No. 61 007. 



Accumulators. 



857 



60 998 61 003. 



61 007. 1 : 5. 



60.996. Battery of Accumulators (Feussner's), comprising 20 Cells. The Batteries can be 

 combined in any number to form High Voltage Batteries as shown e. g. in Fig. 60,996 A 



The capacity is about 0.8 ampere-hours, the charging current being 0.1 ampere. The cells are 

 firmly set in with paraffin and soldered together. Terminals are fitted on the end poles of the battery. 



60.997. - - idem, comprising 25 cells 



Cupboards for High Voltage Batteries quoted for on application. Pig. 60,996 A, for example, 

 shows a Battery of 500 Feussner Cells. 



s. d. 

 2. 5.0 



2. 15. 



Edison Accumulators, 

 mechanically. 



Figure, in nickelled sheet steel boxes, imperishable electrically and 



When putting the cells in series the iron vessels must be insulated from each other. For this purpose the 

 cells are built into wood carriers being insulated from each other in the latter by ebonite. 



Complete Batteries quoted for on application. s. d. 



61.004. Syphon with Rubber Ball and Hydrometer for Edison Accumulators 0. 8. 6 



61.005. Glass Tube for testing the correct level of the Electrolyte of Edison Accumulators 0. 0. 6 



Accessories and Charging Devices for Accumulators. 



61,006. 10 Litres Accumulator Acid of 1.21 specific gravity, in carboy 



0. 6. 



61,007. Specific Gravity Tester, Figure, hydrometer with rubber ball, glass case and rubber 



tubing, for determining the acid density j 0. 7. 



A glass vessel provided at the top and bottom with an open glass tube has a rubber ball fitted 

 to the upper part and a piece of rubber tubing to the lower, while a hydrometer is contained inside. 

 If the lower end of the tubing is introduced into the acid to be tested and the rubber ball squeezed 

 the acid is drawn into the glass vessel owing to the diminution of pressure, and raises the hydro- 

 meter in the vessel, the specific gravity of the acid being read from the hydrometer. 



Cl. 32 F, 68. 



