I Spring Design
Page 55
If you've noticed an error in this article please click here to report it so we can fix it.
W design of road spring—the Goliath—developed by Aropolitan Springs Ltd., is claimed to give an improved and also a longer life than conventional leaf springs. Soaliath is similar in general construction to normal types rig but a number of the middle leaves are extended in The upper one of these has its ends radiused upwards load is applied to the spring these come into contact e main spring top leaves to give a two-rate effect. The spring is intended to overcome the problem of breakages on certain types of operation and Metropolitan Springs carries out conversions of the existing vehicle suspension.
Some of the original leaves arc retained, for example the main and second leaf, and others are replaced. There is little increase in spring weight, but the load capacity is considerably greater—from 15 cwt. to 22.5 cwt. is quoted in one case. Prices vary, but as an example the cost of converting the rear springs of a B.M.C. 30-cwt. vehicle is £5 15s. per spring.
Makers: Metropolitan Spr:ngs Ltd., 19 Silehester Road, London, W.I0.
Tyres and Speeds A LEAFLET just issued by India Tyres Ltd.—" Facts About Commercial and P.T. Tyres at Speed "—contains information on the maximum speeds at which tyres should be run depending upon the conditions under which the vehicle to which they are fitted will be subjected. Tyres for both goods and public service vehicles are covered.
Copies can be obtained from any India tyre depot or from India Tyres Ltd., P.O. Box No. 5, Inchinnan, Renfrew.
Windscreen Washers A RANGE of windscreen washers introduced by Wingard Ltd. includes a model with semi-automatic operation and one designed specifically for commercial vehicles. The name Kleerscreen has been given to the four-model range.
All four have pump units operated manually, but whereas on three of them the plunger is pressed to produce the cleaning jet, on the Automatic model the plunger is pulled and in returning to its original positiondelivers fluid to the screen for a period of 6 seconds. Pump displacement on this model is 19 cc. compared with 5 cc. on the Manual version and 12-5 cc. on the commercial vehicle unit. These three windscreen washers are supplied with a bag-type container made of plastics sheet and with a capacity of 2 pints. The main difference between them and the fourth model. the Manual Standard, is that the container for this is a plastics bottle with a capacity of just over a pint. There are also small differences between the models in the fittings supplied. With the commercial vehicle model there are alternative jets for forward-control vehicles.
K1 eerscreen washers are sold in kit form with a sachet of Meerscreen solvent.
Makers: Wingard Ltd., Kingsham Road, Chichester, Sussex. Prices: Commercial Vehicle, £1 9s. 9d.; Automatic, £1 15s. 6d.; Manual, £1 9s. 6d. with two single jets; £1 7s. 6d. with one double jet; Manual Standard, £1 3s.; Kleerscreen s o I vent. Is. per sachet (included in kits).