAPACITIES from 2 up to 10 tons are catered for in the range of eight hydraulic trolley jacks made by Dunlop. In between these two
extremes there are three jacks for 2.5 tons and one each for 4, 5 and 7.5 tons. All have a pair of fixed wheels at the lifting-pad end and swivel castors on each side of the all-steel body near the operating handle: the lifting control in all cases is at the handle.
Closed height does not vary much between the models ranging from 4.5 to 6in. and the extended heights vary between 19.5 and 24in. The exception is a 2.5-ton "High Lift" model which has a maximum height of 36in, and as a result this has the longest chassis of any of them, the, dimension being 5ft. 3in. The 10-ton-Heavy Commercial-jack is the longest of the other models at 4ft. 9.5in. while the 7.5and 5-ton models are 4ft. 4.5in. long in both cases. The General Purpose 4-ton model is just less than 2ft. 6in. long making it a very convenient trolley jack for the busy workshop and it is in fact shorter than the 2-ton model.
The lightest trolley jack and one of the 2.5-ton designs will be useful for the equipment of breakdown vehicles as they weigh only 941b. and 1071b. respectively. As well as these hydraulic jacks, Dunlop also produces a mechanical jack of the same type. This has three fixed wheels, one of them near the operating handle. Rated capacity is 15cwt and with a closed height of 5.75in. the lifting pad which is fitted into the jack by a square-threaded screw has 2.375in. hand adjustment. Extended height is 15.5in. and the jack weighs 661b,
EMANUEL (GARAGE EQUIPMENT) LTD
505 York Road, London SW18.
TROLLEY JACKS produced by Emanuel come in six models ranging in lifting capacity from 1 to 12 tons. In all cases there are two fixed wheels at the front end and two swivel castors at the rear. A foot lever controls the lifting head for rapid positioning of the contact plate under the vehicle while the valve for controlling the rise and fall is at the end of the hand lever which is also used for manoeuvring the jack into position.
Total lift ranges from 11.75in. for the 1-ton model up to 26.25in. for the 1.5-ton trolley jack. Three heavier versions for 4, 7 and 12 tons have lifts of 15in., 17.25in. and 17in. respectively.
Two pillar-type transmission jacks from the company also have a foot lever for quick positioning of the unit under the vehicle and a long hand lever to provide the lifting action. These also have two fixed wheels and two castors and one model is suitable for a maximum load of 1.5 tons while the other can lift up to 8 tons.
EPCO LTD
Star Works, Leeds 7.
A TOTAL of 14 trolley jacks and two transmission jacks gives Epco a very wide range of equipment in this category in the country. Trolley jacks range in capacity from 1.25 tons up to .20 tons and special models include a long reach jack specially designed for use on pay and a high-lift jack. There is also one pillar-type and one trolley-type transmission jack.
Smallest of the trolley jacks is the 50 Mk.II which can lift 2.5 tons to a height of 24in. (minimum height of the saddle is 5in.). The operating handle is detachable and the complete jack can be dismantled and fitted into a case measuring only 33in. by 13in. by 8in. Without the case the weight is 1071b. Like all the other jacks in the Epco range this model has two fixed wheels and two castor wheels and all have a fairly low height for the saddle in the closed position, the maximum being 7in. for the 20-ton model.
The lowest capacity model in the Epco range is the 55 for 1.25 tons and this is the high-lift model which has a maximum saddle height of 36in. This is the same maximum height as a series of three jacks giving high lifts, capacities of these being 2.5.5 and 7.5 tons.
A second small-sized jack which would be useful for breakdown use is the 60 with a capacity of 4 tons, a weight of only 1321b. and a chassis length of 31in. There is also the 65 M1(.111 which has a capacity of 2 tons, is similar in size to the 60 and weighs 941b. Moving up the load scale there is the model 70 for 2.5 tons and the 80 for 5 tons which is made in a version with a chassis length of 8ft. 6in, especially for use on passenger vehicles. The four heaviest jacks are the 90 for 7.5 tons, the 100 and 100 L for 10 tons (the latter is a longreach version) and the 200 for 20 tons. The Epco Vertilift pillar-type transmission jack has a three-castor-wheel frame and its lifting head has adjustable location members to enable most transmission units and gearboxes to be accommodated. The head can be tilted up to 30deg and it can be rotated through 30deg around its own offset axis; the complete head will rotate throughout 360deg and the head control includes 3in. longitudinal traverse. Overall height in the lowest position is 45.5in. and the head can be raised to 69in. Lifting capacity is 9cwt.
The trolley-type transmission jack from Epco has four castor wheels at the corners of the chassis and this has a capacity of 18cwt. Minimum and maximum heights of the lifting head are Bin, and 29in. and the same unit location method as on the Vertilift is provided. Special adaptor plates are available for this head also and these are suitable for Bedford and Ford transmission units and there is also a hub/drum and differential adaptor. The design allows the unit fitted in the lifting head to be tilted through a total arc of 74deg with up to 30deg axial rotation around its axis.
