266 



the eddy- chamber class, the details of which are fully giveu iu other 

 drawings. 



The Marseilles Modification. — This novel modification of the Riley noz- 

 zle was recently brought out by a society known as the Future of Viti- 

 culture (FAvenir Viticole) of jMarseilles, France, and deserves attention 

 as the most radical modification which has yet come into our possession 

 as well as for its utility. In this the typical chamber has been so altered 

 as to bear little resemblance to the original type. This is fully shown in 

 the illustration (Fig. 62). The stem,/, is a brass tube which makes a screw 



connection with the discharge pipe at its proximal 

 end, and has its distal end closed by a cai) soldered 

 on and bearing in its center the disgorging needle, 

 d. Just below the closed eud an orifice, c, communi- 

 cates with the interior. This is cut tangentially in 

 the side wall of the tube and is of considerable size. 

 It is covered externally by a thin brass band fitted 

 closely over the tube, but which does not quite com- 

 plete the circumference. This is indicated in the 

 drawing. This band can be adjusted about the tube 

 so as to leave a greater or less opening ate as may 

 be desired. When turned partially over the orifice, 

 (?, it reduces the opening to required dimensions and 

 forces the issuing liquid to take a rotary motion 

 about the stem,/, and to rise with such motion into 

 the chamber shown immediately above. Below the 

 band just mentioned is a thicker band, ^, soldered 

 around the tube. The lower edge of this forms a 

 shoulder which meets the inward turned shoulder, 

 /<, of the outer jacket, and a rubber washer between 

 completes the joint. The outer jacket extends be- 

 yond the end of the inner tube and forms a chamber covered by the 

 removable screw-cap, «, which is pierced in tie center with the discharge 

 orifice e. The illustration shows one half of the outer jacket cut away. 

 It slides readily upon the stem,/, so that to remove an obstruction the 

 outer jacket only has to be drawn bodily downward when the needle, d^ 

 enters and clears the orifice. I have as yet had no opportunity to use 

 this nozzle, but believe that a cord or wire can readily be used to draw 

 the outer jacket down when it is out of reach of the hand. The pressure 

 of the liquid immediately restores it to the normal position. 



The New Zealand Triijlet Modification. — The triplet cyclone manufact- 

 ured by Kutzner Bros, of Masterton, Xew Zealand, is one of the prac- 

 tical foreign modifications of the Riley nozzle worthy of mention and 

 illustration. The history of the introduction of the eddy chamber sys- 

 tem of nozzles into Australia and neighboring islands is told by Mr. 

 Frazer S. Crawford of Adelaide, South Australia, in his paper treating 

 of the Fusicladiums. 



Fig, 62. — Coustmction of 

 tlie Marseilles Nozzle — 

 natural size (Origiual). 



