The Cyclone Spray Nozzle.

Te Aroha News, Volume V, Issue 218, 3 September 1887, Page 7

The Cyclone Spray Nozzle.

In recommending the use of various in&ectcides, especially the caustic soda and potash solutions for the- several kinds of scale insects, we have often dwelt upon the importance of applying such insecticides by means of properly contracted spray nozzles. Unless these are us-ed 50 per cent, of the preparation with which the trees are sprayed is wasted ; and besides it is only by con's erting the insecticide into the finest spray, in faotTalmost into a vapour, that it can be made to reach with certainty every leal", branch, and cranny in the bark .so as to be surely destructive to the insect pest to be got rid of. The ordinary force-pump and spray nozzle is very wasteful, often quite two-thirdb of the solution doing no good whatever when applied by such means'. Profest-or Riley of Washington, the well known authority upon entomological pests, and the surest method* of destroying them, was fclie imentor of the cyclone nozzle of which we give an illustrative cut, from which we think it could be made in this country. So far as we know it is not protected by patent even in America. This is generally reckoned one of, if not the most ethcacious spray-nozzle ever brought into use in the States, and we have the less hesitation in recommending it to New Zealand fruit giowers, because after many experiments made by himself, the editor of the Rural New Yorker, has comej to the conclusion that there is nothing of the kind so well suited for the application of insecticides to plants and trees in the form of spray, as the Cyclone Nozzle. We have noticed that any advice given to its readers by this journal on a practical matter of this kind is to be idled on ; buo Professor Rileys name, as the inventor, is a guarantee that it would not have been o tiered to the public if it did not possess supeiior merits for the purposes tor which it is recommended.

The principle on which il works is that of centrifugal motion. The orifice from which the liquid issues is tio larger than an ordinary pin, and is in the centre of the circular disc, as seen in A. The spraying mixture in passing from the hose of the pump, passes through the aperture F, seen in C— and also through the hole E, seen in D— into a circular chamber in the same, when screwed into C. Theie are so placed that the liquid is given a rapid circulatory motion, causing it to issue from the centre hole in a mere mist, and preventing the stoppage of this hole by the particles of any insecticide that may be used.