No. 60784. 



Cells for ordinary use. 



849 



60763. 1:6. 



60765. 1:6. 



Grove Cell, F i g. 60,759 A, with zinc cylinder and S-shaped platinum sheet. 



List No. 60,759 60,760 60,761 

 Length and width of platinum sheet 160x60 100x50 60x40 mm 



2.0.0 1.4.0 0.16.0 

 Fig. B shows a battery consisting of 60 cells. 

 Electrolyte: as in Bunsen Cell. 



Daniell Cells, with copper cylinder and zinc cross, Figure (Gan.-Eein., Fig. 809) : 



List No. 60,762 60,763 60,764 



Height of glass 160 200 250 mm 



0.5.0 0.6.6 0.8.0 



Electrolyte: porous pot with zinc cross in dilute sulphuric acid 1.06 sp. gr. (about 50 com pure 

 sulphuric acid to 1 litre water); copper cylinder in saturated solution of sulphate of copper (about 

 1 part crystallised copper sulphate to 3 parts water). 



Cupron Cells, Figure, improved Lelande Cell, regenerable (Cupric oxide-alkali-zinc) ; ter- 

 minal voltage per cell about 0.8 volts. 



Type I II III IV 



List No. 60,765 60,766 60,767 60,768 



Length X Width x Height 190x55x170 190x75x240 200x110x280 250x140 370 mm 



Normal Current 

 Approx. capacity 

 Caustic Soda with 1%\ 

 Sodium Hyposulphite) 

 Water 

 



12 

 50 



0.2 



24 

 100 



0.4 



48 

 200 



0.8 



8 16 amps. 

 400 amp.-hrs. 



1.6 kg 



1.2 2.3 4.4 7 litres 



0.5.0 0.9.0 0.16.0 1.7.0 



60,769. Caustic Soda in sheet iron boxes (with 1% soda hyposulphite) 1 kg 



Spare Zinc Plate for Type . . 



List No. 

 



Spare Cupric Oxide Plate. 



List No. 

 



Exact instructions for use are supplied. 



Smee Cells, consisting of a platinised silver plate between two zinc plates. 



List No. 60,778 60,779 



Height 160 200 mm 



0. 18. 1. 4. 



Electrolyte: dilute sulphuric acid 1.06 sp. gr. (about 50 ccm pure sulphuric acid to 1 litre water). 



Bottle Cell (Grenet's), Figure, with 2 carbon plates and 1 zinc plate (Gan.-Man., Fig. 724; 

 Gan.-Eein., Fig. 815). 



List No. 60,780 60,781 60,782 60,783 



Capacity 1 / t V 2 1 1V 2 litres 



0.2.6 0.3:6 0.5.0 0.7.0 



Electrolyte: 02 grams powdered potassium bichromate, or better still, 81 grams sodium bichromate 

 (K 2 Cr 2 O 7 or N'a., ( V, ()-) are worked up together with 94 ccm of pure sulphuric acid to a smooth 

 paste, in a dish. Before hardening 900 ccm water should be added until everything is dissolved. 



s. d. 



0. 0. 9 



0().7S4. Large Bottle Cell, 340 mm high, with 

 Electrolyte: as in Xos. 60,780 60,783. 



carbon and 2 zinc plates; very powerful 1. 2. 



Cl. 5S22, 57SO :1 , .17.SU-. 



54 