HARVEY FROST AND CO LTD
Dunmow Road, Bishop's Stamford, Herts.
THE NIKE trolley jacks marketed by Harvey Frost are made in Sweden. There are five models, two for 1.5 tons and the others for 3, 6 and 10 tons. All of them can be supplied with large rubber-tyred wheels mounted one each sideof the frame for easy movement around the workshop and standard fittings are a pair of fixed wheels at the saddle end and outrigged. castor wheels at the rear.
The smallest jack in the Nike range weighs only 771h. and maximum and minimum height of the saddle are 20.25in. and 4.5in. respectively. The second 1.5-ton model has a high lift-while the saddle in the lowered position is just under 5in, from the ground, its maximum height is almost 35.5in.
The high lift 1.5-ton jack has a foot-operated lever for raising the saddle although like its partner, normal raising and lowering is controlled through the handle which is detachable for transport. The three heavier jacks have an automatic quick rise for the saddle, the control for the action of the jack being through a knob at the top of the handle.
The 3and 6-ton capacity jacks have a closed height to the saddle of 5.125in. and maximum heights of just under 25in. while the 10-ton model has comparable figures of 6.25in. and 26in Weights of these three jacks range from 1451b. to 320Ib.
KISMET LTD
Fenlake Works. Bedford THE KISMET KHL 1190 Unit Lift is suitable for use when removing and refitting transmissions weighing up to 9cwt. It is moulded on a four-wheel chassis and has a lifting table fitted with a safety chain and adjustable vee blocks to hold any shape of transmission unit firmly.
The Kismet transmission jack is designed to be used in conjunction with a vehicle lift or pit and in the lowest position the top face of the table is 3ft 6in. from the ground and the central ram gives a total lift of 36in. The table measures 24.5in. by 18.125in. and as well as being able to be rotated through 360deg, has hand wheels with which the table can be traversed 6in. and tilted 30deg and 15deg on each side of the horizontal. Two of the 4in. nylon wheels on the chassis are fixed while two are fully castoring for ease of manoeuvring. The table is raised by use of a foot pump and lowered by pressing a button on the chassis of the unit
LAKE AND ELLIOTT JACKS AND EQUIPMENT LTD
Braintree, Essex TWO new trolley jacks have just been introduced by Lake and Elliott, these having capacities of 5 tons and 10 tons to complement the 1.5-ton and 4-ton models previously available. Features of these hydraulic trolley jacks are large front wheels (fixedi which cope well with uneven floor surfaces and ball-bearing castors at the rear. There is also the facility in all four cases to take the saddle to the jacking position with one stroke of the handle.
Closed height of the jacks varies between 4.5in. for the 1.5-ton model to 6in. for the 10-tonner and while the two lighter models give a lift of 14.75in., the two new designs have a total lift of 16.5in. for the 5-tonner and 16in. for the 10 ton. The 1.5 ton and 4 ton are around 2ft. 8in. in overall length while the 5 and 10 ton measure 4ft. 7. Sin, and 5ft. 1.5in. respectively.
LAR KIN FORGE LTD
Spring Works, Springfield Road, Chesham. Bucks.
THIS COMPANY does not make jacks but it does produce an attachment which can be fitted to most makes of trolley jack to allow them to be used for removing and fitting transmission units. Called the Model J/AG, the unit has a locating spigot which fits on the trolley jack in place of the normal lifting pad. The spigot is connected to the middle of a steel bar which has pivoted at its ends arms that carry lifting cradles.
The J/AG can handle units weighing up to 1,0001b. and when not in use, folds into dimensions of 10in. by 5in. by 1ft. 6in. Rollerchains hold the unit being lifted rigidly on the cradles and a further arm pivoted to the spigot carries an adjustable rest to support a protruding part of the unit being lifted such as the nose of a rear-axle differential.
POWER LIFTS LTD
Colnebrook Works, Lower High St., Watford, Herts.
TWO MODELS of Hydra-Trolley made by Power Lifts can be used as transmission jacks. The Hydra-Trolley is a hydraulically operated elevating table with a platform which is raised by a centrally placed telescopic ram and stabilized by four telescopic corner pillars. Castor wheels are fitted.
The lightest model has a capacity of 7cwt and the table can be raised from a 2ft. 7in. minimum height up to 4ft. In the case of the heavier, 12.5cwt model, the minimum height is 3ft. 8in, and the maximum 5ft. 9in. In both cases a foot pump is used to raise the table with a hand lever for lowering and both models have 2ft'. 9in. by 1ft. 9in. tables.