FOR MUNICIPAL SERVICE IN EGYPT.
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An interesting Dennis Appliance Built for Use in Alexandria.
MMOST of the important British commercial-motor manufacturers producing Municipal vehicles and appliances a different types are in a position to construct machines to meet the requirements of overseas authorities,. which, in some instances, differ from those which are encountered by municipalities in this country. One of these concerns is Dennis Bros., Ltd., of Guildford, which has supplied a number Of machines for municipal service abroad. For many years past several fire engines built by this company have been employed by the Alexandria (Egypt) Fire Brigade, and there is little question that the satisfactory service they have given has influenced the authorities in that town in the purchase of the street-sprinkling machine of the same make which is to he seen in the accompanying illustrations.
• In the main, the chassis is a standard example of the Dennis 31-tonner, in the . design of which an engine developing 70 b.h.p. is incorporated. The usual wheels and tyres employed on this model, however, have given place to disc wheels .fitted with Dunlop solid tyres of 120 mm. by 880 mm.
A particular. feature of interest is the forward tubular extension of the crankshaft, carrying a cone clutch, which drives the Dennis patent turbine pump— it is of the fire-engine type—locatedin front of the frame. The starting-handle shaft 'passes through the pump spindle itself.
The chassis carries a large rectangular tank which has a capacity of 000 gallons. This tank may be filled in one of three different ways :.(1) a length of hose at the rear may be connected to a street main, (2) an overhead supply may be admitted through the manhole at the top, or (3) the pump itself may be employed to draw water from an open source of supply. For the purpose of prithing the pump, a reserve supply of water-is retained in a special partitioned section at the front end of the tank. The manhole on the top of the tank is approached by a step on the near side of the frame which leads to a ladder running up the side of the tank.
As a high pressure is generated by the pump, a very wide stretch of road surface can be sprayed by the machine, and this is clearly indicated in one, of the illustrations. The width of spray can, of course, be varied to suit the requirements of the moment. The water-outlet apertures are not in the form of perforations, as is quite often the case, but consist of slots, which, It is claimed; are far less likely to become choked by particles of foreign matter.