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A USEFUL VEHICLE FOR ROAD AUTHORITIES.

29th April 1924, Page 27
29th April 1924
Page 27
Page 27, 29th April 1924 — A USEFUL VEHICLE FOR ROAD AUTHORITIES.
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Which of the following most accurately describes the problem?

A Leyland Wagon which Can be Used for a Variety of Purposes.

WITH THE better advent of the bett

V V days of the year and the imminence of heavy summer traffic, municipal authorities in various parts of the country usually undertake with feverish activity the improvement of road surfaces which may have become somewhat impoverished during the winter. Tarspraying is one of the tasks which face these authorities, and for the purpose of enabling them to undertake this work expeditiously mechanical road transport vehicles are often brought into use.

Some of these machines possess an all-round usefulness in that they can readily be converted from one guise to another. Such a machine is that which is illustrated on this page. It comprises a •Leyland steam wagon, in which the company's standard 6-ton chassis is employed. On tarred surfaces this vehicle may be used as a sprayer, whilst. these is a grouting attachment for use -with setts. It is equally useful for the conveyance of broken granite and'chippings, in which case a suitable body can quickly be fitted, whilst during the hot. weather, when the roads are covered with dust, it can be transformed into a watering wagon.

The illustrations show the vehicle fitted with a tank body and mechanism for spraying tar, although these can be readily removed and a Uppity,body substituted, the oil pump for the hydraulic operating gear of which is fixed below the frame on the off side and is driven by a sliding spur wheel from another located on an extension of the trans verse camshaft. Oil is thus supplied -under pressure to the two rams located beneath the steel body, which is capable of accommodating 6 tons of broken granite or chippings.

The capacity of the tank which can he fitted to the vehicle is 1,000 cubic ft., and it can he used for carrying water or tar. When spraying tar, a Coleman flapper-type sprayer is fitted, and this is driven from the engine through bevel gearing and a chain drive. The spraying pipe is so arranged that only onehalf of the normal width may be used if necessary, whilst the quantity of liquid forced through it is controlled by a lever and quadrant situated at the rear of the machine.

The filling of the tank can be readily accomplished, steam being allowed to pass through an ejector fitted at the forward end on the top of the tank. A swivelling flexible pipe is mounted at the rear of the tank, through which the liquid is drawn, only a 15-in, vacuum being required to enable expeditious filling with tar to be accomplished. To ensure a free flow of the tar, steam.

heating coils are fitted inside the tank, and as they exhaust into the water tank no loss is incurred by their use. Two manholes are fitted to the tank, that on the top being reached by a steel ladder affixed to the off side.

The Leyland 6-ton steam-wagon chassis has a vertical thimble-tube boiler working at a pressure of 250 lb. ner sq. in., and this enables gradients of one in six to be negotiated and successfully treated. This fact should prove an additional attraction to some road authorities, who very often delay the. repair of short but steep inclines on account of the inability, more imaginary than real perhaps, to obtain a machine which will satisfactorily accomplish the work.

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