Mr. G. Fuller on a Water-spray Influence-machine. 43 



A sectional plan on m n shows the connexion between the 

 four divisions, which are numbered I., II., III., IV. The 

 wire ring of section I. is in elec- 

 trical connexion with the receiver 

 of section IV. Similarly the rin g 

 of II. is connected with I., the 

 ring of III. with IV., and that of 

 IV. with I. 



K is a central column for sup- 

 porting four arms of the machine 

 to which are fixed the insula- 

 tors D. 



The discharge of electricity is taken between conductors in 

 connexion with II. and III. 



The nozzle is a flanged brass box, the bottom of which is 

 perforated with small holes through which the water descends. 

 It is fixed by a number of small bolts and nuts through its 

 flange to a brass plate fixed to the 

 supply-pipe, a a, and the joint is made 

 watertight by a vulcanized india- 

 rubber ring. A piece of fine linen 

 covers the top of the box to strain the 

 water before it reaches the small holes, 

 as it was found that the water was 

 either stopped or diverted by small 

 particles unless this precaution was 

 taken. The holes, which are circular, 

 have a diameter of yoV^ as it was 

 found that when holes joVo" were 

 used the water was so much dispersed 



by the working of the machine that a great part of the water 

 ceased to fall into the receivers. This great dispersion also 

 injured the insulation, and besides this it was extremely diffi- 

 cult to keep these holes free. 



With regard to the number of holes. In the nozzles of 

 sections I. and IV. there are six arranged in a circle of 1%" 

 diameter. For those of sections II. and III., either a pair 

 with twelve holes each in a circle of 1J' 

 eighteen holes in a circle of 1 j /y diameter. 



The rings are made of brass or copper wire of about y 

 diameter. The inside diameter of the rings used with the 

 nozzles with six and twelve holes is 2£ //r , and with the eighteen 

 holes 2}". 



The wire of each ring is continued and fixed to a clip of 

 split brass tube, C, which slides upon the brass tube E or F. 



H I P" II 



ALJMV 



PT|pgr 



iiiiii 



' r diameter, or with 



