Dadourian — Form of Electrode for Lead Storage Cells. 315 



Art. XXX. — A New Form of Electrode for Lead Storage 

 Cells ; by H. M. Dadotjkian. 



It was desired to build up a battery of lead storage cells, to 

 be used in the Sheffield Physical Laboratory, for constant poten- 

 tial. After considering several types of cells, one described 

 by Feussner* was adopted. But the electrodes of these cells 



: 



(F) 



o o o o o o 



o o o o o o 



o o o o o o 



o o o o o o 



o o o o o o 



o o o o o o 



o 



u 



Fig. 1 



Fig. 3 



were inconvenient on account of the falling off of the paste. 

 This objection was done away with by designing a new form 

 of electrode, which has given such satisfactory results that it 

 is thought it may be of interest to others. 



A meridian section of a complete cell is shown in fig. 1. 

 Fig. 2 is a perspective view of one of the electrodes, which are 

 50 mm long and are cut out of lead tubing 12 mm in diameter. 



After being packed up with a paste made of lead oxide 

 (litharge) and sulphuric acid of sp. gr. 1*20, a couple of these 

 electrodes are placed in a glass bottle, 80 mm high and 45 mm in 

 diameter. The electrodes are held in position by means of a 

 layer of pitch at the bottom and a cork in the neck of the bottle. 

 A small hole in the middle of the glass tube, which is in the 

 center of the bottle, serves as an outlet for the gases which 

 form in the cell. 



* Feussner, Sammkmg Electrotechnische Vortrage, vol. i, p. 139. 



